WEATHER 5/22/20

DAILY FIRE WEATHER & FIRE INFO
ALL UNITS From:
EMAIL: pdupree@bdcecs.org
Ph: OFFICE:(760) 559-3032
AFTER 2200 HRS CALL: (760)-244-9790
RADIO:(HAM) KG6ZHW
COUNTY F.D RADIO: #733784 CALL SIGN: COM-330

Date: 5/22/20

SKYWARN: NORMAL
NETS ON WED NIGHT @1900 HEAPS PK./WX
SKYWARN NET TUESDAY @ 1900 HRS TABLE Mt.
BRIEFS TABLE MT. ON SUN @ 1800 HRS

DAYS NO R.F. @ STA.: 41

National Preparedness Level (PL 1 )

Southern California Area Preparedness Level: (PL 1 )

Northern California Area Preparedness Level (PL 1 )

GREEN = PL: 1 BLUE – PL:2 YELLOW = PL:3 ORANGE = PL:4 RED = PL: 5
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SOUTH OPS WX:
A shortwave trough will propagate through the Pacific Northwest into the Great Basin the next two days, resulting in slightly cooler weather. However, an upper-level ridge will strengthen into the West Coast late tomorrow and continue to intensify through most of next week. Temperatures will gradually increase each day through Thursday, eventually becoming 10 to 15 degrees above normal. A cut-off low pressure area will force the ridge further east, marginally lowering temperatures at the end of the forecast period.

· A Red Flag Warning exists for the Mojave Desert and eastern Inyo County through Death Valley this afternoon due to critically low humidity of 8 to 15% coupled with winds of 20 to 30mph, occasionally gusting to 50 mph.

· Temperatures will be slightly cooler today with mountains reaching the 60’s to low 70’s, valleys in the 80’s, and deserts reaching the 90’s. Below average temperatures will continue tomorrow with highs across all areas shedding around 5 degrees from today.

· Gusty northerly winds will surface through Santa Barbara County tomorrow evening. Maximum wind speeds will be limited to 10 to 20 mph, gusting to 30 mph.

· Dry conditions will continue for the mountains and adjacent valleys and deserts to the east with minimum RH remaining under 30%. Widespread low humidity’s below 30% will develop Monday and persist through much of the week for the forecast area outside of the immediate coast.

· A major warming trend is expected next week with the presence of a strong ridge. High temperatures will soar to 10 to 15 degrees above normal by Tuesday with some valley locations possibly exceeding the century mark.
· Winds will be generally light beginning Sunday through the remainder of the forecast period.

SYNOP: (NWS SAN DIEGO)
Stronger onshore flow will bring a cooling trend today and Saturday. Gusty west winds will develop over the mountains and deserts this afternoon and evening, weakening overnight. The marine layer to around 2500 to 3000 feet on Saturday. High pressure will strengthen over CA next week. The heat is expected to peak for inland Wednesday and Thursday with high temperatures 10 to 15 degrees above normal. A marine layer will remain in place through the week but will be much shallower, generally around 1000 feet.

NWS LAS VEGAS SYNOP– (NORTH & EAST OF COUNTY)
RED FLAG WARNING REMAINS IN EFFECT FROM NOON PDT TODAY TO 8 PM PDT THIS EVENING FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONES 227 AND 228

Wind and relative humidity conditions will be nearing or reaching Red Flag Warning criteria on today through
much of southern California into Nevada and Arizona. Winds have increased from previous forecasts, so expanded the Red Flag Warning to include NV-465 and 466, as well as AZ-101 and 102. Arizona zones would favor more the north half of the bigger region where the strong winds and higher fire danger will likely set up.
Otherwise, Red Flag Warning for fire zones CA-227 and 228 continue unchanged. Over the weekend, less wind and seasonal temperatures are expected resulting in lower fire concerns.
Temperatures are forecast to warm rapidly next week, possibly resulting in the hottest conditions of the year thus far by the middle of the week.

Key Points:
• Expanded Wind Advisory and Red Flag Warnings which are in effect from noon until 8 PM today.
• Hot temperatures next week with readings likely 15-20 degrees above normal.

DAILY FUELS/FIRE POTENTIAL:
The overlapping of humidity’s between 8 to 15% and winds of 20 to 30 mph this afternoon will pose a threat for a large fire for the Mojave Desert and Death Valley, but the scarce population of fuels through these areas will act as a limiting factor. The excessive heat and barren conditions expected next week will result in an increase in initial attack activity. Additionally, in response to the upcoming hot and dry spell, dead fuels will drastically dry out and dip below their respective average fuel moisture content for this time of year. However, large fire potential will remain low due to the absence of a strong wind component.

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

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APPLE VALLEY / HESPERIA-VICTOR VALLEY (CAZ260):
…EXCESSIVE HEAT WATCH IN EFFECT FROM MONDAY MORNING THROUGH FRIDAY EVENING…
TODAY… Sky/weather………Mostly sunny.
Max temperature…..79 to 89. 24 HR TREND……Little change.
Min humidity……..10 to 15 percent. 24 HR TREND……Up 10 percent.
WIND (20 FT)……..Winds west 11 to 21 mph. Gusts to 30 mph…becoming 35 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..48 to 55. 24 HR TREND……Down 3 degrees.
Max humidity……..45 to 55 percent. 24 HR TREND……Up 10 percent.
WIND (20 FT)……..Winds west 11 to 21 mph with gusts to 35 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..77 to 83. 24 HR TREND……Down 3 degrees.
Min humidity……..10 percent. 24 HR TREND……Down 10 percent.
WIND (20 FT)……..Winds north 6 to 12 mph with gusts to 25 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*WRIGHTWOOD:
Friday
Sunny, with a high near 66. Southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly clear, with a low around 44. West wind 10 to 15 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.
Saturday
Sunny, with a high near 66. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 48. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

*BIG PINES / WEST WRIGHTWOOD AREA
Friday
Sunny, with a high near 58. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 37. Wind chill values as low as 25. Breezy, with a west southwest wind 15 to 20 mph becoming northwest after midnight. Winds could gust as high as 25 mph.
Saturday
Sunny, with a high near 60. Wind chill values as low as 30 early. North wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Clear, with a low around 43. West northwest wind 5 to 10 mph becoming southwest in the evening.

*PHELAN:
…EXCESSIVE HEAT WATCH IN EFFECT FROM MONDAY MORNING THROUGH FRIDAY EVENING…
Friday
Sunny, with a high near 75. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 50. West wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.
Saturday
Sunny, with a high near 74. West wind 5 to 10 mph becoming north in the morning.
Saturday Night
Mostly clear, with a low around 53. North wind 5 to 10 mph becoming west in the evening. Winds could gust as high as 20 mph.

TRONA (INDIAN WELLS) (CAZ298):
…WIND ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM PDT FRIDAY…
…RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM PDT FRIDAY FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONES 227 AND 228…

FRIDAY… Sky/weather………Sunny.
Max Temperature…..80-85. 24 HR Trend……Little change.
Min Humidity……..13-23 percent. 24 HR Trend……Up 3-5 percent.
20-Foot Winds…….West 6-18 mph in the early morning increasing to 14-26 mph by afternoon gusting to 45 mph.
LAL……………..1. Ventilation………Excellent.
Mixing height…….7900 ft AGL. Transport Winds…..West around 15 mph in the morning increasing to around 30 mph in the afternoon.
Chc Wetting Rain….0 percent.

FRIDAY NIGHT… Sky/weather………Mostly clear.
Min Temperature…..51-56. 24 HR Trend……Down 1-3 degrees.
Max Humidity……..28-38 percent. 24 HR Trend……Down 5-11 percent.
20-Foot Winds…….West 14-26 mph in the early evening decreasing to 5-14 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

SATURDAY… Sky/weather………Sunny.
Max Temperature…..79-84. 24 HR Trend……Little change.
Min Humidity……..8-16 percent. 24 HR Trend……Down 3-9 percent.
20-Foot Winds…….North 3-6 mph in the early morning shifting to the east by afternoon.
LAL……………..1. Ventilation………Very good.
Mixing height…….9200 ft AGL. Transport Winds…..North around 20 mph in the morning decreasing to around 5 mph in the afternoon.
Chc Wetting Rain….0 percent.

BARSTOW / DAGGETT / BAKER / FT. IRWIN (CAZ228):
…WIND ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM PDT FRIDAY…
…RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM PDT FRIDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY…

FRIDAY… Sky/Weather………Sunny. Patchy blowing dust in the afternoon.
* Max temperature: Valley floor….92-97. 24 hr trend…..On average up 4 degrees.
* Min humidity: Valley floor….7-14 percent. 24 hr trend…..On average up 2 percent.
* Wind (Slope/valley=20 ft, 10 min avg): Valley floor….Southwest wind 10 to 15 mph with gusts to around 30 mph increasing to 15 to 25 mph with gusts to around 45 mph in the afternoon.
* 10000 ft msl….Southwest 20 to 30 mph.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..5.

FRIDAY NIGHT… Sky/Weather………Mostly clear.
* Min temperature: Valley floor….51-56. 24 hr trend…..On average down 3 degrees.
* Max humidity: Valley floor….29-34 percent. 24 hr trend…..On average down 3 percent.
* Wind (Slope/valley=20 ft, 10 min avg): Valley floor….West wind 10 to 20 mph. Gusts up to 45 mph decreasing to 30 mph after midnight.
* 10000 ft msl….West 20 to 30 mph decreasing to 10 to 15 mph after midnight.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..5.

SATURDAY… Sky/Weather………Sunny.
* Max temperature: Valley floor….87-92. 24 hr trend…..On average down 5 degrees.
* Min humidity: Valley floor….7-11 percent. 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg): Valley floor….North wind 10 to 15 mph. Gusts up to 25 mph in the morning.
* 10000 ft msl….Northwest 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..4.

*BAKER:
…RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM PDT FRIDAY FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONES 227 AND 228…
Friday
Sunny, with a high near 94. Breezy, with a south wind 8 to 13 mph becoming southwest 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.
Friday Night
Mostly clear, with a low around 61. Breezy, with a west southwest wind 16 to 21 mph becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 31 mph.
Saturday
Sunny, with a high near 89. North northwest wind 9 to 16 mph, with gusts as high as 22 mph.
Saturday Night
Clear, with a low around 61. North northwest wind 5 to 8 mph becoming calm after midnight.

SOUTHERN OWENS VALLEY / EAST SIERRA FOOTHILLS (CAZ226):
FRIDAY… Sky/Weather………Mostly sunny.
* Max temperature: Valley floor….82-87. 7000 feet…….66-71. 24 hr trend…..Little change.
* Min humidity: Valley floor….10-13 percent. 7000 feet…….17-27 percent. 24 hr trend…..On average down 3 percent.
* Wind (slope/valley=20 ft, 10 min avg): Slope/valley….Northwest winds around 10 mph with gusts to around 25 mph increasing to west 15 to 25 mph with gusts to around 45 mph in the afternoon.
* Upper slopes….West winds 10 to 15 mph with gusts to around 35 mph increasing to 15 to 25 mph with gusts to around 45 mph in the afternoon.
* 10000 ft msl….West 10 to 15 mph increasing to 15 to 20 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..5.

FRIDAY NIGHT… Sky/Weather………Mostly clear.
* Min temperature: Valley floor….43-48. 7000 feet…….19-24. 24 hr trend…..On average down 4 degrees.
* Max humidity: Valley floor….28-33 percent. 7000 feet…….40-45 percent. 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg): Slope/valley….North winds 10 to 15 mph. Gusts up to 40 mph decreasing to 25 mph after midnight.
* Upper slopes….Northwest winds 10 to 15 mph. Gusts up to 35 mph in the evening.
* 10000 ft msl….Northwest 10 to 15 mph.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..4.

SATURDAY… Sky/Weather………Sunny.
* Max temperature: Valley floor….79-84. 7000 feet…….65-70. 24 hr trend…..On average down 2 degrees.
* Min humidity: Valley floor….8-11 percent. 7000 feet…….15-25 percent. 24 hr trend…..On average down 2 percent.
* Wind (slope/valley=20 ft, 10 min avg): Slope/valley….Northeast winds 10 to 15 mph.
* Upper slopes….East winds up to 10 mph.
* 10000 ft msl….Northwest around 10 mph in the morning becoming light and variable.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..4.

KERN CO. DESERTS (CAZ299):
…WIND ADVISORY IN EFFECT FROM NOON TO 11 PM PDT FRIDAY…
FRIDAY… Sky/weather………Sunny.
Max Temperature…..76-81. 24 HR Trend……Down 2-4 degrees.
Min Humidity……..24-34 percent. 24 HR Trend……Up 4-10 percent.
20-Foot Winds…….West 7-19 mph in the early morning increasing to 13-25 mph by afternoon gusting to 45 mph.
LAL……………..1. Ventilation………Excellent.
Mixing height…….8200 ft AGL. Transport Winds…..West around 15 mph in the morning increasing to around 25 mph in the afternoon.
Chc Wetting Rain….0 percent.

FRIDAY NIGHT… Sky/weather………Mostly clear.
Min Temperature…..49-54. 24 HR Trend……Down 1-3 degrees.
Max Humidity……..33-43 percent. 24 HR Trend……Down 7-17 percent.
20-Foot Winds…….West 14-25 mph in the early evening decreasing to 6-18 mph.
LAL……………..1. Chc Wetting Rain….0 percent.

SATURDAY… Sky/weather………Sunny.
Max Temperature…..76-81. 24 HR Trend……Little change.
Min Humidity……..16-26 percent. 24 HR Trend……Down 4-10 percent.
20-Foot Winds…….Northwest 3-8 mph in the early morning shifting to the northeast 3-7 mph by afternoon.
LAL……………..1. Ventilation………Very good.
Mixing height…….9300 ft AGL. Transport Winds…..North around 15 mph in the morning decreasing to around 5 mph in the afternoon.
Chc Wetting Rain….0 percent.

INLAND EMPIRE (CAZ248):
.TODAY… Sky/weather………Mostly sunny.
Max temperature…..76 to 84. 24 HR TREND……Down 6 degrees.
Min humidity……..25 to 30 percent. 24 HR TREND……Up 15 percent.
WIND (20 FT)……..Winds southwest 6 to 15 mph. Gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Partly cloudy…becoming mostly cloudy. Patchy fog after midnight.
Min temperature…..50 to 57. 24 HR TREND……Down 1 degree.
Max humidity……..85 to 95 percent. 24 HR TREND……Up 20 percent.
WIND (20 FT)……..Winds south 6 to 13 mph. Gusts to 30 mph in the evening.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.SATURDAY… Sky/weather………Partly cloudy…becoming mostly sunny. Patchy fog in the morning.
Max temperature…..75 to 82. 24 HR TREND……Down 2 degrees.
Min humidity……..25 to 35 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds south 6 to 8 mph becoming west 6 to 13 mph with gusts to 25 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*DEVORE:
Friday
Sunny, with a high near 79. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 53. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 25 mph.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 78. North wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 57. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 25 mph.

*CHINO HILLS:
Friday
Sunny, with a high near 78. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 30 mph.
Friday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.
Saturday
Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 75. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind 10 to 15 mph becoming light south. Winds could gust as high as 25 mph.

*COLTON:
Friday
Sunny, with a high near 83. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. West wind 10 to 15 mph becoming light and variable. Winds could gust as high as 25 mph.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 58. West wind 10 to 15 mph becoming light in the evening. Winds could gust as high as 25 mph.

SAN BERNARDINO N.F. (CAZ255):
.TODAY… Sky/weather………Mostly sunny.
Max temperature…..61 to 71 above 6000 feet to 66 below 6000 feet. 24 HR TREND……Down 7 degrees.
Min humidity……..15 to 25 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 11 to 21 mph. Gusts to 30 mph…becoming 40 mph in the afternoon.
RIDGETOP………Winds west 6 to 11 mph with gusts to 25 mph becoming 11 to 21 mph with gusts to 40 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Mostly clear.
Min temperature…..33 to 43 above 6000 feet to 40 to 50 below 6000 feet. 24 HR TREND……Down 7 degrees.
Max humidity……..35 to 45 percent on desert slopes to 70 to 80 percent on coastal slopes.
24 HR TREND……Up 10 percent.
WIND (20 FT)……..
SLOPES………..Winds west 12 to 22 mph with gusts to 35 mph.
RIDGETOP………Winds west 12 to 22 mph with gusts to 40 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..57 to 67 above 6000 feet to 64 to 74 below 6000 feet. 24 HR TREND……Down 4 degrees.
Min humidity……..15 to 20 percent on desert slopes to 20 to 30 percent on coastal slopes.
24 HR TREND……Little change.
WIND (20 FT)……..
SLOPES………..Winds north 6 to 15 mph becoming west 6 to 11 mph in the afternoon. Gusts to 30 mph.
RIDGETOP………Winds north 6 to 10 mph with gusts to 20 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

*LAKE ARROWHEAD SCHOOL- AREA:
Friday
Sunny, with a high near 66. South wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly clear, with a low around 44. South wind 10 to 15 mph becoming light and variable. Winds could gust as high as 25 mph.
Saturday
Sunny, with a high near 67. North wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 48. Southwest wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 20 mph.

*BIG BEAR SCHOOL AREA:
Friday
Sunny, with a high near 64. Breezy, with a southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.
Friday Night
Mostly clear, with a low around 35. Southwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 35 mph.
Saturday
Sunny, with a high near 64. Northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 38. North wind 5 to 10 mph becoming light northwest.

BANNING PASS (CAZ265):
…EXCESSIVE HEAT WATCH IN EFFECT FROM MONDAY MORNING THROUGH FRIDAY EVENING…
TODAY… Sky/weather………Sunny.
Max temperature…..92 to 97. 24 HR TREND……Up 4 degrees.
Min humidity……..10 percent. 24 HR TREND……Little change.
WIND (20 FT)……..Winds west 13 to 23 mph. Gusts to 30 mph…becoming 45 mph in the afternoon.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.TONIGHT… Sky/weather………Clear.
Min temperature…..58 to 67. 24 HR TREND……Down 1 degree.
Max humidity……..35 to 45 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Winds west 13 to 23 mph with gusts to 45 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

.SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..90 to 95. 24 HR TREND……Down 3 degrees.
Min humidity……..10 to 15 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..Winds northwest 6 to 16 mph with gusts to 30 mph.
CWR (>0.10 IN)……0 percent. LAL……………..1.

JOSHUA TREE AREA (CAZ230):
…RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM PDT FRIDAY FOR STRONG WINDS AND LOW RH FOR FIRE WEATHER ZONES 227 AND 228…
FRIDAY… Sky/weather…………………Mostly sunny.
* Max Temperature……………..76-92. 24 hr trend………………Little change.
* Min Humidity………………..9-17 pct. 24 hr trend………………Little RH change.
* Winds – 20 foot…Slope/Valley..Southwest 5 to 10 mph in the morning becoming 10 to 20 mph in the afternoon.
* Winds…10000 FT MSL…………West 15 to 25 mph.
* Chance of Precip…………….0 percent. CWR (>= 0.10 IN)…………….0 percent. LAL………………………..1.
* Haines High Level Index………5 moderate potential for large plume dominated fire growth.

FRIDAY NIGHT… Sky/weather…………………Clear.
* Min Temperature……………..49-61. 24 hr trend………………Little change.
* Max Humidity………………..31-43 pct. 24 hr trend………………5 pct wetter.
* Winds – 20 foot…Slope/Valley..West 10 to 20 mph in the evening becoming northwest 5 to 10 mph after midnight.
* Winds…10000 FT MSL…………West 10 to 20 mph.
* Chance of Precip…………….0 percent. CWR (>= 0.10 IN)…………….0 percent. LAL………………………..1.

SATURDAY… * Sky/weather…………………Sunny.
* Max Temperature……………..75-88. 24 hr trend………………Little change.
* Min Humidity………………..11-17 pct. 24 hr trend………………Little RH change.
* Winds – 20 foot…Slope/Valley..Northwest 5 to 15 mph.
* Winds…10000 FT MSL…………West 10 to 20 mph.
* Chance of Precip…………….0 percent. CWR (>= 0.10 IN)…………….0 percent. LAL………………………..1.
* Haines High Level Index………3 very low potential for large plume dominated fire growth.

NEEDLES, RIVER BAT. (CAZ229):
FRIDAY… Sky/Weather………Sunny.
* Max temperature: Valley floor….96-101. 24 hr trend…..On average up 3 degrees.
* Min humidity: Valley floor….5-11 percent. 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg): Valley floor….South wind 10 to 20 mph. Gusts up to 25 mph increasing to 35 mph in the afternoon.
* 10000 ft msl….Southwest 20 to 30 mph increasing to 25 to 35 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..5.
* Mixing height…….11900 ft agl. Transport winds…..South around 10 knots increasing to 15 to 20 knots in the afternoon.
* Ventilation………Excellent.

FRIDAY NIGHT… Sky/Weather………Mostly clear.
* Min temperature: Valley floor….59-64. 24 hr trend…..Little change.
* Max humidity: Valley floor….29-34 percent. 24 hr trend…..On average up 11 percent.
* Wind (Slope/valley=20 ft, 10 min avg): Valley floor….Southwest wind 10 to 15 mph with gusts to around 30 mph shifting to the northwest after midnight.
* 10000 ft msl….Southwest 20 to 30 mph decreasing to 15 to 20 mph after midnight.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..4.

SATURDAY…Sky/Weather………Sunny.
* Max temperature: Valley floor….91-96. 24 hr trend…..On average down 5 degrees.
* Min humidity: Valley floor….6-12 percent. 24 hr trend…..Little change.
* Wind (Slope/valley=20 ft, 10 min avg): Valley floor….Northwest wind 10 to 15 mph.
* 10000 ft msl….West 10 to 20 mph becoming 10 to 15 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..4.
* Mixing height…….9600 ft agl. Transport winds…..North 10 to 15 knots.
* Ventilation………Excellent.

STATELINE – CLARK COUNTY BORDER (NVZ465):
FRIDAY… Sky/Weather………Sunny.
* Max temperature: 4000 feet…….88-93. 24 hr trend…..On average up 5 degrees.
* Min humidity: 4000 feet…….8-11 percent. 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg): Slope/valley….South winds 10 to 15 mph with gusts to around 30 mph shifting to the southwest 15 to 25 mph with gusts to around 40 mph in the afternoon.
* 10000 ft msl….Southwest 25 to 35 mph increasing to 35 to 45 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..5.
* Mixing height…….10100 ft agl. Transport winds…..Southwest 10 to 15 knots increasing to 20 to 25 knots in the afternoon.
* Ventilation………Excellent.

FRIDAY NIGHT… Sky/Weather………Partly cloudy.
* Min temperature: 4000 feet…….50-55. 24 hr trend…..On average down 4 degrees.
* Max humidity: 4000 feet…….30-35 percent. 24 hr trend…..On average up 9 percent.
* Wind (slope/valley=20 ft, 10 min avg): * Slope/valley….Southwest winds 15 to 20 mph with gusts to around 40 mph shifting to the northwest 10 to 15 mph with gusts to around 30 mph after midnight.
* 10000 ft msl….West 20 to 30 mph decreasing to 15 to 25 mph after midnight.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..5.

SATURDAY… Sky/Weather………Sunny.
* Max temperature: 4000 feet…….82-87. 24 hr trend…..On average down 6 degrees.
* Min humidity: 4000 feet…….8-11 percent. 24 hr trend…..Little change.
* Wind (slope/valley=20 ft, 10 min avg): Slope/valley….North winds 10 to 15 mph.
* 10000 ft msl….Northwest 10 to 20 mph becoming 10 to 15 mph in the afternoon.
* CWR (>= 0.10 in)….0 percent. LAL……………..1. Haines Index……..4.
* Mixing height…….10100 ft agl. Transport winds…..North 10 to 15 knots.
* Ventilation………Excellent.

*La Jolla Ca
Friday
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 68. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Increasing clouds, with a low around 59. South wind 5 to 10 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 67. South wind 5 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 58. West wind around 5 mph becoming calm.

*Poway Ca
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Increasing clouds, with a low around 57. South wind 5 to 10 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 76. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Saturday Night
Increasing clouds, with a low around 56. West wind around 5 mph becoming calm in the evening.

*Cedar City Ut.
.DAYS TWO THROUGH SEVEN…Friday through Wednesday

A new storm system will reach the outlook area from the Pacific Northwest late Friday. A strong cold front will sweep south across northern and western Utah Friday afternoon and evening, then stall across southern and eastern Utah by Saturday morning.

Rain and snow associated with this storm will concentrate across the northern half of the outlook area late Friday afternoon through Saturday morning. Unseasonably cool temperatures are expected to begin the holiday weekend. Snow levels will lower behind the cold front, leading to the potential for accumulating snows across the northern mountains. Temperatures could lower enough to bring brief periods of snow to the higher northern valleys and southwest Wyoming, along with the higher bench areas of the northern and central Wasatch Front urban corridor.

Temperatures on Saturday will run below to much below normal, with temperatures trending upward and approaching normal or higher readings by Memorial Day. Scattered showers, mainly across the northern and central mountains and adjacent valleys will be possible through Sunday, followed by drier conditions during the first half of the week. Temperatures will climb to reading above too much above normal by midweek.

Friday
Sunny, with a high near 73. Windy, with a south southwest wind 7 to 17 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 45 mph.
Friday Night
Partly cloudy, with a low around 39. Windy, with a south southwest wind 20 to 30 mph becoming north northwest 7 to 12 mph. Winds could gust as high as 45 mph.
Saturday
Mostly sunny, with a high near 65. North wind 7 to 10 mph.
Saturday Night
Mostly clear, with a low around 38. North northeast wind 6 to 11 mph.

*************************** L.A COUNTY ********************************
…GUSTY WINDS THROUGH SATURDAY…
LOS ANGELS CO. SAN GABRIEL VALLEY (CAZ548):
FRIDAY… Sky/weather………Sunny except areas of morning low clouds and og.
Max temperature…..75-80. 24 hr trend……Down 5.
Min humidity……..40-50 percent. 24 hr trend……Up 12.
20-foot winds…….Variable 3-6 mph becoming southwest 6-12 mph with local gusts to 20 mph in the afternoon.
Marine layer……..1500 ft asl. LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY NIGHT… Sky/weather………Clear except areas of low clouds and fog after midnight.
Min temperature…..51-57.
Max humidity……..80-100 percent.
20-foot winds…….Southwest 6-12 mph with local gusts to 20 mph early becoming variable 3-6 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SATURDAY… Sky/weather………Mostly sunny except areas of morning low clouds and fog.
Max temperature…..75-81.
Min humidity……..40-50 percent.
20-foot winds…….Variable 3-6 mph becoming southwest 6-12 mph with local gusts to 20 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

LOS ANGELES COUNTY SAN FERNANDO VALLEY (CAZ547):
FRIDAY… Sky/weather………Sunny except patchy morning low clouds and fog.
Max temperature…..74-80. 24 hr trend……Down 6.
Min humidity……..35-50 percent. 24 hr trend……Up 13.
20-foot winds…….Southeast 5-10 mph becoming south 6-12 mph late in the afternoon.
Marine layer……..1500 ft asl. LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY NIGHT… Sky/weather………Clear except areas of low clouds and fog after midnight.
Min temperature…..49-56.
Max humidity……..80-100 percent.
20-foot winds…….Southeast 6-12 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SATURDAY… Sky/weather………Mostly sunny except areas of morning low clouds and fog.
Max temperature…..78-83.
Min humidity……..25-45 percent.
20-foot winds…….East 6-12 mph becoming south 6-12 mph late in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SANTA CLARITA VALLEY (CAZ288):
FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..78-82. 24 hr trend……Down 7.
Min humidity……..30-40 percent. 24 hr trend……Up 16.
20-foot winds…….Northwest 6-12 mph becoming south 8-15 mph with gusts to 25 mph in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY NIGHT… Sky/weather………Mostly clear.
Min temperature…..48-52.
Max humidity……..60-80 percent.
20-foot winds…….Southwest 8-15 mph with gusts to 25 mph early becoming northwest 6-12 mph late.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..81-85.
Min humidity……..12-20 percent.
20-foot winds…….Northeast 6-12 mph becoming southwest late in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SANTA MONICA MOUNTAINS RECREATIONAL AREA (CAZ246):
FRIDAY… Sky/weather………Partly cloudy then becoming mostly sunny.
Max temperature…..72-80 except 66-68 coastal slopes and higher peaks. 24 hr trend……Down 6.
Min humidity……..40-60 percent. 24 hr trend……Up 17.
20-foot winds……. Valleys/lwr slopes…East 6-12 mph becoming southwest 6-12 mph with local canyon gusts to 25 mph in the afternoon.
Ridges/upr slopes….East 6-12 mph becoming southwest 8-15 mph in the afternoon.
Marine layer……..1500 ft asl. LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY NIGHT… Sky/weather………Mostly clear then low clouds and fog after midnight.
Min temperature…..48-55.
Max humidity……..80-100 percent.
20-foot winds……. Valleys/lwr slopes…Southwest 6-12 mph with local canyon gusts to 20 mph early in the evening becoming southeast 6-12 mph.
Ridges/upr slopes….South 8-15 mph in the evening becoming ast 6-12 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SATURDAY… Sky/weather………Morning low clouds and fog then mostly sunny.
Max temperature…..69-79.
Min humidity……..30-45 percent except 50-60 percent coastal slopes and higher peaks.
20-foot winds……. Valleys/lwr slopes…Variable 3-6 mph becoming southwest 6-12 mph with local canyon gusts to 25 mph in the afternoon.
Ridges/upr slopes….Variable 3-6 mph becoming southwest 6-12 mph in the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANGELES NATIONAL FOREST (CAZ254):
FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..69-79 low elevations to 58-65 higher elevations. 24 hr trend……Down 6.
Min humidity……..35-50 percent except 20-30 percent higher peaks and warmer valleys. 24 hr trend……Up 13.
20-foot winds……. Valleys/lwr slopes…West 10-20 mph with gusts to 25 mph becoming 15-25 mph with gusts to 35 mph late in the afternoon.
Ridges/upr slopes….West 10-20 mph with gusts to 25 mph becoming 15-25 mph with gusts to 35 mph late in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY NIGHT… Sky/weather………Mostly clear.
Min temperature…..43-51 low elevations to 33-41 colder valleys and peaks.
Max humidity……..45-65 percent except 80-100 percent colder valleys.
20-foot winds……. Valleys/lwr slopes…Northwest 15-25 mph with gusts to 35 mph. Strongest through the I-5 Corridor.
Ridges/upr slopes….Northwest 15-25 mph with gusts to 35 mph. Isolated gusts to 50 mph near Whitaker Peak.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..71-81 low elevations to 60-67 higher elevations.
Min humidity……..25-45 percent except 15-25 percent higher peaks and warmer valleys.
20-foot winds……. Valleys/lwr slopes…North 10-20 mph with gusts to 25 mph. Strongest through the I-5 Corridor.
Ridges/upr slopes….North 15-25 mph with gusts to 35 mph becoming 10-20 mph with gusts to 25 mph in the afternoon. Isolated gusts to 45 mph near Whitaker Peak.
LAL……………..1. CWR (>0.10 IN)……0 percent.

ANTELOPE VALLEY (CAZ259):
FRIDAY… Sky/weather………Mostly sunny.
Max temperature…..74-82. 24 hr trend……Down 5.
Min humidity……..20-30 percent. 24 hr trend……Up 13.
20-foot winds…….West 10-20 mph with gusts to 30 mph becoming southwest 20-30 mph with gusts to 45 mph in the afternoon.
Marine layer……..None. LAL……………..1. CWR (>0.10 IN)……0 percent.

FRIDAY NIGHT… Sky/weather………Mostly clear.
Min temperature…..43-50.
Max humidity……..65-80 percent except 50-60 percent in the hills.
20-foot winds…….West 20-30 mph with gusts to 40 mph.
LAL……………..1. CWR (>0.10 IN)……0 percent.

SATURDAY… Sky/weather………Mostly sunny.
Max temperature…..74-81.
Min humidity……..8-15 percent.
20-foot winds…….Northwest 6-12 mph becoming north with gusts to 25 mph by the afternoon.
LAL……………..1. CWR (>0.10 IN)……0 percent.

============================================================
THIS DAY IN WEATHER HISTORY:
2008: Heavy rain from thunderstorms was produced by a very cold and unstable storm from the north. Several debris flows occurred. In the Santiago burn area of eastern Orange County, extensive damage was done to homes and businesses. In rural northeast Moreno Valley, 28 residences were flooded and damaged. Minor damage occurred in the Witch Creek burn area around Ramona. Snowfall of several inches hit the mountains, even as low as 5000 feet elevation. Thunderstorms deposited several inches of hail from Redlands to Perris. Several reports of nickel size hail in Moreno Valley and dime size hail in Murrieta. Snowplows were called to clear the hail. Awnings, trees and vehicles were damaged. Four tornadoes touched down near Moreno Valley. One tornado was rated EF-2, which was the strongest California tornado since the Sunnyvale tornado in 1998, and was on the ground for an exceptional 21 minutes. Nine railroad cars were derailed. A semi-truck was lifted 30-40 feet in the air and severely injured the driver. Damage was done to roofs, trailers and sheds.

1992: A persistent thunderstorm over Hemet produced hail accumulations of three to six inches. The hail damaged several gliders at a nearby airport and combined with 1.10 inches of rain to produce street flooding.

1921: 1.19 inches of rain fell in Santa Ana, the greatest daily amount on record for May. Interestingly, no measurable rain had fallen on this date from 1933 to 2006 (when 0.70 inch fell).

==================================================================
TROPICAL EAST PACIFIC REPORT:
Tropical cyclone formation is not expected during the next 5 days.

======================================================================
CURRENT WEATHER @ HESP. @ 0740 Hrs. TEMP: 630 RH: 44% WIND: W 5 G14
7.20” RF @ HESP. STA.SINCE OCT. 1st/20 Yr Avg: 7.12” : MONTH: 0.00” YTD S/F: 4.50”
=================================================================
FIRES: UPDATED

National Preparedness Level (PL 1 )

National Fire Activity:
Initial attack activity: Light (94 new fires)
New large incidents: 1
Large fires contained: 2
Uncontained large fires:*** 8
Area Command teams committed: 0
NIMOs committed: 1
Type 1 IMTs committed: 0
Type 2 IMTs committed: 1

Active Incident Resource Summary
GACC Incidents Cumulative Acres Crews Engines Helicopters Total Personnel
AICC 0 0 0 0 0 0
NWCC 0 0 0 0 0 0
ONCC 0 0 0 0 0 0
OSCC 0 0 0 0 0 0
NRCC 0 0 0 0 0 0
GBCC 5 41,541 0 4 3 41
SWCC 1 1,492 6 12 3 220
RMCC 2 9,565 2 12 0 66
EACC 1 2,107 0 5 0 10
SACC 14 41,127 3 25 3 278
Total 23 95,842 11 58 9 615

CDF FIRES TO DATE (STATE LANDS SRA)

Number of Fires and Acres:
Interval Fires Acres
January 1, 2020 through May 17, 2020 1,321 1,542
January 1, 2019 through May 17, 2019 916 4,094
5-Year Average (same interval) 1,098 5,818
2020 Combined YTD (CALFIRE & US Forest Service) 1,486 2,201

Southern California Area (PL 1 )
No Reportable Incidents

Northern California Area (PL 1 )
No Reportable Incidents

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