WEATHER 1/13/20

DAILY FIRE WEATHER & FIRE INFO
ALL UNITS From:
EMAIL: pdupree@bdcecs.org
Ph: OFFICE:(760) 559-3032
AFTER 2200 HRS CALL: (760)-244-9790
RADIO:(HAM) KG6ZHW
COUNTY F.D RADIO: #733784 CALL SIGN: COM-330

Date: 1/13/20

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.: 16

National Preparedness Level (PL 1 )

Southern California Area Preparedness Level: (PL 1 )

Northern California Area Preparedness Level (PL 1 )

GREEN = PL: 1 BLUE – PL:2 YELLOW = PL:3 ORANGE = PL:4 RED = PL: 5
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SYNOP: (NWS SAN DIEGO)
A weak trough of low pressure and onshore flow will maintain higher humidity and cooler than average temperatures through Wednesday with gusty west winds in the mountains and deserts. A low pressure system will move quickly inland through southern California on Thursday bringing stronger and gusty west winds in the mountains and deserts and a period of wetting precipitation
from the coast to the mountains. Drier weather with a warming trend will follow for Friday through Sunday.

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
A couple of weather disturbances will move through this week. The first, will bring windy conditions to the Sierra tonight and Tuesday. The second, will spread gusty winds and precip chances across the southern Great Basin and Mojave Desert on Thursday. More tranquil weather is expected this weekend as high pressure builds in.

KEY POINTS
No significant weather for most of the region until Thursday when a quick moving system will bring gusty southwest winds and chances
for precipitation with potential for light snow above 4500 feet.

CONFIDENCE AND DETAILS
Southern NV, Northwest AZ and San Bernardino County, CA

MODERATE Confidence Hazardous crosswinds, especially for high profile vehicles.
Hazardous boating conditions on Lake Mead due to strong winds and significant wave activity.
LOW Confidence Localized hazardous travel conditions in mountains of southern NV and far northwest Arizona due to snow covered roads.

Details:
Thursday
A belt of southwest winds gusting 35-50 mph possible extending across the San Bernardino County deserts up across southern Nevada late morning through the afternoon.
A quick shot of precipitation will be possible across most zones as moisture spreads from northwest to southeast during the afternoon and evening followed by clearing Thursday night. Snow levels will be around 4500 feet.

DAILY FUELS/FIRE POTENTIAL: N/A

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

————————————————————————
APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):
.TODAY… Sky/weather………Sunny.
Max temperature…..55 to 60. 24 HR TREND……Down 3 degrees.
Min humidity……..25 to 30 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds west 6 to 13 mph. Gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..31 to 37. 24 HR TREND……Down 1 degree.
Max humidity……..65 to 75 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Winds southwest 6 to 9 mph. Gusts to 20 mph after midnight.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY… Sky/weather………Mostly sunny.
Max temperature…..57 to 64. 24 HR TREND……Up 1 degree.
Min humidity……..20 to 25 percent. 24 HR TREND……Down 10 percent.
WIND (20 FT)……..Winds west 6 to 12 mph with gusts to 25 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*WRIGHTWOOD:
Monday
Sunny, with a high near 50. Breezy, with a west wind 15 to 25 mph decreasing to 5 to 15 mph in the afternoon. Winds could gust as high as 40 mph.
Monday Night
Mostly clear, with a low around 34. West wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 51. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 33. West wind 10 to 15 mph, with gusts as high as 30 mph.

*BIG PINES / WEST WRIGHTWOOD AREA
Monday
Sunny, with a high near 51. Wind chill values as low as 25 early. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 33. Wind chill values as low as 20. Northwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 50. Breezy, with a northwest wind around 20 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 34. Breezy.

*PHELAN:
Monday
Sunny, with a high near 53. West wind 10 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 37. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 55. West wind 5 to 10 mph becoming northwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 35. West wind 5 to 10 mph.

TRONA (INDIAN WELLS) (CAZ298):
.MONDAY… Sky/weather………Sunny.
Max Temperature…..51-56. 24 HR Trend……Little change.
Min Humidity……..29-39 percent. 24 HR Trend……Down 2-4 percent.
20-Foot Winds…….Northwest 3-11 mph in the early morning shifting to the west 3-8 mph by afternoon.
LAL……………..1.
Ventilation………Marginal. Mixing height…….2500 ft AGL.
Transport Winds…..North around 5 mph in the morning shifting to the southwest in the afternoon.
Chc Wetting Rain….0 percent.

.MONDAY NIGHT… Sky/weather………Clear.
Min Temperature…..29-34. 24 HR Trend……Little change.
Max Humidity……..63-73 percent. 24 HR Trend……Up 3-5 percent.
20-Foot Winds…….West 3-8 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.TUESDAY… Sky/weather………Sunny.
Max Temperature…..52-57. 24 HR Trend……Little change.
Min Humidity……..28-36 percent. 24 HR Trend……Down 1-3 percent.
20-Foot Winds…….West 3-9 mph.
LAL……………..1.
Ventilation………Fair. Mixing height…….2300 ft AGL. Transport Winds…..West 5 to 10 mph.
Chc Wetting Rain….0 percent.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….58-63. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….22-31 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….West 20 to 30 mph increasing to 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….31-36. * 24 hr trend…..Little change.
* Max humidity: * Valley floor….63-68 percent. * 24 hr trend…..On average down 2 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Southwest wind up to 10 mph. Gusts up to 25 mph after midnight.
* 10000 ft msl….West 25 to 35 mph increasing to 30 to 40 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TUESDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….61-66. * 24 hr trend…..On average up 3 degrees.
* Min humidity: * Valley floor….21-27 percent. * 24 hr trend…..On average down 2 percent.
* 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 40 to 50 mph decreasing to 35 to 45 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

*BAKER:
Monday
Sunny, with a high near 58. Light and variable wind.
Monday Night
Mostly clear, with a low around 31. South southeast wind around 6 mph.
Tuesday
Sunny, with a high near 62. South southeast wind around 8 mph becoming west southwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 31. North wind 3 to 6 mph.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS (CAZ226):
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….51-56. * 7000 feet…….44-49. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….22-32 percent. * 7000 feet….28-38 percent. * 24 hr trend…..On average down 3 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds up to 10 mph shifting to the southeast in the afternoon.
* Upper slopes….West winds 10 to 15 mph with gusts to around 40 mph.
* 10000 ft msl….West 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….26-31. * 7000 feet…….11-16. * 24 hr trend…..On average up 5 degrees.
* Max humidity: * Valley floor….57-62 percent. * 7000 feet…45-50 percent. * 24 hr trend….On average down 6 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northeast winds up to 10 mph.
* Upper slopes….Windy. West winds 20 to 30 mph. Gusts up to 50 mph increasing to 65 mph after midnight.
* 10000 ft msl….West 15 to 20 mph increasing to 20 to 30 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TUESDAY… * Sky/Weather………Sunny. Scattered flurries in the morning.
* Max temperature: * Valley floor….52-57. * 7000 feet…….44-49. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * Valley floor….18-28 percent. * 7000 feet…….24-34 percent. * 24 hr trend…..On average down 3 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds 10 to 15 mph.
* Upper slopes….Windy. West winds 25 to 35 mph with gusts to around 65 mph decreasing to 15 to 25 mph with gusts to around 55 mph in the afternoon.
* 10000 ft msl….West 25 to 35 mph decreasing to 15 to 20 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

KERN CO. DESERTS (CAZ299):
WIND ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY
.MONDAY… Sky/weather………Sunny.
Max Temperature…..50-55. 24 HR Trend……Little change.
Min Humidity……..44-54 percent. 24 HR Trend……Little change.
20-Foot Winds…….West 3-14 mph.
LAL……………..1.
Ventilation………Fair. Mixing height…….2500 ft AGL. Transport Winds…..West around 10 mph.
Chc Wetting Rain….0 percent.

.MONDAY NIGHT… Sky/weather………Clear.
Min Temperature…..29-34. 24 HR Trend……Little change.
Max Humidity……..64-74 percent. 24 HR Trend……Little change.
20-Foot Winds…….West 3-10 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.TUESDAY… Sky/weather………Sunny.
Max Temperature…..51-56. 24 HR Trend……Little change.
Min Humidity……..40-50 percent. 24 HR Trend……Down 1-3 percent.
20-Foot Winds…….West 5-12 mph.
LAL……………..1.
Ventilation………Good. Mixing height…….2300 ft AGL. Transport Winds…..West 15 to 20 mph.
Chc Wetting Rain….0 percent.

INLAND EMPIRE (CAZ248):
TODAY… Sky/weather………Mostly cloudy…becoming sunny.
Max temperature…..58 to 63. 24 HR TREND……Little change.
Min humidity……..40 to 50 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear. Patchy fog after midnight.
Min temperature…..35 to 43. 24 HR TREND……Down 2 degrees.
Max humidity……..80 to 90 percent. 24 HR TREND……Down 10 percent.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY… Sky/weather………Mostly sunny.
Max temperature…..59 to 65. 24 HR TREND……Up 2 degrees.
Min humidity……..35 to 45 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 1 to 3 mph. CWR (>0.10 IN)……0 percent. LAL……………..1.

*DEVORE:
Monday
Sunny, with a high near 59. Northeast wind around 5 mph becoming calm.
Monday Night
Mostly clear, with a low around 44. Northwest wind around 5 mph becoming north in the evening.
Tuesday
Sunny, with a high near 61. North wind around 5 mph becoming south in the afternoon.
Tuesday Night
Mostly clear, with a low around 45. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 25 mph.

*CHINO HILLS:
Monday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 60. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Monday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 41. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 61. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 42. Southwest wind around 5 mph becoming calm

*COLTON:
Monday
Patchy fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 62. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 43. Calm wind.
Tuesday
Sunny, with a high near 64. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 43. Calm wind.

SAN BERNARDINO N.F. (CAZ255):
TODAY… Sky/weather………Sunny.
Max temperature…..42 to 52 above 6000 feet to 47 to 55 below 6000 feet. 24 HR TREND……Down 1 degree.
Min humidity…20 to 30 percent on desert slopes to 30 to 40 percent on coastal slopes. 24 HR TREND..Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 14 mph. Gusts to 30 mph in the morning.
RIDGETOP………Winds northwest 13 to 23 mph with gusts to 45 mph becoming west 6 to 11 mph with gusts to 20 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..24 to 34 above 6000 feet to 32 to 40 below 6000 feet. 24 HR TREND……Up 2 degrees.
Max humidity….40 to 50 percent on desert slopes to 60 to 70 percent on coastal slopes. 24 HR TREND……Little change.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 9 mph. Gusts to 20 mph after midnight.
RIDGETOP………Winds west 6 to 13 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY… Sky/weather………Mostly sunny.
Max temperature…..43 to 53 above 6000 feet to 47 to 57 below 6000 feet. 24 HR TREND……Up 2 degrees.
Min humidity….20 to 30 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 9 mph with gusts to 20 mph.
RIDGETOP………Winds west 8 to 13 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*LAKE ARROWHEAD SCHOOL- AREA:
Monday
Sunny, with a high near 47. East wind around 5 mph becoming west in the afternoon.
Monday Night
Mostly clear, with a low around 35. South wind 5 to 10 mph.
Tuesday
Sunny, with a high near 49. South wind around 5 mph becoming west in the afternoon.
Tuesday Night
Mostly clear, with a low around 33. Northeast wind around 5 mph.

*BIG BEAR SCHOOL AREA:
Monday
Sunny, with a high near 49. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 26. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 49. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 25. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

BANNING PASS (CAZ265):
.TODAY… Sky/weather………Sunny.
Max temperature…..42 to 52 above 6000 feet to 47 to 55 below 6000 feet. 24 HR TREND……Down 1 degree.
Min humidity…20 to 30 percent on desert slopes to 30 to 40 percent on coastal slopes. 24 HR TREND..Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 14 mph. Gusts to 30 mph in the morning.
RIDGETOP………Winds northwest 13 to 23 mph with gusts to 45 mph becoming west 6 to 11 mph with gusts to 20 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..24 to 34 above 6000 feet to 32 to 40 below 6000 feet. 24 HR TREND……Up 2 degrees.
Max humidity….40 to 50 percent on desert slopes to 60 to 70 percent on coastal slopes. 24 HR TREND…Little change.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 9 mph. Gusts to 20 mph after midnight.
RIDGETOP………Winds west 6 to 13 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY… Sky/weather………Mostly sunny.
Max temperature…..43 to 53 above 6000 feet to 47 to 57 below 6000 feet. 24 HR TREND……Up 2 degrees.
Min humidity….20 to 30 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 9 mph with gusts to 20 mph.
RIDGETOP………Winds west 8 to 13 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ230):
.TODAY… * Sky/weather…………………Sunny.
* Max Temperature……………..60-68. * 24 hr trend………………Little change.
* Min Humidity………………..25-36 pct. * 24 hr trend………………3 pct wetter.
* Winds – 20 foot…Slope/Valley..Northeast 5 to 15 mph.
* Winds…10000 FT MSL…………West 20 to 30 mph.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.
* Haines High Level Index………5 moderate potential for large plume dominated fire growth.

.TONIGHT… * Sky/weather…………………Mostly clear.
* Min Temperature……………..40-47. * 24 hr trend………………Little change.
* Max Humidity………………..47-76 pct. * 24 hr trend………………4 pct drier.
* Winds – 20 foot…Slope/Valley..North 5 to 15 mph.
* Winds…10000 FT MSL…………West 20 to 30 mph.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.

.TUESDAY… * Sky/weather…………………Mostly sunny.
* Max Temperature……………..62-70. * 24 hr trend………………Little change.
* Min Humidity………………..25-36 pct. * 24 hr trend………………Little change.
* Winds – 20 foot…Slope/Valley..Northeast 5 to 10 mph in the morning becoming southeast in the afternoon.
* Winds…10000 FT MSL…………West 20 to 30 mph.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.
* Haines High Level Index………5 moderate potential for large plume dominated fire growth.

NEEDLES, RIVER BAT. (CAZ229):
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….60-65. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….24-34 percent. * 24 hr trend…..On average up 2 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….West 20 to 30 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.
* Mixing height…….3300 ft agl. * Transport winds…..Light winds. * Ventilation………Marginal.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….36-41. * 24 hr trend…..Little change.
* Max humidity: * Valley floor….61-66 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Downslope/downvalley 2 to 5 mph becoming southeast up to 10 mph after midnight.
* 10000 ft msl….West 25 to 35 mph increasing to 30 to 40 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TUESDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….62-67. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * Valley floor….23-33 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….South wind 10 to 15 mph with gusts to around 25 mph.
* 10000 ft msl….West 35 to 45 mph decreasing to 30 to 40 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.
* Mixing height…….3500 ft agl.
* Transport winds…..Light winds becoming south around 10 knots in the afternoon. * Ventilation………Good.

STATELINE – CLARK COUNTY BORDER (NVZ465):
.TODAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….52-57. * 24 hr trend…..Little change.
* Min humidity: * 4000 feet…….26-35 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.
* 10000 ft msl….West 20 to 30 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.
* Mixing height…….2600 ft agl. * Transport winds…..Light winds. * Ventilation………Marginal.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * 4000 feet…….28-33. * 24 hr trend…..Little change.
* Max humidity: * 4000 feet…….68-73 percent. * 24 hr trend…..On average up 2 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Downslope/downvalley 2 to 5 mph becoming southeast up to 10 mph after midnight.
* 10000 ft msl….West 20 to 30 mph increasing to 35 to 45 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.

.TUESDAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….55-60. * 24 hr trend…..On average up 3 degrees.
* Min humidity: * 4000 feet…….26-36 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Southeast winds around 10 mph shifting to the northwest up to 10 mph in the afternoon. Gusts up to 30 mph.
* 10000 ft msl….West 35 to 45 mph decreasing to 20 to 30 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..5.
* Mixing height…….2300 ft agl.
* Transport winds…..Southwest around 10 knots shifting to the north in the afternoon. * Ventilation………Marginal.

*La Jolla CA
Monday
Mostly sunny, with a high near 59. Southeast wind around 5 mph becoming west in the afternoon.
Monday Night
Partly cloudy, with a low around 48. North wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 59. Southeast wind around 5 mph becoming west in the afternoon.
Tuesday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 47. Calm wind.

*Poway CA
Monday
Patchy fog before 10am. Otherwise, sunny, with a high near 65. Southeast wind around 5 mph becoming west in the afternoon.
Monday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 44. Calm wind becoming east around 5 mph after midnight.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 65. Southeast wind around 5 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 43. Calm wind becoming east around 5 mph

*CEDAR CITY Ut.
.DAYS TWO THROUGH SEVEN…Monday through Saturday

Several more storm systems will impact the state through much of the week. Mountain snowfall totals will be significant over the course of the week, with brief periods of snow that could create impacts for the valleys at times, including the Monday morning commute.

Monday
A 20 percent chance of snow before 11am. Mostly sunny, with a high near 42. West southwest wind around 9 mph.
Monday Night
Mostly clear, with a low around 26. South southwest wind around 10 mph.
Tuesday
A 20 percent chance of snow after 11am. Mostly sunny, with a high near 45. Southwest wind 10 to 14 mph.
Tuesday Night
Mostly clear, with a low around 25. South wind 6 to 11 mph.

*************************** L.A COUNTY ********************************
LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ548):
Monday
Sunny, with a high near 63. North wind around 5 mph becoming southwest in the afternoon.
Monday Night
Mostly clear, with a low around 45. South southwest wind around 5 mph becoming northwest in the evening.
Tuesday
Sunny, with a high near 64. North wind around 5 mph becoming southwest in the morning.
Tuesday Night
Mostly clear, with a low around 45.

ANGELES NATIONAL FOREST (CAZ254):
Monday
Sunny, with a high near 52. West northwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 38. West northwest wind around 10 mph.
Tuesday
Sunny, with a high near 53. West northwest wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 41.

ANTELOPE VALLEY (CAZ259):
Monday
Sunny, with a high near 56. Wind chill values as low as 15 early. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Clear, with a low around 30. Wind chill values as low as 20. West southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 55. Breezy, with a west northwest wind around 20 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 31.

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THIS DAY IN WEATHER HISTORY:
2013: A cold and dry air mass produced a significant freeze in all areas away from the coast on 1/12 and on this day. Low temperatures dropped to the 30s near the coast, 20s inland and in the low deserts, and the low teens in the high desert, which caused some water pipe damage. A frigid -8 degrees was recorded at Big Bear City – Shay Meadows.

2009: The minimum temperature at Santa Ana of 73° not only set a record high minimum temperature for the date and month, but also for the entire winter season. Incredibly, the minimum is tied for the 23rd highest minimum temperature on record (and this was in January!). Persistent Santa Ana winds and strong high pressure were the causes.

2007: A trace of snow was reported in Rancho Bernardo, Escondido, Chula Vista, El Cajon and La Mesa. A cold snap settled over Southern California. Some remarkable records were set, particularly on this day and on 1/14. -7° at Fawnskin, -2° at Big Bear City and Wrightwood, 5° at Hesperia and Mt. Laguna, 10° at Borrego Airport, 12° at Campo, 16° at Ramona, 18° at Thermal, 19° in Hemet, 20° at Camp Pendleton. $114.7 million in crop damage in San Diego Co. $86 million in Riverside Co. $11.1 in San Bernardino Co. $600 thousand damage from broken pipes in San Bernardino Co. All three counties were declared disaster areas.

1997: A storm that started on 1/12 and ended on this day gave the coastal areas and valleys one to three inches of rainfall. Snow continued in the mountains and as of 1/15, 18 inches of snow had fallen at Mt. Laguna. Generally 18 inches to three feet of snow were reported above 2500 feet, but up to four feet accumulated in the San Gorgonio Wilderness Area. The ski resort at Snow Valley remained open until 5/18, the latest in its 78 year history. Dime size hail up to one foot deep covered a small area in Buena Park and Cypress. 13 illegal immigrants died from exposure near Pine Valley.

1993: A very wet series of storms that began on 1/6 and ended on 1/19 produced 20 to 50 inches of precipitation in the mountains and up to 12 inches at lower elevations over a two week period. This day marked the start of seven consecutive days (the most on record) of measurable precipitation in Victorville, which ended on 1/19. This also occurred on 2/18-2/24/2005, 2/14-2/20/1980, and 12/22-12/28/1971. Measurable rain fell nearly every day from 1/2 to 1/19 in San Diego County. Flooding and flash flooding, mud slides, etc., resulted.

1984: A tornado in Huntington Beach damaged a mobile home.

1963: The Western US chilled out more than usual when a massive arctic air mass descended on the region. The cold dry air mass filtered through the mountains into Southern California, helping Alpine (19°) and Vista (21°) set all-time record low temperatures.

1952: A series of storms brought heavy rain and mountain snow to the region starting this day and ending on 1/18. 5.52 inches fell in San Bernardino over the six days. Flooding was reported in Upland and Ontario. Heavy snow hit the San Bernardino Mountains with 40 inches in Lake Arrowhead (with a snow depth of 46 inches), and 37 inches in Big Bear Lake. All mountain roads were blocked and closed because of snow slides.

1949: 43 inches of snow fell at Palomar Mountain from 1/10 to this day, the greatest storm snowfall on record. On this day 20 inches fell, the greatest daily snowfall on record for January and the third greatest daily snowfall on record.

1882: A cold winter storm that started on 1/12 and ended on 1/14 brought lots of snow to the lowlands. 15 inches of snow fell at San Bernardino. 3 feet of snow fell in Campo over four days. Two to five inches fell in outlying San Diego, including four inches along Poway Grade, three inches at El Cajon and one inch in Poway. Light snow fell in Del Mar. Snowflakes fell, but did not stick at San Diego Lindbergh Field. Birds and livestock were killed and telegraph lines were knocked down.
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TROPICAL EAST PACIFIC REPORT:

Routine issuance of the Tropical Weather Outlook will resume on May 15, 2020. During the off-season, Special Tropical Weather Outlooks will be issued as conditions warrant.

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CURRENT WEATHER @ HESP. @ 0730 Hrs. TEMP: 300 RH: 90% WIND: CALM
3.21” RF @ HESP. STA.SINCE OCT. 1st/20 Yr Avg: 7.12” : MONTH: 0.00” YTD S/F: 4.50” /
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FIRES: UPDATED

National Preparedness Level (PL 1 )

CDF FIRES TO DATE (STATE LANDS SRA)
Number of Fires and Acres:
Interval Fires Acres
January 1, 2020 through January 5, 2020 18 19
January 1, 2019 through January 5, 2020 23 36
5-Year Average (same interval) 24 5
2019 Combined YTD (CALFIRE & US Forest Service) 23 21

2019 Incident Archive
A summary of all 2019 incidents, including those managed by Cal Fire and other partner agencies.
259,823 Acres Estimated Acres Burned 7,860 Incidents Number of Incidents
3 Fatalities Confirmed Loss of Life 732 Structures Structures Damaged or Destroyed

Southern California Area (PL 1 )
No Reportable Incidents

Northern California Area (PL 1 )
No Reportable Incidents

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