WEATHER 12/4/18

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: 12/4/18

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.:05

National Preparedness Level (PL 1 )

Southern California Area
Preparedness Level: (PL 2 )

Northern California Area
Preparedness Level (PL 1 )

SYNOP:
Dry weather will continue today with periods of weak east winds near the coastal slopes of the mountains. A low pressure system will generate periods of wetting precipitation over the area
Wednesday through early Friday, with dry weather next weekend.

Rainfall amounts for Wednesday through Thursday night…
Coast………1.5 to 2 inches
Valleys…….1 to 1.5 inches
Mountains…..1 to 1.5 inches (locally 2 to 3 inches on south
facing slopes)
High Desert…0.5 to 0.75 inch
Low Desert….0.25 to 0.50 inch

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
Increasing cloud cover is expected today along with increasing rain and higher elevation snow chances in the Sierra. Scattered showers will spread southeastward Wednesday and
Thursday, with the best rain chances across southeast California, Clark County, and Mohave County on Thursday. Isolated showers will taper off Friday as the low pressure system moves east and
high pressure moves in from the west.

DAILY FUELS/FIRE POTENTIAL:
There will be little or no fire activity across the region through the forecast period due to moist fuels from previous and upcoming wetting rains

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

NO RATING: Sundowner winds are either not expected, or will not contribute to
significant fire activity.

MARGINAL: Upon ignition, fires may grow rapidly.

MODERATE: Upon ignition, fires will grow rapidly and will be difficult to control.

HIGH: Upon ignition, fires will grow very rapidly, will burn intensely, and will be very difficult to control

EXTREME: Upon ignition, fires will have extreme growth, will burn very intensely, and will be uncontrollable.

Zones NOV.29 NOV. 30 DEC.1 DEC. 2 DEC. 3 DEC. 4
Zone 1:
LA-Ventura NO RATE NO RATE NO RATE NO RATE NO RATE NO RATE
Zone 2:
Orange-Inland Empire NO RATE NO RATE NO RATE NO RATE NO RATE NO RATE
Zone 3:
San Diego NO RATE NO RATE NO RATE NO RATE NO RATE NO RATE
Zone 4:
Santa Barbara NO RATE NO RATE NO RATE NO RATE NO RATE NO RATE

—————————————————————-
APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):
.TUESDAY… Sky/weather………Partly cloudy…becoming mostly sunny. Patchy frost in the morning.
Max temperature…..54 to 59. 24 HR TREND……Up 3 degrees.
Min humidity……..15 to 20 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds east 6 to 13 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY NIGHT… Sky/weather………Partly cloudy.
Min temperature…..33 to 38. 24 HR TREND……Up 2 degrees.
Max humidity……..35 to 45 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds east 6 to 12 mph with gusts to 25 mph.
CWR (>0.10 IN)……1 percent. LAL……………..1.

.WEDNESDAY… Sky/weather………Mostly cloudy. Chance of rain in the morning, then rain likely in the afternoon.
Max temperature…..53 to 58. 24 HR TREND……Down 1 degree.
Min humidity……..25 to 30 percent. 24 HR TREND……Up 10 percent.
WIND (20 FT)……..Winds south 6 to 11 mph. Gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……48 percent. LAL……………..1.

WRIGHTWOOD:
Tuesday
Mostly sunny, with a high near 47. Southeast wind 5 to 10 mph.
Tuesday Night
Snow likely, mainly after 4am. Mostly cloudy, with a low around 33. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
Snow likely before 10am, then snow, possibly mixed with rain. High near 44. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
Rain likely before 10pm, then showers likely after 10pm. Mostly cloudy, with a low around 33. Windy, with a south wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

BIG PINES / WEST WRIGHTWOOD AREA
WIND ADVISORY NOW IN EFFECT UNTIL 3 PM PST THIS AFTERNOON
Tuesday
Mostly sunny, with a high near 49. Southeast wind around 10 mph.
Tuesday Night
Snow showers likely, mainly after 4am. Mostly cloudy, with a low around 32. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
Snow showers likely before 10am, then rain showers likely. Cloudy, with a high near 44. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Showers. Low around 30. Southeast wind 10 to 15 mph becoming east northeast in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

PHELAN:
Tuesday
Mostly sunny, with a high near 56. Light east wind becoming southeast 5 to 10 mph in the morning.
Tuesday Night
A chance of rain after 4am. Mostly cloudy, with a low around 38. South wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 51. South wind 5 to 10 mph increasing to 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 tenth and quarter of an inch possible.
Wednesday Night
Rain likely before 10pm, then showers likely after 10pm. Mostly cloudy, with a low around 38. Southeast wind 15 to 20 mph becoming light and variable. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

TRONA:
Tuesday
Mostly sunny, with a high near 60. East northeast wind 3 to 7 mph.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 37. Light north wind.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 59. Light north wind.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 40. North northeast wind 3 to 5 mph.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
.TODAY… * Sky/Weather………Mostly sunny.
* Max temperature: * Valley floor….61-66. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * Valley floor….14-19 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….East wind 10 to 15 mph.
* 10000 ft msl….Southwest 20 to 25 mph becoming 15 to 25 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.TONIGHT… * Sky/Weather………Partly cloudy then becoming mostly cloudy.
* Min temperature: * Valley floor….33-38. * 24 hr trend…..On average up 2 degrees.
* Max humidity: * Valley floor….38-43 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….East wind up to 10 mph.
* 10000 ft msl….Southwest 20 to 30 mph increasing to south 25 to 35 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.WEDNESDAY… * Sky/Weather………Partly cloudy then becoming mostly cloudy. Isolated rain showers and snow showers in the morning. Scattered showers in the afternoon.
* Max temperature: * Valley floor….58-63. 24 hr trend…..On average down 3 degrees.
* Min humidity: * Valley floor….18-28 percent. * 24 hr trend…..On average up 6 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….South 30 to 35 mph shifting to the southwest 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….5 percent increasing to 20 percent in the afternoon. * LAL……………..1.
* Haines Index……..5.

BAKER:
Tuesday
Mostly sunny, with a high near 65. North wind 3 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 36. North wind 3 to 5 mph.
Wednesday
A 20 percent chance of showers after 10am. Mostly cloudy, with a high near 61. Calm wind becoming north northeast around 5 mph.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 39. Light northeast wind.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS:
.TODAY… * Sky/Weather………Partly cloudy. Isolated snow showers.
* Max temperature: * Valley floor….51-56. * 7000 feet…….36-41. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….22-32 percent. * 7000 feet…….42-52 percent. * 24 hr trend…..On average up 2 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming southeast up to 10 mph in the afternoon.
* Upper slopes….Southwest winds 10 to 15 mph with gusts to around 30 mph.
* 10000 ft msl….Southwest 15 to 20 mph shifting to the south 15 to 25 mph in the afternoon.
* CWR (>= 0.10 in)….5 percent. * LAL……………..1.
* Haines Index……..3.

.TONIGHT… * Sky/Weather………Mostly cloudy with isolated showers in the evening. Scattered snow showers through the night. Scattered showers after midnight.
* Min temperature: * Valley floor….27-32. * 7000 feet…….10-15. * 24 hr trend…..Little change.
* Max humidity: * Valley floor….57-62 percent. * 7000 feet…….80-85 percent. *24 hr trend…..On average up 9 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….South winds up to 10 mph.
* Upper slopes….Southwest winds 10 to 15 mph.
* 10000 ft msl….South 20 to 30 mph increasing to 25 to 35 mph after midnight.
* CWR (>= 0.10 in)….20 percent increasing to 35 percent after midnight.
* LAL……………..1.
* Haines Index……..4.

.WEDNESDAY… * Sky/Weather………Partly cloudy then becoming mostly cloudy. Scattered snow showers in the morning. Scattered rain showers through the day. Snow showers likely in the afternoon.
* Max temperature: * Valley floor….49-54. * 7000 feet…….35-40. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….35-45 percent. *7000 feet…….56-66 percent. 24 hr trend…..On average up 14 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph.
* Upper slopes….Southwest winds around 10 mph shifting to the southeast in the afternoon. Gusts up to 25 mph.
* 10000 ft msl….South 20 to 30 mph decreasing to 15 to 25 mph in the afternoon.
* CWR (>= 0.10 in)….40 percent increasing to 50 percent in the afternoon. * LAL……………..1.
* Haines Index……..3.

INLAND EMPIRE (CAZ248):
.TUESDAY… Sky/weather………Partly cloudy…becoming mostly sunny.
Max temperature…..63 to 72. 24 HR TREND……Up 4 degrees.
Min humidity……..15 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Winds east 6 to 15 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY NIGHT… Sky/weather………Partly cloudy.
Min temperature…..40 to 49. 24 HR TREND……Up 1 degree.
Max humidity……..50 to 60 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Winds east 6 to 11 mph with gusts to 25 mph.
CWR (>0.10 IN)……2 percent. LAL……………..1.

.WEDNESDAY… Sky/weather………Mostly cloudy. Chance of rain in the morning, then rain in the afternoon.
Max temperature…..57 to 63. 24 HR TREND……Down 7 degrees.
Min humidity……..35 to 45 percent. 24 HR TREND……Up 25 percent.
WIND (20 FT)……..Winds southeast 6 to 11 mph with gusts to 20 mph.
CWR (>0.10 IN)……83 percent. LAL……………..1.

DEVORE:
Tuesday
Mostly sunny, with a high near 66. North wind 15 to 20 mph becoming light and variable in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Rain likely after 4am. Mostly cloudy, with a low around 48. West wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain. High near 58. North wind 5 to 10 mph becoming light and variable in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain before 10pm, then showers likely after 10pm. The rain could be heavy at times. Low around 49. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

CHINO HILLS:
Tuesday
Mostly sunny, with a high near 68. East wind 5 to 15 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Rain likely after 4am. Mostly cloudy, with a low around 48. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain. High near 60. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain before 10pm, then showers, mainly after 10pm. The rain could be heavy at times. Low around 50. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

COLTON:
Tuesday
Mostly sunny, with a high near 70. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
A chance of rain after 4am. Mostly cloudy, with a low around 48. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly after 10am. High near 63. Light east wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain before 10pm, then showers likely after 10pm. Low around 50. Calm wind becoming northwest around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

SAN BERNARDINO N.F. (CAZ255/CAZ256):
.TUESDAY… Sky/weather………Partly cloudy…becoming mostly sunny.
Max temperature…..44 to 54 above 6000 feet to 48 to 56 below 6000 feet. 24 HR TREND…Up 6 degrees.
Min humidity……..15 to 20 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds east 6 to 14 mph with gusts to 30 mph.
RIDGETOP………Winds south 6 to 13 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY NIGHT… Sky/weather………Partly cloudy.
Min temperature…..24 to 33 above 6000 feet to 32 to 39 below 6000 feet. 24 HR TREND……Up 5 degrees.
Max humidity…30 to 40 percent on desert slopes to 40 to 50 percent on coastal slopes. 24 HR TREND…Up 10 percent.
WIND (20 FT)……..
SLOPES………..Winds south 6 to 11 mph with gusts to 25 mph.
RIDGETOP………Winds south 8 to 18 mph with gusts to 35 mph.
CWR (>0.10 IN)……3 percent. LAL……………..1.

.WEDNESDAY… Sky/weather………Partly cloudy…becoming cloudy. Chance of rain and snow in the morning, then rain and snow likely in the afternoon.
Max temperature…..37 to 47 above 6000 feet to 43 to 50 below 6000 feet. 24 HR TREND……Down 5 degrees.
Min humidity…25 to 30 percent on desert slopes to 30 to 40 percent on coastal slopes. 24 HR TREND…Up 15 percent.
WIND (20 FT)……..
SLOPES………..Winds south 6 to 13 mph. Gusts to 30 mph.
RIDGETOP………Winds southwest 6 to 15 mph with gusts to 30 mph.
CWR (>0.10 IN)……67 percent. LAL……………..1.

LAKE ARROWHEAD SCHOOL- AREA:
Tuesday
Mostly sunny, with a high near 55. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of rain and snow after 4am. Partly cloudy, with a low around 35. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday
A chance of rain and snow before 10am, then rain. High near 47. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
Rain likely before 10pm, then showers likely after 10pm. Mostly cloudy, with a low around 35. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

BIG BEAR SCHOOL AREA:
Tuesday
Mostly sunny, with a high near 47. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of snow after 4am. Partly cloudy, with a low around 25. South wind 5 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Wednesday
Snow likely before 4pm, then rain and snow likely. Mostly cloudy, with a high near 42. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Rain and snow showers likely. Mostly cloudy, with a low around 25. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

BANNING PASS:
.TUESDAY… Sky/weather………Partly cloudy…becoming mostly sunny.
Max temperature…..Around 61. 24 HR TREND……Up 1 degree.
Min humidity……..15 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TUESDAY NIGHT… Sky/weather………Partly cloudy.
Min temperature…..41 to 51. 24 HR TREND……Up 3 degrees.
Max humidity……..25 to 35 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.WEDNESDAY… Sky/weather………Partly cloudy…becoming mostly cloudy. Slight chance of rain in the afternoon.
Max temperature…..65 to 70. 24 HR TREND……Up 1 degree.
Min humidity……..20 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Variable 1 to 3 mph.
CWR (>0.10 IN)……13 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ261):
. TODAY… * Sky/weather…………………Partly sunny.
* Max Temperature……………..51-62. * 24 hr trend………………3 degrees warmer.
* Min Humidity………………..17-22 pct. * 24 hr trend………………4 pct drier.
* Winds – 20 foot…Slope/Valley..East 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.

.TONIGHT… * Sky/weather…………………Mostly clear.
* Min Temperature……………..35-41. * 24 hr trend………………Little change.
* Max Humidity………………..33-48 pct. * 24 hr trend………………3 pct drier.
* Winds – 20 foot…Slope/Valley..South 5 to 15 mph.
* Winds…10000 FT MSL…………South 20 to 30 mph in the evening becoming 30 to 40 mph after midnight.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.

.WEDNESDAY… * Sky/weather…………………Mostly cloudy. Slight chance of showers morning becoming a chance during the afternoon.
* Max Temperature……………..50-62. * 24 hr trend………………Little change.
* Min Humidity………………..23-28 pct. * 24 hr trend………………6 pct wetter.
* Winds – 20 foot…Slope/Valley..Northwest 5 to 10 mph in the morning becoming southeast in the afternoon.
* Winds…10000 FT MSL…………Southwest 25 to 35 mph.
* Chance of Precip…………….40 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…..Little change. * Min humidity:
* Valley floor….14-22 percent.
* 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….North wind 10 to 15 mph.
* 10000 ft msl….West 15 to 25 mph becoming southwest 10 to 15 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.
* Mixing height…….4500 ft agl.
* Transport winds…..North 10 to 15 knots.
* Ventilation………Good.

.TONIGHT… * Sky/Weather………Partly cloudy.
* Min temperature: * Valley floor….35-40. * 24 hr trend…..On average up 2 degrees.
* Max humidity: Valley floor….41-46 percent. * 24 hr trend…..On average up 2 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….North wind up to 10 mph in the evening becoming downslope/downvalley 2 to 5 mph.
* 10000 ft msl….Southwest 15 to 20 mph increasing to south 25 to 30 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.

.WEDNESDAY… * Sky/Weather………Partly cloudy then becoming mostly cloudy.
* Max temperature: * Valley floor….62-67. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….18-26 percent. * 24 hr trend…..On average up 4 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….South 30 to 35 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..5.
* Mixing height…….4500 ft agl.
* Transport winds…..North 10 to 15 knots in the morning becoming light.
* Ventilation………Fair.

STATELINE – CLARK COUNTY BORDER:
TODAY… * Sky/Weather………Mostly sunny.
* Max temperature: * 4000 feet…….54-59. * 24 hr trend…..Little change.
* Min humidity: * 4000 feet…….17-23 percent. * 24 hr trend…..On average down 2 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Northeast winds up to 10 mph.
* 10000 ft msl….Southwest 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..3.
* Mixing height…….4200 ft agl.
* Transport winds…..Northeast around 10 knots.
* Ventilation………Fair.

.TONIGHT… * Sky/Weather………Partly cloudy then becoming mostly cloudy.
* Min temperature: * 4000 feet…….29-34. * 24 hr trend…..On average up 3 degrees.
* Max humidity: * 4000 feet…….48-53 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….North winds up to 10 mph.
* 10000 ft msl….South 15 to 20 mph increasing to 30 to 35 mph after midnight.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..5.

.WEDNESDAY… * Sky/Weather………Mostly cloudy.
* Max temperature: * 4000 feet…….54-59. * 24 hr trend…..Little change.
* Min humidity: * 4000 feet…….22-30 percent. * 24 hr trend…..On average up 6 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….South 30 to 35 mph becoming 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1.
* Haines Index……..4.
* Mixing height…….3300 ft agl.
* Transport winds…..Light winds.
* Ventilation………Marginal.

*************************** OUT OF COUNTY ********************************
…GUSTY SOUTHEAST TO EAST WINDS WITH DRY CONDITIONS OVER THE MOUNTAINS THROUGH TUESDAY…

…EXTENDED PERIOD OF PRECIPITATION FOR SOUTHWEST CALIFORNIA TUESDAY NIGHT THROUGH THURSDAY…

LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ247/CAZ249):
.TUESDAY… Sky/weather………Partly cloudy.
Max temperature…..65-71. 24 hr trend……Little change.
Min humidity……..20-30 percent. 24 hr trend……Little change.
20-foot winds…….Southeast 6-12 mph.
Marine layer……..None.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.TUESDAY NIGHT… Sky/weather…Partly cloudy then becoming mostly cloudy. Slight chance of showers after midnight.
Min temperature…..45-52.
Max humidity……..55-65 percent.
20-foot winds…….East 6-12 mph.
LAL……………..1. CWR (>0.10 IN)……10 percent.

.WEDNESDAY… Sky/weather………Cloudy. Showers likely, then showers in the afternoon.
Max temperature…..59-64.
Min humidity……..45-55 percent.
20-foot winds…….East 6-12 mph.
LAL……………..1. CWR (>0.10 IN)……60 percent.

LOS ANGELES COUNTY SAN FERNANDO VALLEY:
.TUESDAY… Sky/weather………Partly cloudy.
Max temperature…..63-71. 24 hr trend……Little change.
Min humidity……..18-25 percent. 24 hr trend……Little change.
20-foot winds…….East 6-12 mph.
Marine layer……..None.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.TUESDAY NIGHT… Sky/weather………Mostly cloudy. Chance of showers after midnight.
Min temperature…..46-50.
Max humidity……..55-65 percent.
20-foot winds…….East 6-12 mph early becoming 6-12 mph with local gusts to 20 mph late.
LAL……………..1. CWR (>0.10 IN)……10 percent.

.WEDNESDAY… Sky/weather………Cloudy. Showers likely, then showers in the afternoon.
Max temperature…..56-62.
Min humidity……..40-50 percent.
20-foot winds…….East 6-12 mph with local gusts to 20 mph.
LAL……………..1. CWR (>0.10 IN)……70 percent.

SANTA CLARITA VALLEY:
WIND ADVISORY NOW IN EFFECT UNTIL 3 PM PST THIS AFTERNOON
.TUESDAY… Sky/weather………Partly cloudy.
Max temperature…..60-67. 24 hr trend……Little change.
Min humidity……..10-20 percent. 24 hr trend……Little change.
20-foot winds…….Northeast 15-25 mph with gusts to 30 mph becoming east 6-12 mph in the afternoon.
Marine layer……..None.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.TUESDAY NIGHT… Sky/weather………Mostly cloudy. Chance of showers after midnight.
Min temperature…..42-47.
Max humidity……..50-60 percent.
20-foot winds…….Northeast 6-12 mph.
LAL……………..1. (>0.10 IN)……10 percent.

.WEDNESDAY… Sky/weather………Cloudy. Showers likely, then showers in the afternoon.
Max temperature…..55-59.
Min humidity……..40-45 percent.
20-foot winds…….Northeast 6-12 mph.
LAL……………..1.

ANGELES NATIONAL FOREST (CAZ253):
WIND ADVISORY NOW IN EFFECT UNTIL 3 PM PST THIS AFTERNOON
TUESDAY… Sky/weather………Partly cloudy.
Max temperature…..53-63 low elevations to 43-50 higher elevations. 24 hr trend……Up 4.
Min humidity……..15-25 percent. 24 hr trend……Little change.
20-foot winds…….
Valleys/lwr slopes…East 15-25 mph with gusts to 35 mph.
Ridges/upr slopes….Southeast 15-25 mph with gusts to 35 mph.
Marine layer……..None.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.TUESDAY NIGHT… Sky/weather………Mostly cloudy. Slight chance of rain and snow showers through the night.
Min temperature…..40-46 low elevations to 32-38 colder valleys and peaks.
Max humidity……..45-65 percent except 70-85 percent colder valleys.
20-foot winds…….
Valleys/lwr slopes…East 15-25 mph with gusts to 35 mph.
Ridges/upr slopes….Southeast 20-30 mph with gusts to 45 mph.
LAL……………..1. CWR (>0.10 IN)……20 percent.

.WEDNESDAY… Sky/weather………Cloudy. Snow showers likely. Showers. Snow showers in the afternoon.
Max temperature…..49-56 low elevations to 41-47 higher elevations.
Min humidity……..35-55 percent.
20-foot winds…….
Valleys/lwr slopes…East 15-25 mph with gusts to 35 mph.
Ridges/upr slopes….East 20-30 mph with gusts to 45 mph becoming 15-25 mph with gusts to 35 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……70 percent.

ANTELOPE VALLEY (CAZ259):
.TUESDAY… Sky/weather………Partly cloudy.
Max temperature…..51-59. 24 hr trend……Up 3.
Min humidity……..15-25 percent. 24 hr trend……Little change.
20-foot winds…….Northeast 10-20 mph with local gusts to 30 mph.
Marine layer……..None.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.TUESDAY NIGHT… Sky/weather………Partly cloudy then becoming mostly cloudy. Slight chance of showers after midnight.
Min temperature…..34-40.
Max humidity……..50-60 percent.
20-foot winds…….Northeast 10-20 mph with local gusts to 30 mph.
LAL……………..1. CWR (>0.10 IN)……10 percent.

.WEDNESDAY… Sky/weather………Mostly cloudy. Chance of showers, then showers likely in the afternoon.
Max temperature…..48-54.
Min humidity……..35-45 percent.
20-foot winds…….Northeast 10-20 mph with local gusts to 30 mph.
LAL……………..1. CWR (>0.10 IN)……40 percent.

KERN CO. DESERTS (CAZ298):
TUESDAY… Sky/weather………Mostly sunny. Chance of showers in the afternoon.
Max Temperature…..52-57. 24 HR Trend……Up 1-3 degrees.
Min Humidity……..19-29 percent. 24 HR Trend……Down 2-8 percent.
20-Foot Winds…….Northeast 3-11 mph.
LAL……………..1.
Ventilation………Good.
Mixing height…….3600 ft AGL.
Transport Winds…..East around 10 mph.
Chc Wetting Rain….0 percent.

.TUESDAY NIGHT… Sky/weather………Mostly cloudy. Chance of showers and snow showers. snow level 3500 feet.
Min Temperature…..34-39. 24 HR Trend……Up 1-3 degrees.
Max Humidity……..49-59 percent. 24 HR Trend……Up 7-13 percent.
20-Foot Winds…….Northeast 3-9 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.WEDNESDAY… Sky/weather………Mostly cloudy. Chance of snow showers in the morning. Chance of showers. snow level 4500 feet.
Max Temperature…..47-52. 24 HR Trend……Down 2-8 degrees.
Min Humidity……..32-42 percent. 24 HR Trend……Up 10-20 percent.
20-Foot Winds…….Northeast 3-8 mph.
LAL……………..1.
Ventilation………Marginal.
Mixing height…….2300 ft AGL.
Transport Winds…..Southeast around 5 mph.
Chc Wetting Rain….30 percent.

La Jolla CA
Tuesday
Mostly sunny, with a high near 67. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night
A chance of rain after 4am. Increasing clouds, with a low around 54. Southeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly after 10am. The rain could be heavy at times. High near 64. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain before 10pm, then showers after 10pm. The rain could be heavy at times. Low around 56. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible

Poway CA
Tuesday
Mostly sunny, with a high near 71. East wind 5 to 10 mph becoming west in the morning.
Tuesday Night
A chance of rain after 4am. Partly cloudy, with a low around 45. East wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly after 10am. The rain could be heavy at times. High near 65. East wind 5 to 10 mph becoming south in the morning. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain before 10pm, then showers after 10pm. The rain could be heavy at times. Low around 50. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

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

High pressure moving into the outlook area midweek will strengthen valley inversions and generate areas of valley fog and increased urban haze.

Increasing moisture ahead of the next Pacific storm system will spread across the outlook area beginning Tuesday. This moisture could fuel precipitation across far northern Utah by Wednesday.
Precipitation will become more widespread across mainly southern and central Utah with arrival of the aforementioned storm system late in the week.

Tuesday
Partly sunny, with a high near 36. Wind chill values as low as -2. Northeast wind 3 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 17. Light and variable wind becoming southeast 5 to 7 mph after midnight.
Wednesday
Partly sunny, with a high near 41. South southeast wind around 7 mph.
Wednesday Night
A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 24. Southeast wind around 7 mph.

============================================================
THIS DAY IN WEATHER HISTORY:
2017: Strong sundowner and Santa Ana winds persisted across Southern California for two weeks. Northerly wind gusts between 65 and 85 mph were reported at a few locations sometime during the two weeks. On this day, the Thomas fire sparked to life just north of Santa Paula. Over the next few weeks it burned over southwest Ventura and southeast Santa Barbara Counties and became California’s largest wildfire, burning 281,893 acres. It destroyed at least 1,063 structures and damaged 280 others. One firefighter and one civilian died.

2014: A Pacific storm brought moderate to heavy rain on 12/3 and on this day. Two-day rainfall totals of one to two inches were recorded west of the mountains, while the southern slopes of the San Bernardino Mountains got up to five inches of rain (isolated amount of 14.5 inches at Yucaipa Ridge). Flooding resulted, with mud, debris and water closing several roadways and stranding vehicles. On this day mud with debris ten feet high piled up on Soboba Road north of San Jacinto. A swift water rescue was needed.

1987: A cold front crossing the Pacific Coast brought heavy rain on this day and on 12.5. Mt. Wilson was drenched with 2.17 inches in six hours. 1.02 inches fell at LA between 5 and 7 pm and rain rates of one inch per hour were reported for a time at John Wayne Airport. 0.61 inch fell in 30 minutes in San Diego all on this day. Thunderstorm winds gusted to 55 mph at Newport Beach. Gale force winds battered the coast with speeds exceeding 40 mph, causing tree damage and power outages. Flooding in downtown LA prompted some evacuations. Flooding, including water into some houses, was reported in Fallbrook. More flooding was reported all across San Diego County, including downtown San Diego, where numerous motorists were trapped in their vehicles. A mudslide closed Valley Center Road and Lake Wohlford Road. In Westminster winds gusted up to 60 mph and damaged 40 mobile homes, nine of which were ripped out of the ground, and left 24 people homeless. Boats were shaken loose from their moorings. Lightning struck a radio tower in Newport Beach, knocking the station off the air, and knocked out power to the area. Winds knocked down power lines in Newport Beach.

1979: Temperatures soared in the valleys. Ramona reached 94°, El Cajon 93°, Alpine and Vista 90°. This is the only time Alpine and Vista have reached 90°in December, and one of only three times Ramona and El Cajon have reached 90° or higher in December.

1974: Heavy rain that began on 12/3 ended on this day. There was considerable flooding of low lying areas of Orange County.

1966: Heavy rain drenched the region, even the mountains, from 12/2 to 12/7. Storm totals for the period: 27.79 inches in Lake Arrowhead (believed to be a 100 year rainfall), 23.73 inches in Palomar Mountain, 18.72 inches in Big Bear Lake, 17.85 inches in Idyllwild, 9.14 inches in San Bernardino, 7.63 inches in Redlands, 6.21 inches in Santa Ana, 5.19 inches in Riverside, 2.99 inches in San Diego, 2.73 inches in Palm Springs, but only 0.66 inches in Victorville and 0.28 inches in Barstow! At least two homes were destroyed by floods and debris flows in Mill Creek Canyon. Debris flows and floods damaged homes and roads in Wrightwood and Lytle Creek. Homes and businesses were flooded in Redlands and Palm Springs. Many roads across the region were flooded and washed out. Scuba divers could not recover a Montclair man believed drowned in floodwaters. Strong storm winds caused power outages.

1958: Idyllwild reached 82°, which is a daily record for the month. Interestingly, Idyllwild has only recorded three 80-degree days in December since 1943, all of which occurred on consecutive days in 1958 (2/2 to 2/4). The Coachella Valley was also unusually warm on this day, with the city of Indio setting a record high for December, with a reading of 96°.

1873: 2.52 inches of rain fell in San Diego, the ninth greatest daily rainfall amount on record.

==================================================================
TROPICAL EAST PACIFIC REPORT:
For the eastern North Pacific…east of 140 degrees west longitude:

Tropical cyclone formation is not expected during the next 5 days.

======================================================================
CURRENT WEATHER @ HESP. @ 0735 Hrs. TEMP: 320 RH: 75% WIND: CALM
0.75” RF @ HESP. STA.SINCE OCT. 1st/20 Yr Avg: 7.12” : MONTH:0.00” YTD S/F: 0.00” /
=================================================================
FIRES: UPDATED

National Preparedness Level (PL 1)

CDF FIRES TO DATE (STATE LANDS SRA)
NUMBER OF FIRES AND ACRES:
Interval Fires Acres
January 1, 2018 through December 2, 2018 6,228 876,225
January 1, 2017 through December 2, 2017 6,085 317,067
5 year average (same interval) 5,574 232,469
2018 Combined YTD (CALFIRE & US Forest Service) 7,510 1,671,313

Southern California Area (PL 2 )
No Reportable Incidents

Northern California Area (PL 1 )
No Reportable Incidents

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