FIRE WEATHER 8/14/19

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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Date: 8/14/19

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.:85

National Preparedness Level (PL 3 )

Southern California Area Preparedness Level: (PL 2 )

Northern California Area Preparedness Level (PL 2 )

GREEN = PL: 1 BLUE – PL:2 YELLOW = PL:3 ORANGE = PL:4 RED = PL: 5
==============================================================================
SYNOP: (NWS SAN DIEGO)
The heat from high pressure to the south will peak today and Thursday. For today through Friday during the afternoon and early evening, low inland humidity combined with gusty southwest to west winds will produce near critical fire weather conditions for the desert slopes of the mountains into the deserts. A cooling trend for Friday into the weekend will return high temperatures to near average. High pressure to the south will bring another warming trend for Monday through Wednesday of next week. A shallow marine layer will become a little deeper for the weekend, then become shallower early next week. The marine layer will keep areas near the coast cooler with higher humidity.
· High temperatures will reach the 80s in the mountains to 100-105 in the valleys and up to 118 in the low desert through Thursday. Expect readings to drop around 10 degrees over the weekend with Saturday being the coolest day. By the middle to latter stages of next week, valley highs may approach 105-110.

· Most areas will see minimum RH in the teens through Thursday. Some areas in the Southern Sierra and the Southern CA mountains above 3,000 feet will see minimums in the 8-12% range for up to 6 hours each afternoon.

· Breezy conditions will return to the Kern County Mountains and Banning Pass eastward into the high desert this weekend. Otherwise, winds will be light.

· No thunderstorms through the next 10-14 days.
CONFIDENCE AND DETAILS
Heatwave – Inland, Hottest Conditions Across the Lower Deserts
High Confidence
Excessive heat lower deserts and hot conditions over the inland valleys.
Heat-related illness possible if precautions are not taken.
Details
– What: Dangerous heat inland.

● An Excessive Heat Warning is in effect for the lower deserts
Wednesday through Thursday.

● A Heat Advisory is in effect for the Inland Empire and inland San
Diego County Wednesday-Thursday.

– Where: Inland. High temperatures:

● Lower Deserts: Around 115

● Inland Empire and High Deserts: 100 to 106

● Inland San Diego: 95-100, isolated foothill locales 100-105

– When: Wednesday through Thursday

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
High pressure will continue to build over the region through Thursday. This will allow for dry conditions, clear skies, and temperatures rising to dangerous levels across portions of the area. Winds will remain relatively light with some afternoon breezes through Thursday. As a trough approaches the region Friday, winds will begin to increase Friday through the weekend with gusts to around 20-30 mph each day. Critical RH values will be present each afternoon at 10 percent or less.

CONFIDENCE AND DETAILS
Heat Risk WED-FRI
HIGH Confidence
Higher temperatures will likely increase heat-related emergency calls. Homeless, the elderly, children and those already with health issues are the most at risk. Increased risk to children and pets left unattended in hot vehicles or outdoors.
Details:
Wednesday through Friday
Heat Risk will reach Category 3 (High) or 4 (Extreme) in areas such as Laughlin/Bullhead City, Lake Havasu City, Kingman, Lakes Mead and Mohave, Death Valley, and Las Vegas. Temps 5 to 10 degrees above seasonal normals. Elevated overnight temps are a compelling factor in driving heat impacts due to long-duration heat, with little to no relief overnight.
For more information visit: https://www.wrh.noaa.gov/wrh/heatrisk/
Fire Weather Concerns Fri/Sat
MODERATE Confidence Extreme fire behavior and rapid fire growth.
Details:
Friday & Saturday
Very dry atmosphere and elevated southwest winds will result in near-critical across southern Nevada and southeast California. Highest risk during afternoon and early evening hours.

FLASH FLOOD POTENTIAL INDEX FOR EXTREME SOUTHWESTERN CALIFORNIA

WEDNESDAY THURSDAY
Inland Empire
NONE NONE
San Bernardino County Mountains
NONE NONE
High Desert Including Apple and Lucerne Valleys NONE NONE
San Gorgonio Pass Near Banning NONE NONE

Flash Flood Codes: GREEN: NONE YELLOW: LOW ORANGE: MODERATE RED: HIGH

SPECIAL NOTES:

DAILY FUELS/FIRE POTENTIAL:
Expect moderate IA the next two days due to sunny and warm weather. But light winds and a fair amount of live fuel moisture should keep rates of spread manageable, except where slope and terrain align favorably. Next week’s hot, sunny and dry weather should produce optimal drying conditions and dead fuel moisture will continue to be pushed to well below normal readings. The most pronounced disparity in dead fuel moisture levels compared to normal are over Central CA where a lack of a summer monsoon has allowed for many days of strong drying conditions. Live fuel moisture levels continue be higher than normal, but if a prolonged period of hot, dry weather occurs as suggested by the models, expect these fuel types to trend sharply lower in coming days.

• Fire Danger / Dispatch Levels / Burn Status

• VALLEY: HIGH HIGH SRA: SUSPENDED LOCAL: NO

• DESERT: HIGH HIGH SRA: SUSPENDED LOCAL: YES

• MOUNTAINS: HIGH HIGH SRA: SUSPENDED LOCAL: NO

• OWENS VALLEY: HIGH HIGH SRA: SUSPENDED LOCAL: YES

• Burn Index and Ignition Component:

• OWENS VALLEY: BI: 62 IC: 57

• OAK CREEK: BI: 89 IC: 80

• FAWNSKIN: BI: 00 IC:00

• BDF MILL CREEK: BI: 47 IC: 26

• YUCCA VALLEY: BI: 88 IC: 70

• DEVORE: BI: 113 IC: 55

• MORMON ROCK: BI: 54 IC: 28

• HEAPS PEAK: BI: 00 IC: 00

APPLE VALLEY: BI: 71 IC: 58

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

————————————————————————————–
APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):
TODAY… Sky/weather………Sunny.
Max temperature…..99 to 107. 24 HR TREND……Up 2 degrees.
Min humidity……..5 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Variable 2 to 5 mph becoming south 6 to 11 mph with gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..65 to 75. 24 HR TREND……Up 2 degrees.
Max humidity……..15 to 20 percent. 24 HR TREND……Down 10 percent.
WIND (20 FT)……..Winds southwest 6 to 11 mph with gusts to 25 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.THURSDAY… Sky/weather………Sunny.
Max temperature…..99 to 106. 24 HR TREND……Up 1 degree.
Min humidity……..5 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds west 6 to 11 mph. Gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*WRIGHTWOOD:
Today
Sunny, with a high near 85. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Tonight
Clear, with a low around 65. South wind around 5 mph.
Thursday
Sunny, with a high near 84. Southeast wind 5 to 10 mph becoming north in the afternoon.
Thursday Night
Clear, with a low around 65. West wind 5 to 10 mph.

*BIG PINES / WEST WRIGHTWOOD AREA
HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
9 PM PDT THURSDAY
Today
Sunny, with a high near 82. South wind 5 to 10 mph.
Tonight
Clear, with a low around 61. Southwest wind 5 to 10 mph becoming west northwest after midnight.
Thursday
Sunny, with a high near 81. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Clear, with a low around 60. West northwest wind around 10 mph, with gusts as high as 15 mph.

*PHELAN:
Today
Sunny, with a high near 94. Light and variable wind becoming southeast 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Clear, with a low around 69. South wind 5 to 10 mph becoming west in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 96. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Clear, with a low around 69. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

*TRONA:
TODAY… Sky/weather………Sunny.
Max Temperature…..100-105. 24 HR Trend……Up 1-3 degrees.
Min Humidity……..7 percent. 24 HR Trend……Little change.
20-Foot Winds…….South 3-7 mph.
LAL……………..1.
Ventilation………Very good.
Mixing height…….14200 ft AGL.
Transport Winds…..Northwest around 5 mph in the morning shifting to the south in the afternoon.
Chc Wetting Rain….0 percent.

.TONIGHT… Sky/weather………Clear.
Min Temperature…..72-77. 24 HR Trend……Up 1-3 degrees.
Max Humidity……..16-26 percent. 24 HR Trend……Down 2-4 percent.
20-Foot Winds…….West 3-11 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.THURSDAY… Sky/weather………Sunny.
Max Temperature…..101-106. 24 HR Trend……Little change.
Min Humidity……..6 percent. 24 HR Trend……Little change.
20-Foot Winds…….West 3-7 mph in the early morning shifting to the south by afternoon.
LAL……………..1.
Ventilation………Very good.
Mixing height…….14300 ft AGL.
Transport Winds…..North around 5 mph in the morning shifting to the south in the afternoon.
Chc Wetting Rain….0 percent.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….110-115. * 24 hr trend…..On average up 6 degrees.
* Min humidity: * Valley floor….4-7 percent. * 24 hr trend…..On average down 2 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph becoming southwest up to 10 mph in the afternoon. Gusts up to 20 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

.TONIGHT… * Sky/Weather………Clear.
* Min temperature: * Valley floor….69-74. * 24 hr trend…..Little change.
* Max humidity: * Valley floor….14-19 percent. * 24 hr trend…..On average down 6 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….West wind 10 to 15 mph.
* 10000 ft msl….Southeast up to 10 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

.THURSDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….111-116. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….4-6 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph becoming southwest up to 10 mph in the afternoon. Gusts up to 20 mph.
* 10000 ft msl….South 10 to 15 mph decreasing to around 10 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

*BAKER:
Today
Sunny and hot, with a high near 112. Southeast wind around 6 mph becoming calm.
Tonight
Clear, with a low around 80. Calm wind becoming west 5 to 7 mph after midnight.
Thursday
Sunny and hot, with a high near 114. Southeast wind around 5 mph becoming calm in the morning.
Thursday Night
Clear, with a low around 80. Calm wind becoming southwest 5 to 8 mph.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS:
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….102-107. * 7000 feet…….85-90. * 24 hr trend…..On average up 5 degrees.
* Min humidity: * Valley floor…5-7 percent. * 7000 feet…….7-17 percent. * 24 hr trend…..On average down 2 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming south around 10 mph in the afternoon.
* Upper slopes….Southeast winds up to 10 mph.
* 10000 ft msl….Southeast up to 10 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….63-68. * 7000 feet…….35-40. * 24 hr trend…..Little change.
* Max humidity: * Valley floor….22-27 percent. * 7000 feet…….34-39 percent. * 24 hr trend…..On average down 3 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….South winds up to 10 mph in the evening becoming downslope/downvalley 2 to 5 mph.
* Upper slopes….West winds up to 10 mph.
* 10000 ft msl….Southeast up to 10 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

.THURSDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….102-107. * 7000 feet…….87-92. * 24 hr trend…..Little change.
* Min humidity: * Valley floor….5-7 percent. * 7000 feet…….6-16 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph becoming south up to10 mph in the afternoon.
* Upper slopes….Northeast winds up to 10 mph shifting to the south in the afternoon.
* 10000 ft msl….Southeast up to 10 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

INLAND EMPIRE (CAZ248):
HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM PDT THURSDAY
TODAY…Sky/weather………Sunny.
Max temperature…..98 to 105. 24 HR TREND……Up 2 degrees.
Min humidity……..10 to 15 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Variable 2 to 5 mph becoming west 6 to 10 mph with gusts to 20 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT…Sky/weather………Clear.
Min temperature…..64 to 70. 24 HR TREND……Up 1 degree.
Max humidity……..35 to 45 percent. 24 HR TREND……Down 15 percent.
WIND (20 FT)……..Winds west 6 to 10 mph with gusts to 20 mph in the evening becoming variable 2 to 5 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.THURSDAY… Sky/weather………Sunny.
Max temperature…..96 to 104. 24 HR TREND……Little change.
Min humidity……..10 to 15 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Variable 2 to 5 mph becoming west 6 to 11 mph with gusts to 20 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*DEVORE:
HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM PDT THURSDAY
Today
Sunny, with a high near 101. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 67. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 99. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Clear, with a low around 66. South wind 5 to 10 mph becoming light and variable in the evening.

*CHINO HILLS:
HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM PDT THURSDAY
Today
Sunny, with a high near 94. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Clear, with a low around 64. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Thursday
Sunny, with a high near 93. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Clear, with a low around 63. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

*COLTON:
HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM PDT THURSDAY
Today
Sunny, with a high near 102. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 71. West wind 5 to 10 mph becoming light southwest after midnight.
Thursday
Sunny, with a high near 102. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Thursday Night
Clear, with a low around 69. Southwest wind around 5 mph becoming calm after midnight.

SAN BERNARDINO N.F. (CAZ255/CAZ256):
TODAY… Sky/weather………Sunny.
Max temperature…..77 to 87 above 6000 feet to 86 to 96 below 6000 feet. 24 HR TREND……Up 8 degrees.
Min humidity……..5 to 10 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 11 mph. Gusts to 25 mph in the afternoon.
RIDGETOP………Winds southwest 6 to 12 mph with gusts to 25 mph.
CWR (>0.10 IN)……0 percent.LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..50 to 60 above 6000 feet to 58 to 68 below 6000 feet. 24 HR TREND……Up 1 degree.
Max humidity….10 to 15 percent on desert slopes to 20 to 30 percent on coastal slopes.24 HR TREND…Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 11 mph with gusts to 25 mph.
RIDGETOP………Winds west 6 to 12 mph with gusts to 25 mph becoming southeast 6 to 8 mph after midnight.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.THURSDAY… Sky/weather………Sunny.
Max temperature…..77 to 87 above 6000 feet to 85 to 95 below 6000 feet. 24 HR TREND……Down 4 degrees.
Min humidity……..5 to 10 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 12 mph. Gusts to 25 mph in the afternoon.
RIDGETOP………Winds southeast 6 to 8 mph becoming southwest 6 to 12 mph in the afternoon. Gusts to 25 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*LAKE ARROWHEAD SCHOOL- AREA:
Today
Sunny, with a high near 86. Southeast wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
Clear, with a low around 67. South wind 5 to 10 mph becoming east after midnight.
Thursday
Sunny, with a high near 86. Southeast wind 5 to 15 mph becoming southwest in the morning. Winds could gust as high as 20 mph.
Thursday Night
Clear, with a low around 66. Southeast wind 5 to 10 mph.

*BIG BEAR SCHOOL AREA:
Today
Sunny, with a high near 82. Southwest wind 5 to 10 mph.
Tonight
Clear, with a low around 50. Southwest wind 5 to 10 mph.
Thursday
Sunny, with a high near 83. Southeast wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Clear, with a low around 49. Southwest wind 5 to 10 mph.

BANNING PASS:
EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 9 PM PDT THURSDAY
TODAY… Sky/weather………Sunny.
Max temperature…..110 to 115. 24 HR TREND……Up 6 degrees.
Min humidity……..5 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Winds west 6 to 11 mph. Gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..79 to 88. 24 HR TREND……Up 1 degree.
Max humidity……..10 to 15 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..Winds west 6 to 13 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.THURSDAY… Sky/weather………Sunny.
Max temperature…..110 to 115. 24 HR TREND……Little change.
Min humidity……..5 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds west 6 to 13 mph. Gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ261):
EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 8 AM PDT /8 AM
MST/ THIS MORNING TO 8 PM PDT /8 PM MST/ FRIDAY
TODAY… * Sky/weather…………………Sunny.
* Max Temperature……………..95-109. * 24 hr trend………………Little change.
* Min Humidity………………..6-11 pct. * 24 hr trend………………3 pct drier.
* Winds – 20 foot…Slope/Valley..Northwest 5 to 10 mph in the morning becoming south in the afternoon.
* Winds…10000 FT MSL…………Southwest 10 to 20 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.

.TONIGHT… * Sky/weather…………………Clear.
* Min Temperature……………..72-82. * 24 hr trend………………Little change.
* Max Humidity………………..13-18 pct. * 24 hr trend………………9 pct drier.
* Winds – 20 foot…Slope/Valley..Northwest 5 to 15 mph.
* Winds…10000 FT MSL…………Light and variable in the evening becoming southeast 5 to 15 mph after midnight.
* Chance of Precip…………….0 percent. * CWR (>= 0.10 IN)…………….0 percent. * LAL………………………..1.

.THURSDAY… * Sky/weather…………………Sunny.
* Max Temperature……………..96-111. * 24 hr trend………………Little change.
* Min Humidity………………..4-9 pct. * 24 hr trend………………Little RH change.
* Winds – 20 foot…Slope/Valley..Northwest 5 to 10 mph in the morning becoming southwest in the afternoon.
* Winds…10000 FT MSL…………South 5 to 15 mph in the morning becoming light and variable 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.

NEEDLES, RIVER BAT. (CAZ229):
EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 8 AM PDT /8 AM
MST/ THIS MORNING TO 8 PM PDT /8 PM MST/ FRIDAY
TODAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….114-119. * 24 hr trend…..On average up 5 degrees.
* Min humidity: * Valley floor….3-8 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.
* Mixing height…….13900 ft agl.
* Transport winds…..Light winds.
* Ventilation………Good.

.TONIGHT… * Sky/Weather………Mostly clear.
* Min temperature: * Valley floor….79-84. * 24 hr trend…..On average up 2 degrees.
* Max humidity: * Valley floor….12-17 percent. * 24 hr trend…..On average down 4 percent.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Downslope/downvalley 2 to 5 mph.
* 10000 ft msl….Southeast up to 10 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

.THURSDAY… * Sky/Weather………Sunny.
* Max temperature: * Valley floor….116-121. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * Valley floor….3-8 percent. * 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg):
* Valley floor….Upslope/upvalley 4 to 8 mph becoming south up to 10 mph in the afternoon.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.
* Mixing height…….15600 ft agl.
* Transport winds…..Light winds.
* Ventilation………Excellent.

STATELINE – CLARK COUNTY BORDER:
EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 8 AM PDT /8 AM
MST/ THIS MORNING TO 8 PM PDT /8 PM MST/ FRIDAY
TODAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….106-111. * 24 hr trend…..On average up 4 degrees.
* Min humidity: * 4000 feet…….6-8 percent. * 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Upslope/upvalley 4 to 8 mph.
* 10000 ft msl….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.
* Mixing height…….14300 ft agl.
* Transport winds…..Light winds.
* Ventilation………Good.

.TONIGHT… * Sky/Weather………Clear.
* Min temperature: * 4000 feet…….70-75. * 24 hr trend…..Little change.
* Max humidity: * 4000 feet…….12-17 percent. * 24 hr trend…..On average down 6 percent.
* Wind (slope/valley=20 ft, 10 min avg):
* Slope/valley….Downslope/downvalley 2 to 5 mph becoming northwest up to 10 mph after midnight. Gusts up to 20 mph.
* 10000 ft msl….South up to 10 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.

.THURSDAY… * Sky/Weather………Sunny.
* Max temperature: * 4000 feet…….108-113. * 24 hr trend…..On average up 2 degrees.
* Min humidity: * 4000 feet…….5-7 percent. * 24 hr trend…..Little change.
* 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….South 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. * LAL……………..1. * Haines Index……..6.
* Mixing height…….15800 ft agl.
* Transport winds…..Light winds.
* Ventilation………Very good.

*************************** OUT OF COUNTY ********************************
ELEVATED TO BRIEF CRITICAL FIRE DANGER FAR INLAND AREAS,
MOUNTAINS, AND DESERTS DUE TO VERY WARM TEMPERATURES, LOW HUMIDITY,
AND GUSTY ONSHORE WINDS THROUGH FRIDAY

LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ247/CAZ249):
WEDNESDAY… Sky/weather………Sunny.
Max temperature…..93-103. 24 hr trend……Up 4.
Min humidity……..15-25 percent. 24 hr trend……Down 6.
20-foot winds…….Variable 3-6 mph becoming south 6-12 mph late in the afternoon.
Marine layer……..900 ft asl. LAL……………..1. CWR (>0.10 IN)……0 percent.

.WEDNESDAY NIGHT.. Sky/weather………Clear.
Min temperature…..64-69.
Max humidity……..60-80 percent except 40-50 percent in the hills.
20-foot winds…….South 6-12 mph with local gusts to 20 mph early becoming variable 3-6 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.THURSDAY… Sky/weather………Sunny.
Max temperature…..91-101.
Min humidity……..20-35 percent.
20-foot winds…….Variable 3-6 mph becoming south 6-12 mph late in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANGELES NATIONAL FOREST (CAZ253):
HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
9 PM PDT THURSDAY
WEDNESDAY… Sky/weather………Sunny.
Max temperature…..92-101 low elevations to 82-90 higher elevations. 24 hr trend……Up 3.
Min humidity……..8-15 percent. 24 hr trend……Little change.
20-foot winds…….
Valleys/lwr slopes…Southwest 6-12 mph becoming south 10-20 mph with gusts to 25 mph late in the afternoon.
Ridges/upr slopes….Variable 3-6 mph becoming southwest 6-12 mph late in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

.WEDNESDAY NIGHT… Sky/weather………Clear.
Min temperature…..68-73 low elevations to 61-66 colder valleys and peaks.
Max humidity……..15-25 percent except 30-40 percent colder valleys.
20-foot winds…….
Valleys/lwr slopes…Southwest 10-20 mph with gusts to 25 mph in the evening becoming northwest 6-12 mph late. Strongest through the I-5 Corridor.
Ridges/upr slopes….West 6-12 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.THURSDAY… Sky/weather………Sunny.
Max temperature…..92-101 low elevations to 82-90 higher elevations.
Min humidity……..9-15 percent.
20-foot winds…….
Valleys/lwr slopes…Northwest 6-12 mph becoming southwest 10-20 mph with gusts to 25 mph late in the afternoon. Strongest through the I-5 Corridor.
Ridges/upr slopes….West 6-12 mph becoming southwest 10-20 mph with gusts to 25 mph late in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANTELOPE VALLEY (CAZ259):
WEDNESDAY… Sky/weather………Sunny.
Max temperature…..93-103. 24 hr trend……Little change.
Min humidity……..3-7 percent. 24 hr trend……Little change.
20-foot winds…….Southwest 6-12 mph becoming 10-20 mph with gusts to 30 mph late in the afternoon. Isolated gusts to 40 mph near Lake Palmdale.
Marine layer……..None. LAL……………..1.
CWR (>0.10 IN)……0 percent.

.WEDNESDAY NIGHT… Sky/weather………Clear.
Min temperature…..63-73.
Max humidity……..15-35 percent.
20-foot winds…….Southwest 10-20 mph with local gusts to 30 mph. Isolated gusts to 40 mph near Lake Palmdale.
LAL……………..1. CWR (>0.10 IN)……0 percent.

.THURSDAY… Sky/weather………Sunny.
Max temperature…..94-104.
Min humidity……..8-12 percent.
20-foot winds…….Southwest 6-12 mph becoming 10-25 mph with local gusts to 35 mph late in the afternoon. Isolated gusts to 45 mph near Lake Palmdale.
LAL……………..1. CWR (>0.10 IN)……0 percent.

KERN CO. DESERTS (CAZ298):
TODAY… Sky/weather………Sunny.
Max Temperature…..98-103. 24 HR Trend……Up 2-4 degrees.
Min Humidity……..6-16 percent. 24 HR Trend……Little change.
20-Foot Winds…….Southwest 6 mph in the early morning increasing to south 3-10 mph by afternoon.
LAL……………..1.
Ventilation………Very good.
Mixing height…….14200 ft AGL.
Transport Winds…..Southwest around 5 mph.
Chc Wetting Rain….0 percent.

.TONIGHT… Sky/weather………Clear.
Min Temperature…..67-72. 24 HR Trend……Up 1-3 degrees.
Max Humidity……..30-40 percent. 24 HR Trend……Down 1-3 percent.
20-Foot Winds…….West 3-11 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

.THURSDAY… Sky/weather………Sunny.
Max Temperature…..99-104. 24 HR Trend……Little change.
Min Humidity……..8-18 percent. 24 HR Trend……Little change.
20-Foot Winds…….West 7 mph in the early morning shifting to the southwest 3-7 mph by afternoon.
LAL……………..1.
Ventilation………Excellent.
Mixing height…….14200 ft AGL.
Transport Winds…..Southwest around 5 mph.
Chc Wetting Rain….0 percent.

*La Jolla CA
Today
Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 73. Northwest wind 5 to 10 mph.
Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 65. Northwest wind around 5 mph.
Thursday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 71. Northwest wind 5 to 10 mph.
Thursday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 64. Northwest wind around 5 mph becoming calm in the evening.

*Poway CA
HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM PDT THURSDAY
Today
Sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Clear, with a low around 65. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 91. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 64. Northwest wind around 5 mph becoming calm.

*CEDAR CITY Ut.
Today
Sunny, with a high near 93. Light and variable wind becoming south southwest 10 to 15 mph in the afternoon.
Tonight
Clear, with a low around 60. Southeast wind 8 to 10 mph.
Thursday
Sunny, with a high near 94. Southeast wind 5 to 9 mph becoming calm.
Thursday Night
Clear, with a low around 62. South wind around 9 mph.

============================================================
THIS DAY IN WEATHER HISTORY:
2004: Thunderstorms hit both Yucca Valley and Phelan, and produced an F0 tornado in Phelan. The thunderstorms produced severe flash flooding that damaged homes in Spring Valley Lake (Victorville) and Hesperia. Vehicles were trapped in five feet of water. Water eight feet deep inundated a railroad causing major delays (a train backup extending to Cajon Pass). The tornado caused little damage, but damages from flash flooding exceeded $5 million.

2002: It was 112° in Victorville, the highest temperature on record for August. This also occurred on 8/6 and 8/7 of 1998.

1998: Strong thunderstorms developed each day in the valleys and the deserts starting on 8/12 and ending on this day. Flash flooding and very strong winds resulted in Apple Valley. A thunderstorm in Hemet produced a downburst with winds to 70 mph and 0.75 inch hail that damaged buildings, trees, and power lines. Golf ball size hail fell at Cajon Pass. 1.6 inches of rain fell in 30 minutes at Boulevard.

1994: The low temperature was 77° in Riverside, the highest minimum temperature on record.

1992: A whopping 6.12 inches of rain fell in Palomar Mountain, the greatest daily amount on record for August.

1987: A very unseasonable storm from Alaska brought light rainfall to the area: 0.01 inch at San Diego, 0.07 inch at SDSU and Chula Vista, and 0.05 inch at Montgomery Field and Brown Field.

1965: A heavy thunderstorm struck Yucaipa. A flash flood came down Wildwood Canyon for an hour, washing out some roads and flooding streets. A pickup truck driver was swept about 1200 feet, but climbed out unhurt.
1963: A terrible thunderstorm hit Oak Glen with about two inches of rain between noon and 3 pm. The thunderstorm was heavier to the north along Yucaipa Ridge. Disastrous debris flows damaged numerous homes, farms, roads, and a church. Two boys were rescued from the flooding creek.
1955: Heavy thunderstorms struck Forest Home (now Forest Falls) and Barstow. In Forest Home torrents of water up to six feet deep swept down Mill Creek Canyon leaving up to five feet of sand and rocks on the road. Huge boulders rolled onto the roadways.

==================================================================
TROPICAL EAST PACIFIC REPORT:
Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Wed Aug 14 2019

For the eastern North Pacific…east of 140 degrees west longitude:

An elongated low pressure system located more than 1300 miles west-southwest of the southern tip of the Baja California peninsula is producing a small area of showers and thunderstorms. Environmental conditions are expected to be somewhat conducive for development, and a tropical depression could form over the next few days before the system reaches cooler waters and upper-level winds become unfavorable. This disturbance is forecast to move west-northwestward at 10 to 15 mph during the next couple of days.
* Formation chance through 48 hours…medium…40 percent.
* Formation chance through 5 days…medium…50 percent.

A broad area of low pressure is forecast to form south or southeast of the southeastern coast of Mexico late this week.
Environmental conditions are expected to be conducive for gradual development of the system over the weekend while the system moves generally westward.
* Formation chance through 48 hours…low…near 0 percent.
* Formation chance through 5 days…low…30 percent.

======================================================================
CURRENT WEATHER @ HESP. @ 0719 Hrs. TEMP: 620 RH: 59% WIND: CALM
7.63” RF @ HESP. STA.SINCE OCT. 1st/20 Yr Avg: 7.12” : MONTH: 0.00” YTD S/F: 1.00” /
=================================================================
FIRES: UPDATED

National Preparedness Level (PL 3)

Initial attack activity: Light (115 new fires)
New large incidents: 4
Large fires contained: 4
Uncontained large fires:*** 16
Area Command teams committed: 0
NIMOs committed: 0
Type 1 IMTs committed: 1
Type 2 IMTs committed: 5

Active Incident Resource Summary
GACC Incidents Cumulative Acres Crews Engines Helicopters Total Personnel
AICC 6 750,973 3 0 2 152
NWCC 12 66,538 37 76 18 1,752
ONCC 2 1,245 27 22 3 570
OSCC 3 2,211 5 13 1 206
NRCC 14 15,137 28 37 6 1,098
GBCC 21 135,469 39 80 14 1,678
SWCC 13 33,952 6 39 3 386
RMCC 2 220 0 0 0 4
EACC 0 0 0 0 0 0
SACC 8 18,997 0 16 0 75
Total 81 1,024,742 145 283 47 5,921

CDF FIRES TO DATE (STATE LANDS SRA)
Interval Fires Acres
January 1, 2019 through August 4, 2019 2,971 22,949
January 1, 2018 through August 4, 2018 3,661 615,771
5-Year Average (same interval) 3,572 245,850
2019 Combined YTD (CALFIRE & US Forest Service) 3,487 45,364

Southern California Area (PL 2 )
New fires: 20
New large incidents: 0
Uncontained large fires: 1

Springs, Vegetation Fire, Mono County, Update
13 miles southeast of Lee Vining
Federal DPA, FRA Inyo National Forest
• 352 (+332) acres, grass and brush, 10% contained (+9% containment)
• Moderate rate of spread with flanking, backing and creeping
• Suppression strategy is monitor/confine
• Incident submitting one ICS-209 Thursdays at 1800
Cow, Vegetation Fire, Tulare County, Update
Golden Trout Wilderness, 13 miles west of Olancha
Federal DPA, FRA Inyo National Forest
• 11(+10) acres, grass and brush, 1% contained (+1% containment)
• Minimal fire behavior with creeping, backing and flanking
• Suppression strategy is monitor/confine
• Incident submitting one ICS-209 Thursdays at 1800
Kelty, Vegetation Fire, Mono County, Update
13 miles west of Benton
Federal DPA, FRA Inyo National Forest
• .9 (+.5) acres grass and brush, 0% contained (+0% containment)
• Minimal fire behavior with smoldering and creeping
• Suppression strategy is monitor/confine
• Incident submitting one ICS-209 Thursdays at 1800
West fire
Last Updated 8/13/2019
Date Started 8/13/2019
Location Information off of 120th Street West and Coppermill Road, Lancaster
Lat/Long [34.675542, -118.342239]
Status Active
Percentage Contained 30%
Acres Burned 90
Fuel Type
Administrative Unit CAL FIRE Los Angeles County Fire Department

Northern California Area (PL 2 )
CA-MEU Moose Fire: 225 acres grass and oak woodland, 35% contained. All Evacuation orders have been lifted. Structures in the area remain threatened. Crew continue to mop up and strengthen control lines.

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