WEATHER 3/8/19

DAILY FIRE WEATHER & FIRE INFO
To: ALL UNITS From:
EMAIL: pdupree@bdcecs.org
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AFTER 2200 HRS CALL (760)-244-9790
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COUNTY F.D RADIO: #733784 CALL SIGN: COM-330
Date: 3/8/19

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.:01

National Preparedness Level (PL 1 )

Southern California Area Preparedness Level: (PL 2 )

Northern California Area Preparedness Level (PL 1 )

SYNOP: (NWS SAN DIEGO)
Periods of mostly light showers with lowering snow levels will continue through this evening. There will also be periods of stronger and gusty southwest to west winds in the mountains and
deserts. Saturday will be mostly dry and a little warmer. Another winter weather system will bring widespread showers Sunday through Monday evening.
A few weak disturbances will ripple through the state the next few days. These systems will produce gusty north winds at times along with strong west winds in the desert. Additional rainfall amounts will be light, but some snow may fall at lower elevations Sunday and again next Tuesday. Look for sunny and warmer weather to finally develop by the weekend of the 16th.
· A few showers will be possible near the higher terrain this morning before skies clear everywhere by noon. Look for light rain to redevelop and spread southward Saturday night into Sunday. Rainfall amounts will generally be 0.50” – 1.00” Sunday into Monday morning with locally higher amounts from Orange County southward. The snow level will be as low as 3,500’ by Sunday afternoon.
Temperatures will remain below normal through next Wednesday with highs in the 30s and lower 40s in the mountains to the 60s in the valleys. But highs may surpass the 70 degree mark the following weekend.
· Strong west winds of 20-30 mph with gusts to 50 mph will occur in and near the desert this afternoon and again next Tuesday.
· Locally gusty north winds will be possible tonight and again next Tuesday night across Santa Barbara County and the I-5 Corridor.
· No offshore winds expected through the period.

3 weather systems (Friday #1, Sunday evening into Monday #2, Tuesday into early Wednesday #3) –then dry weather and warming trend

• Snow level 10,000 drops to 7500-8000 feet Wednesday

• Heaviest precipitation Friday morning and Monday

• Precipitation rates 0.10 to 0.20 per hour, heaviest eastern San Bernardino, eastern Riverside and San Diego mountain corridor

• Snow accumulations down to 5000 feet Friday, and down to 4000 feet Monday and possible Tuesday. Snow levels as low as 4000 feet during coldest part of each storm. Some blowing snow over ridges. Snowpackedroads above 5000 feet

• Totals 0.5 to 1.0 inches precipitation on coastal slopes –locally 2 inches for the Friday and Sunday night into Monday combined (heaviest eastern mtns)

• Totals 0.10 to 0.25 inches for valleys (Inland Empire and coast Orange County) for 2 storms

• Totals 0.25 to 0.75 inches for valleys and coast (San Diego County most)

• 0.15 inches or less for deserts

• Next storm on Tuesday is generally 0.2 to 0.5 inches of precipitation with strong mountain and desert winds

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
A week of unsettled weather conditions begins today with showers developing across the north and strong winds in the deserts. A second system will affect the area late Saturday night
through Monday with a third system late Tuesday into Wednesday. Expect on and off chances for precipitation, below normal temperatures and periods of gusty winds through the middle of next
week.

WIND ADVISORY in effect un_l 10 pm PST Today for the western Mojave Desert and Morongo Basin.
WEATHER IMPACTS
San Bernardino County
HIGH Confidence Hazardous driving conditions due to strong crosswinds
Loose or unsecured objects may be blown away

MODERATE Confidence Sudden wind gusts may cause damage to fences or temporary structures
Reduced visibility at times due to blowing sand and dust
Inyo, Esmeralda, Nye, Lincoln, Clark, Mohave Counties
HIGH Confidence Travel could be impacted by slick, snow covered roads on Highways 93, 319 and 322 north and east of Panaca.

FORECAST DETAILS
San Bernardino County
TODAY
West-Southwest wind 25 to 35 mph with gusts 40 to 50 mph.
Winds decreasing late this evening.
OUTLOOK: SUN-WED
The next system will b ring precipiation chances to the High Desert of San Bernardino County Sunday and Monday. This will quickly be followed by another system Tuesday and Wednesday.

Inyo, Esmeralda, Nye, Lincoln, Clark, Mohave Counties
TODAY
Snow amounts ranging from a trace-2 inches northern Inyo, Esmeralda, central Nye and western Lincoln Counties. Highest amounts expected in northeast Lincoln County where 2-5 inches are possible.
OUTLOOK: SUN-WED
The next system will bring precipiaion chances to the southern Great Basin and Mojave Desert Sunday and Monday. This will quickly be followed by another system Tuesday and Wednesday

SPECIAL NOTES: SPRING MELT Hydrologic Outlook INFO AT END OF THE REPORT

DAILY FUELS/FIRE POTENTIAL:

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

————————————————————————————–
APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):
WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PST FRIDAY
TODAY… Sky/weather………Partly cloudy.
Max temperature…..48 to 54. 24 HR TREND……Down 7 degrees.
Min humidity……..30 to 40 percent. 24 HR TREND……Up 10 percent.
WIND (20 FT)……..Winds west 14 to 24 mph with gusts to 45 mph.
CWR (>0.10 IN)……1 percent. LAL……………..1.

.TONIGHT… Sky/weather………Partly cloudy.
Min temperature…..30 to 35. 24 HR TREND……Down 2 degrees.
Max humidity……..75 to 85 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds southwest 12 to 22 mph. Gusts to 45 mph…becoming 35 mph after midnight.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..52 to 58. 24 HR TREND……Up 6 degrees.
Min humidity……..25 to 35 percent. 24 HR TREND……Down 10 percent.
WIND (20 FT)……..Winds southwest 6 to 16 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

WRIGHTWOOD:
WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PST FRIDAY.

WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS THURSDAY TO 10 PM PST FRIDAY
Friday
A slight chance of snow showers. Mostly sunny, with a high near 35. West wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 27. West wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday
Mostly sunny, with a high near 40. Light northwest wind becoming southwest 5 to 10 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 28.

BIG PINES / WEST WRIGHTWOOD AREA
WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THURSDAY TO NOON PST FRIDAY
Friday
A 20 percent chance of snow showers. Partly sunny, with a high near 34. West southwest wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 25. West northwest wind around 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 37. Southwest wind around 10 mph.
Saturday Night
Mostly cloudy, with a low around 26.

PHELAN:
WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PST FRIDAY
Friday
Mostly sunny, with a high near 45. West wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 30. West wind 5 to 15 mph becoming south after midnight. Winds could gust as high as 25 mph.
Saturday
Mostly sunny, with a high near 48. South wind 5 to 10 mph becoming light.
Saturday Night
Partly cloudy, with a low around 31.

TRONA:
WIND ADVISORY REMAINS IN EFFECT FROM 8 AM TO 10 PM PST FRIDAY
Friday
Sunny, with a high near 60. Southwest wind 13 to 17 mph, with gusts as high as 24 mph.
Friday Night
Mostly clear, with a low around 38. West northwest wind 3 to 7 mph.
Saturday
Mostly sunny, with a high near 61. Light west southwest wind becoming south southwest 8 to 13 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 42. Southwest wind 5 to 10 mph becoming west northwest after midnight.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
WIND ADVISORY REMAINS IN EFFECT FROM 8 AM TO 10 PM PST FRIDAY
.TODAY… * Sky/Weather………Mostly sunny.
* Max temperature: * Valley floor….61-66. * 24 hr trend…..On average down 9 degrees.
* Min humidity: * Valley floor….22-32 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….West wind 15 to 25 mph with gusts to around 45 mph.
* 10000 ft msl….West 25 to 35 mph decreasing to 20 to 30 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.TONIGHT… * Sky/Weather………Partly cloudy.
* Min temperature: * Valley floor….32-37. * 24 hr trend…..On average down 5 degrees.
* Max humidity: * Valley floor….66-71 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….West wind 10 to 15 mph with gusts to around 40 mph shifting to the southwest with gusts to around 25 mph after midnight.
* 10000 ft msl….West 15 to 25 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.SATURDAY… * Sky/Weather………Mostly sunny.
* Max temperature: * Valley floor….61-66. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….19-29 percent. * 24 hr trend…..On average down 3 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Southwest wind up to 10 mph with gusts to around 25 mph.
* 10000 ft msl….West 20 to 30 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

BAKER:
Friday
Sunny, with a high near 63. Breezy, with a west southwest wind 16 to 21 mph, with gusts as high as 29 mph.
Friday Night
Mostly clear, with a low around 37. Southwest wind 6 to 10 mph becoming southeast after midnight.
Saturday
Mostly sunny, with a high near 64. South southwest wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 42. South southeast wind 5 to 7 mph.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS:
TODAY… * Sky/Weather………Partly cloudy. Scattered snow showers in the morning.
* Max temperature: * Valley floor….53-58. * 7000 feet…….33-38. * 24 hr trend…..On average down 8 degrees.
* Min humidity: * Valley floor….20-29 percent. * 7000 feet…….33-43 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….West winds 10 to 15 mph with gusts to around 30 mph.
* Upper slopes….West winds 15 to 25 mph with gusts to around 45 mph.
* 10000 ft msl….Northwest 10 to 15 mph.
* CWR (>= 0.10 in)….5 percent. * LAL……………..1.
* Haines Index……..4.

.TONIGHT… * Sky/Weather………Partly cloudy.
* Min temperature: * Valley floor….28-33. * 7000 feet..3 below to 2 above zero. * 24 hr trend…..On average down 6 degrees.
* Max humidity:
* Valley floor….51-56 percent. * 7000 feet…….58-63 percent. * 24 hr trend…..On average down 12 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….West winds up to 10 mph with gusts to around 25 mph in the evening becoming downslope/downvalley 2 to 5 mph.
* Upper slopes….West winds 10 to 15 mph with gusts to around 40 mph.
* 10000 ft msl….Northwest 10 to 15 mph becoming west after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.SATURDAY… * Sky/Weather………Mostly sunny then becoming partly cloudy.
* Max temperature: * Valley floor….54-59. * 7000 feet…….33-38. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….21-29 percent. * 7000 feet…….34-44 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming south around 10 mph with gusts to around 25 mph in the afternoon.
* Upper slopes….Southwest winds 10 to 15 mph with gusts to around 35 mph.
* 10000 ft msl….Southwest 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..3.

INLAND EMPIRE (CAZ248):
.TODAY… Sky/weather………Cloudy…becoming partly cloudy. Chance of showers in the morning, then slight chance of showers in the afternoon.
Max temperature…..49 to 58. 24 HR TREND……Down 5 degrees.
Min humidity……..45 to 55 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds west 6 to 13 mph with gusts to 30 mph.
CWR (>0.10 IN)……8 percent. LAL……………..1.

.TONIGHT… Sky/weather………Partly cloudy.
Min temperature…..35 to 42. 24 HR TREND……Down 2 degrees.
Max humidity……..80 to 90 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds south 6 to 12 mph. Gusts to 25 mph in the evening.
CWR (>0.10 IN)……4 percent. LAL……………..1.

.SATURDAY… Sky/weather………Partly cloudy.
Max temperature…..52 to 60. 24 HR TREND……Up 2 degrees.
Min humidity……..40 to 50 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds southwest 6 to 11 mph. Gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……3 percent. LAL……………..1.

DEVORE:
Friday
A slight chance of showers. Partly sunny, with a high near 52. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 39. Calm wind becoming east around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 54. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 40.

CHINO HILLS:
Friday
A slight chance of showers before 10am. Partly sunny, with a high near 56. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 39. Southwest wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Mostly sunny, with a high near 57. East wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 41.

COLTON:
Friday
A chance of showers, mainly before 10am. Partly sunny, with a high near 55. Southwest wind 5 to 10 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.
Friday Night
Partly cloudy, with a low around 42. South wind around 5 mph becoming southeast in the evening.
Saturday
Mostly sunny, with a high near 59. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 42.

SAN BERNARDINO N.F. (CAZ255/CAZ256):
WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PST FRIDAY.
WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS THURSDAY TO 10 PM PST FRIDAY
.TODAY… Sky/weather………Mostly cloudy. Patchy fog. Chance of snow showers in the morning. Chance of showers in the afternoon.
Max temperature…..30 to 40 above 6000 feet to 34 to 44 below 6000 feet. 24 HR TREND……Down 8 degrees.
Min humidity……..25 to 35 percent on desert slopes to 55 to 65 percent on coastal slopes.
24 HR TREND……Down 10 percent.
WIND (20 FT)……..
SLOPES………..Winds west 18 to 28 mph with gusts to 50 mph.
RIDGETOP………Winds west 25 to 35 mph with gusts to 65 mph.
CWR (>0.10 IN)……16 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly cloudy…becoming partly cloudy. Patchy fog in the evening. Slight chance of snow showers in the evening.
Min temperature…..13 to 23 above 6000 feet to 19 to 29 below 6000 feet. 24 HR TREND……Down 3 degrees.
Max humidity….60 to 70 percent on desert slopes to 90 to 100 percent on coastal slopes. 24 HR TREND…Little change.
WIND (20 FT)……..
SLOPES………..Winds west 12 to 22 mph. Gusts to 45 mph…becoming 35 mph after midnight.
RIDGETOP………Winds west 16 to 26 mph. Gusts to 50 mph…becoming 35 mph after midnight.
CWR (>0.10 IN)……3 percent. LAL……………..1.

.SATURDAY… Sky/weather………Partly cloudy.
Max temperature…..34 to 43 above 6000 feet to 43 to 53 below 6000 feet. 24 HR TREND……Up 5 degrees.
Min humidity……..30 to 40 percent on desert slopes to 40 to 50 percent on coastal slopes.
24 HR TREND……Down 35 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 14 mph with gusts to 30 mph.
RIDGETOP………Winds west 6 to 11 mph with gusts to 25 mph.
CWR (>0.10 IN)……2 percent. LAL……………..1.

LAKE ARROWHEAD SCHOOL- AREA:
WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PST FRIDAY.
WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THUSDAY TO 10 PM PST FRIDAY
Friday
A chance of snow showers, mainly before 4pm. Patchy fog. Otherwise, partly sunny, with a high near 36. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of 1 to 2 inches possible.
Friday Night
A slight chance of snow showers before 10pm. Patchy fog before 10pm. Otherwise, partly cloudy, with a low around 25. South wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 41. South wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 27.

BIG BEAR SCHOOL AREA:
WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PST FRIDAY.
WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THURSDAY TO 10 PM PST FRIDAY
Friday
A chance of snow showers, mainly before 10am. Partly sunny, with a high near 31. Breezy, with a southwest wind around 25 mph, with gusts as high as 40 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.
Friday Night
Partly cloudy, with a low around 19. Southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Saturday
Mostly sunny, with a high near 39. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 21.

BANNING PASS:
TODAY… Sky/weather………Partly cloudy…becoming mostly sunny. Slight chance of showers in the morning.
Max temperature…..64 to 69. 24 HR TREND……Down 9 degrees.
Min humidity……..20 to 30 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Winds west 20 to 30 mph with gusts to 55 mph.
CWR (>0.10 IN)……4 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..41 to 47. 24 HR TREND……Down 4 degrees.
Max humidity……..50 to 60 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Winds west 17 to 27 mph. Gusts to 50 mph…becoming 40 mph after midnight.
CWR (>0.10 IN)……1 percent. LAL……………..1.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..64 to 69. 24 HR TREND……Up 4 degrees.
Min humidity……..25 to 30 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Winds west 7 to 17 mph with gusts to 35 mph.
CWR (>0.10 IN)……1 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ261):
TODAY… * Sky/weather…………………Mostly sunny.
* Max Temperature……………..47-62. * 24 hr trend………………8 degrees cooler.
* Min Humidity………………..26-48 pct. * 24 hr trend………………Little RH change.
* Winds – 20 foot…Slope/Valley..West 15 to 25 mph.
* Winds…10000 FT MSL…………West 35 to 45 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………3 or very low potential for large plume dominated fire growth.

.TONIGHT… * Sky/weather…………………Mostly clear.
* Min Temperature……………..32-40. * 24 hr trend………………4 degrees cooler.
* Max Humidity………………..65-82 pct. * 24 hr trend………………4 pct wetter.
* Winds – 20 foot…Slope/Valley..West 10 to 20 mph.
* Winds…10000 FT MSL…………West 20 to 30 mph.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.

.SATURDAY… * Sky/weather…………………Mostly sunny.
* Max Temperature……………..50-63. * 24 hr trend………………Little change.
* Min Humidity………………..26-38 pct. * 24 hr trend………………4 pct drier.
* Winds – 20 foot…Slope/Valley..South 5 to 15 mph.
* Winds…10000 FT MSL…………Southwest 15 to 25 mph.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.
* Haines High Level Index………4 or low potential for large plume dominated fire growth.

NEEDLES, RIVER BAT. (CAZ229):
.TODAY… * Sky/Weather………Mostly sunny.
* Max temperature: * Valley floor….63-68. * 24 hr trend…..On average down 11 degrees.
* Min humidity: * Valley floor….20-30 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Southwest wind 10 to 15 mph.
* 10000 ft msl….Southwest 30 to 40 mph becoming west 15 to 25 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..3.
* Mixing height…….11400 ft agl.
* Transport winds…..Southwest 10 to 15 knots.
* Ventilation………Excellent.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….39-44. * 24 hr trend…..On average down 6 degrees.
* Max humidity: * Valley floor….55-60 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Southwest wind up to 10 mph in the evening becoming downslope/downvalley 2 to 5 mph.
* 10000 ft msl….Southwest 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.SATURDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….64-69. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….18-26 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 south around 10 mph in the afternoon.
* 10000 ft msl….Southwest 15 to 25 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.
* Mixing height…….7300 ft agl.
* Transport winds…..South 10 to 15 knots.
* Ventilation………Excellent.

STATELINE – CLARK COUNTY BORDER:
.TODAY… * Sky/Weather………Partly cloudy. Scattered snow showers and isolated rain showers in the morning with scattered rain showers in the afternoon.
* Max temperature: * 4000 feet…….57-62. * 24 hr trend…..On average down 9 degrees.
* Min humidity: * 4000 feet…….27-37 percent. * 24 hr trend…..On average up 5 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Southwest winds 10 to 15 mph. Gusts up to 35 mph in the morning.
* 10000 ft msl….West 20 to 30 mph becoming northwest 15 to 25 mph in the afternoon.
* CWR (>= 0.10 in)….10 percent. * LAL……………..1.
* Haines Index……..3.
* Mixing height…….9700 ft agl.
* Transport winds…..West 10 to 15 knots.
* Ventilation………Excellent.

.TONIGHT… * Sky/Weather………Partly cloudy.
* Min temperature: * 4000 feet…….33-38. * 24 hr trend…..On average down 4 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….Southwest winds up to 10 mph with gusts to around 25 mph in the evening becoming downslope/downvalley 2 to 5 mph.
* 10000 ft msl….West 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.SATURDAY… * Sky/Weather………Mostly sunny.
* Max temperature: * 4000 feet…….59-64. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * 4000 feet…….21-31 percent. * 24 hr trend…..On average down 6 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.
* 10000 ft msl….Southwest 10 to 20 mph increasing to 15 to 25 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..3.
* Mixing height…….7400 ft agl.
* Transport winds…..Light winds.
* Ventilation………Good.

*************************** OUT OF COUNTY ********************************
COOL AND UNSETTLED WEATHER THROUGH THE WEEKEND
LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ247/CAZ249),
LOS ANGELES COUNTY SAN FERNANDO VALLEY:
.FRIDAY… Sky/weather………Mostly cloudy then becoming partly cloudy.
Max temperature…..53-61. 24 hr trend……Down 3.
Min humidity……..40-60 percent. 24 hr trend……Down 5-10.
20-foot winds…….Variable 3-6 mph becoming southeast to southwest 6-12 mph with local gusts to 20 mph in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.FRIDAY NIGHT… Sky/weather………Partly cloudy then becoming mostly clear.
Min temperature…..40-46.
Max humidity……..75-95 percent.
20-foot winds…….Southeast to southwest 6-12 mph with local gusts to 20 mph in the evening becoming north 5-10 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..55-62.
Min humidity……..35-50 percent.
20-foot winds…….North to northeast 5-15 mph becoming southeast to southwest 6-12 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SANTA CLARITA VALLEY:
FRIDAY… Sky/weather………Partly cloudy.
Max temperature…..51-57. 24 hr trend……Down 3.
Min humidity……..45-55 percent. 24 hr trend……Down 5-10.
20-foot winds…….Southwest to west 5-15 mph with gusts to 20 mph.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.FRIDAY NIGHT… Sky/weather………Partly cloudy then becoming mostly clear.
Min temperature…..36-40.
Max humidity……..75-95 percent.
20-foot winds…….Northwest to north 8-15 mph with gusts to 25 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..53-57.
Min humidity……..40-50 percent.
20-foot winds…….Northwest to north 8-15 mph with gusts to 25 mph becoming south to southwest 6-12 mph with gusts to 20 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SANTA MONICA MOUNTAINS RECREATIONAL AREA:
.FRIDAY… Sky/weather………Partly cloudy.
Max temperature…..50-60. 24 hr trend……Little change.
Min humidity……..45-60 percent. 24 hr trend……Down 5-10.
20-foot winds…….
Valleys/lwr slopes…Southwest to west 15-25 mph with local gusts to 35 mph.
Ridges/upr slopes….West 15-25 mph with local gusts to 35 mph.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.FRIDAY NIGHT… Sky/weather………Partly cloudy then becoming mostly clear.
Min temperature…..39-47.
Max humidity……..65-85 percent.
20-foot winds…….
Valleys/lwr slopes…Southwest to west 15-25 mph with local gusts in the evening becoming north 5-15 mph.
Ridges/upr slopes….West 15-25 mph with local gusts to 35 mph in the evening becoming north 5-15 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..50-60.
Min humidity……..45-60 percent.
20-foot winds…….
Valleys/lwr slopes…North to northeast 5-15 mph becoming south to southwest 8-15 mph with local gusts to 25 mph.
Ridges/upr slopes….North to northeast 5-15 mph becoming southwest 8-15 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANGELES NATIONAL FOREST (CAZ253):
WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THURSDAY TO NOON PST FRIDAY
.FRIDAY… Sky/weather………Mostly cloudy then becoming partly cloudy. Slight chance of rain and snow showers.
Max temperature…..43-53 low elevations to 33-43 higher elevations. 24 hr trend……Down 3-5.
Min humidity……..70-90 percent except 50-60 percent higher peaks and warmer valleys. 24 hr trend……Little change.
20-foot winds…….
Valleys/lwr slopes…Southwest 10-20 mph with gusts to 25 mph becoming west 15-25 mph with local gusts to 35 mph in the afternoon.
Ridges/upr slopes….West 15-25 mph with gusts to 35 mph.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……10 percent.

.FRIDAY NIGHT… Sky/weather………Partly cloudy then becoming mostly clear.
Min temperature…..32-39 low elevations to 23-32 colder valleys and peaks.
Max humidity……..75-95 percent.
20-foot winds…….
Valleys/lwr slopes…West to northwest 15-25 mph with gusts to 35 mph. Strongest through the I-5 Corridor.
Ridges/upr slopes….West 15-25 mph with gusts to 35 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..46-55 low elevations to 36-46 higher elevations.
Min humidity……..55-75 percent except 45-55 percent higher peaks and warmer valleys.
20-foot winds…….
Valleys/lwr slopes…North to northwest 15-25 mph with gusts to 35 mph becoming south to southwest 10-20 mph with gusts to 25 mph in the afternoon.Strongest through the I-5 Corridor.
Ridges/upr slopes….West to northwest 10-20 mph with gusts to 25 mph becoming southwest in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANTELOPE VALLEY (CAZ259):
.FRIDAY… Sky/weather………Partly cloudy. Slight chance of showers in the afternoon.
Max temperature…..43-53. 24 hr trend……Down 4-8.
Min humidity……..35-50 percent except 50-70 percent in the hills. 24 hr trend……Down 5-10.
20-foot winds…….Southwest 15-25 mph with gusts to 35 mph becoming west 20-30 mph with gusts to 45 mph in the afternoon. Isolated gusts to 55 mph near Lake Palmdale.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.FRIDAY NIGHT… Sky/weather………Partly cloudy then becoming mostly clear.
Min temperature…..29-35.
Max humidity……..75-95 percent.
20-foot winds…….West 20-30 mph with gusts to 45 mph in the evening becoming 15-25 mph with local gusts to 35 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..46-56.
Min humidity……..30-45 percent except 45-55 percent in the hills.
20-foot winds…….West 10-20 mph with local gusts to 30 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

KERN CO. DESERTS (CAZ298):
.FRIDAY… Sky/weather………Sunny.
Max Temperature…..47-52. 24 HR Trend……Down 3-9 degrees.
Min Humidity……..49-59 percent. 24 HR Trend……Up 1-3 percent.
20-Foot Winds…….West 7-19 mph in the early morning increasing to 14-24 mph by afternoon.
LAL……………..1.
Ventilation………Excellent.
Mixing height…….6200 ft AGL.
Transport Winds…..West 25 to 30 mph.
Chc Wetting Rain….0 percent.

.FRIDAY NIGHT… Sky/weather………Mostly clear.
Min Temperature…..31-36. 24 HR Trend……Down 2-8 degrees.
Max Humidity……..75-85 percent. 24 HR Trend……Down 2-4 percent.
20-Foot Winds…….West 8-18 mph in the early evening decreasing to 5-11 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.SATURDAY… Sky/weather………Sunny.
Max Temperature…..50-55. 24 HR Trend……Up 2-4 degrees.
Min Humidity……..40-50 percent. 24 HR Trend……Down 5-11 percent.
20-Foot Winds…….West 3-7 mph in the early morning increasing to 9-14 mph by afternoon.
LAL……………..1.
Ventilation………Excellent.
Mixing height…….6200 ft AGL.
Transport Winds…..West 15 to 20 mph.
Chc Wetting Rain….0 percent.

La Jolla CA
Friday
A chance of showers. Mostly cloudy, with a high near 55. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 48. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 57. West wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 48. West wind 5 to 10 mph. Chance of precipitation is 20%.

Poway CA
Friday
A chance of showers. Mostly cloudy, with a high near 56. West wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 43. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 58. Light and variable wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 42. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 20%.

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

Accumulating snow is expected for northern Utah mountains and valleys as well as the mountains of central Utah. Expect widespread winter driving conditions for mountain routes, with accumulating snow possible during the Friday evening commute, mainly north of Ogden. Winter driving conditions will remain possible area wide into late Friday and early Saturday.

Friday
Snow showers. High near 41. South southwest wind 17 to 20 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday Night
A 30 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 24. West southwest wind 9 to 14 mph becoming light southwest after midnight. New snow accumulation of less than a half inch possible.
Saturday
Partly sunny, with a high near 43. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Saturday Night
A 30 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 27. Southwest wind 5 to 9 mph becoming light south southeast in the evening. New snow accumulation of less than a half inch possible.

============================================================
THIS DAY IN WEATHER HISTORY:
2016: Choppy seas and gale force winds impacted the waters of the Southern California Bight. At the beaches surf heights reached 12 feet. Beach erosion was widespread along the coast, compounding erosion issues from earlier in the season. A portion of the Ocean Beach Pier was also damaged.

1968: Heavy rain that began on 3/6 ended on this day. Flooding damaged homes, schools, and several commercial buildings in Ontario and Chino. Winds downed trees, damaged utility lines, unroofed buildings and disrupted traffic. Debris flows closed several local highways. One drowning death resulted.

1952: 2.40 inches of rain fell in San Diego starting on 3/7 and ending on this day, the greatest 24-hour amount on record for March
==================================================================
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..

======================================================================
CURRENT WEATHER @ HESP. @ 0700 Hrs. TEMP: 390 RH: 80% WIND: NW 4 G 11
6.72” RF @ HESP. STA.SINCE OCT. 1st/20 Yr Avg: 7.12” : MONTH: 0.57” YTD S/F: 1.00” /

Hydrologic Outlook
Hydrologic Outlook
CAC001>115-081930-

Hydrologic Outlook
National Weather Service Sacramento CA
1118 AM PST Thu Mar 7 2019

…ELEVATED FLOOD THREAT DUE TO SPRING SNOWMELT ACROSS PORTIONS OF
CALIFORNIA…

THE POTENTIAL FOR FLOODING DUE TO SPRING SNOWMELT IN THE CALIFORNIA
NEVADA RIVER FORECAST CENTER`S DOMAIN IS ELEVATED DUE TO ABOVE
NORMAL SNOWPACK. IN CALIFORNIA, THIS ELEVATED RISK IS FOR MANY
LOCATIONS IN THE MOUNTAINOUS AREAS OF THE CASCADES AND THE SIERRA
NEVADA. SOME OF THE LOWER ELEVATION REGULATED SYSTEMS, LIKE THE SAN
JOAQUIN RIVER AND ITS TRIBUTARIES, WILL LIKELY BE UNDER ADDITIONAL
STRESS THROUGHOUT THE SPRING DUE TO HIGHER THAN NORMAL RELEASES FROM
THE LARGE RESERVOIRS AS THEY MANAGE INFLOWS FROM THE ABOVE NORMAL
SNOWMELT VOLUMES. FLOWS ARE EXPECTED TO REMAIN ABOVE NORMAL IN THE
SAN JOAQUIN SYSTEM WELL INTO THE SNOWMELT SEASON, PUTTING CONTINUOUS
STRESS ON THE FLOOD CONVEYANCE SYSTEM.

NOTE THAT FLOODING IN CALIFORNIA COULD ALSO RESULT FROM HEAVY
RAINFALL ALONE, OR COMBINED WITH SNOWMELT ANYTIME DURING THE SPRING.

CURRENT BASIN CONDITIONS

SNOWPACK

EVERYWHERE FROM THE NORTHERN PORTIONS OF IN THE KLAMATH BASIN DOWN
TO THE TULARE BASIN IN THE SOUTHERN SIERRA NEVADA IS EXPERIENCING
ABOVE AVERAGE SNOWPACK. PERCENT OF NORMAL NUMBERS ARE FAIRLY
SIMILAR THROUGHOUT THIS REGION.

SEASONAL PRECIPITATION

PRECIPITATION TOTALS FOR THE CURRENT WATER YEAR ARE ABOVE NORMAL TO
MUCH ABOVE NORMAL FOR THE ENTIRE STATE OF CALIFORNIA. THE WATER
YEAR ACCUMULATIONS STARTED OFF FAIRLY DRY, BUT THE PRODUCTIVE MONTHS
OF JANUARY AND FEBRUARY HAVE PUSHED WATER YEAR TOTALS TO ABOVE
AVERAGE THROUGHOUT CALIFORNIA.

SEASONAL (APRIL-JULY) RUNOFF FORECASTS

THE SEASONAL RUNOFF FORECASTS ARE VERY SIMILAR TO THE SNOWPACK
CONDITIONS. ABOVE NORMAL TO MUCH ABOVE NORMAL RUNOFF VOLUMES CAN BE
EXPECTED DURING THE APRIL-JULY PERIOD THROUGHOUT THE CASCADES AND
SIERRA NEVADA.

FLOOD EXCEEDANCE PROBABILITIES

FLOODING DURING THE SPRING SNOWMELT SEASON IS DEFINITELY MORE
PROBABLE THIS YEAR DUE TO THE ABOVE NORMAL SNOWPACK. CONSULT THE
AHPS LONG RANGE FLOOD RISK MAP FOR THE LATEST POINT EXCEEDANCE
PROBABILITIES: HTTP://WATER.WEATHER.GOV/AHPS/LONG_RANGE.PHP.

SUMMARY

RISK OF CALIFORNIA FLOODING DURING THE SNOWMELT SEASON IS ELEVATED
THIS YEAR FOR MUCH OF THE CASCADES AND SIERRA NEVADA. FLOOD
CONVEYANCE SYSTEMS BELOW MAJOR RESERVOIRS IN THE SAN JOAQUIN WILL
BE UNDER ADDITIONAL STRESS THROUGHOUT THE SPRING. FLOODING
ANYWHERE IN THE STATE COULD ALSO RESULT FROM HEAVY RAINFALL, OR
THE COMBINATION OF RAIN AND SNOWMELT AT ANY TIME DURING THE
SPRING. REFER TO THE LONG RANGE OUTLOOK PRODUCT FOR FLOOD
EXCEEDANCE PROBABILITIES AT PARTICULAR LOCATIONS FOR THE MARCH
THROUGH MAY PERIOD. FOR SHORT TERM HYDROLOGIC FORECASTS AND
GENERAL WATER RESOURCE INFORMATION, PLEASE SEE THE CNRFC HOMEPAGE
AT: HTTP://WWW.CNRFC.NOAA.GOV.

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