WEATHER 2/6/20

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: 2/6/20

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.: 41

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
==============================================================================
SOUTH OPS WX:
Strong high pressure will remain off the California Coast through Friday. A storm will move into the Pacific Northwest Saturday and then drop into Central California Sunday and into Southern California Monday. This storm will move into the Desert Southwest Tuesday and be followed by another storm which will drop south from the Pacific Northwest Wednesday.

ꞏ Maximum temperatures will be near normal today, with upper 40s and 50s across the mountains and 60s to low 70s in the valleys

ꞏ Maximum temperatures will warm to around 5 degrees above normal Friday and Saturday, with 50s to low 60s across the mountains and mid 60s to mid 70s in the valleys.

ꞏ Minimum humidity will be mainly between 20% and 40% through Saturday.

ꞏ Winds will be light through Saturday afternoon.
ꞏ South to west winds of 20 to 30 mph with gusts to 50 mph will surface across the mountain ridges and desert passes

Saturday evening through Sunday evening.

ꞏ Scattered showers will move across the Sierra and Southern California Sunday afternoon through Monday evening.

ꞏ Across Southern California, most foothill and mountain locations will receive between a half inch and an inch of rainfall and most coastal and valley locations will receive between a quarter inch and a half inch of rainfall.

ꞏ The sierra will receive less than a quarter inch of rainfall. Otherwise, there will be little or no rainfall across Central California.

ꞏ The snow level will be around 3,000 feet.

ꞏ North to east winds of 20 to 40 mph with gusts to 60 mph will surface across the mountain and below the canyons and passes of Southern California Monday morning through Tuesday morning.

ꞏ It will be dry Tuesday and then scattered showers with light precipitation totals will be possible across the Sierra and Southern California once again Wednesday.

ꞏ Temperatures will be well below normal Sunday through the middle of next week.

SYNOP: (NWS SAN DIEGO)
High pressure off the California coast will continue dry weather with temperatures warming to around average on Friday and Saturday. A shallow marine layer will return today or Friday and slowly deepen into Saturday with greater deepening on Sunday. A cold low pressure system from the north will bring periods of showers,
cooler temperatures, and stronger and gusty winds for late Sunday into Monday. Cooler and breezy weather will then continue for much of next week. Additional precipitation is possible, but with much lower confidence with timing of any periods of additional precipitation.

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
The area will enjoy dry, warmer weather through Saturday with lighter winds and mostly clear skies. A shift to a
colder and wetter weather pattern starts to take shape for the latter part of the weekend into next week.

Key Points:
• Rain and snow possible starting Sunday, with the best chance on Sunday night & Monday
• Snow possible in lower elevations on Monday
• Slick travel is possible due to rain and snow and may impact Monday commutes
• Breezy winds are possible as the system moved through Sunday and/or Monday

There is still significant uncertainty with the details of this system and its potential impacts, confidence is largely unchanged.

SUNDAY THROUGH TUESDAY
A cold, moist weather system will move through SUN-TUE.
Rain/mountain snow chances increase throughout the day SUN with highest chances on MON primarily from Clark County and south.

Precip could linger into TUE across parts of Mohave County.

Cold air could bring snow levels potentially as low as 3000 feet which could create hazardous driving conditions on major interstates.

Highest precip totals expected across Mohave County and possibly in parts of San Bernardino County.
Strong north winds possible..

SPECIAL NOTES:
January 2020 will pass into the record books as an extremely dry one. Since the end of December, few storms have been able to reach the state, and the few that arrived were windy and devoid of moisture. Precipitation was well below 30% of normal in January with only the Sierras and San Joaquin Valley seeing much in the way of measurable precipitation. Temperatures were a few degrees above normal as a monthly average.
Long range outlook do not depict a return of the wet conditions seen late last year. The strong ridge of high pressure which has been ever-present the past few months does not look to dissipate anytime soon. Therefore, a blocking pattern may continue to stifle rainfall by keeping the storm track oriented well north of the district.

There may be a few brief periods of wetter conditions but expect this to be more of an exception to a prolonged dry pattern this month.
Due to the dry weather, dead fuel moisture has dropped to below normal readings across the entire Geographic Area. Fine fuels are the driest, especially over Southern California where precipitation has been the lightest. Should the dry weather persist as expected, seasonal grasses may show signs of curing on open and south aspects by March. But for now, fire spread should be limited to dead fuels and only during windy periods.

However, spring “grassfire season” will likely begin early this year and there may be a spike in resource demand in April.’

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………Mostly sunny. Patchy frost in the morning.
Max temperature…..64 to 70. 24 HR TREND……Up 9 degrees.
Min humidity……..25 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Winds west around 6 mph becoming north around 6 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..34 to 44. 24 HR TREND……Up 3 degrees.
Max humidity……..60 to 70 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds west around 6 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Sunny.
Max temperature…..Around 62. 24 HR TREND……Up 2 degrees.
Min humidity……..15 to 20 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*WRIGHTWOOD:
Thursday
Sunny, with a high near 52. North wind around 5 mph.
Thursday Night
Mostly clear, with a low around 37. Calm wind becoming northwest around 5 mph after midnight.
Friday
Sunny, with a high near 56. North wind around 5 mph.
Friday Night
Clear, with a low around 39. Calm wind becoming north around 5 mph

*BIG PINES / WEST WRIGHTWOOD AREA
Thursday
Sunny, with a high near 53. West northwest wind around 5 mph.
Thursday Night
Clear, with a low around 38. West northwest wind 5 to 10 mph becoming north in the evening.
Friday
Sunny, with a high near 59. North wind 5 to 10 mph becoming light and variable in the morning.
Friday Night
Clear, with a low around 41.

*PHELAN:
Thursday
Sunny, with a high near 59. West wind around 5 mph becoming north in the afternoon.
Thursday Night
Mostly clear, with a low around 41. West wind around 5 mph.
Friday
Sunny, with a high near 62. West wind around 5 mph becoming north in the afternoon.
Friday Night
Clear, with a low around 43. Calm wind becoming southwest around 5 mph

TRONA (INDIAN WELLS) (CAZ298):
.THURSDAY… Sky/weather………Sunny. Widespread frost in the morning.
Max Temperature…..63-68. 24 HR Trend……Up 6-12 degrees.
Min Humidity……..23-32 percent. 24 HR Trend……Up 5-11 percent.
20-Foot Winds…….Northwest 3-5 mph in the early morning shifting to the southeast 3-6 mph by afternoon.
LAL……………..1.
Ventilation………Marginal. Mixing height…….4500 ft AGL. Transport Winds…..West 0 to 5 mph.
Chc Wetting Rain….0 percent.

.THURSDAY NIGHT… Sky/weather………Clear.
Min Temperature…..37-42. 24 HR Trend……Up 3-5 degrees.
Max Humidity……..55-65 percent. 24 HR Trend……Little change.
20-Foot Winds…….Northwest 3-6 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.FRIDAY… Sky/weather………Sunny.
Max Temperature…..66-71. 24 HR Trend……Up 2-4 degrees.
Min Humidity……..17-25 percent. 24 HR Trend……Down 3-9 percent.
20-Foot Winds…….North 3-5 mph in the early morning shifting to the east by afternoon.
LAL……………..1.
Ventilation………Marginal. Mixing height…….3400 ft AGL. Transport Winds…..Northeast 0 to 5 mph.
Chc Wetting Rain….0 percent.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
TODAY… Sky/weather………Mostly sunny. Patchy frost in the morning.
Max temperature…..64 to 70. 24 HR TREND……Up 9 degrees.
Min humidity……..25 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Winds west around 6 mph becoming north around 6 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..34 to 44. 24 HR TREND……Up 3 degrees.
Max humidity……..60 to 70 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds west around 6 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Sunny.
Max temperature…..Around 62. 24 HR TREND……Up 2 degrees.
Min humidity……..15 to 20 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*BAKER:
Thursday
Sunny, with a high near 67. Calm wind becoming south around 5 mph.
Thursday Night
Clear, with a low around 37. North northeast wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 73. Northwest wind 3 to 6 mph.
Friday Night
Clear, with a low around 39. Light northeast wind.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS (CAZ226):
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….63-68.
* 7000 feet…….50-55. * 24 hr trend…..On average up 8 degrees.
* Min humidity: * Valley floor….21-30 percent. *7000 feet…….36-46 percent. * 24 hr trend..On average up 6 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….North winds 10 to 15 mph.
* Upper slopes….Northwest winds 10 to 15 mph.
* 10000 ft msl….North 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..3.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….31-36.
* 7000 feet…….13-18. * 24 hr trend…..Little change.
* Max humidity: * Valley floor….50-55 percent. * 7000 feet…….55-60 percent.
* 24 hr trend…..On average down 18 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds up to 10 mph.
* Upper slopes….Northwest winds 10 to 15 mph.
* 10000 ft msl….North 10 to 20 mph shifting to the northwest 10 to 15 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

.FRIDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….66-71. * 7000 feet….53-58. * 24 hr trend…On average up 3 degrees.
* Min humidity: * Valley floor….13-19 percent. * 7000 feet…….20-30 percent.
* 24 hr trend…..On average down 13 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….North winds up to 10 mph.
* Upper slopes….Northwest winds 10 to 15 mph.
* 10000 ft msl….Northwest 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

KERN CO. DESERTS (CAZ299):
.THURSDAY… Sky/weather……..Sunny.
Max Temperature…..61-66. 24 HR Trend……Up 6-12 degrees.
Min Humidity……..28-38 percent. 24 HR Trend……Up 6-12 percent.
20-Foot Winds…….North 5 mph in the early morning shifting to the southwest 3-7 mph by afternoon.
LAL……………..1.
Ventilation………Fair. Mixing height…….4400 ft AGL. Transport Winds…..Northwest around 5 mph.
Chc Wetting Rain….0 percent.

.THURSDAY NIGHT… Sky/weather………Clear. Areas of frost after midnight.
Min Temperature…..35-40. 24 HR Trend……Up 3-5 degrees.
Max Humidity……..57-67 percent. 24 HR Trend……Up 7-17 percent.
20-Foot Winds…….Northwest 3-7 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.FRIDAY… Sky/weather………Sunny. Areas of frost in the morning.
Max Temperature…..65-70. 24 HR Trend……Up 3-5 degrees.
Min Humidity……..27-37 percent. 24 HR Trend……Down 1-3 percent.
20-Foot Winds…….North 3-6 mph in the early morning shifting to the northeast by afternoon.
LAL……………..1. Ventilation………Marginal.
Mixing height…….3800 ft AGL. Transport Winds…..Northeast 0 to 5 mph. Chc Wetting Rain….0 percent.

INLAND EMPIRE (CAZ248):
TODAY… Sky/weather………Mostly sunny. Patchy frost in the morning.
Max temperature…..62 to 67. 24 HR TREND……Up 7 degrees.
Min humidity……..30 to 40 percent. 24 HR TREND……Up 15 percent.
WIND (20 FT)……..Variable 2 to 4 mph becoming west around 6 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..37 to 45. 24 HR TREND……Up 8 degrees.
Max humidity……..75 to 85 percent. 24 HR TREND……Up 15 percent.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Sunny.
Max temperature…..69 to 74. 24 HR TREND……Up 5 degrees.
Min humidity……..25 to 35 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Variable 2 to 4 mph becoming west around 6 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*DEVORE:
Thursday
Sunny, with a high near 65. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 47. Calm wind.
Friday
Sunny, with a high near 71. Northwest wind 5 to 10 mph becoming southwest in the morning.
Friday Night
Clear, with a low around 51. North wind 5 to 10 mph.

*CHINO HILLS:
Thursday
Sunny, with a high near 63. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 43. Southwest wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 68. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Friday Night
Clear, with a low around 45. Southwest wind around 5 mph becoming calm in the evening.

*COLTON:
Thursday
Sunny, with a high near 68. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 44. Calm wind.
Friday
Sunny, with a high near 73. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Clear, with a low around 47. Southwest wind around 5 mph becoming calm

SAN BERNARDINO N.F. (CAZ255):
TODAY… Sky/weather………Mostly sunny.
Max temperature…..49 to 59 above 6000 feet to 53 to 63 below 6000 feet.
24 HR TREND……Up 7 degrees. Min humidity……..25 to 35 percent.
24 HR TREND……Up 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 9 mph. Gusts to 20 mph in the morning.
RIDGETOP………Winds north 6 to 14 mph. Gusts to 30 mph in the morning.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..24 to 34 above 6000 feet to 35 to 45 below 6000 feet. 24 HR TREND……Up 6 degrees.
Max humidity…40 to 50 percent on desert slopes to 55 to 65 percent on coastal slopes. 24 HR TREND…Down 10 percent.
WIND (20 FT)……..
SLOPES………..Winds northwest around 6 mph becoming northeast around 6 mph after midnight.
RIDGETOP………Winds north 6 to 9 mph. Gusts to 20 mph in the evening.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Sunny.
Max temperature…..53 to 63 above 6000 feet to 58 to 68 below 6000 feet. 24 HR TREND……Up 6 degrees.
Min humidity……..15 to 25 percent. 24 HR TREND……Down 10 percent.
WIND (20 FT)……..
SLOPES………..Winds north around 6 mph.
RIDGETOP………Winds north 6 to 8 mph. Gusts to 20 mph in the morning.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*LAKE ARROWHEAD SCHOOL- AREA:
Thursday
Sunny, with a high near 53. North wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 38. Northeast wind around 5 mph.
Friday
Sunny, with a high near 58. North wind 5 to 10 mph.
Friday Night
Clear, with a low around 39. Northeast wind around 5 mph.

*BIG BEAR SCHOOL AREA:
Thursday
Sunny, with a high near 51. North wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 27. Calm wind.
Friday
Sunny, with a high near 57. Southeast wind 5 to 10 mph becoming north in the morning.
Friday Night
Clear, with a low around 28. Northeast wind around 5 mph becoming calm in the evening.

BANNING PASS (CAZ265):
.TODAY… Sky/weather………Mostly sunny.
Max temperature…..68 to 73. 24 HR TREND……Up 11 degrees.
Min humidity……..15 to 20 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..42 to 52. 24 HR TREND……Up 4 degrees.
Max humidity……..55 to 65 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.FRIDAY… Sky/weather………Sunny.
Max temperature…..73 to 78. 24 HR TREND……Up 4 degrees.
Min humidity……..20 to 25 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ230):
.TODAY… * Sky/weather…………………Mostly sunny.
* Max Temperature……………..59-71. * 24 hr trend………………10 degrees warmer.
* Min Humidity………………..21-28 pct. * 24 hr trend………………8 pct wetter.
* Winds – 20 foot…Slope/Valley..Northwest 5 to 15 mph.
* Winds…10000 FT MSL…………Northwest 20 to 30 mph.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.
* Haines High Level Index………3 very low potential for large plume dominated fire growth.

.TONIGHT… * Sky/weather…………………Clear.
* Min Temperature……………..38-46. * 24 hr trend………………4 degrees warmer.
* Max Humidity………………..46-59 pct. * 24 hr trend………………7 pct wetter.
* Winds – 20 foot…Slope/Valley..Northwest 5 to 15 mph.
* Winds…10000 FT MSL…………North 20 to 30 mph.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.

.FRIDAY… * Sky/weather…………………Sunny.
* Max Temperature……………..63-75. * 24 hr trend………………4 degrees warmer.
* Min Humidity………………..16-23 pct. * 24 hr trend………………5 pct drier.
* Winds – 20 foot…Slope/Valley..North 5 to 15 mph.
* Winds…10000 FT MSL…………North 20 to 30 mph.
* 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………Sunny.
* Max temperature: * Valley floor….66-71. * 24 hr trend…..On average up 11 degrees.
* Min humidity: * Valley floor….19-29 percent. * 24 hr trend…..On average up 9 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….North 30 to 40 mph becoming northwest 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..3.
* Mixing height…….2400 ft agl. * Transport winds…..Light winds. * Ventilation………Marginal.

.TONIGHT… * Sky/Weather………Clear.
* Min temperature: * Valley floor….38-43. * 24 hr trend…..On average up 5 degrees.
* Max humidity: * Valley floor….58-63 percent. * 24 hr trend…..On average up 9 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Downslope/downvalley 2 to 5 mph.
* 10000 ft msl….Northwest 25 to 35 mph increasing to north 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….72-77. * 24 hr trend…..On average up 6 degrees.
* Min humidity: * Valley floor….16-26 percent. * 24 hr trend…..On average down 3 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph becoming north around 10 mph in the afternoon.
* 10000 ft msl….North 30 to 40 mph decreasing to 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.
* Mixing height…….3500 ft agl. * Transport winds…..North around 10 knots. * Ventilation………Fair.

STATELINE – CLARK COUNTY BORDER (NVZ465):
.TODAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….62-67. * 24 hr trend…..On average up 11 degrees.
* Min humidity: * 4000 feet…….24-30 percent. * 24 hr trend…..On average up 9 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming northwest up to 10 mph in the afternoon.
* 10000 ft msl….North 30 to 40 mph decreasing to 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..3.
* Mixing height…….1700 ft agl. * Transport winds…..Light winds. * Ventilation………Poor.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * 4000 feet…….34-39. * 24 hr trend…..On average up 3 degrees.
* Max humidity: * 4000 feet…….62-67 percent. * 24 hr trend…..On average down 2 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds up to 10 mph in the evening becoming downslope/downvalley 2 to 5 mph.
* 10000 ft msl….North 25 to 35 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.

.FRIDAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….66-71. * 24 hr trend…..On average up 4 degrees.
* Min humidity: * 4000 feet…….15-25 percent. * 24 hr trend…..On average down 7 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming northeast up to 10 mph in the afternoon.
* 10000 ft msl….North 25 to 35 mph decreasing to 20 to 30 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..4.
* Mixing height…….2400 ft agl. * Transport winds…..Light winds. * Ventilation………Marginal.

*La Jolla CA
Thursday
Sunny, with a high near 59. Southeast wind around 5 mph becoming southwest in the afternoon.
Thursday Night
Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 48. Calm wind.
Friday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 60. Northwest wind around 5 mph.
Friday Night
Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 50. North wind around 5 mph becoming calm.

*Poway CA
Thursday
Sunny, with a high near 66. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 44. Calm wind.
Friday
Patchy fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 69. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 47. Calm wind.

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

Accumulating snow will continue in the valleys of northern Utah Thursday morning, with some impacts expected for the morning commute. Snow will transition to rain or a rain/snow mix in some valleys Thursday afternoon.

The northern Utah mountains and some higher valleys will have the potential to see significant snowfall through Friday.

Strong gusty winds in the higher elevations of Utah and southwest Wyoming, western Uinta Basin, and Castle Country Thursday through Friday will lead to areas of blowing snow.

Thursday
Mostly sunny, with a high near 45. East southeast wind 7 to 10 mph becoming north northeast in the morning.
Thursday Night
Mostly clear, with a low around 24. North wind 6 to 9 mph becoming west southwest after midnight.
Friday
Sunny, with a high near 47. South wind around 9 mph.
Friday Night
Mostly clear, with a low around 25. East northeast wind 5 to 8 mph becoming calm in the evening.

*************************** L.A COUNTY ********************************
CHANCE OF SHOWERS SUNDAY AND MONDAY
LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ548):
.THURSDAY… Sky/weather………Sunny.
Max temperature…..63-70. 24 hr trend……Up 3.
Min humidity……..30-50 percent. 24 hr trend……Up 15-25.
20-foot winds…….Variable 3-6 mph becoming south to southwest 8-15 mph in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.THURSDAY NIGHT… Sky/weather………Clear.
Min temperature…..41-49.
Max humidity……..80-100 percent except 50-65 percent in the hills.
20-foot winds…….South to southwest 8-15 mph early becoming variable 3-6 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY: Sky/weather………Sunny.
Max temperature…..68-74. Min humidity……..30-50 percent.
20-foot winds…….Variable 3-6 mph becoming south to southwest 8-15 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANGELES NATIONAL FOREST (CAZ254):
.THURSDAY… Sky/weather………Sunny.
Max temperature…..61-67 low elevations to 53-61 higher elevations. 24 hr trend……Up 3-6.
Min humidity……..20-40 percent. 24 hr trend……Up 10-20.
20-foot winds…….
Valleys/lwr slopes…Variable/upslope 4-8 mph becoming upvalley 6-12 mph with gusts to 20 mph in the afternoon.
Ridges/upr slopes….Northwest to north 10-20 mph.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.THURSDAY NIGHT… Sky/weather………Clear.
Min temperature…..40-49 low elevations to 30-40 colder valleys and peaks.
Max humidity……..35-50 percent except 75-85 percent colder valleys.
20-foot winds…….
Valleys/lwr slopes…Upvalley 6-12 mph with gusts to 20 mph early becoming downslope/downvalley 3-6 mph.
Ridges/upr slopes….Northwest to north 5-15 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.FRIDAY… Sky/weather………Sunny.
Max temperature…..64-71 low elevations to 56-64 higher elevations.
Min humidity……..20-40 percent.
20-foot winds…….
Valleys/lwr slopes…Variable/upslope 4-8 mph becoming upvalley 6-12 mph with gusts to 20 mph in the afternoon.
Ridges/upr slopes….Northwest to north 10-20 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANTELOPE VALLEY (CAZ259):
.THURSDAY… Sky/weather………Sunny.
Max temperature…..59-68. 24 hr trend……Up 9.
Min humidity……..25-35 percent. 24 hr trend……Up 5-10.
20-foot winds…….Variable 3-6 mph becoming southwest 8-15 mph in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.THURSDAY NIGHT… Sky/weather………Clear.
Min temperature…..29-37 except 37-42 in the hills.
Max humidity……..80-100 percent except 55-70 percent in the hills.
20-foot winds…….Southwest to west 8-15 mph early becoming variable 3-6 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.FRIDAY… Sky/weather………Sunny.
Max temperature…..61-71.
Min humidity……..20-30 percent.
20-foot winds…….Variable 3-6 mph becoming southwest to west 8-15 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

============================================================
THIS DAY IN WEATHER HISTORY:
2006: Santa Ana winds flared up on this day and on 2/7 and led to the Sierra Fire east of Orange. It burned nearly 11,000 acres and caused eight minor injuries.

2001: Over a week of heavy snow started on this day and ended on 2/14. The snowfall was called “most in a decade.” Five feet fell at Blue Jay and Mountain High, two feet at Snow Summit, and five to 12 inches at Apple Valley. Mountain High resort reported 12 inches of new snow on this day. The roof of an ice rink caved in at Blue Jay.

1998: El Niño kicked into gear. Heavy rain that started on this day and ended on 2/9 brought up to three inches of rainfall to Southern California. Catastrophic and widespread flooding resulted, especially in Newport Beach and Irvine. Lots of property damage occurred in southern Orange County. Evacuations and swift water rescues were needed. Landslides, mud slides, and sink holes occurred. Roads, bridges, and railroads were damaged.

1992: A series of many intense storms started on 2/5 and ended on 2/16. The storms brought a total of 20+ inches of precipitation to the mountains and eight to16+ inches to lower elevations. Two were killed in an avalanche at Mt. Baldy. Flash flooding, mud slides, and road closures also occurred.

1989: It was 12° in Palomar Mountain, the lowest temperature on record for February.

1987: Santa Ana winds hit San Diego County on this day and on 2/7. Gusts up to 75 mph were recorded at Cuyamaca and Palomar Mountain areas. Gusts to 60 mph hit Brown Field and Warner Springs, 40 mph in Julian and Valley Center. 35 mph gusts hit San Diego. A plane flipped over at Brown Field. Winds forced a sailboat into the rocks at Pt. Loma. I-8 was closed for two hours in eastern San Diego County. Trees, power lines and fences were downed, causing damage and power outages. A highway sign fell on cars. Record warm weather came to the coast: 82° at San Diego and 84° at Oceanside.

1976: Strong storm winds hit 64 mph at Palmdale.

1950: Heavy rain led to Chino Creek inundating Highway 71 from Corona to Ontario.

1937: 2.71 inches of rain fell in San Diego, the third wettest calendar day and the wettest February day on record. 2.90 inches of rain fell, beginning on this day and ending on 2/7, the greatest 24-hour amount for February on record. 2.60 inches fell in 12 hours. For the storm from 2/4 to 2/7, 10 inches fell in Cuyamaca, 8.20 inches fell in Descanso, and 5.70 inches in Escondido. On this day and 2/7, 4.25 inches fell in Long Beach, a 24 hour record. Flooding killed many. The LA basin flooded in many communities. Hodges Dam overtopped. Mountain snowmelt added to the flooding.

1905: Heavy rains from 2/4 to this day caused the San Diego River to run for the first time in six years. 4.23 inches fell in San Diego in 43 hours.
==================================================================
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.

======================================================================
CURRENT WEATHER @ HESP. @ 0805 Hrs. TEMP: 460 RH: 49% WIND: W 4 G 10
3.21” RF @ HESP. STA.SINCE OCT. 1st/20 Yr Avg: 7.12” : MONTH: 0.00” YTD S/F: 4.50” /
=================================================================
FIRES: UPDATED

National Preparedness Level (PL 1 )

CDF FIRES TO DATE (STATE LANDS SRA)

Southern California Area (PL 1 )
No Reportable Incidents

Northern California Area (PL 1 )
No Reportable Incidents

Leave a Reply

Your email address will not be published. Required fields are marked *