WEATHER 2/10/19

DAILY FIRE WEATHER & FIRE INFO
To: 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: 2/10/19

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.:04

National Preparedness Level (PL 1 )

Southern California Area
Preparedness Level: (PL 2 )

Northern California Area
Preparedness Level (PL 1 )

SYNOP:
A cold low pressure system will bring rain and snow showers mainly this afternoon and evening to our region. Winds will be strong from the west and northwest over the mountains and deserts.
Monday and Tuesday are expected to be dry and milder. Widespread rain is likely Wednesday afternoon through Thursday morning with the potential for heavy precipitation totals. Additional precipitation is possible Thursday and Friday, but with low forecaster confidence at this time.

WEATHER SUMMARY
Rain and snow today, with heavy snow in the mountains. Precip. ending this evening. Dry Mon-Tue. An Atmospheric River storm system will arrive Wednesday. There will be potential for heavy rain Wednesday afternoon through Thursday morning. Additional storm systems, possible Fri-Sat.

Confidence Level: Moderate to High
Showers today, heavy snow in mountains
Impacts
Snow in the mountains
Snow levels down to 3000-3500 by evening
Accumulations at pass levels could cause problems
Showers ending this evening

Strong winds today
Details & Locations Strong winds over the mountains and deserts, with gusts to 65 mph possible
Blustery conditions on the coastal waters, gusts 25-30 knots
Timing Through this evening

Atmospheric River Storm Wed-Thu

Impacts
Heavy rain possible
Flooding Potential
Impact to burn scars possible

Details & Locations
Incoming atmospheric river storm with heavy rain possible Wed afternoon
through Thu morning
Widespread rainfall, with several inches of rain possible
High snow levels

Timing Rain Wed & Thu Additional storm possible Fri-Sat

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
Winds will be strong today and out of the southwest before shifting to the northwest this evening. Initially 10-20 mph winds with gusts to 30 mph can be expected for most of the desert valleys and gusts as high as 50 mph in higher elevations of area mountains. Peak winds are expected this afternoon when a wind advisory will go into effect prior to the cold front passage. Once the shift of winds to the northwest occurs, winds should subside to 10-20 mph.

DAILY FUELS/FIRE POTENTIAL:

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

—————————————————————-
APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):
WIND ADVISORY IN EFFECT FROM 10 AM TO 8 PM PST SUNDAY
TODAY… Sky/weather………Partly cloudy. Slight chance of rain in the morning, then chance of rain in the afternoon.
Max temperature…..45 to 54. 24 HR TREND……Down 6 degrees.
Min humidity……..45 to 55 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds southwest 18 to 28 mph. Gusts to 45 mph…becoming 55 mph in the afternoon.
CWR (>0.10 IN)……31 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear. Slight chance of showers in the evening.
Min temperature…..24 to 29. 24 HR TREND……Down 8 degrees.
Max humidity……..70 to 80 percent. 24 HR TREND……Down 15 percent.
WIND (20 FT)……..Winds west 14 to 24 mph. Gusts to 45 mph…becoming 30 mph after midnight.
CWR (>0.10 IN)……3 percent. LAL……………..1.

.MONDAY… Sky/weather………Sunny.
Max temperature…..45 to 50. 24 HR TREND……Up 2 degrees.
Min humidity……..25 to 30 percent. 24 HR TREND……Down 20 percent.
WIND (20 FT)……..Winds west around 6 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

WRIGHTWOOD:
WINTER STORM WARNING FOR THE SAN BERNARDINO MOUNTAINS SUNDAY AND SUNDAY EVENING|…
…WINTER WEATHER ADVISORY FOR THE RIVERSIDE AND SAN DIEGO COUNTY
MOUNTAINS SUNDAY AND SUNDAY EVENING

Sunday
Snow likely. Areas of fog. Otherwise, partly sunny, with a high near 31. Windy, with a southwest wind 35 to 40 mph, with gusts as high as 55 mph. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.

Sunday Night
A chance of snow showers before 10pm. Areas of fog before 10pm. Otherwise, partly cloudy, with a low around 20. Blustery, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

Monday
Sunny, with a high near 36. West wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

Monday Night
Mostly clear, with a low around 27. West wind 15 to 20 mph, with gusts as high as 30 mph.

BIG PINES / WEST WRIGHTWOOD AREA
WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM SUNDAY TO 6 AM PST MONDAY

Sunday
Snow. High near 31. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Sunday Night
A 30 percent chance of snow showers, mainly before 10pm. Partly cloudy, with a low around 21. Blustery, with a north northwest wind 15 to 25 mph, with gusts as high as 35 mph. New snow accumulation of less than a half inch possible.

Monday
Sunny, with a high near 35. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 26. West southwest wind around 10 mph, with gusts as high as 15 mph.

PHELAN:
WIND ADVISORY IN EFFECT FROM 10 AM TO 8 PM PST SUNDAY
Sunday
A chance of snow before 10am, then a chance of rain. Partly sunny, with a high near 40. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

Sunday Night
Mostly clear, with a low around 25. West wind 15 to 20 mph, with gusts as high as 35 mph.
Monday
Sunny, with a high near 43. West wind 15 to 20 mph becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 28. Light southwest wind becoming south 5 to 10 mph after midnight.

TRONA:
WIND ADVISORY REMAINS IN EFFECT FROM 10 AM SUNDAY TO MIDNIGHT PST SUNDAY NIGHT

Sunday
A 50 percent chance of showers, mainly after 10am. Increasing clouds, with a high near 53. Breezy, with a south southwest wind 14 to 19 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 41 mph.

Sunday Night
Clear, with a low around 28. West wind 5 to 9 mph becoming calm in the evening.

Monday
Sunny, with a high near 52. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 31. Light south southwest wind.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
TODAY… * Sky/Weather………Partly cloudy with isolated showers.
* Max temperature: * Valley floor….59-64. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * Valley floor….29-39 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Southwest wind 10 to 15 mph increasing to 15 to 25 mph in the afternoon. Gusts up to 45 mph.
* 10000 ft msl….Southwest 35 to 45 mph increasing to 45 to 55 mph in the afternoon.
* CWR (>= 0.10 in)….5 percent. * LAL……………..1.
* Haines Index……..5.

.TONIGHT… * Sky/Weather………Partly cloudy.
* Min temperature: * Valley floor….26-31. * 24 hr trend…..On average down 6 degrees.
* Max humidity: * Valley floor….54-59 percent. * 24 hr trend…..On average down 23 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….West wind 10 to 15 mph with gusts to around 40 mph decreasing to around 10 mph after midnight.
* 10000 ft msl….West 35 to 45 mph becoming northwest 30 to 40 mph after midnight.
* CWR (>= 0.10 in)….5 percent. * LAL……………..1.
* Haines Index……..4.

.MONDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….54-59. * 24 hr trend…..On average down 5 degrees.
* Min humidity: * Valley floor….13-23 percent. * 24 hr trend…..On average down 16 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….Northwest 25 to 35 mph becoming west 15 to 25 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..5.

BAKER:
Sunday
A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 59. Breezy, with a south wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
Mostly clear, with a low around 26. West wind 5 to 10 mph becoming light west southwest after midnight.
Monday
Sunny, with a high near 55. Light south southwest wind.
Monday Night
Mostly clear, with a low around 28. Southeast wind around 5 mph.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS:
TODAY… * Sky/Weather………Partly cloudy with scattered snow showers.
* Max temperature: * Valley floor….45-50. * 7000 feet…….29-34. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….23-33 percent. * 7000 feet….41-51 percent. * 24 hr trend…..On average down 5 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Southwest winds 10 to 15 mph shifting to the west in the afternoon. Gusts up to 50 mph.
* Upper slopes….Windy. West winds 20 to 30 mph with gusts to around 60 mph.
* 10000 ft msl….Southwest 30 to 40 mph.
* CWR (>= 0.10 in)….60 percent decreasing to 40 percent in the afternoon.
* LAL……………..1. * Haines Index……..3.

.TONIGHT… * Sky/Weather………Mostly clear.
Min temperature: *Valley floor….17-22. * 7000 feet…5 below-10 below zero. * 24 hr trend..On average down 10 degrees.
* Max humidity: * Valley floor….43-48 percent. * 7000 feet…65-70 percent. * 24 hr trend…On average down 15 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….West winds up to 10 mph. Gusts up to 40 mph in the evening.
* Upper slopes….West winds 10 to 20 mph. Gusts up to 45 mph decreasing to 35 mph after midnight.
* 10000 ft msl….West 15 to 25 mph becoming northwest 10 to 15 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.MONDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….45-50. * 7000 feet…….31-36. * 24 hr trend….On average down 2 degrees.
* Min humidity: * Valley floor….22-31 percent. * 7000 feet….27-37 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 south up to 10 mph in the afternoon. Gusts up to 25 mph.
* Upper slopes….West winds 10 to 15 mph with gusts to around 35 mph.
* 10000 ft msl….West 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..5.

INLAND EMPIRE (CAZ248):
.TODAY… Sky/weather………Cloudy. Chance of rain in the morning, then rain likely in the afternoon.
Max temperature…..46 to 55. 24 HR TREND……Down 1 degree.
Min humidity……..65 to 75 percent. 24 HR TREND……Up 10 percent.
WIND (20 FT)……..Winds southeast 6 to 9 mph becoming southwest 6 to 12 mph in the afternoon. Gusts to 25 mph.
CWR (>0.10 IN)……67 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly cloudy…becoming mostly clear. Chance of showers in the evening.
Min temperature…..31 to 37. 24 HR TREND……Down 5 degrees.
Max humidity……..85 to 95 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds southwest 6 to 11 mph becoming north 6 to 12 mph after midnight. Gusts to 25 mph.
CWR (>0.10 IN)……5 percent. LAL……………..1.

.MONDAY… Sky/weather………Mostly sunny.
Max temperature…..50 to 59. 24 HR TREND……Up 2 degrees.
Min humidity……..30 to 40 percent. 24 HR TREND……Down 35 percent.
WIND (20 FT)……..Winds southeast around 6 mph in the morning becoming variable 2 to 4 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

DEVORE:
Sunday
Rain likely. Mostly cloudy, with a high near 47. Southeast wind 5 to 10 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers before 10pm. Partly cloudy, with a low around 36. Northwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 52. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 38. East wind around 5 mph becoming north after midnight.

CHINO HILLS:
Sunday
Rain likely. Cloudy, then gradually becoming mostly sunny, with a high near 52. Light and variable wind becoming southwest 15 to 20 mph in the morning. Winds could gust as high as 35 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers before 10pm. Partly cloudy, with a low around 36. West wind around 5 mph becoming southeast in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 55. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 37. Southwest wind around 5 mph becoming east in the evening

COLTON:
Sunday
Rain likely. Mostly cloudy, with a high near 53. South wind 5 to 10 mph becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers before 10pm. Partly cloudy, with a low around 38. Calm wind becoming northeast around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 57. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 41. East wind around 5 mph becoming calm after midnight.

SAN BERNARDINO N.F. (CAZ255/CAZ256):
WINTER STORM WARNING FOR THE SAN BERNARDINO MOUNTAINS SUNDAY AND SUNDAY EVENING|…
…WINTER WEATHER ADVISORY FOR THE RIVERSIDE AND SAN DIEGO COUNTY
MOUNTAINS SUNDAY AND SUNDAY EVENING
TODAY… Sky/weather………Partly cloudy…becoming mostly cloudy. Areas of fog. Chance of snow in the morning. Snow with rain likely in the afternoon.
Max temperature…..28 to 38 above 6000 feet to 38 to 48 below 6000 feet. 24 HR TREND……Little change.
Min humidity……..40 to 50 percent on desert slopes to 60 to 70 percent on coastal slopes.
24 HR TREND……Up 10 percent.
WIND (20 FT)……..
SLOPES………..Winds west 24 to 34 mph. Gusts to 45 mph…becoming 65 mph in the afternoon.
RIDGETOP………Winds west 27 to 37 mph. Gusts to 55 mph…becoming 70 mph in the afternoon.
CWR (>0.10 IN)……61 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly cloudy…becoming mostly clear. Areas of fog in the evening. Chance of showers in the evening.
Min temperature…..3 to 13 above 6000 feet to 12 to 22 below 6000 feet. 24 HR TREND……Down 6 degrees.
Max humidity……..75 to 85 percent on desert slopes to 90 to 100 percent on coastal slopes.
24 HR TREND……Little change.
WIND (20 FT)……..
SLOPES………..Winds west 22 to 32 mph with gusts to 60 mph becoming north 9 to 19 mph with gusts to 35 mph after midnight.
RIDGETOP………Winds west 25 to 35 mph with gusts to 65 mph becoming northwest 13 to 23 mph with gusts to 45 mph after midnight.
CWR (>0.10 IN)……6 percent. LAL……………..1.

.MONDAY… Sky/weather………Sunny.
Max temperature…..30 to 38 above 6000 feet to 39 to 48 below 6000 feet. 24 HR TREND……Up 3 degrees.
Min humidity…15 to 25 percent on desert slopes to 20 to 30 percent on coastal slopes. 24 HR TREND..Down 55 percent.
WIND (20 FT)……..
SLOPES………..Winds east 6 to 10 mph with gusts to 20 mph becoming south 6 to 8 mph in the afternoon.
RIDGETOP………Winds west 6 to 13 mph. Gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

LAKE ARROWHEAD SCHOOL- AREA:
WINTER STORM WARNING FOR THE SAN BERNARDINO MOUNTAINS SUNDAY AND SUNDAY EVENING|…
…WINTER WEATHER ADVISORY FOR THE RIVERSIDE AND SAN DIEGO COUNTY
MOUNTAINS SUNDAY AND SUNDAY EVENING
Sunday
Snow. Areas of fog. High near 34. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New snow accumulation of 4 to 8 inches possible.
Sunday Night
Snow showers likely before 10pm. Areas of fog before 10pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 17. Northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Monday
Sunny, with a high near 38. Northeast wind 5 to 10 mph becoming light and variable.
Monday Night
Mostly clear, with a low around 22. Southeast wind around 10 mph.

BIG BEAR SCHOOL AREA:
WINTER STORM WARNING FOR THE SAN BERNARDINO MOUNTAINS SUNDAY AND SUNDAY EVENING|…
…WINTER WEATHER ADVISORY FOR THE RIVERSIDE AND SAN DIEGO COUNTY
MOUNTAINS SUNDAY AND SUNDAY EVENING
Sunday
Snow likely, mainly after 10am. Partly sunny, with a high near 30. Windy, with a southwest wind 25 to 30 mph increasing to 35 to 40 mph in the afternoon. Winds could gust as high as 60 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.
Sunday Night
A chance of snow showers before 10pm. Partly cloudy, with a low around 12. Wind chill values as low as zero. Northwest wind 15 to 20 mph becoming southwest 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 40%. New snow accumulation of around an inch possible.
Monday
Sunny, with a high near 34. Wind chill values as low as -5. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 16. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

BANNING PASS:
.TODAY… Sky/weather………Mostly sunny. Slight chance of rain in the afternoon.
Max temperature…..61 to 66. 24 HR TREND……Down 4 degrees.
Min humidity……..35 to 45 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Winds west 13 to 23 mph. Gusts to 35 mph…becoming 45 mph in the afternoon.
CWR (>0.10 IN)……6 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear. Slight chance of showers in the evening.
Min temperature…..36 to 44. 24 HR TREND……Down 4 degrees.
Max humidity……..60 to 70 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Winds west 14 to 24 mph. Gusts to 45 mph…becoming 35 mph after midnight.
CWR (>0.10 IN)……2 percent. LAL……………..1.

.MONDAY… Sky/weather………Sunny.
Max temperature…..59 to 64. 24 HR TREND……Down 1 degree.
Min humidity……..15 to 20 percent. 24 HR TREND……Down 25 percent.
WIND (20 FT)……..Winds southeast 6 to 8 mph. Gusts to 20 mph in the morning.
CWR (>0.10 IN)……0 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ261):
TODAY…
* Sky/weather…………………Mostly sunny. Slight chance of
showers in the afternoon.
* Max Temperature……………..45-59.
* 24 hr trend………………Little change.
* Min Humidity………………..39-65 pct.
* 24 hr trend………………11 pct wetter.
* Winds – 20 foot…Slope/Valley..Southwest 10 to 20 mph.
* Winds…10000 FT MSL…………West 25 to 35 mph in the morning
becoming 35 to 45 mph in the afternoon.
* 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…………………Mostly clear. Slight chance of
showers and snow showers in the evening.
* Min Temperature……………..26-35.
* 24 hr trend………………3 degrees cooler.
* Max Humidity………………..56-79 pct.
* 24 hr trend………………11 pct drier.
* Winds – 20 foot…Slope/Valley..Northwest 10 to 20 mph.
* Winds…10000 FT MSL…………West 40 to 50 mph in the evening
becoming northwest 30 to 40 mph after midnight.
* Chance of Precip…………….10 percent in the evening
becoming 0 percent after midnight.
* CWR (>= 0.10 IN)…………….0 percent.
* LAL………………………..1.

.MONDAY… * Sky/weather…………………Sunny.
* Max Temperature……………..44-56. * 24 hr trend………………Little change.
* Min Humidity………………..17-27 pct. * 24 hr trend………………29 pct drier.
* Winds – 20 foot…Slope/Valley..Northwest 5 to 10 mph in the morning becoming southeast in the afternoon.
* 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………5 or moderate potential for large plume dominated fire growth.

NEEDLES, RIVER BAT. (CAZ229):
TODAY… * Sky/Weather………Partly cloudy. Scattered rain showers.
* Max temperature: * Valley floor….61-66. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….25-35 percent. * 24 hr trend…..On average up 2 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….South wind 10 to 15 mph with gusts to around 35 mph.
* 10000 ft msl….Southwest 35 to 45 mph increasing to 40 to 50 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..5.
* Mixing height…….8500 ft agl.
* Transport winds…..South 10 to 15 knots increasing to 15 to 25 knots in the afternoon.
* Ventilation………Excellent.

.TONIGHT… * Sky/Weather………Partly cloudy. Scattered rain showers.
* Min temperature: * Valley floor….30-35. * 24 hr trend…..On average down 6 degrees.
* Max humidity: * Valley floor….46-51 percent. * 24 hr trend…..On average down 15 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Northwest wind up to 10 mph. Gusts up to 30 mph decreasing to 20 mph after midnight.
* 10000 ft msl….Southwest 35 to 45 mph becoming northwest 25 to 35 mph after midnight.
* CWR (>= 0.10 in)….15 percent. * LAL……………..1.
* Haines Index……..3.

.MONDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….56-61. * 24 hr trend…..On average down 5 degrees.
* Min humidity: * Valley floor….13-23 percent. * 24 hr trend…..On average down 12 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….Northwest 30 to 40 mph decreasing to 20 to 30 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..5.
* Mixing height…….5500 ft agl.
* Transport winds…..North 10 to 15 knots.
* Ventilation………Very good.

STATELINE – CLARK COUNTY BORDER:
TODAY… * Sky/Weather………Partly cloudy. Scattered rain showers and snow showers.
* Max temperature: * 4000 feet…….53-58. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * 4000 feet…….30-40 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Southwest winds 10 to 20 mph with gusts to around 40 mph.
* 10000 ft msl….Southwest 40 to 50 mph increasing to 45 to 55 mph in the afternoon.
* CWR (>= 0.10 in)….10 percent. * LAL……………..1.
* Haines Index……..2.
* Mixing height…….7000 ft agl.
* Transport winds…..Southwest 10 to 20 knots increasing to 25 to 30 knots in the afternoon.
* Ventilation………Excellent.

.TONIGHT… * Sky/Weather………Partly cloudy.
* Min temperature: * 4000 feet…….24-29. * 24 hr trend…..On average down 6 degrees.
* Max humidity: * 4000 feet…….52-57 percent. * 24 hr trend…..On average down 18 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northwest winds around 10 mph with gusts to around 35 mph in the evening becoming downslope/downvalley 2 to 5 mph.
* 10000 ft msl….West 35 to 45 mph becoming northwest 30 to 40 mph after midnight.
* CWR (>= 0.10 in)….5 percent. * LAL……………..1.
* Haines Index……..4.

.MONDAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….47-52. * 24 hr trend…..On average down 6 degrees.
* Min humidity: * 4000 feet…….18-27 percent. * 24 hr trend…..On average down 12 percent.
* Wind (slope/valley=20 ft, 10 min avg): * Slope/valley….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….Northwest 30 to 40 mph becoming west 20 to 30 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..5.
* Mixing height…….4300 ft agl.
* Transport winds…..Light winds.
* Ventilation………Marginal.

*************************** OUT OF COUNTY ********************************
LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ247/CAZ249):
Sunday
Rain. High near 53. Southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%.
Sunday Night
Mostly clear, with a low around 37. North northwest wind around 5 mph.
Monday
Sunny, with a high near 57. Calm wind becoming south southwest around 5 mph.
Monday Night
Mostly clear, with a low around 37. Southwest wind around 5 mph becoming calm in the evening.

LOS ANGELES COUNTY SAN FERNANDO VALLEY:
Sunday
Rain. High near 54. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Sunday Night
Mostly clear, with a low around 38. North northwest wind around 5 mph.
Monday
Sunny, with a high near 58. Calm wind becoming south southwest around 5 mph in the morning.
Monday Night
Mostly clear, with a low around 37. South southwest wind around 5 mph becoming calm in the evening.

SANTA CLARITA VALLEY:
Sunday
Rain. High near 51. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Sunday Night
Areas of frost after 10pm. Otherwise, mostly clear, with a low around 33. North wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Areas of frost before 10am. Otherwise, sunny, with a high near 56. North wind 5 to 10 mph becoming southwest in the morning.
Monday Night
Areas of frost after 10pm. Otherwise, mostly clear, with a low around 33. Southwest wind around 5 mph becoming north in the evening.

SANTA MONICA MOUNTAINS RECREATIONAL AREA:
Sunday
Rain. High near 50. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Sunday Night
Mostly clear, with a low around 36. North wind around 10 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 53. North wind 5 to 10 mph becoming southwest in the morning.
Monday Night
Mostly clear, with a low around 38. South southwest wind around 5 mph becoming calm in the evening.

ANGELES NATIONAL FOREST (CAZ253):
WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM SUNDAY TO 6 AM PST MONDAY…
Moderate snow expected. Total snow accumulations 3 to 7 inches, highest across the San Gabriels. Snow levels 3500 to 4000 feet on Sunday lowering to 2000 to 3000 feet later Sunday afternoon or evening. Gusty southwest winds 25 to 35 mph with gusts to 50 mph becoming north Sunday night.

Sunday
Rain and snow before 10am, then rain between 10am and 4pm, then rain, possibly mixed with snow after 4pm. High near 38. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Sunday Night
A 20 percent chance of snow showers before 10pm. Mostly clear, with a low around 29. North northwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 44. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly clear, with a low around 33. Southwest wind around 5 mph

ANTELOPE VALLEY (CAZ259):
WIND ADVISORY REMAINS IN EFFECT FROM 10 AM TO 8 PM PST SUNDAY
Sunday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 46. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%.
Sunday Night
Areas of frost after 10pm. Otherwise, mostly clear, with a low around 27. Breezy, with a west northwest wind around 20 mph, with gusts as high as 30 mph.
Monday
Areas of frost before 10am. Otherwise, sunny, with a high near 49. West northwest wind around 15 mph, with gusts as high as 20 mph.
Monday Night
Areas of frost after 10pm. Otherwise, mostly clear, with a low around 26. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

KERN CO. DESERTS (CAZ298):
HIGH WIND WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING
Sunday
Showers. High near 48. Breezy, with a south southwest wind 15 to 20 mph becoming west 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly clear, with a low around 31. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 51. West northwest wind around 5 mph.
Monday Night
Mostly clear, with a low around 29. West wind around 5 mph becoming calm

La Jolla CA
Sunday
A chance of rain. Mostly cloudy, with a high near 57. Southeast wind 5 to 15 mph becoming west in the morning. 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.
Sunday Night
A chance of showers before 10pm. Partly cloudy, with a low around 44. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 56. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 45. North wind around 5 mph becoming calm in the evening.

Poway CA
Sunday
A chance of rain. Mostly cloudy, with a high near 57. Southeast wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. West wind 5 to 10 mph becoming light and variable. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 58. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 38. Northeast wind around 5 mph becoming calm

CEDAR CITY Ut.
DAYS TWO THROUGH SEVEN…Sunday through Friday

Expect a period of moderate to heavy snow to cross the state late Sunday through Sunday evening along a strong cold front. A few rumbles of thunder cannot be ruled out. Most of the snow accumulations will come in a 2 to 3 hour window at lower elevations, and with cold temperatures overnight, expect possible
lingering travel issues into the Monday morning commute. Snow showers in the mountains will linger into Monday, with winter driving conditions over mountains passes.

High pressure will bring a short break to the snow for Tuesday through the day on Wednesday. Snow will return for late in the week. The potential for heavy snow will exist, especially for the northern and western portions of the outlook area

WINTER WEATHER ADVISORY IN EFFECT FROM NOON SUNDAY TO 4 AM MST
WIND ADVISORY IN EFFECT FROM 8 AM TO 7 PM MST SUNDAY
SUNDAY
Snow showers, mainly after 11am. The snow could be heavy at times. Some thunder is also possible. High near 36. Windy, with a south southwest wind 22 to 31 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Sunday Night
Snow showers, mainly before 11pm. The snow could be heavy at times. Some thunder is also possible. Low around 8. Wind chill values as low as zero. Breezy, with a west southwest wind 19 to 29 mph becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 43 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Monday
Sunny, with a high near 29. Wind chill values as low as -2. South southeast wind around 7 mph becoming west in the morning.
Monday Night
Mostly clear, with a low around 11. West wind 5 to 7 mph becoming south southeast in the evening.

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THIS DAY IN WEATHER HISTORY:
2002: Santa Ana winds started on 2/8 and ended on this day. A gust of 80 mph was measured at Descanso, 78 mph at Fremont Canyon and 76 mph in San Bernardino. A fire developed in the Fallbrook area.

2001: Over a week of heavy snow that started on 2/6 and ended on 2/14 continued on this day. 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. The roof of an ice rink caved in at Blue Jay. On this day a waterspout was observed two miles west of La Jolla and a funnel cloud was observed three miles northwest of La Jolla

2000: Heavy rain caused flash flooding and mudslides that killed three and injured eight.

1999: A period of Santa Ana winds began on this day and ended on 2/12. Gusts of 85 mph were measured at Rialto, gusts to 80 mph were reported from Interstate 8, closing it.

1993: Heavy rain that started on 2/7 and ended on this day brought one to five inches of rainfall near the coast, up to ten inches of precipitation to the mountains and 0.5 to 1.5 inches in the deserts. Eight to 18 inches of snow fell in the mountains. Widespread flooding occurred.

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.

1988: Record heat hit the region on this day and on 2/11. The 92° reading at San Juan Capistrano was the nation’s high for the date. It was 90° at Lemon Grove, 88° at LA and Escondido. On 2/11 it was 83° in San Diego, 87° in many locations around San Diego.

1978: An F3 tornado in Huntington Beach injured six and caused $3 million in property damage. This is one of only two F3 tornadoes to have been recorded in California. Another tornado hit El Segundo, hurling trees onto parked cars. Also, power poles were knocked down along a one mile path. A powerful Pacific storm brought coastal winds measured as high as 92 mph. Storm wind damage was severe at area harbors. The Port of Los Angeles was closed for ten hours until debris clogging the port could be cleared. In Oceanside 70 mph winds ripped a bait shop from the municipal pier. Heavy rain that began on 2/8 ended on this day. 16.4 inches fell at Lytle Creek, 13.64 inches at Lake Arrowhead, 11.97 inches in Wrightwood, 11.15 inches in Devore, 10.4 inches at Santiago Peak, 8.5 inches in Crestline, 5 inches in Ontario, 4.79 inches in Big Bear Lake, and 3.83 inches in Santa Ana. 20 were killed all over Southern California, 13 of them in Hidden Springs in the San Gabriel Mountains where a 15 foot wall of water devastated the town. Widespread flooding, flash flooding, and mud slides resulted, and numerous homes washed away.

1976: A heavy rain period that began on 2/4 ended on this day. 4.30 inches of rain fell in San Diego. Strong storm winds hit 64 mph at Palmdale.

1973: Heavy rain that began on this day ended on 2/11. One to two inches of rainfall hit the coast, three to seven inches fell in the coastal valleys, and up to 12 inches fell at Mts. Wilson and Baldy. Six inches in six hours was recorded at Mt. Wilson on 2/11. Flooding and mud slides closed many roads. Strong storm winds started on this day and ended on 2/11. Winds of 57 mph were recorded at Riverside and 46 mph at Newport Beach. Some 200 trees were uprooted in Pacific Beach alone.

1963: A strong winter storm hit the region with heavy rain on 2/9 and ended on 2/11. Many homes and highways were flooded. Slides blocked all mountain highways, some with large boulders. High surf caused damage to coastal homes and structures.
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TROPICAL EAST PACIFIC REPORT:
There are no tropical cyclones in the Eastern North Pacific at this time.

The Eastern North Pacific hurricane season runs from May 15th through November 30th..

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CURRENT WEATHER @ HESP. @ 0725 Hrs. TEMP: 410 RH: 77% WIND: SW 11 G 22
4.83” RF @ HESP. STA.SINCE OCT. 1st/20 Yr Avg: 7.12” : MONTH: 1.41” YTD S/F: 0.00” /
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FIRES: UPDATED

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