SBD FIRE WEATHER 9/19/17

DAILY FIRE WEATHER & FIRE INFO            

To:     ALL UNITS From: EMAIL: pdupree@bdcecs.org
Ph: OFFICE:(760) 559-3032  RADIO:(HAM) KG6ZHW

COUNTY F.D RADIO: #733784 COM-330  

Date: 9/19/17
SKYWARN: NORMAL

NETS ON WED  NIGHT @1900 HEAPS PK./WX BRIEFS TABLE  MT. ON SUN @ 1800 HRS

DAYS NO R.F. @ STA.: 08

 

National Preparedness Level 4 

Southern California Area

Preparedness Level: (PL 3) 

Northern California Area

Preparedness Level (PL 3) SYNOP: A trough will remain over the area through the workweek, which will result in below normal temperatures and breezy conditions at times. Onshore pressure gradients will allow northwest winds of 15-25 mph to develop this afternoon along the central coast. Also expect west winds of 20-30 mph across the Kern County Mountains, Antelope Valley and Banning Pass. Temperatures will range from the upper 60s at the coast to 80s in the valleys to near 100 in the low desert. Minimum RH will be lowest along the north side of the Angeles and San Bernardino N.F’s where readings may reach the mid teens during the afternoon. Expect similar weather conditions Wednesday. A deeper trough will bring even cooler weather to the region and widespread drizzle may be possible Thursday morning. Some light showers may also develop in the Sierras Thursday afternoon, but precipitation amounts will be very light. Highs Thursday may only be in the 50s in the mountains to the 70s in the valleys with only limited clearing in the afternoon. West winds of 25-40 mph will be possible in the same desert interface regions, as well as the eastern Cleveland National Forest Thursday afternoon. This weekend, warmer and less windy weather is expected. Very light northeast winds under 15 mph will be possible Sunday morning over Southern California. No thunderstorms are expected throughout the period FLASH FLOOD POTENTIAL INDEX FOR EXTREME SOUTHWESTERN CALIFORNIA

No thunderstorms are expected through Wednesday.

                                                       TUE        WED

Inland Empire NONE NONE
San Bernardino County Mountains NONE NONE
High Desert Including Apple and Lucerne Valleys NONE NONE
San Gorgonio Pass Near Banning NONE NONE

Flash Flood Codes: GREEN: NONE   YELLOW: LOW   ORANGE: MODERATE  RED: HIGH NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)

Expect afternoon breezes through mid week with a  cooling trend and stronger southwest winds by Thursday across the  Mojave Desert region and southern Great Basin. A cold front will  sweep across the area late Thursday bringing light snow chances  above 7000 feet in the southern Great Basin. Critical fire weather  conditions are not expected due to relatively high fuel  moisture for most zones and marginal forecast humidities.

 

SPECIAL NOTES: N/A

 

DAILY FUELS/FIRE POTENTIAL:

Large fire potential will be low over most of the district through the week. However, it will be breezy each afternoon toward the desert which would allow wind-driven fire behavior in any new start. Fine fuel moisture conditions continue to be slightly above normal for this time of year, but fuels will be susceptible to ignition each afternoon. Good RH recovery can be expected each night, resulting in a relatively short active burning period. This weekend, expect lower RH and more sunshine. This will allow for higher ERC’s in the afternoon, but rates of spread will be slow due to a lack of wind. Light IA is expected through the period.

 

SANTA ANA WILDFIRE THREAT INDEX: TODAY: GREY-NO RATING

 

————————————————————————————–APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):

.TUESDAY…

Sky/weather………Mostly sunny.

Max temperature…..82 to 90.

24 HR TREND……Down 5 degrees.

Min humidity……..15 to 20 percent.

24 HR TREND……Up 5 percent.

WIND (20 FT)……..Winds west 7 to 15 mph with gusts to 30 mph.

LAL……………..1.

.TUESDAY NIGHT…

Sky/weather………Mostly clear.

Min temperature…..52 to 61.

24 HR TREND……Down 1 degree.

Max humidity……..50 to 60 percent.

24 HR TREND……Down 5 percent.

WIND (20 FT)……..Winds southwest 6 to 15 mph with gusts to 30

mph.

LAL……………..1.

.WEDNESDAY…

Sky/weather………Sunny.

Max temperature…..82 to 90.

24 HR TREND……Up 1 degree.

Min humidity……..15 to 20 percent.

24 HR TREND……Little change.

WIND (20 FT)……..Winds west 6 to 15 mph with gusts to 30 mph.

LAL……………..1.

 WRIGHTWOOD:

Tuesday

Sunny, with a high near 71. West wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 54. Northwest wind 5 to 10 mph becoming southwest in the evening.

Wednesday

Sunny, with a high near 71. West wind around 5 mph becoming north in the afternoon.

Wednesday Night

Mostly clear, with a low around 50. Southwest wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.

 PHELAN:

Tuesday

Sunny, with a high near 78. South wind around 5 mph becoming west in the afternoon.

Tuesday Night

Mostly clear, with a low around 53. South wind 5 to 10 mph.

Wednesday

Sunny, with a high near 78. South wind 5 to 10 mph.

Wednesday Night

Mostly clear, with a low around 52. South wind 5 to 10 mph.

 TRONA:

Tuesday

Sunny, with a high near 93. South wind 3 to 8 mph.

Tuesday Night

Clear, with a low around 62. South southwest wind 5 to 7 mph becoming calm after midnight.

Wednesday

Sunny, with a high near 92. Light south wind becoming southwest 13 to 18 mph in the morning. Winds could gust as high as 25 mph.

Wednesday Night

Mostly clear, with a low around 62. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 31 mph.

 

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):

.TUESDAY…  * Sky/Weather………Sunny.  * Max temperature:  *     Valley floor….93-98.  *     24 hr trend…..Little change.  * Min humidity:  *     Valley floor….9-17 percent.  *     24 hr trend…..Little change.  * Wind (Slope/valley=20 ft, 10 min avg):  *     Valley floor….Southwest wind 10 to 15 mph with gusts to around        30 mph.  *     10000 ft msl….West 25 to 35 mph becoming 25 to 30 mph in the      afternoon.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..5.  .TUESDAY NIGHT…  * Sky/Weather………Mostly clear.  * Min temperature:  *     Valley floor….55-60.  *     24 hr trend…..On average down 3 degrees.  * Max humidity:  *     Valley floor….40-45 percent.  *     24 hr trend…..Little change.  * Wind (Slope/valley=20 ft, 10 min avg):  *     Valley floor….Southwest wind 10 to 15 mph.  *     10000 ft msl….West 20 to 30 mph decreasing to 15 to 25 mph        after midnight.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..5.  .WEDNESDAY…  * Sky/Weather………Sunny.  * Max temperature:  *     Valley floor….93-98.  *     24 hr trend…..Little change.  * Min humidity:  *     Valley floor….10-16 percent.  *     24 hr trend…..Little change.  * Wind (Slope/valley=20 ft, 10 min avg):  *     Valley floor….Southwest wind up to 10 mph increasing to 10 to        15 mph with gusts to around 35 mph in the afternoon.  *     10000 ft msl….West 15 to 25 mph increasing to 20 to 30 mph in        the afternoon.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..5.

 

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS:

.TUESDAY…  * Sky/Weather………Sunny.  * Max temperature:  *     Valley floor….84-89.  *     7000 feet…….71-76.  *     24 hr trend…..On average down 2 degrees.  * Min humidity:  *     Valley floor….11-17 percent.  *     7000 feet…….16-26 percent.  *     24 hr trend…..On average up 3 percent.  * Wind (slope/valley=20 ft, 10 min avg):  *     Slope/valley….Upslope/upvalley 4 to 8 mph becoming south up to        10 mph in the afternoon.  *     Upper slopes….West winds 10 to 15 mph with gusts to around 30        mph decreasing to around 10 mph in the afternoon.  *     10000 ft msl….West 15 to 25 mph decreasing to 10 to 15 mph in        the afternoon.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..5.  .TUESDAY NIGHT…  * Sky/Weather………Mostly clear.  * Min temperature:  *     Valley floor….53-58.  *     7000 feet…….32-37.  *     24 hr trend…..On average down 3 degrees.  * Max humidity:  *     Valley floor….42-47 percent.  *     7000 feet…….63-68 percent.  *     24 hr trend…..On average up 13 percent.  * Wind (slope/valley=20 ft, 10 min avg):  *     Slope/valley….Downslope/downvalley 2 to 5 mph.  *     Upper slopes….Downslope/downvalley 2 to 5 mph becoming west up        to 10 mph after midnight.  *     10000 ft msl….West up to 10 mph.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..5.  .WEDNESDAY…  * Sky/Weather………Sunny.  * Max temperature:  *     Valley floor….83-88.  *     7000 feet…….72-77.  *     24 hr trend…..Little change.  * Min humidity:  *     Valley floor….12-15 percent.  *     7000 feet…….18-28 percent.  *     24 hr trend…..On average up 2 percent.  * Wind (slope/valley=20 ft, 10 min avg):  *     Slope/valley….West winds up to 10 mph shifting to the south        around 10 mph with gusts to around 25 mph in the afternoon.  *     Upper slopes….West winds 10 to 15 mph. Gusts up to 35 mph in        the afternoon.  *     10000 ft msl….West 10 to 15 mph.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..5.

 

INLAND EMPIRE (CAZ248):

.TUESDAY…

Sky/weather………Mostly cloudy…becoming mostly sunny. Patchy

fog in the morning.

Max temperature…..76 to 82.

24 HR TREND……Down 1 degree.

Min humidity……..35 to 45 percent.

24 HR TREND……Little change.

WIND (20 FT)……..Variable 2 to 5 mph becoming west 6 to 9 mph

with gusts to 20 mph in the afternoon.

LAL……………..1.

.TUESDAY NIGHT…

Sky/weather………Mostly clear…becoming mostly cloudy. Patchy

fog after midnight.

Min temperature…..53 to 61.

24 HR TREND……Little change.

Max humidity……..85 to 95 percent.

24 HR TREND……Little change.

WIND (20 FT)……..Winds southwest 6 to 9 mph with gusts to 20 mph

in the evening becoming variable 2 to 5 mph.

LAL……………..1.

.WEDNESDAY…

Sky/weather………Cloudy…becoming mostly sunny. Patchy fog in

the morning.

Max temperature…..76 to 82.

24 HR TREND……Little change.

Min humidity……..35 to 45 percent.

24 HR TREND……Little change.

WIND (20 FT)……..Variable 2 to 5 mph becoming southwest 6 to 10

mph with gusts to 20 mph in the afternoon.

LAL……………..1.

 

DEVORE:

Tuesday

Patchy fog before 11am. Otherwise, sunny, with a high near 77. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

Tuesday Night

Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 56. Southwest wind 5 to 10 mph becoming light south in the evening.

Wednesday

Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 78. Light south wind becoming southwest 5 to 10 mph in the afternoon.

Wednesday Night

Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 56. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

 

CHINO HILLS:

Tuesday

Mostly cloudy, then gradually becoming sunny, with a high near 79. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

Tuesday Night

Increasing clouds, with a low around 60. Southwest wind 5 to 10 mph becoming light south after midnight. Winds could gust as high as 20 mph.

Wednesday

Cloudy through mid morning, then gradual clearing, with a high near 79. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

Wednesday Night

Increasing clouds, with a low around 61. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

 

COLTON:

Tuesday

Mostly cloudy, then gradually becoming sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.

Tuesday Night

Increasing clouds, with a low around 61. West wind 5 to 10 mph becoming light southwest in the evening.

Wednesday

Cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.

Wednesday Night

Mostly cloudy, with a low around 62. West wind 5 to 10 mph becoming south after midnight

 

SAN BERNARDINO N.F. (CAZ255/CAZ256):

.TUESDAY…

Sky/weather………Mostly sunny.

Max temperature…..62 to 71 above 6000 feet to 70 to 80 below 6000

feet.

24 HR TREND……Down 3 degrees.

Min humidity……..20 to 25 percent on desert slopes to 30 to 40

percent on coastal slopes.

24 HR TREND……Little change.

WIND (20 FT)……..

SLOPES………..Winds west 6 to 13 mph with gusts to 30 mph.

RIDGETOP………Winds west 6 to 12 mph with gusts to 25 mph.

LAL……………..1.

.TUESDAY NIGHT…

Sky/weather………Mostly clear.

Min temperature…..41 to 51 above 6000 feet to 47 to 56 below 6000

feet.

24 HR TREND……Little change.

Max humidity……..35 to 45 percent on desert slopes to 65 to 75

percent on coastal slopes.

24 HR TREND……Up 10 percent.

WIND (20 FT)……..

SLOPES………..Winds west 6 to 13 mph. Gusts to 30 mph.

RIDGETOP………Winds west 6 to 11 mph with gusts to 20 mph.

LAL……………..1.

.WEDNESDAY…

Sky/weather………Mostly sunny.

Max temperature…..65 to 75 above 6000 feet to 69 to 79 below 6000

feet.

24 HR TREND……Up 4 degrees.

Min humidity……..20 to 25 percent on desert slopes to 25 to 35

percent on coastal slopes.

24 HR TREND……Little change.

WIND (20 FT)……..

SLOPES………..Winds west 6 to 13 mph. Gusts to 30 mph.

RIDGETOP………Winds west 6 to 8 mph. Gusts to 20 mph in the

afternoon.

LAL……………..1.

 

BANNING PASS:

.TUESDAY…

Sky/weather………Mostly sunny.

Max temperature…..92 to 97.

24 HR TREND……Down 2 degrees.

Min humidity……..15 to 20 percent.

24 HR TREND……Little change.

WIND (20 FT)……..Winds west 9 to 19 mph with gusts to 35 mph.

LAL……………..1.

.TUESDAY NIGHT…

Sky/weather………Clear.

Min temperature…..65 to 72.

24 HR TREND……Little change.

Max humidity……..40 to 50 percent.

24 HR TREND……Up 10 percent.

WIND (20 FT)……..Winds west 9 to 19 mph with gusts to 35 mph.

LAL……………..1.

.WEDNESDAY…

Sky/weather………Sunny.

Max temperature…..92 to 97.

24 HR TREND……Little change.

Min humidity……..15 to 20 percent.

24 HR TREND……Little change.

WIND (20 FT)……..Winds west 7 to 17 mph with gusts to 35 mph.

LAL……………..1.

 

JOSHUA TREE AREA (CAZ261):

TUESDAY…  * Sky/weather…………………Sunny.  * Max Temperature……………..81-94.  *    24 hr trend………………Little change.  * Min Humidity………………..15-26 pct.  *    24 hr trend………………Little RH change.  * Winds – 20 foot…Slope/Valley..West 5 to 15 mph.  * Winds…10000 FT MSL…………West 15 to 25 mph.  * Chance of Precip…………….0 percent.  * CWR (>= 0.10 IN)…………….0 percent.  * LAL………………………..1.  * Haines High Level Index………4 or low potential for large    plume dominated fire growth.  .TUESDAY NIGHT…  * Sky/weather…………………Clear.  * Min Temperature……………..57-66.  *    24 hr trend………………Little change.  * Max Humidity………………..40-53 pct.  *    24 hr trend………………Little RH change.  * Winds – 20 foot…Slope/Valley..West 5 to 15 mph.  * Winds…10000 FT MSL…………Southwest 15 to 25 mph.  * Chance of Precip…………….0 percent.  * CWR (>= 0.10 IN)…………….0 percent.  * LAL………………………..1.  .WEDNESDAY…  * Sky/weather…………………Sunny.  * Max Temperature……………..80-94.  *    24 hr trend………………Little change.  * Min Humidity………………..15-25 pct.  *    24 hr trend………………Little RH change.  * Winds – 20 foot…Slope/Valley..Southwest 5 to 15 mph.  * Winds…10000 FT MSL…………Southwest 15 to 25 mph.  * Chance of Precip…………….0 percent.  * CWR (>= 0.10 IN)…………….0 percent.  * LAL………………………..1.  * Haines High Level Index………4 or low potential for large    plume dominated fire growth.

 

NEEDLES, RIVER BAT. (CAZ229):

TUESDAY…  * Sky/Weather………Sunny.  * Max temperature:  *     Valley floor….94-99.  *     24 hr trend…..Little change.  * Min humidity:  *     Valley floor….8-14 percent.  *     24 hr trend…..Little change.  * Wind (Slope/valley=20 ft, 10 min avg):  *     Valley floor….South wind 10 to 15 mph.  *     10000 ft msl….Southwest 30 to 40 mph decreasing to 25 to 35 mph        in the afternoon.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..4.  * Mixing height…….8400 ft agl.  * Transport winds…..South 10 to 20 knots.  * Ventilation………Excellent.  .TUESDAY NIGHT…  * Sky/Weather………Mostly clear.  * Min temperature:  *     Valley floor….66-71.  *     24 hr trend…..On average down 2 degrees.  * Max humidity:  *     Valley floor….33-38 percent.  *     24 hr trend…..Little change.  * Wind (Slope/valley=20 ft, 10 min avg):  *     Valley floor….South wind up to 10 mph.  *     10000 ft msl….West 20 to 30 mph becoming southwest 15 to 20 mph        after midnight.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..4.  .WEDNESDAY…  * Sky/Weather………Sunny.  * Max temperature:  *     Valley floor….94-99.  *     24 hr trend…..Little change.  * Min humidity:  *     Valley floor….10-15 percent.  *     24 hr trend…..Little change.  * Wind (Slope/valley=20 ft, 10 min avg):  *     Valley floor….Southeast wind up to 10 mph shifting to the south        in the afternoon. Gusts up to 35 mph.  *     10000 ft msl….Southwest 20 to 25 mph increasing to 25 to 35 mph        in the afternoon.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..4.  * Mixing height…….7800 ft agl.  * Transport winds…..South 10 to 20 knots.  * Ventilation………Excellent.

 

LAS VEGAS CLARK COUNTY BORDER:

TUESDAY…  * Sky/Weather………Sunny.  * Max temperature:  *     4000 feet…….88-93.  *     24 hr trend…..Little change.  * Min humidity:  *     4000 feet…….12-17 percent.  *     24 hr trend…..Little change.  * Wind (slope/valley=20 ft, 10 min avg):  *     Slope/valley….Southwest winds up to 10 mph with gusts to around        25 mph.  *     10000 ft msl….West 25 to 35 mph decreasing to 15 to 25 mph in        the afternoon.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..4.  * Mixing height…….7500 ft agl.  * Transport winds…..Southwest around 10 knots.  * Ventilation………Very good.  .TUESDAY NIGHT…  * Sky/Weather………Mostly clear.  * Min temperature:  *     4000 feet…….58-63.  *     24 hr trend…..On average down 2 degrees.  * Max humidity:  *     4000 feet…….36-41 percent.  *     24 hr trend…..On average up 2 percent.  * Wind (slope/valley=20 ft, 10 min avg):  *     Slope/valley….Southwest winds up to 10 mph.  *     10000 ft msl….Southwest 10 to 15 mph.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..4.  .WEDNESDAY…  * Sky/Weather………Sunny.  * Max temperature:  *     4000 feet…….88-93.  *     24 hr trend…..Little change.  * Min humidity:  *     4000 feet…….11-15 percent.  *     24 hr trend…..Little change.  * Wind (slope/valley=20 ft, 10 min avg):  *     Slope/valley….Upslope/upvalley 4 to 8 mph becoming south 10 to        15 mph in the afternoon.  *     10000 ft msl….Southwest 15 to 25 mph increasing to 20 to 30 mph        in the afternoon.  * CWR (>= 0.10 in)….0 percent.  * LAL……………..1.  * Haines Index……..4.  * Mixing height…….6500 ft agl.  * Transport winds…..South around 10 knots increasing to southwest    15 to 25 knots in the afternoon.  * Ventilation………Excellent.

 

*************************** OUT OF COUNTY *************************************

LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ247/CAZ249):                                                   ANDLOS ANGELES COUNTY SAN FERNANDO VALLEY:.TUESDAY…  Sky/weather………Mostly sunny except areas of morning low clouds                      and fog.  Max temperature…..73-83.     24 hr trend……Down 3.  Min humidity……..40-55 percent.     24 hr trend……Little change.  20-foot winds…….Variable 3-6 mph becoming southeast to southwest                      8-15 mph with local gusts to 25 mph in the afternoon.  Marine layer……..2000 ft asl.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .TUESDAY NIGHT…  Sky/weather………Mostly clear except areas of low clouds and fog                      after midnight.  Min temperature…..56-64.  Max humidity……..75-95 percent except 60-75 percent in the hills.  20-foot winds…….Southeast to southwest 8-15 mph with local gusts                      to 25 mph in the evening becoming variable 3-6 mph.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .WEDNESDAY…  Sky/weather………Mostly sunny except areas of morning low clouds                     and fog.  Max temperature…..74-84.  Min humidity……..30-50 percent.  20-foot winds…….Variable 3-6 mph becoming southeast to southwest                      8-15 mph with local gusts to 25 mph in the afternoon.  LAL……………..1.  CWR (>0.10 IN)……0 percent.

SANTA MONICA MOUNTAINS RECREATIONAL AREA:.TUESDAY…  Sky/weather………Morning low clouds and fog then mostly sunny.  Max temperature…..74-82 except 68-74 coastal slopes and higher peaks.     24 hr trend……Down 3.  Min humidity……..45-65 percent.     24 hr trend……Little change.  20-foot winds…….      Valleys/lwr slopes…Variable/upslope 4-8 mph becoming upvalley                           8-15 mph with local gusts to 25 mph in the                         afternoon.      Ridges/upr slopes….Variable 3-6 mph becoming southwest to west                           8-15 mph in the afternoon.  Marine layer……..2000 ft asl.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .TUESDAY NIGHT…  Sky/weather………Mostly clear then low clouds and fog after                      midnight.  Min temperature…..52-60.  Max humidity……..75-95 percent.  20-foot winds…….      Valleys/lwr slopes…Upvalley 6-12 mph with gusts to 20 mph in                           the evening becoming downslope/downvalley                           3-6 mph.      Ridges/upr slopes….Southwest to west 8-15 mph in the evening                           becoming variable 3-6 mph.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .WEDNESDAY…  Sky/weather………Morning low clouds and fog then mostly sunny.  Max temperature…..72-80 except 66-72 coastal slopes and higher peaks.  Min humidity……..40-60 percent.  20-foot winds…….      Valleys/lwr slopes…Variable/upslope 4-8 mph becoming upvalley                           8-15 mph with local gusts to 25 mph in the                           afternoon.      Ridges/upr slopes….Variable 3-6 mph becoming southwest to west                         8-15 mph in the afternoon.  LAL……………..1.  CWR (>0.10 IN)……0 percent. SANTA CLARITA VALLEY:.TUESDAY…  Sky/weather………Mostly sunny.  Max temperature…..76-83.     24 hr trend……Down 3-5.  Min humidity……..35-50 percent.     24 hr trend……Little change.  20-foot winds…….Variable 3-6 mph becoming south to southwest 8-15 mph                      with gusts to 25 mph in the afternoon.  Marine layer……..2000 ft asl.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .TUESDAY NIGHT…  Sky/weather………Mostly clear.  Min temperature…..51-56.  Max humidity……..55-75 percent.  20-foot winds…….South to southwest 8-15 mph with gusts to 25 mph                      in the evening becoming variable 3-6 mph.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .WEDNESDAY…  Sky/weather………Mostly sunny.  Max temperature…..75-83.  Min humidity……..25-40 percent.  20-foot winds…….Variable 3-6 mph becoming south to southwest 8-15 mph                      with gusts to 25 mph in the afternoon.  LAL……………..1.  CWR (>0.10 IN)……0 percent. ANGELES NATIONAL FOREST (CAZ253):.TUESDAY…  Sky/weather………Mostly sunny except for areas of morning low clouds                     and fog on north-facing slopes.  Max temperature…..74-82 low elevations to 65-74 higher elevations                      and coastal slopes.     24 hr trend……Down 3-5.  Min humidity……..35-50 percent except 10-20 percent higher peaks                      and warmer valleys.     24 hr trend……Little change.  20-foot winds…….      Valleys/lwr slopes…Variable/upslope 4-8 mph becoming upvalley 8-15 mph                           with local gusts to 25 mph in the afternoon.      Ridges/upr slopes….Northwest to north 10-20 mph with gusts to 25 mph.                           Isolated gusts to 40 mph near Whitaker                           Peak.  Marine layer……..2000 ft asl.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .TUESDAY NIGHT…  Sky/weather………Mostly clear.  Min temperature…..47-56 low elevations to 37-45 colder valleys and peaks.  Max humidity……..30-50 percent except 60-75 percent colder valleys.  20-foot winds…….      Valleys/lwr slopes…Upvalley 8-15 mph with local gusts to 25 mph in the                           evening becoming northwest to north 5-15 mph.                           Strongest through the Interstate 5 Corridor.      Ridges/upr slopes….Northwest to north 10-20 mph with gusts to 25 mph.                           Isolated gusts to 40 mph near Whitaker                           Peak.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .WEDNESDAY…  Sky/weather………Mostly sunny.  Max temperature…..71-81 low elevations to 61-71 higher elevations.  Min humidity……..30-45 percent except 15-25 percent higher peaks                      and warmer valleys.  20-foot winds…….      Valleys/lwr slopes…Northwest to north 5-15 mph becoming upvalley                           6-12 mph with gusts to 20 mph in the afternoon.                           Strongest through the Interstate 5 Corridor.      Ridges/upr slopes….Northwest to north 10-20 mph with gusts to 25 mph.  LAL……………..1.  CWR (>0.10 IN)……0 percent. ANTELOPE VALLEY (CAZ259):.TUESDAY…  Sky/weather………Mostly sunny.  Max temperature…..76-86.     24 hr trend……Down 3-5.  Min humidity……..15-25 percent.     24 hr trend……Little change.  20-foot winds…….Southwest to west 5-15 mph increasing to 15-25 mph                      with gusts to 35 mph. Isolated gusts to 45 mph                      near Lake Palmdale.  Marine layer……..None.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .TUESDAY NIGHT…  Sky/weather………Mostly clear.  Min temperature…..51-57.  Max humidity……..35-55 percent.  20-foot winds…….West 15-25 mph with gusts to 35 mph in the evening                      decreasing to 5-15 mph overnight. Isolated gusts to                      45 mph near Lake Palmdale.  LAL……………..1.  CWR (>0.10 IN)……0 percent.  .WEDNESDAY…  Sky/weather………Mostly sunny.  Max temperature…..74-84.  Min humidity……..15-25 percent.  20-foot winds…….Southwest to west 5-15 mph increasing to 15-25 mph                      with gusts to 35 mph. Isolated gusts to 45 mph                      near Lake Palmdale.  LAL……………..1.  CWR (>0.10 IN)……0 percent. KERN CO. DESERTS (CAZ298):TUESDAY…  Sky/weather………Sunny.  MAX TEMPERATURE…..78-83.     24 HR TREND……Down 2-8 degrees.  MIN HUMIDITY……..23-33 percent.     24 HR TREND……Up 3-9 percent.  20-FOOT WINDS…….West 15-18 mph.  LAL……………..1.  VENTILATION………Very good.  Mixing height…….6500 ft AGL.  TRANSPORT WINDS…..West 20 mph.  CHC WETTING RAIN….0 percent.  .TUESDAY NIGHT…  Sky/weather………Mostly clear.  MIN TEMPERATURE…..53-58.     24 HR TREND……Down 2-4 degrees.  MAX HUMIDITY……..53-63 percent.     24 HR TREND……Down 1-3 percent.  20-FOOT WINDS…….West 15-18 mph in the evening decreasing                      to 8-11 mph.  LAL……………..1.  CHC WETTING RAIN….0 percent.  .WEDNESDAY…  Sky/weather………Sunny.  MAX TEMPERATURE…..77-82.     24 HR TREND……Little change.  MIN HUMIDITY……..18-28 percent.     24 HR TREND……Down 2-4 percent.  20-FOOT WINDS…….West 8-11 mph in the morning increasing to                      15-18 mph.  LAL……………..1.  VENTILATION………Excellent.  Mixing height…….6500 ft AGL.  TRANSPORT WINDS…..West 15 mph in the morning increasing to                      20 mph in the afternoon.  CHC WETTING RAIN….0 percent. TEHACHAPI:.TUESDAY…  Sky/weather………Sunny.  Max temperature…..     5000 FEET……..65-70.     24 HR TREND……Down 3-9 degrees.  MIN HUMIDITY……..     5000 FEET……..29-39 percent.     24 HR TREND……Up 7-13 percent.  WIND – 20 FOOT (10 MINUTE AVERAGE)     SLOPES………..West 12-15 mph.     RIDGES………..West 15-18 mph.  LAL……………..1.  VENTILATION………Good.  Mixing height…….5100 ft AGL.  TRANSPORT WINDS…..Northwest 20 mph.  CHC WETTING RAIN….0 percent.  .TUESDAY NIGHT…  Sky/weather………Mostly clear.  Min temperature….     5000 FEET……..46-51.     24 HR TREND……Down 1-3 degrees.  MAX HUMIDITY……..     5000 FEET……..61-71 percent.     24 HR TREND……Down 1-3 percent.  WIND – 20 FOOT (10 MINUTE AVERAGE)     SLOPES………..West 12-15 mph in the evening becoming                      westerly 8-11 mph.     RIDGES………..West 15-18 mph in the evening becoming                      northwest 10-13 mph.  LAL……………..1.  CHC WETTING RAIN….0 percent.  .WEDNESDAY…  Sky/weather………Sunny.  Max temperature…..     5000 FEET……..66-71.     24 HR TREND……Little change.  MIN HUMIDITY……..     5000 FEET……..25-35 percent.     24 HR TREND……Down 2-8 percent.  WIND – 20 FOOT (10 MINUTE AVERAGE)     SLOPES………..Westerly 8-11 mph in the morning increasing                      to 10-13 mph by afternoon.     RIDGES………..Northwest 10-13 mph in the morning becoming                      west 12-15 mph by afternoon.  LAL……………..1.  VENTILATION………Very good.  Mixing height…….5900 ft AGL.  TRANSPORT WINDS…..West 12 mph in the morning increasing to                      northwest 20 mph in the afternoon.  CHC WETTING RAIN….0 percent. ORANGE CO. (ANAHEIM):TUESDAY…Mostly cloudy in the morning…becoming partly cloudy.  Highs 76 to 81. Light winds.  .TUESDAY NIGHT…Partly cloudy in the evening…becoming cloudy.  Lows 57 to 65. Light winds.  .WEDNESDAY…Cloudy in the morning…becoming partly cloudy.  Highs 76 to 81. Light winds.  .WEDNESDAY NIGHT…Partly cloudy in the evening…becoming mostly  cloudy. Lows 57 to 65. Light winds. SAN DIEGO COAST (SAN DIEGO):TUESDAY…Cloudy in the morning…becoming partly cloudy. Highs  72 to 77. Light winds.  .TUESDAY NIGHT…Partly cloudy in the evening…becoming cloudy.  Lows 60 to 65. Light winds.  .WEDNESDAY…Cloudy in the morning…becoming partly cloudy.  Highs 72 to 77. Light winds.  .WEDNESDAY NIGHT…Partly cloudy in the evening…becoming mostly  cloudy. Lows 61 to 66. Light winds. ====================================================================THIS DAY IN WEATHER HISTORY:

1989: An exceptionally cold storm system for September swept down the California coast and brought early season snows to the San Gabriel and San Bernardino Mountains, including 4-5 inches in Running Springs and Lake Arrowhead. Big Bear Lake reported 1.5 inches of snow, the earliest measurable snowfall of the season on record. The snow led to several traffic accidents along Highway 18 and 330.

 

1984: A tropical air mass lasting two weeks and high sea surface temperatures led to record minimum temperature records set each day except one at San Diego starting on 9/4 and ending on this day. Low temperatures ranged from 73° to the highest minimum of all time of 78° on 9/9 and 9/17. The high was 100° on 9/8.

 

1963: Northeastward moving Tropical Storm Katherine made landfall in northern Baja California with rainfall of up to 6.50 inches in the mountains from 9/17 to this day. 3.86 inches fell in San Bernardino, 3.44 inches in Riverside, 2.66 inches in Victorville and Cuyamaca, 1.90 inches in San Diego, 1.88 inches in Indio, and 1.62 inches in Santa Ana. Disastrous flooding and erosion hit a northern San Bernardino neighborhood.

 

1952: A west-northwestward moving tropical storm southwest of Baja California dissipated. Moisture from this storm resulted in rainfall of up to two inches in the mountains and deserts starting on this day and ending on 9/21, with most falling on this day. This occurred during the El Niño of 1951-52.

 

1939: A heat wave that started on 9/18 and ended on 9/22 preceded the arrival of a tropical storm called “El Cordonazo.” High temperature records of more than 95° occurred at San Diego each day, with the highest temperature reaching 106° on 9/21. A tropical cyclone moving northwestward, just off the west coast of Mexico, moved into southern Baja California and dissipated. The moisture from this tropical cyclone generated rainfall of up to three inches in the deserts and mountains starting on this day and ending on 9/21.

=========================================================================TROPICAL EAST PACIFIC REPORT:

Tropical Weather Outlook

 

For the eastern North Pacific…east of 140 degrees west longitude:

 

The National Hurricane Center is issuing advisories on Tropical

Storm Norma, located west-southwest of the southern tip of the Baja

California peninsula, and on Tropical Storm Otis, located more than

1000 miles west-southwest of the southern tip of the Baja California

peninsula.

 

An area of low pressure is expected to form by the end of the week

south of southeastern Mexico. Gradual development of this system

is possible this weekend while the system moves slowly

west-northwestward just south of the coast of Mexico.

* Formation chance through 48 hours…low…near 0 percent.

* Formation chance through 5 days…medium…40 percent.

 

Tropical Storm Norma

 

 

…NORMA GRADUALLY WEAKENING…

 

 

SUMMARY OF 300 PM MDT…2100 UTC…INFORMATION

———————————————-

LOCATION…21.4N 112.8W

ABOUT 210 MI…340 KM WSW OF CABO SAN LUCAS MEXICO

MAXIMUM SUSTAINED WINDS…45 MPH…75 KM/H

PRESENT MOVEMENT…W OR 270 DEGREES AT 6 MPH…9 KM/H

MINIMUM CENTRAL PRESSURE…1003 MB…29.62 INCHES

 

 

WATCHES AND WARNINGS

——————–

There are no coastal watches or warnings in effect.

 

 

DISCUSSION AND 48-HOUR OUTLOOK

——————————

At 300 PM MDT (2100 UTC), the center of Tropical Storm Norma was

located near latitude 21.4 North, longitude 112.8 West. Norma is

moving toward the west near 6 mph (9 km/h). A continued westward

motion is forecast for the next 24 hours, followed by a gradual

turn toward the north.

 

Maximum sustained winds have decreased to near 45 mph (75 km/h) with

higher gusts. Further weakening is forecast during the next 48

hours and Norma is expected to become a tropical depression by

Tuesday.

 

Tropical-storm-force winds extend outward up to 70 miles (110 km)

from the center.

 

The estimated minimum central pressure is 1003 mb (29.62 inches).

 

 

HAZARDS AFFECTING LAND

———————-

SURF: Swells generated by Norma are affecting portions of the coast

of southwestern Mexico and Baja California Sur and will continue

into Tuesday. These swells are likely to cause life-threatening

surf and rip current conditions. Please consult products from your

local weather office.

 

Tropical Storm Otis

 

 

…OTIS GOING DOWNHILL QUICKLY…

 

 

SUMMARY OF 200 PM PDT…2100 UTC…INFORMATION

———————————————-

LOCATION…19.1N 127.6W

ABOUT 1170 MI…1885 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA

MAXIMUM SUSTAINED WINDS…45 MPH…75 KM/H

PRESENT MOVEMENT…W OR 270 DEGREES AT 2 MPH…4 KM/H

MINIMUM CENTRAL PRESSURE…1005 MB…29.68 INCHES

 

 

WATCHES AND WARNINGS

——————–

There are no coastal watches or warnings in effect.

 

 

DISCUSSION AND 48-HOUR OUTLOOK

——————————

At 200 PM PDT (2100 UTC), the center of Tropical Storm Otis was

located near latitude 19.1 North, longitude 127.6 West. Otis is

moving toward the west near 2 mph (4 km/h). A turn toward the

southwest is expected tonight, and a continued southwestward motion

with an increase in forward speed is forecast through Wednesday.

 

Maximum sustained winds have decreased to near 45 mph (75 km/h)

with higher gusts. Additional weakening is forecast during the next

48 hours, and Otis will likely become a remnant low by tomorrow

afternoon.

 

Tropical-storm-force winds extend outward up to 70 miles (110 km)

from the center.

 

The estimated minimum central pressure is 1005 mb (29.68 inches).

 

 

HAZARDS AFFECTING LAND

———————-

None.

 

 

==============================================================================

CURRENT WEATHER @ HESP. @0718hrs TEMP:570 RH:83% WIND: W 2 G 58.17” RF @ HESP. STA.SINCE JUL 1st/20 Yr Avg: 7.12”  : MONTH:0.04”   YTD S/F: 0.00” /

————————————————————————————–

FIRES: UPDATED

 

National Preparedness Level 4

 

Initial attack activity: Light (76) new fires
New large incidents: 1
Large fires contained: 4
Uncontained large fires:** 26
Area Command Teams Committed: 1
NIMOs committed: 3
Type 1 IMTs committed: 7
Type 2 IMTs committed: 26

 

Two hundred and forty-five soldiers from the 23rd Brigade Engineer Battalion and 1-23 Infantry Battalion based out of Fort Lewis, Washington are deployed in support of the Umpqua North Complex

 

 

Active Incident Resource Summary
GACC Fires Cumulative Acres Crews Engines Helicopters Total Personnel
AICC 0 0 0 0 0 0
NWCC 26 748,561 173 287 56 7,301
ONCC 10 219,209 85 147 42 3,586
OSCC 7 61,984 26 40 6 1,034
NRCC 38 692,044 52 201 35 3,362
GBCC 13 184,319 7 30 6 453
SWCC 3 1,446 1 8 0 80
RMCC 8 16,599 2 20 2 189
EACC 0 0 0 0 0 0
SACC 3 1,760 0 0 0 2
Total 108 1,925,923 346 733 147 16,007

 

Northern California Area (PL 3)

New fires: 19
New large incidents: 0
Uncontained large fires: 4
Type 2 IMTs committed: 5

 

Date Time News and Notes
09/18/2017 1845 CA-KNF-006098 Complex, 100,065 acres timber, 45% contained. Scattered rain and higher relative humidity significantly decreased fire behavior. Burning snags still pose a threat to containment lines Crews continue to improve fire line in areas with potential threats. Suppression repair is ongoing where the threat to containment lines is minimal to nonexistent and on contingency lines that are no longer needed.

 

09/18/2017 1845 CA-SHU Berry Fire 744 acres 25% contained. Crews continue to reinforce control lines and continue firing indirect lines and unburned pockets.

 

09/18/2017 1845 CA-SHF Buck Fire: 3,000 acres, 15% contained. The fire continues to actively burn in heavy dead and down timber and remote locations. Crews continue to use road systems to hold the fire from spreading north of the wilderness.

 

09/18/2017 1845 CA-SHF Helena fire, 21,911 acres grass, brush, and timber 58% contained. The fire continues to slowly spread where the tree canopy sheltered ground fuels from precipitation.

 

09/18/2017 1845 CA-KNF Salmon August Complex, 65,893 acres timber, 50% contained. No growth on the incident due to precipitation over the fire. No structure threats at this time. The Wallow Fire is 65,232 and 50% contained. The Deep Fire is 210 acres and 50% contained. Crews are working on suppression repair and fire line improvement where needed

 

 

 

Southern California Area (PL 3)

New fires: 14
New large incidents: 0
Uncontained large fires: 1

 

Federal Incidents

Pier, Vegetation Fire, Tulare County, Update Highway 190, east of Springville Federal DPA, FRA, Sequoia NF

  • 36,556 acres grass and brush, 94% contained
  • Minimal fire behavior
  • Demobilizing excess resources
  • Burning in tree mortality area

 

Creek, Vegetation Fire, Tuolumne County, Update 6 Miles South East of Cold Springs Federal DPA, FRA, Stanislaus NF

  • 752 acres brush and timber, 5% contained
  • Minimal fire behavior
  • Demobilizing excess resources

 

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