WEATHER 1/9/20

DAILY FIRE WEATHER & FIRE INFO
ALL UNITS From:

EMAIL: pdupree@bdcecs.org
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Date: 1/9/20

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.: 13

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
==============================================================================
SYNOP: (NWS SAN DIEGO)
A low pressure system will continue to move across Southern California today. This will bring cool temperatures, strong gusty west to northwest winds in the mountains and deserts, and a chance of showers from the coast into the mountains with the greatest chances for wetting rainfall in the mountains and
adjacent inland valleys in San Diego County. Friday will be dry and a little warmer. The next low pressure system will bring another round of gusty winds in the mountains and deserts for Saturday with another round of gusty winds and small chances for precipitation around Tuesday.

Scattered showers will move across Central California this morning and then across Southern California this afternoon.

· Showers will end across the region by sunset.

· Most locations will receive less than a quarter inch of rainfall today, but the Central Sierra, Big Sur Coast, and the Cleveland National Forest will receive up to a half inch of rainfall.

· The snow level will be between 4,000 and 5,000 feet.

· Temperatures will be a little below normal through the middle of next week, with upper 30s and 40s across the mountains and mid 50s to mid 60s in the valleys.

· Periods of westerly winds of 20 to 30 mph with gusts to 50 mph will surface across the wind prone mountain and desert areas through the middle of next week.

· There will be northerly nighttime winds of 20 to 30 mph with gusts to 50 mph across Santa Barbara County and the Grapevine through Sunday.

· Widespread shower activity now looks possible across the area Tuesday and Wednesday of next week.

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
Weak system will move across the region today bringing a slight chance of mountain showers and slightly cooler temperatures. A cold front will move through the region this afternoon bringing gusty northwest to north winds across Inyo, Esmeralda, and Nye Counties. Winds across the remain of the area are not expected to be significant. This system will exit the region tonight, with the next system impacting the region over the weekend. This system is also expected to remain mainly dry with
just a few showers possible across Lincoln and northern Mohave Counties.

DAILY FUELS/FIRE POTENTIAL:
There will be little or no fire activity across the region through the forecast period.

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

———————————————————————————-
APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):
.TODAY… Sky/weather………Partly cloudy. Areas of blowing sand and blowing dust in the afternoon. Chance of showers in the afternoon.
Max temperature…..49 to 54. 24 HR TREND……Down 5 degrees.
Min humidity……..40 to 50 percent. 24 HR TREND……Up 20 percent.
WIND (20 FT)……..Winds west 15 to 25 mph with gusts to 50 mph.
CWR (>0.10 IN)……15 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..28 to 34. 24 HR TREND……Down 5 degrees.
Max humidity……..75 to 85 percent. 24 HR TREND……Up 15 percent.
WIND (20 FT)……..Winds west 6 to 16 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..51 to 56. 24 HR TREND……Up 3 degrees.
Min humidity……..25 to 30 percent. 24 HR TREND……Down 20 percent.
WIND (20 FT)……..Winds northeast 6 to 9 mph. Gusts to 20 mph in the morning.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*WRIGHTWOOD:
Thursday
A chance of snow showers after 10am. Sunny, with a high near 41. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday Night
Mostly clear, with a low around 27. North wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 45. North wind around 5 mph becoming calm.
Friday Night
Mostly clear, with a low around 30. West wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 35 mph.

*BIG PINES / WEST WRIGHTWOOD AREA
…WIND ADVISORY IN EFFECT UNTIL 3 AM PST FRIDAY…
Thursday
A 20 percent chance of snow after 10am. Mostly cloudy, then gradually becoming sunny, with a high near 41. Wind chill values as low as 20. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 31. Wind chill values as low as 20. Blustery, with a north wind 20 to 25 mph, with gusts as high as 35 mph.
Friday
Sunny, with a high near 48. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 36.

*PHELAN:
Thursday
A slight chance of showers after 10am. Sunny, with a high near 45. Breezy, with a west wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 20%.
Thursday Night
Clear, with a low around 32. West wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 49. Calm wind becoming northeast around 5 mph in the morning.
Friday Night
Clear, with a low around 35. South wind 5 to 15 mph, with gusts as high as 20 mph.

TRONA (INDIAN WELLS) (CAZ298):
THURSDAY… Sky/weather………Sunny.
Max Temperature…..47-52. 24 HR Trend……Down 3-5 degrees.
Min Humidity……..39-49 percent. 24 HR Trend……Up 18-22 percent.
20-Foot Winds…….Southwest 8-16 mph in the morning shifting to northwest by afternoon.
LAL……………..1. Ventilation………Fair.
Mixing height…….3700 ft AGL. Transport Winds…..Northwest around 5 mph.
Chc Wetting Rain….0 percent.

THURSDAY NIGHT… Sky/weather………Clear.
Min Temperature…..28-33. 24 HR Trend……Down 1-3 degrees.
Max Humidity……..67-77 percent. 24 HR Trend……Down 2-4 percent.
20-Foot Winds…….Northwest 8-16 mph in the evening decreasing to 4-8 mph overnight.
LAL……………..1. Chc Wetting Rain….0 percent.

FRIDAY… Sky/weather………Sunny.
Max Temperature…..49-54. 24 HR Trend……Up 1-3 degrees.
Min Humidity……..28-38 percent. 24 HR Trend……Down 9-13 percent.
20-Foot Winds…….Northwest 4-8 mph in the morning shifting to east by afternoon.
LAL……………..1. Ventilation………Marginal.
Mixing height…….2400 ft AGL. Transport Winds…..North around 5 mph in the morning shifting to east in the afternoon.
Chc Wetting Rain….0 percent.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
.TODAY… * Sky/Weather………Mostly sunny.

* Max temperature: * Valley floor….57-62. * 24 hr trend…..On average down 4 degrees.
* Min humidity: * Valley floor….28-38 percent. * 24 hr trend…..On average up 11 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….West wind 10 to 15 mph with gusts to around 30 mph.
* 10000 ft msl….West 30 to 40 mph becoming northwest 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….30-35. * 24 hr trend…..On average down 2 degrees.
* Max humidity: * Valley floor….58-63 percent. * 24 hr trend…..On average down 7 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Northwest wind 10 to 15 mph.
* 10000 ft msl….North 30 to 40 mph increasing to 35 to 45 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

.FRIDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….56-61. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….16-24 percent. * 24 hr trend…..On average down 13 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….North wind 10 to 15 mph.
* 10000 ft msl….North 35 to 45 mph decreasing to 30 to 40 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

*BAKER:
Thursday
Sunny, with a high near 57. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.
Thursday Night
Clear, with a low around 31. North wind 5 to 7 mph.
Friday
Sunny, with a high near 58. North wind 5 to 7 mph.
Friday Night
Clear, with a low around 31. Light and variable wind.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS (CAZ226):
TODAY… * Sky/Weather………Partly cloudy then becoming mostly sunny. Scattered snow in the morning, then isolated snow in the afternoon.
* Max temperature: * Valley floor….48-53. * 7000 feet….36-41. * 24 hr trend…On average down 4 degrees.
* Min humidity: * Valley floor….30-40 percent. * 7000 feet….40-50 percent. * 24 hr trend….On average up 20 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds 10 to 15 mph. Gusts up to 30 mph in the afternoon.
* Upper slopes….West winds 10 to 15 mph shifting to the north in the afternoon. Gusts up to 35 mph.
* 10000 ft msl….West 10 to 15 mph increasing to north 15 to 20 mph in the afternoon.
* CWR (>= 0.10 in)….10 percent. * LAL……………..1. * Haines Index……..4.

.TONIGHT… * Sky/Weather………Partly cloudy then becoming clear.
* Min temperature: * Valley floor….24-29. * 7000 feet…….3-8. * 24 hr trend…On average down 3 degrees.
* Max humidity: * Valley floor….54-59 percent. * 7000 feet…64-69 percent. * 24 hr trend…On average down 2 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds 10 to 15 mph.
* Upper slopes….Northwest winds 10 to 15 mph with gusts to around 35 mph.
* 10000 ft msl….North 20 to 30 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

.FRIDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….50-55. * 7000 feet…….40-45. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….23-32 percent. * 7000 feet…..28-38 percent. * 24 hr trend…On average down 10 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds around 10 mph shifting to the southeast in the afternoon.
* Upper slopes….Northwest winds 10 to 15 mph with gusts to around 25 mph.
* 10000 ft msl….Northwest 15 to 25 mph decreasing to 10 to 15 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

KERN CO. DESERTS (CAZ299):
THURSDAY… Sky/weather………Sunny.
Max Temperature…..46-51. 24 HR Trend……Down 2-4 degrees.
Min Humidity……..56-66 percent. 24 HR Trend……Up 12-16 percent.
20-Foot Winds…….West 10-20 mph.
LAL……………..1. Ventilation………Good.
Mixing height…….4000 ft AGL. Transport Winds…..Northwest around 15 mph.
Chc Wetting Rain….0 percent.

THURSDAY NIGHT… Sky/weather………Mostly clear.
Min Temperature…..28-33. 24 HR Trend……Down 2-4 degrees.
Max Humidity……..73-83 percent. 24 HR Trend……Up 1-3 percent.
20-Foot Winds…….West 10-20 mph in the evening shifting to northwest 4-8 mph overnight.
LAL……………..1. Chc Wetting Rain….0 percent.

FRIDAY… Sky/weather………Sunny.
Max Temperature…..49-54. 24 HR Trend……Up 2-4 degrees.
Min Humidity……..36-46 percent. 24 HR Trend……Down 15-19 percent.
20-Foot Winds…….Northeast 4-8 mph.
LAL……………..1. Ventilation………Fair.
Mixing height…….2700 ft AGL. Transport Winds…..Northeast around 5 mph.
Chc Wetting Rain….0 percent.

INLAND EMPIRE (CAZ248):
.TODAY… Sky/weather………Mostly cloudy. Slight chance of showers in the morning, then showers likely in the afternoon.
Max temperature…..50 to 59. 24 HR TREND……Down 7 degrees.
Min humidity……..50 to 60 percent. 24 HR TREND……Up 15 percent.
WIND (20 FT)……..Winds south 6 to 8 mph becoming west 6 to 11 mph with gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……44 percent. LAL……………..1.

.TONIGHT… Sky/weather………Partly cloudy. Slight chance of showers in the evening.
Min temperature…..34 to 42. 24 HR TREND……Down 5 degrees.
Max humidity……..75 to 85 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds southeast 6 to 9 mph. Gusts to 20 mph in the evening.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..59 to 66. 24 HR TREND……Up 8 degrees.
Min humidity……..25 to 30 percent. 24 HR TREND……Down 30 percent.
WIND (20 FT)……..Winds north 6 to 8 mph. Gusts to 20 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*DEVORE:
Thursday
A chance of showers after 10am. Mostly cloudy, then gradually becoming sunny, with a high near 57. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly clear, with a low around 43. North wind 5 to 15 mph becoming northeast after midnight. Winds could gust as high as 25 mph.
Friday
Sunny, with a high near 62. North wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Clear, with a low around 45. North wind around 5 mph becoming calm.

*CHINO HILLS:
Thursday
A slight chance of showers after 10am. Partly sunny, then gradually becoming sunny, with a high near 59. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Thursday Night
Clear, with a low around 40. South wind around 5 mph becoming calm.
Friday
Sunny, with a high near 64. East wind around 5 mph becoming west in the afternoon.
Friday Night
Clear, with a low around 42. West wind around 5 mph becoming calm in the evening.

*COLTON:
Thursday
A slight chance of showers after 10am. Patchy fog before 7am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light and variable wind becoming west 5 to 10 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 41. North wind 5 to 10 mph.
Friday
Sunny, with a high near 66. Calm wind becoming north around 5 mph.
Friday Night
Clear, with a low around 42. Southwest wind around 5 mph becoming calm in the evening.

SAN BERNARDINO N.F. (CAZ255):
.TODAY… Sky/weather………Mostly cloudy. Slight chance of showers in the morning, then showers likely in the afternoon.
Max temperature…..50 to 59. 24 HR TREND……Down 7 degrees.
Min humidity……..50 to 60 percent. 24 HR TREND……Up 15 percent.
WIND (20 FT)……..Winds south 6 to 8 mph becoming west 6 to 11 mph with gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……44 percent. LAL……………..1.

.TONIGHT… Sky/weather………Partly cloudy. Slight chance of showers in the evening.
Min temperature…..34 to 42. 24 HR TREND……Down 5 degrees.
Max humidity……..75 to 85 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds southeast 6 to 9 mph. Gusts to 20 mph in the evening.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..59 to 66. 24 HR TREND……Up 8 degrees.
Min humidity……..25 to 30 percent. 24 HR TREND……Down 30 percent.
WIND (20 FT)……..Winds north 6 to 8 mph. Gusts to 20 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*LAKE ARROWHEAD SCHOOL- AREA:
Thursday
A chance of rain and snow showers after 10am. Mostly sunny, with a high near 39. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Thursday Night
Mostly clear, with a low around 28. Northeast wind around 15 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 45. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Clear, with a low around 32. South wind 5 to 15 mph, with gusts as high as 20 mph.

*BIG BEAR SCHOOL AREA:
Thursday
A chance of snow showers after 10am. Mostly sunny, with a high near 39. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
Mostly clear, with a low around 18. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Sunny, with a high near 44. Northeast wind 5 to 10 mph.
Friday Night
Clear, with a low around 23. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.

BANNING PASS (CAZ265):
.TODAY… Sky/weather………Mostly sunny. Areas of blowing sand and blowing dust in the afternoon. Slight chance of showers in the afternoon.
Max temperature…..61 to 66. 24 HR TREND……Down 7 degrees.
Min humidity……..35 to 45 percent. 24 HR TREND……Up 20 percent.
WIND (20 FT)……..Winds west 14 to 24 mph with gusts to 45 mph.
CWR (>0.10 IN)……12 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..40 to 47. 24 HR TREND……Down 3 degrees.
Max humidity……..50 to 60 percent. 24 HR TREND……Down 10 percent.
WIND (20 FT)……..Winds northwest 11 to 21 mph. Gusts to 40 mph…becoming 25 mph after midnight.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..64 to 69. 24 HR TREND……Up 4 degrees.
Min humidity……..15 to 20 percent. 24 HR TREND……Down 20 percent.
WIND (20 FT)……..Winds north 6 to 10 mph with gusts to 20 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ230):
TODAY… * Sky/weather…………………Mostly sunny. Slight chance of rain in the morning becoming chance of rain in the afternoon.
* Max Temperature……………..46-59. * 24 hr trend………………6 degrees cooler.
* Min Humidity………………..37-57 pct. * 24 hr trend………………26 pct wetter.
* Winds – 20 foot…Slope/Valley..West 5 to 10 mph in the morning becoming northwest 10 to 20 mph in the afternoon.
* Winds…10000 FT MSL…………Northwest 30 to 40 mph.
* Chance of Precip…………….30 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.
* Haines High Level Index………4 low potential for large plume dominated fire growth.

.TONIGHT… * Sky/weather…………………Mostly clear.
* Min Temperature……………..34-42. * 24 hr trend………………Little change.
* Max Humidity………………..52-67 pct. * 24 hr trend………………15 pct drier.
* Winds – 20 foot…Slope/Valley..Northwest 15 to 25 mph.
* Winds…10000 FT MSL…………North 35 to 45 mph.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.

.FRIDAY… * Sky/weather…………………Sunny.
* Max Temperature……………..48-60. * 24 hr trend………………Little change.
* Min Humidity………………..19-25 pct. * 24 hr trend………………25 pct drier.
* Winds – 20 foot…Slope/Valley..North 15 to 25 mph.
* Winds…10000 FT MSL…………North 40 to 50 mph in the morning becoming 25 to 35 mph in the afternoon.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.
* Haines High Level Index………4 low potential for large plume dominated fire growth.

NEEDLES, RIVER BAT. (CAZ229):
.TODAY… * Sky/Weather………Mostly cloudy this morning, partly cloudy this afternoon.
* Max temperature: * Valley floor….58-63. * 24 hr trend…..On average down 6 degrees.
* Min humidity: * Valley floor….24-34 percent. * 24 hr trend…..On average up 6 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph becoming west up to 10 mph in the afternoon.
* 10000 ft msl….South 10 to 15 mph increasing to northwest 15 to 25 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..3.
* Mixing height…….7200 ft agl. * Transport winds…..Light winds. * Ventilation………Good.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….34-39. * 24 hr trend…..On average down 2 degrees.
* Max humidity: * Valley floor….54-59 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Northwest wind up to 10 mph.
* 10000 ft msl….North 25 to 35 mph increasing to 30 to 40 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

.FRIDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….56-61. * 24 hr trend…..On average down 2 degrees.
* Min humidity: * Valley floor….18-28 percent. * 24 hr trend…..On average down 6 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….North wind 10 to 15 mph.
* 10000 ft msl….North 45 to 55 mph decreasing to 30 to 40 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.
* Mixing height…….3800 ft agl. * Transport winds…..North 10 to 20 knots. * Ventilation………Good.

STATELINE – CLARK COUNTY BORDER (NVZ465):
TODAY… * Sky/Weather………Mostly cloudy this morning, partly cloudy this afternoon.
* Max temperature: * 4000 feet…….53-58. * 24 hr trend…..On average down 4 degrees.
* Min humidity: * 4000 feet…….25-35 percent. * 24 hr trend…..On average up 7 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming north up to 10 mph in the afternoon.
* 10000 ft msl….Southwest up to 10 mph increasing to north in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..3.
* Mixing height…….4200 ft agl. * Transport winds…..Light winds. * Ventilation………Marginal.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * 4000 feet…….29-34. * 24 hr trend…..Little change.
* Max humidity: * 4000 feet…….56-61 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds 10 to 15 mph.
* 10000 ft msl….North 20 to 30 mph increasing to 30 to 40 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

.FRIDAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….50-55. * 24 hr trend…..On average down 3 degrees.
* Min humidity: * 4000 feet…….19-28 percent. * 24 hr trend…..On average down 6 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….North winds 10 to 15 mph.
* 10000 ft msl….North 35 to 45 mph decreasing to 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.
* Mixing height…….3700 ft agl. * Transport winds…..North around 10 knots. * Ventilation………Fair.

*La Jolla CA
Thursday
A chance of showers, mainly between 10am and 4pm. Partly sunny, with a high near 58. West wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A slight chance of showers before 10pm. Mostly clear, with a low around 46. Northwest wind 10 to 15 mph becoming light and variable. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 61. Southeast wind 5 to 10 mph becoming west in the afternoon.
Friday Night
Mostly clear, with a low around 48. North wind around 5 mph becoming calm.

*Poway CA
Thursday
A chance of showers after 10am. Partly sunny, with a high near 61. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers before 10pm. Mostly clear, with a low around 41. Light and variable wind becoming east 5 to 10 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Sunny, with a high near 67. East wind around 5 mph becoming calm.
Friday Night
Clear, with a low around 43. Calm wind becoming east around 5 mph in the evening.

*CEDAR CITY Ut.
.DAYS TWO THROUGH SEVEN…Thursday through Tuesday

More accumulating mountain snow is expected Thursday night. Northern Utah valleys may see some light snow accumulations Thursday night, with lake enhanced snow possible for the Salt Lake and Tooele Valleys, which could lingering into Friday morning.

Several winter storm systems are expected to bring periods of accumulating snow across the region this weekend through early next week. Snow accumulations will eventually add up to significant amounts, mainly over the northern Utah mountains.

Thursday
A 30 percent chance of snow showers after 11am. Mostly cloudy, with a high near 38. Calm wind becoming west northwest around 5 mph in the afternoon. New snow accumulation of less than a half inch possible.
Thursday Night
A 20 percent chance of snow showers. Partly cloudy, with a low around 18. Light and variable wind becoming north 5 to 7 mph after midnight.
Friday
Mostly sunny, with a high near 32. North northeast wind 8 to 10 mph.
Friday Night
Mostly clear, with a low around 18. Light and variable wind becoming south around 5 mph after midnight.

*************************** L.A COUNTY ********************************
…GUSTY NORTHWEST TO NORTH WINDS THROUGH THURSDAY NIGHT…
…CHANCE OF LIGHT SHOWERS ON THURSDAY…
LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ548):
THURSDAY… Sky/weather………Mostly cloudy then becoming partly cloudy. Slight chance of rain in the afternoon.
Max temperature…..58-64. 24 hr trend……Down 3.
Min humidity……..40-55 percent. 24 hr trend……Little change.
20-foot winds…….Variable 3-6 mph becoming southwest 6-12 mph in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……10 percent.

THURSDAY NIGHT… Sky/weather………Mostly clear.
Min temperature…..39-45.
Max humidity……..65-85 percent.
20-foot winds…….Southwest 6-12 mph in the evening, becoming variable 3-6 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..62-67.
Min humidity……..30-45 percent.
20-foot winds…….Variable 3-6 mph becoming southwest 6-12 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANGELES NATIONAL FOREST (CAZ254):
…WIND ADVISORY IN EFFECT UNTIL 3 AM PST FRIDAY…
THURSDAY… Sky/weather………Partly cloudy then becoming mostly cloudy. Slight chance of rain and snow in the afternoon.
Max temperature…..47-57 low elevations to 35-47 higher elevations. 24 hr trend……Down 3-5.
Min humidity……..50-65 percent except 35-50 percent higher peaks and warmer valleys. 24 hr trend……Up 14.
20-foot winds……. Valleys/lwr slopes…Northwest to north 20-30 mph with gusts to 45 mph. Strongest through the I-5 Corridor.
Ridges/upr slopes….Northwest to north 20-30 mph with gusts to 55 mph.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……10 percent.

THURSDAY NIGHT… Sky/weather………Partly cloudy then becoming mostly clear. Slight chance of rain and snow showers in the evening.
Min temperature…..33-43 low elevations to 23-33 colder valleys and peaks.
Max humidity……..55-75 percent except 75-95 percent colder valleys.
20-foot winds……. Valleys/lwr slopes…Northwest to north 20-30 mph with gusts to 45 mph. Strongest through the I-5 Corridor.
Ridges/upr slopes….Northwest to north 20-30 mph with gusts to 55 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..54-62 low elevations to 44-54 higher elevations.
Min humidity……..25-40 percent.
20-foot winds……. Valleys/lwr slopes…Northwest to north 10-20 mph with gusts to 25 mph.
Ridges/upr slopes….North 15-25 mph with gusts to 35 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANTELOPE VALLEY (CAZ259):
WIND ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM PST THIS EVENING
THURSDAY… Sky/weather………Mostly sunny then becoming partly cloudy.
Max temperature…..42-52. 24 hr trend……Down 3.
Min humidity……..40-60 percent. 24 hr trend……Up 10-15.
20-foot winds…….West to northwest 15-25 mph with local gusts to 40 mph. Strongest west valley.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

THURSDAY NIGHT… Sky/weather………Mostly clear.
Min temperature…..28-33.
Max humidity……..75-95 percent.
20-foot winds…….West to northwest 15-25 mph with gusts to 40 mph in the evening, decreasing to 8-15 mph with gusts to 25 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..48-55.
Min humidity……..30-45 percent.
20-foot winds…….Northwest 6-12 mph becoming northeast 6-12 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

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THIS DAY IN WEATHER HISTORY:
2018: A potent winter storm struck Southern California. Intense rainfall around Santa Barbara and Ventura measured as high as 0.54 inches in 5 minutes. A 15-foot deadly mud and debris flow hit the community of Montecito, around the burn scar of the Thomas fire. 23 lost their lives, 128 residences were destroyed, and 307 others were damaged. Highway 101 was closed for days due to the mud and debris.

2017: A strong mountain wave produced an impressive wind gust of 107 mph at Burns Canyon (east side of San Bernardino Mountains).

2009: Santa Ana winds gusted up to 83 mph at Fremont Canyon. Winds downed trees and power lines, overturned semi-trucks, and damaged roofs.

2005: Five consecutive days of heavy rainfall started on 1/7 and ended on 1/11. The wet weather was blamed on an atmospheric phenomenon known as the “Pineapple Connection” or “Atmospheric River”. 31.75 inches fell in Lake Arrowhead, 29.70 inches at Lytle Creek, 19.86 inches in Devore, and 15.09 inches at Palomar Mountain. Four to ten inches fell at lower elevations. Flash flooding and mudslides caused millions of dollars of damage to homes, businesses, vehicles, parks, crops, roads and bridges. A state of emergency was declared in Riverside, Orange, San Bernardino, and San Diego Counties. Widespread catastrophic floods impacted nearly every community. This followed heavy storms in late December and earlier in January.

2001: A very high tide and a four foot surf flooded Surfside in Seal Beach. 1998: Heavy rain that started on 1/8 and ended on 1/10 brought two inches of rainfall, causing floods and mud slides in Del Dios (near Escondido). A tornado hit Long Beach causing property damage. A waterspout was observed three miles off Laguna Beach.

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. It was one of the longest periods of consecutive days of rain on record (14) and measurable rain fell nearly every day from 1/2 to 1/19. Flooding and flash flooding, mud slides, etc., resulted.

1949: The most significant snowstorm to hit lower elevations started on this day and ended on 1/11. 14 inches fell in Woodland Hills, eight inches in La Cañada and Catalina Island (at 2,100 feet), six inches in Altadena, five inches in Burbank, four inches in Pasadena, one inch in Laguna Beach and Long Beach. A trace fell in San Diego, the only time since 1882. Three feet piled up at Mt. Laguna, 18 inches fell on Cuyamaca, and one foot in Julian. Four to eight inches fell as low as 1000 feet in elevation. A light covering was reported in La Jolla, Point Loma, Miramar, Escondido, Spring Valley, and other outlying San Diego areas. The snow snarled all kinds of transportation and caused power outages and emergencies. A plane crash killed five and injured one near Julian. A camping group was stranded at Cuyamaca.

1948: It was 82° in Idyllwild, the highest temperature on record for January.

1888: Freezing temperatures in inland valleys killed the citrus crop.

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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. @ 0805 Hrs. TEMP: 430 RH: 83% WIND: W 8 G 15
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, 2019 through December 29, 2019 6,592 135,573
January 1, 2018 through December 29, 2018 6,188 1,018,827
5-Year Average (same interval) 5,752 453,627
2019 Combined YTD (CALFIRE & US Forest Service) 7,860 259,823

Southern California Area (PL 1 )
No Reportable Incidents

Northern California Area (PL 1 )
No Reportable Incidents

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