FIRE WEATHER 8/12/19

DAILY FIRE WEATHER & FIRE INFO
To: ALL UNITS From:
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Date: 8/12/19

SKYWARN: NORMAL
NETS ON WED NIGHT @1900 HEAPS PK./WX
SKYWARN NET TUESDAY @ 1900 HRS TABLE Mt.
BRIEFS TABLE MT. ON SUN @ 1800 HRS

DAYS NO R.F. @ STA.:82

National Preparedness Level (PL 3 )

Southern California Area Preparedness Level: (PL 2 )

Northern California Area Preparedness Level (PL 2 )

GREEN = PL: 1 BLUE – PL:2 YELLOW = PL:3 ORANGE = PL:4 RED = PL: 5
==============================================================================
SYNOP: (NWS SAN DIEGO)
Dry weather will continue through at least next weekend. High pressure to the south will bring a warming trend through Wednesday with the marine layer becoming shallower. Slow cooling will begin to spread inland on Thursday with greater cooling for Friday into the weekend as a low pressure system moves inland through the western states. This will also deepen the marine layer with gusty southwest to west winds in the mountains and deserts each late afternoon through late evening. Lower inland humidity and the gusty southwest to west winds will produce near critical fire weather conditions for Wednesday through Friday for the desert slopes of the mountains into the deserts during the afternoon and early evening each day. Inland humidity will begin to recover on Saturday as stronger onshore flow brings a greater inland push of the marine layer and higher humidity.

· High temperatures will warm 3-5 degrees each day through Wednesday. By then, highs will reach the upper 90s to 105 in the valleys and lower foothills. Thursday into the weekend, look for readings to drop back to near to slightly below normal readings.

· Minimum RH will be in the teens today. Look for min RH to drop into the 8-12% range for 6 hours Tuesday and Wednesday above 3,000 feet. The lowest readings will be on desert-adjacent sides of the Angeles, San Bernardino and Cleveland N.F.

· Local northwest winds of 10-20 mph with gusts to 25 mph along the I-5 Corridor and Kern County mountains today. Light winds expected Tuesday and Wednesday, but look for windy weather to return to these areas Thursday into the weekend.
· No thunderstorms through the next 10 days.

CONFIDENCE AND DETAILS
Heatwave – Hottest Conditions over the Lower Deserts
Moderate
Confidence
Excessive heat for the lower deserts and Coachella Valley. Heat-related illnesses likely with prolonged exposure (if precautions are not taken ).
Details
– What: An Excessive Heat Watch is in effect for the lower deserts for Wednesday and Thursday.
– Where: Inland areas will be the hottest, most extreme temperatures in the lower deserts (around 115°).
Temperatures for the inland valleys will be around 100°.
– When: Wednesday through Thursday.

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
Continued dryness throughout the next several days will compound to further cure fuels area-wide while Min RH values decrease each day through the week. Winds should remain rather benign other than a few afternoon gusts up to about 25 mph. However, by Friday, wind fields are expected to increase out of the southwest and could result in near-critical to critical fire weather conditions, especially in higher terrain areas. These conditions could also persist through Saturday.

CONFIDENCE AND DETAILS
Heat Risk Mid-week
HIGH Confidence
Higher temperatures will likely increase heat-related emergency calls Homeless, the elderly, children and those already with health issues are the most at risk Increased risk to children and pets left unattended in hot vehicles or outdoors.
Details:
Wednesday and Thursday
Heat Risk will reach Category 3 (High) or 4 (extreme) in areas such as Laughlin/Bullhead City, Lake Havasu, Kingman, Lakes Mead and Mohave. Las Vegas Valley risk moderate to high (lower impact confidence) High Temps: 110-115 / Low Temps: 85-90 Elevated overnight temps are a compelling factor in driving heat impacts due to long-duration heat, with little to no relief overnight. For more information visit: https://www.wrh.noaa.gov/wrh/heatrisk/
Fire Weather Concerns Fri/Sat
MODERATE Confidence Extreme fire behavior and rapid fire growth.
Details:
Friday & Saturday
Very dry atmosphere and elevated southwest winds will result in near-critical to critical fire weather concerns across southern Nevada and southeast California. Highest risk during afternoon and early evening hours.

FLASH FLOOD POTENTIAL INDEX FOR EXTREME SOUTHWESTERN CALIFORNIA
DRY WEATHER WILL CONTINUE THROUGH AT LEAST NEXT WEEKEND.
MONDAY TUESDAY
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

SPECIAL NOTES:

DAILY FUELS/FIRE POTENTIAL:
Sunny and warm weather will produce ideal drying conditions which should further push dead fuels to well below normal readings for this time of year. Even 1,000 hour large diameter fuels are trending close to the 10 percentile with the driest conditions over Central CA. Live fuels continue to lag around 4 weeks behind normal with moisture readings more indicative of early July over many areas. But should long range models prove correct, 10 out of the next 14 days will be sunny with above normal temperatures which should cause live fuel moisture to trend rapidly downward. Expect moderate IA today through Wednesday, but stable conditions and a lack of wind should allow most new starts to be picked up by local resources. Warm, dry weather over areas that received lightning last week may result in an increase in out of region demand in such areas as Northern CA and the western Great Basin the next few days.

• Fire Danger / Dispatch Levels / Burn Status

• VALLEY: HIGH HIGH SRA: SUSPENDED LOCAL: NO

• DESERT: HIGH HIGH SRA: SUSPENDED LOCAL: YES

• MOUNTAINS: HIGH HIGH SRA: SUSPENDED LOCAL: NO

• OWENS VALLEY: HIGH HIGH SRA: SUSPENDED LOCAL: YES

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

————————————————————————————–
APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):
TODAY… Sky/weather………Mostly sunny.
Max temperature…..93 to 99. 24 HR TREND……Up 4 degrees.
Min humidity……..10 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 3 to 6 mph becoming south 6 to 11 mph with gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..61 to 71. 24 HR TREND……Down 3 degrees.
Max humidity……..25 to 35 percent. 24 HR TREND……Down 25 percent.
WIND (20 FT)……..Winds west 6 to 11 mph. Gusts to 25 mph in the evening.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY… Sky/weather………Sunny.
Max temperature…..96 to 102. 24 HR TREND……Up 3 degrees.
Min humidity……..5 to 10 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Variable 2 to 5 mph becoming south 6 to 11 mph with gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*WRIGHTWOOD:
Today
Sunny, with a high near 79. South wind 5 to 10 mph becoming east in the morning.
Tonight
Mostly clear, with a low around 62. South wind 5 to 10 mph.
Tuesday
Sunny, with a high near 82. South wind 5 to 10 mph.
Tuesday Night
Clear, with a low around 64. Southwest wind 5 to 10 mph.

*BIG PINES / WEST WRIGHTWOOD AREA
Today
Sunny, with a high near 75. Northwest wind around 5 mph becoming south southwest in the morning.
Tonight
Clear, with a low around 59. West southwest wind 5 to 10 mph.
Tuesday
Sunny, with a high near 78. South wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Clear, with a low around 61. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

*PHELAN:
Today
Sunny, with a high near 88. Light and variable wind becoming south 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 65. South wind 5 to 15 mph becoming west in the evening. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 91. Light southeast wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tuesday Night
Clear, with a low around 68. South wind 5 to 15 mph, with gusts as high as 20 mph.

*TRONA:
TODAY… Sky/weather………Sunny.
Max Temperature…..94-99. 24 HR Trend……Up 2-4 degrees.
Min Humidity……..7-12 percent. 24 HR Trend……Down 2-4 percent.
20-Foot Winds…….East 3-7 mph in the morning shifting to the south by afternoon.
LAL……………..1.
Ventilation………Very good.
Mixing height…….9900 ft AGL.
Transport Winds…..Northeast around 5 mph in the morning shifting to the south in the afternoon.
Chc Wetting Rain….0 percent.

.TONIGHT… Sky/weather………Clear.
Min Temperature…..68-73. 24 HR Trend……Up 2-4 degrees.
Max Humidity……..24-34 percent. 24 HR Trend……Down 7-12 percent.
20-Foot Winds…….West 4-8 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.TUESDAY… Sky/weather………Sunny.
Max Temperature…..97-102. 24 HR Trend……Up 2-4 degrees.
Min Humidity……..5-10 percent. 24 HR Trend……Down 1-3 percent.
20-Foot Winds…….South to southwest 3-8 mph.
LAL……………..1.
Ventilation………Excellent.
Mixing height…….12300 ft AGL.
Transport Winds…..Northwest around 5 mph in the morning shifting to the south in the afternoon.
Chc Wetting Rain….0 percent.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….103-108. * 24 hr trend…..On average up 4 degrees.
* Min humidity: * Valley floor….7-12 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….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TONIGHT… * Sky/Weather………Clear.
* Min temperature: * Valley floor….66-71. * 24 hr trend…..On average up 3 degrees.
* Max humidity: * Valley floor….25-30 percent. * 24 hr trend…..On average down 6 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Southwest wind up to 10 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TUESDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….105-110. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * Valley floor….5-9 percent. * 24 hr trend…..On average down 2 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….South wind up to 10 mph.
* 10000 ft msl….Southwest 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

*BAKER:
Today
Sunny and hot, with a high near 106. South wind 5 to 7 mph.
Tonight
Clear, with a low around 76. South southeast wind around 7 mph.
Tuesday
Sunny and hot, with a high near 109. South wind around 6 mph.
Tuesday Night
Clear, with a low around 79. South southeast wind 3 to 6 mph.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS:
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….94-99. * 7000 feet…….79-84. * 24 hr trend…..On average up 5 degrees.
* Min humidity: * Valley floor….7-10 percent. * 7000 feet…12-22 percent. * 24 hr trend…..On average down 2 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming southeast 10 to 15 mph in the afternoon.
* Upper slopes….Southeast winds 10 to 15 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….59-64. * 7000 feet…….34-39. * 24 hr trend…..On average up 3 degrees.
* Max humidity: * Valley floor….27-32 percent. * 7000 feet…40-45 percent. * 24 hr trend…..On average down 7 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….South winds around 10 mph with gusts to around 25 mph shifting to the west up to 10 mph after midnight.
* Upper slopes….Southwest winds 10 to 15 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TUESDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….97-102. * 7000 feet…….82-87. * 24 hr trend…..On average up 3 degrees.
* Min humidity: * Valley floor….6-9 percent. * 7000 feet…10-20 percent. * 24 hr trend…..On average down 2 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming southeast 10 to 15 mph in the afternoon.
* Upper slopes….South winds 10 to 15 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

INLAND EMPIRE (CAZ248):
TODAY… Sky/weather………Mostly sunny.
Max temperature…..88 to 96. 24 HR TREND……Up 2 degrees.
Min humidity……..20 to 25 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 2 to 5 mph becoming west 6 to 10 mph with gusts to 20 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..61 to 66. 24 HR TREND……Up 3 degrees.
Max humidity……..65 to 75 percent. 24 HR TREND……Down 20 percent.
WIND (20 FT)……..Winds west 6 to 10 mph with gusts to 20 mph in the evening becoming variable 2 to 4 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY… Sky/weather………Sunny.
Max temperature…..93 to 101. 24 HR TREND……Up 5 degrees.
Min humidity……..10 to 15 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 2 to 5 mph becoming west 6 to 10 mph with gusts to 20 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*DEVORE:
Today
Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
Mostly clear, with a low around 64. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Tuesday
Sunny, with a high near 97. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night
Clear, with a low around 67. Southwest wind 5 to 10 mph becoming light and variable in the evening.

*CHINO HILLS:
Today
Sunny, with a high near 85. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Clear, with a low around 62. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 25 mph.
Tuesday
Sunny, with a high near 90. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tuesday Night
Clear, with a low around 65. Southwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.

*COLTON:
Today
Sunny, with a high near 94. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Tonight
Mostly clear, with a low around 67. Southwest wind 5 to 10 mph becoming light after midnight.
Tuesday
Sunny, with a high near 99. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Clear, with a low around 70. Southwest wind 5 to 10 mph becoming light in the evening.

SAN BERNARDINO N.F. (CAZ255/CAZ256):
TODAY… Sky/weather………Mostly sunny.
Max temperature…..70 to 80 above 6000 feet to 78 to 88 below 6000 feet. 24 HR TREND……Up 8 degrees.
Min humidity……..15 to 20 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..
SLOPES………..Winds south 6 to 11 mph with gusts to 25 mph.
RIDGETOP………Winds south 6 to 11 mph with gusts to 25 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT…Sky/weather………Clear.
Min temperature…..49 to 59 above 6000 feet to 66 below 6000 feet. 24 HR TREND……Up 6 degrees.
Max humidity……..25 percent on desert slopes to 35 to 45 percent on coastal slopes. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds south 6 to 11 mph. Gusts to 25 mph in the evening.
RIDGETOP………Winds south 6 to 8 mph. Gusts to 20 mph after midnight.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY… Sky/weather………Sunny.
Max temperature…..74 to 84 above 6000 feet to 82 to 92 below 6000 feet. 24 HR TREND……Up 5 degrees.
Min humidity……..10 to 15 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds south 6 to 12 mph with gusts to 25 mph.
RIDGETOP………Winds southwest 6 to 11 mph with gusts to 25 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*LAKE ARROWHEAD SCHOOL- AREA:
Today
Sunny, with a high near 79. South wind 5 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 64. Southeast wind 5 to 10 mph.
Tuesday
Sunny, with a high near 83. South wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Clear, with a low around 67. South wind 5 to 10 mph.

*BIG BEAR SCHOOL AREA:
Today
Sunny, with a high near 79. Southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 48. West wind around 5 mph becoming south after midnight.
Tuesday
Sunny, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Clear, with a low around 50. Southwest wind 5 to 10 mph.

BANNING PASS:
TODAY… Sky/weather………Mostly sunny.
Max temperature…..101 to 106. 24 HR TREND……Up 1 degree.
Min humidity……..15 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Variable 2 to 5 mph becoming southeast around 6 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..75 to 83. 24 HR TREND……Up 3 degrees.
Max humidity……..20 to 30 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Winds west 6 to 11 mph with gusts to 25 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY… Sky/weather………Sunny.
Max temperature…..103 to 108. 24 HR TREND……Up 4 degrees.
Min humidity……..10 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 2 to 5 mph becoming southeast around 6 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ261):
TODAY… * Sky/weather…………………Sunny.
* Max Temperature……………..89-103. * 24 hr trend………………3 degrees warmer.
* Min Humidity………………..11-16 pct. * 24 hr trend………………Little RH change.
* Winds – 20 foot…Slope/Valley..Southwest 5 to 10 mph in the morning becoming south 5 to 15 mph in the afternoon.
* Winds…10000 FT MSL…………South 10 to 20 mph.
* Chance of Precip…………….0 percent.
* CWR (>= 0.10 IN)…………….0 percent.
* LAL………………………..1.
* Haines High Level Index………5 or moderate potential for large plume dominated fire growth.

.TONIGHT… * Sky/weather…………………Clear.
* Min Temperature……………..67-78. * 24 hr trend………………Little change.
* Max Humidity………………..26-33 pct. * 24 hr trend………………3 pct drier.
* Winds – 20 foot…Slope/Valley..Southwest 5 to 15 mph.
* Winds…10000 FT MSL…………Light and variable in the evening becoming south 5 to 15 mph after midnight.
* Chance of Precip…………….0 percent.
* CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.

.TUESDAY… * Sky/weather…………………Sunny.
* Max Temperature……………..92-105. * 24 hr trend………………3 degrees warmer.
* Min Humidity………………..11-16 pct. * 24 hr trend………………Little RH change.
* Winds – 20 foot…Slope/Valley..East 5 to 10 mph in the morning becoming south in the afternoon.
* Winds…10000 FT MSL…………Southwest 10 to 20 mph.
* Chance of Precip…………….0 percent.
* CWR (>= 0.10 IN)…………….0 percent.
* LAL………………………..1.
* Haines High Level Index………5 or moderate potential for large plume dominated fire growth.

NEEDLES, RIVER BAT. (CAZ229):
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….108-113. * 24 hr trend…..On average up 3 degrees.
* Min humidity: * Valley floor….5-11 percent. * 24 hr trend…..On average down 2 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph becoming south around 10 mph in the afternoon.
* 10000 ft msl….South 20 to 30 mph decreasing to 10 to 15 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.
* Mixing height…….10100 ft agl.
* Transport winds…..Light winds becoming south around 10 knots in the afternoon.
* Ventilation………Excellent.

.TONIGHT… * Sky/Weather………Clear.
* Min temperature: * Valley floor….76-81. * 24 hr trend…..On average up 2 degrees.
* Max humidity: * Valley floor….20-25 percent. * 24 hr trend…..On average down 3 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Southeast wind up to 10 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TUESDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….110-115. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * Valley floor….4-10 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph becoming south up to 10 mph in the afternoon.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.
* Mixing height…….11000 ft agl.
* Transport winds…..Light winds becoming south around 10 knots in the afternoon.
* Ventilation………Very good.

STATELINE – CLARK COUNTY BORDER:
TODAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….99-104. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * 4000 feet…….8-11 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming south around 10 mph in the afternoon. Gusts up to 25 mph.
* 10000 ft msl….South 15 to 25 mph decreasing to 10 to 15 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.
* Mixing height…….11400 ft agl.
* Transport winds…..Light winds.
* Ventilation………Fair.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * 4000 feet…….68-73. * 24 hr trend…..On average up 4 degrees.
* Max humidity: * 4000 feet…….22-27 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Southwest winds up to 10 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TUESDAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….103-108. * 24 hr trend…..On average up 4 degrees.
* Min humidity: * 4000 feet…….7-10 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming south around 10 mph in the afternoon.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent.
* LAL……………..1. * Haines Index……..5.
* Mixing height…….13100 ft agl.
* Transport winds…..Light winds.
* Ventilation………Good.

*************************** OUT OF COUNTY ********************************
ELEVATED TO BRIEF CRITICAL FIRE WEATHER CONDITIONS ACROSS THE INTERIOR
MOUNTAINS, VALLEYS, AND DESERTS OF SOUTHWEST CALIFORNIA MONDAY THROUGH
THURSDAY DUE TO LOCALLY GUSTY ONSHORE WINDS COMBINED WITH VERY WARM
TEMPERATURES AND LOW HUMIDITIES…

LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ247/CAZ249):
MONDAY… Sky/weather………Mostly sunny.
Max temperature…..87-95. 24 hr trend……Up 3.
Min humidity……..25-45 percent. 24 hr trend……Down 3.
20-foot winds…….Variable 3-6 mph becoming south 6-12 mph with local gusts to 20 mph in the afternoon.
Marine layer……..1500 ft asl. LAL……………..1. CWR (>0.10 IN)……0 percent.

.MONDAY NIGHT… Sky/weather………Mostly clear.
Min temperature…..59-66.
Max humidity……..70-90 percent.
20-foot winds…….Southwest 6-12 mph with local gusts to 20 mph early becoming variable 3-6 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.TUESDAY… Sky/weather………Mostly sunny.
Max temperature…..89-99.
Min humidity……..15-35 percent.
20-foot winds…….Variable 3-6 mph becoming south 6-12 mph with local gusts to 20 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANGELES NATIONAL FOREST (CAZ253):
MONDAY… Sky/weather………Sunny.
Max temperature…..88-95 low elevations to 78-86 higher elevations. 24 hr trend……Up 4.
Min humidity……..10-25 percent. 24 hr trend……Down 5.
20-foot winds…….
Valleys/lwr slopes…Northwest 6-12 mph becoming southwest 8-15 mph with gusts to 25 mph in the afternoon.
Ridges/upr slopes….Northwest 6-12 mph becoming southwest 8-15 mph with gusts to 25 mph in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.MONDAY NIGHT… Sky/weather………Clear.
Min temperature…..65-72 low elevations to 56-63 colder valleys and peaks.
Max humidity……..20-40 percent.
20-foot winds…….
Valleys/lwr slopes…Southwest 8-15 mph with gusts to 20 mph in the evening becoming west 6-12 mph.
Ridges/upr slopes….Southwest 8-15 mph with gusts to 20 mph in the evening becoming west 6-12 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.TUESDAY… Sky/weather………Sunny.
Max temperature…..90-98 low elevations to 80-88 higher elevations.
Min humidity……..7-15 percent.
20-foot winds…….
Valleys/lwr slopes…Southwest 6-12 mph becoming south 8-15 mph with gusts to 25 mph in the afternoon.
Ridges/upr slopes….Southwest 6-12 mph becoming south 8-15 mph with gusts to 25 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANTELOPE VALLEY (CAZ259):
MONDAY… Sky/weather………Sunny.
Max temperature…..92-99. 24 hr trend……Up 5.
Min humidity……..8-12 percent. 24 hr trend……Down 5.
20-foot winds…….West 8-15 mph becoming southwest 10-20 mph with gusts to 30 mph in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.MONDAY NIGHT… Sky/weather………Clear.
Min temperature…..58-64 except 67-72 in the hills.
Max humidity……..25-40 percent.
20-foot winds…….Southwest 10-20 mph with gusts to 30 mph in the evening becoming 6-12 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.TUESDAY… Sky/weather………Sunny.
Max temperature…..95-102.
Min humidity……..5-8 percent.
20-foot winds…….Southwest 6-12 mph becoming 10-20 mph with gusts to 30 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

KERN CO. DESERTS (CAZ298):
TODAY… Sky/weather………Sunny.
Max Temperature…..92-97. 24 HR Trend……Up 4-8 degrees.
Min Humidity……..13-23 percent. 24 HR Trend……Down 5-10 percent.
20-Foot Winds…….West 4-8 mph in the morning shifting to the south by afternoon.
LAL……………..1.
Ventilation………Very good.
Mixing height…….9700 ft AGL.
Transport Winds…..North around 5 mph in the morning shifting to the south in the afternoon.
Chc Wetting Rain….0 percent.

.TONIGHT… Sky/weather………Clear.
Min Temperature…..63-68. 24 HR Trend……Up 2-4 degrees.
Max Humidity……..39-49 percent. 24 HR Trend……Down 9-14 percent.
20-Foot Winds…….West 5-10 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.TUESDAY… Sky/weather………Sunny.
Max Temperature…..95-100. 24 HR Trend……Up 2-4 degrees.
Min Humidity……..8-18 percent. 24 HR Trend……Down 1-3 percent.
20-Foot Winds…….West 3-8 mph in the morning shifting to the south by afternoon.
LAL……………..1.
Ventilation………Excellent.
Mixing height…….12400 ft AGL.
Transport Winds…..Southwest 5 to 10 mph.
Chc Wetting Rain….0 percent.

*La Jolla CA
Today
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 69. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 63. West wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 71. Light north wind becoming northwest 5 to 10 mph in the morning.
Tuesday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 65. Northwest wind around 5 mph becoming calm in the evening.

*Poway CA
Today
Patchy fog before 8am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 63. West wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 66. Northwest wind around 5 mph becoming calm.

*CEDAR CITY Ut.
Today
Sunny, with a high near 87. Light and variable wind becoming south southwest 8 to 13 mph in the afternoon.
Tonight
Clear, with a low around 58. South southwest wind 6 to 14 mph becoming southeast after midnight.
Tuesday
Sunny, with a high near 89. Light and variable wind becoming southwest 6 to 11 mph in the afternoon.
Tuesday Night
Clear, with a low around 59. Southwest wind 6 to 8 mph becoming southeast after midnight.

============================================================
THIS DAY IN WEATHER HISTORY:
2017: Two giant supercell thunderstorms unleashed their fury on the Anza Borrego Desert. Flash flooding and wind damage occurred around Agua Caliente Springs and Canebrake.

2014: A heavy thunderstorm produced a debris flow on the Banner Grade east of Julian that was one to two feet deep along Hwy. 78. The Banner Fire burn scar contributed to this flow.

2012: Strong wet microburst winds hit east Perris. Several power poles were snapped off completely, trapping several vehicles. Roof damage was observed. In nearby Nuevo, a land spout was observed, but caused no damage. A funnel cloud was observed north of Lake Elsinore in the Alberhill area. This was part of the same thunderstorm complex, but not associated with the land spout.

1998: Strong thunderstorms developed each day in the valleys and the deserts starting on this day and ending on 8/14. Flash flooding and very strong winds resulted in Apple Valley. A thunderstorm in Hemet produced a downburst with winds to 70 mph and 0.75 inch hail that damaged buildings, trees, and power lines. Golf ball size hail fell at Cajon Pass. 1.6 inches of rain fell in 30 minutes at Boulevard.

1994: A tornado touched down in Valle Vista (east of Hemet) and several funnel clouds were also observed in Hemet. A home was damaged and a trailer was destroyed. Trees were uprooted and power poles were blown over.

1990: A severe thunderstorm struck the Warner Springs and Ranchita area. Golf ball size hail was common and the largest measured hail was fully two inches in diameter. There were also 30-40 mph winds with the storm.

1986: A severe thunderstorm struck Needles. Streets were flooded and motorists were stranded. Winds blew out windows of several businesses and ripped off a roof of an apartment building.

1972: Tropical Storm Diane sent moisture into the region which produced thunderstorms across Southern California. 2.1 inches of rain fell in Lucerne Valley in less than one hour. 0.38 inch fell in Riverside, and 0.31 inch in Big Bear Lake. Flash floods left a foot of silt on downtown Lucerne Valley and closed several highways, including Interstate 15 northeast of Barstow. Lightning in Norco killed a boy.

1971: During each day from 8/11 to 8/13 it was 100° in Palomar Mountain. This highest temperature on record occurred on five other days as well.

1933: A heat wave began on 8/10 and ended on 8/13 in the valleys; temperatures topped 110° for several consecutive days. Riverside hit 114° on this day, the highest temperature on record for August.

1891: Two thunderstorms merged and produced a rainfall of 16.10 inches at Campo; 11.50 inches of it fell in 80 minutes, a record 80 minute rainfall for the state, and at one time the record 80 minute rainfall for the nation.

1873: 1.95 inches of rain fell in San Diego from a tropical storm on 8/11 and on this day. 1.80 inches fell on this day, the wettest calendar day in August on record. 1.72 inches fell in Paradise Valley (SE San Diego). Nearly three inches fell in “Cajon Ranch” (probably El Cajon). This was called the greatest summer rainfall in history. The previous daily August rainfall record was 0.31 inch in 1867. One foot of water was reported on the ground in Cajon Ranch. Winds “stiffened up to quite a gale”. Damage was done to roof tops and trees were felled.

==================================================================
TROPICAL EAST PACIFIC REPORT:
Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Mon Aug 12 2019

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

The National Hurricane Center is issuing advisories on recently upgraded Tropical Storm Henriette, located a few hundred miles south-southwest of the southern tip of the Baja California peninsula.

An elongated area of showers and thunderstorms located just over 1000 miles southwest of the southern tip of the Baja California peninsula is associated with a trough of low pressure. Environmental conditions are forecast to become more conducive for development during the next few days, and a tropical depression could form later this week while the system moves west- northwestward at around 15 mph.
* Formation chance through 48 hours…low…20 percent.
* Formation chance through 5 days…medium…60 percent.

BULLETIN
Tropical Storm Henriette Advisory Number 2
NWS National Hurricane Center Miami FL EP092019
300 AM MDT Mon Aug 12 2019

…HENRIETTE FORMS BUT EXPECTED TO WEAKEN BY TUESDAY…

SUMMARY OF 300 AM MDT…0900 UTC…INFORMATION
———————————————-
LOCATION…19.5N 110.9W
ABOUT 245 MI…390 KM SSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS…40 MPH…65 KM/H
PRESENT MOVEMENT…WNW OR 295 DEGREES AT 14 MPH…22 KM/H
MINIMUM CENTRAL PRESSURE…1005 MB…29.68 INCHES

======================================================================
CURRENT WEATHER @ HESP. @ 0855 Hrs. TEMP: 740 RH: 34% WIND: CALM
7.63” RF @ HESP. STA.SINCE OCT. 1st/20 Yr Avg: 7.12” : MONTH: 0.00” YTD S/F: 1.00” /
=================================================================
FIRES: UPDATED

National Preparedness Level (PL 3)
Nationally, 61 large fires have burned 1.3 million acres in 10 western states and Alaska. Firefighters reached containment goals on six large fires yesterday.

Daily statistics 8/12/19
Number of new large fires or emergency response 2 States currently reporting large fires:
Number of active large fires
Total does not include individual fires within complexes. 61 Alaska (21)
Arizona (2)
California (2)
Colorado (1)
Idaho (7)
Montana (7)
Nevada (1)
New Mexico (6)
Oregon (5)
Utah (6)
Washington (2)
Acres from active fires 1,312,193
Fires contained 6
Year-to-date statistics
2019 (1/1/19 – 8/12/19) Fires: 29,119 Acres: 3,617,356
2018 (1/1/18 – 8/12/18) Fires: 40,162 Acres: 5,732,610
2017 (1/1/17 – 8/12/17) Fires: 41,562 Acres: 6,216,626
2016 (1/1/16 – 8/12/16) Fires: 36,948 Acres: 3,825,204
2015 (1/1/15 – 8/12/15) Fires: 39,609 Acres: 6,471,748
2014 (1/1/14 – 8/12/14) Fires: 35,751 Acres: 2,533,648
2013 (1/1/13 – 8/12/13) Fires: 30,198 Acres: 2,795,301
2012 (1/1/12 – 8/12/12) Fires: 40,228 Acres: 5,619,966
2011 (1/1/11 – 8/12/11) Fires: 47,768 Acres: 6,284,134
2010 (1/1/10 – 8/12/10) Fires: 42,600 Acres: 2,179,113
2009 (1/1/09 – 8/12/09) Fires: 60,412 Acres: 5,060,162
10-year average Year-to-Date
2009-2018 Fires: 41,199 Acres: 4,583,248

Initial attack activity: Moderate (241 new fires)
New large incidents: 2
Large fires contained: 6
Uncontained large fires:*** 18
Area Command teams committed: 0
NIMOs committed: 1
Type 1 IMTs committed: 1
Type 2 IMTs committed: 7

Active Incident Resource Summary
GACC Incidents Cumulative Acres Crews Engines Helicopters Total Personnel
AICC 6 772,859 9 0 3 365
NWCC 11 66,295 63 110 22 2,379
ONCC 1 1,777 4 0 1 109
OSCC 2 1,036 7 10 1 222
NRCC 15 26,244 38 46 13 1,563
GBCC 26 149,141 48 111 17 2,054
SWCC 11 29,318 4 29 3 270
RMCC 3 261 0 0 0 8
EACC 0 0 0 0 0 0
SACC 5 17,899 0 2 0 45
Total 80 1,064,831 173 308 60 7,015

CDF FIRES TO DATE (STATE LANDS SRA)
Interval Fires Acres
January 1, 2019 through August 4, 2019 2,971 22,949
January 1, 2018 through August 4, 2018 3,661 615,771
5-Year Average (same interval) 3,572 245,850
2019 Combined YTD (CALFIRE & US Forest Service) 3,487 45,364

Southern California Area (PL 2 )
New fires: 29
New large incidents: 0
Uncontained large fires: 1

Springs, Vegetation Fire, Mono County, Update
13 miles southeast of Lee Vining
Federal DPA, FRA Inyo National Forest
• 352 (+332) acres, grass and brush, 10% contained (+9% containment)
• Moderate rate of spread with flanking, backing and creeping
• Suppression strategy is monitor/confine
• Incident submitting one ICS-209 Thursdays at 1800
Cow, Vegetation Fire, Tulare County, Update
Golden Trout Wilderness, 13 miles west of Olancha
Federal DPA, FRA Inyo National Forest
• 11(+10) acres, grass and brush, 1% contained (+1% containment)
• Minimal fire behavior with creeping, backing and flanking
• Suppression strategy is monitor/confine
• Incident submitting one ICS-209 Thursdays at 1800
Kelty, Vegetation Fire, Mono County, Update
13 miles west of Benton
Federal DPA, FRA Inyo National Forest
• .9 (+.5) acres grass and brush, 0% contained (+0% containment)
• Minimal fire behavior with smoldering and creeping
• Suppression strategy is monitor/confine
• Incident submitting one ICS-209 Thursdays at 1800
PRESTON FIRE General Information
Last Updated 8/8/2019
Date Started 8/8/2019
Location Information 10,000 Block Preston Lane, Jamestown
Lat/Long [37.949747, -120.420058]
Status Active
Percentage Contained 0%
Acres Burned 24
Fuel Type
Administrative Unit CAL FIRE TCU

R-1 FIRE General Information
Last Updated 8/8/2019
Date Started 8/7/2019
Location Information Juniper Ridge Road and Juniper Tree Road, north of Ravendale
Lat/Long [40.886677, -120.336977]
Status Active
Percentage Contained 85%
Acres Burned 130
Fuel Type
Administrative Unit BLM Northern California District

Northern California Area (PL 2 )
New fires: 61
New large incidents: 0
Uncontained large fires: 0

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