Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Los Angeles, CA
Issued by NWS Los Angeles, CA
066
FNUS56 KLOX 212158
FWFLOX
Fire Weather Planning Forecast For Southwestern California
National Weather Service Los Angeles/Oxnard CA
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY FOR AN
UNSEASONABLY HOT AND UNSTABLE AIR MASS CAPABLE OF PRODUCING
EXTREME FIRE BEHAVIOR FROM VERTICAL PLUME GROWTH...LOW RELATIVE
HUMIDITY...AND LOCALLY BREEZY WINDS FOR PORTIONS OF THE MOUNTAINS
AND FOOTHILLS OF LOS ANGELES, VENTURA, SANTA BARBARA, AND SAN
LUIS OBISPO COUNTIES...
...LONG DURATION HEATWAVE WITH WIDESPREAD ELEVATED FIRE WEATHER
CONDITIONS INCLUDING POTENTIAL FOR LARGE PLUME DOMINATED FIRES AWAY FROM
THE COAST THROUGH SUNDAY...
.DISCUSSION...
High pressure over the four corners states expanding westward over the
region is resulting in a long duration and dangerous heatwave through
Sunday. Temperatures will continue to increase and peak today and
Friday. With onshore flow expected to be weaker with this event, heat
impacts will likely spread to inland portions of the coastal plain,
where temperatures between 90 and 100 degrees will be likely. During the
peak of the heatwave, temperatures could soar to between 98 and 110
degrees for the valleys, lower mountains, and deserts, with minimum
humidities generally ranging between 8 and 20 percent, and mixing
heights potentially rising to between 12,000 and 17,000 feet across the
interior.
While widespread strong winds are not anticipated with this upcoming
heat wave, the combination of hot temperatures, low humidities
(including poor overnight recoveries in the mountains and foothills),
instability, locally breezy conditions, and critically dry fuels away
from the coast will likely bring widespread elevated fire weather
conditions away from the immediate coast. Additionally, the
aforementioned parameters will bring the threat of large plume dominated
fires (especially in the mountains and foothills), capable of rapid
fire growth and extreme fire behavior, including the potential for
pyrocumulus development.
The highest risk areas will be the mountains and foothills of Los
Angeles, Ventura, Santa Barbara, and San Luis Obispo counties, as well
as Santa Clarita Valley and Cuyama Valley, where Red Flag Warnings are
in effect. The Red Flag Warning areas cover areas that have been
climatologically notorious areas for large plume-dominated fires in
similar weather patterns to what is coming later this week.
Moreover, the western edge of a southwest-states monsoonal moisture
influx will overlie Los Angeles and Ventura Counties, which will
contribute to the development of atmospheric buoyancy Friday through
Sunday without significantly moistening the airmass -- i.e., displaced
away from the core of the moisture source. While lightning-induced fire
ignitions are a distinctive possibility on the peripheries of rain
cores, the increase in buoyancy will further aid in large vertical plume
growth accompanied by potential pyrocumulus development and related
extreme fire behavior. With any thunderstorm that forms, gusty and
erratic winds as well as heavy downpours or flash flooding will be
possible. While minimum humidities will be between 10 and 25 percent
during the weekend for a majority of the areas away from the coast,
higher elevation mountains (mainly above 6000 ft) may see humidities
rise to 20 to 40 percent as the monsoonal moisture moves in.
CAZ362-366>368-221200-
Malibu Coast-Los Angeles County Beaches-Palos Verdes Hills-
Los Angeles County Inland Coast including Downtown Los Angeles-
Including the cities of Malibu, Pacific Palisades, LAX, Long Beach,
Redondo Beach, Santa Monica, Torrance, Rancho Palos Verdes,
Beverly Hills, Compton, Culver City, Downey, Hollywood, and Norwalk
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....65-72.
24 hr trend......Little change.
Max humidity........65-85 percent.
24 hr trend......Down 14.
20-foot winds.......Southwest 5-10 mph early becoming variable 3-6
mph.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....80-85 beaches to 90-100 inland.
24 hr trend......Little change.
Min humidity........55-65 percent beaches to 30-55 percent inland.
24 hr trend......Down 4.
20-foot winds.......Variable 3-6 mph becoming southwest 8-15 mph
with gusts to 25 mph in the afternoon.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....65-72.
Max humidity........70-85 percent.
20-foot winds.......Southwest 5-10 mph early becoming variable 3-6
mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....79-84 beaches to 90-97 inland.
Min humidity........60-70 percent beaches to 40-60 percent inland.
20-foot winds.......Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ371>373-548-221200-
Calabasas and Agoura Hills-Western San Fernando Valley-
Eastern San Fernando Valley-Los Angeles County San Gabriel Valley-
Including the cities of Westlake Village, Malibu Lake, Northridge,
Woodland Hills, Van Nuys, Chatsworth, Burbank, Universal City,
Glendale, Sunland, La Canada Flintridge, East Los Angeles, El Monte,
Pasadena, Pomona, and San Gabriel
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....65-75.
24 hr trend......Little change.
Max humidity........55-75 percent except 40-55 percent in the
hills.
24 hr trend......Down 4.
20-foot winds.......Variable 3-6 mph.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....95-103 except 106-108 farthest inland.
24 hr trend......Up 4.
Min humidity........15-30 percent.
24 hr trend......Little change.
20-foot winds.......Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....63-71 except 74-76 in the hills.
Max humidity........50-70 percent.
20-foot winds.......Southwest 5-10 mph early becoming variable 3-6
mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny. Slight chance of rain.
Max temperature.....93-101 except 101-106 farthest inland.
Min humidity........20-40 percent.
20-foot winds.......Variable 3-6 mph becoming southwest 5-10 mph in
the afternoon.
CWR (>0.10 in)......10 percent.
$$
CAZ369-370-221200-
Western Santa Monica Mountains Recreational Area-
Eastern Santa Monica Mountains Recreational Area-
Including the cities of Malibu Bowl and Topanga
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....71-81 except 59-64 colder valleys.
24 hr trend......Little change.
Max humidity........40-60 percent except 65-75 percent colder
valleys and slopes.
24 hr trend......Up 20.
20-foot winds.......
Valleys.........South 5-10 mph in the evening becoming variable
3-6 mph.
Ridges..........South 5-10 mph in the evening becoming variable
3-6 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....88-101 except 82-87 closer to the coast.
24 hr trend......Little change.
Min humidity........20-40 percent except 40-55 percent closer to
the coast.
24 hr trend......Up 6.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....69-79 except 58-63 colder valleys.
Max humidity........50-70 percent except 70-80 percent colder
valleys and slopes.
20-foot winds.......
Valleys.........West 5-10 mph in the evening becoming variable 3-6 mph.
Ridges..........West 5-10 mph in the evening becoming variable 3-6 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....90-100 except 80-90 closer to the coast.
Min humidity........40-60 percent.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ354-355-221200-
Ventura County Beaches-Ventura County Inland Coast-
Including the cities of Oxnard, Point Mugu, Port Hueneme, Ventura,
Camarillo, and East Ventura
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....58-66 except 68-70 in the hills.
24 hr trend......Little change.
Max humidity........65-85 percent.
24 hr trend......Down 12.
20-foot winds.......Variable 3-6 mph.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....78-84 beaches to 85-95 inland.
24 hr trend......Little change.
Min humidity........55-65 percent beaches to 35-55 percent inland.
24 hr trend......Up 4.
20-foot winds.......Variable 3-6 mph becoming southwest 8-12 mph in
the afternoon.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....58-68.
Max humidity........75-85 percent.
20-foot winds.......West 5-10 mph in the evening becoming east.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....77-82 beaches to 83-93 inland.
Min humidity........65-75 percent beaches to 50-65 percent inland.
20-foot winds.......Variable 3-6 mph becoming southwest 8-12 mph in
the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ356>358-374-221200-
Lake Casitas-Ojai Valley-Central Ventura County Valleys-
Southeastern Ventura County Valleys-
Including the cities of Meiners Oaks, Oak View, Ojai, Fillmore, Piru,
Santa Paula, Moorpark, Newbury Park, Simi Valley, and Thousand Oaks
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....56-66 except 76-81 in the hills.
24 hr trend......Up 4.
Max humidity........55-70 percent except 35-50 percent in the
hills.
24 hr trend......Down 4.
20-foot winds.......Variable 3-6 mph.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....96-106 except 86-96 closer to the coast.
24 hr trend......Little change.
Min humidity........25-45 percent.
24 hr trend......Up 4.
20-foot winds.......Variable 3-6 mph becoming southwest 8-15 mph
with gusts to 25 mph in the afternoon.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....55-65 except 75-80 in the hills.
Max humidity........60-80 percent except 45-60 percent in the
hills.
20-foot winds.......West 5-10 mph early becoming variable 3-6 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....95-105 except 85-95 closer to the coast.
Min humidity........35-55 percent.
20-foot winds.......Variable 3-6 mph becoming southwest 5-10 mph in
the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ375-221200-
Santa Susana Mountains-
Including the city of Oat Mountain
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....70-81 except 65-70 colder valleys.
24 hr trend......Up 4.
Max humidity........35-55 percent.
24 hr trend......Little change.
20-foot winds.......Variable 3-6 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....95-104 except 88-93 colder hills.
24 hr trend......Up 4.
Min humidity........20-35 percent.
24 hr trend......Up 4.
20-foot winds.......Variable 3-6 mph becoming southwest 8-15 mph
with gusts to 25 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....70-79 except 64-69 colder valleys.
Max humidity........35-55 percent except 55-70 percent colder
valleys.
20-foot winds.......Southwest 5-10 mph early becoming variable 3-6
mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....93-101 except 87-89 colder hills.
Min humidity........25-40 percent.
20-foot winds.......Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ288-221200-
Santa Clarita Valley-
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....69-79.
24 hr trend......Little change.
Max humidity........35-45 percent.
24 hr trend......Down 8.
20-foot winds.......Variable 3-6 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....100-107.
24 hr trend......Little change.
Min humidity........15-25 percent.
24 hr trend......Up 4.
20-foot winds.......Variable 3-6 mph becoming southwest 8-15 mph
with gusts to 25 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....67-77.
Max humidity........40-55 percent.
20-foot winds.......Southwest 6-12 mph with gusts to 20 mph early
becoming north 5-10 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....98-105.
Min humidity........20-30 percent.
20-foot winds.......Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ379-380-221200-
Western San Gabriel Mountains and Highway 14 Corridor-
Eastern San Gabriel Mountains-
Including the cities of Acton, Warm Springs, Mill Creek, Mount Wilson,
Mount Baldy, Wrightwood, and The Angeles Crest Highway
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....73-82 except 67-72 colder valleys and slopes.
24 hr trend......Little change.
Max humidity........20-45 percent.
24 hr trend......Down 6.
20-foot winds.......
Valleys.........Southwest 6-12 mph with gusts to 20 mph in the
evening becoming variable 3-6 mph.
Ridges..........Southwest 6-12 mph with gusts to 20 mph in the
evening becoming variable 3-6 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny in the morning then partly cloudy. Slight
chance of rain showers and thunderstorms in the
afternoon.
Max temperature.....94-104 low elevations to 82-89 higher
elevations.
24 hr trend......Little change.
Min humidity........15-25 percent.
24 hr trend......Up 4.
20-foot winds.......
Valleys.........Southeast 6-12 mph becoming southwest 10-20 mph
with gusts to 30 mph in the afternoon.
Ridges..........Southeast 6-12 mph becoming southwest 10-20 mph
with gusts to 30 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......10 percent.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy in the evening then clear. Slight
chance of rain showers and thunderstorms in the
evening.
Min temperature.....71-81 except 65-70 colder valleys and slopes.
Max humidity........25-40 percent except 45-60 percent colder
valleys and slopes.
20-foot winds.......
Valleys.........South 6-12 mph.
Ridges..........South 6-12 mph.
CWR (>0.10 in)......10 percent.
.SATURDAY...
Sky/weather.........Partly cloudy. Slight chance of rain in the
morning. Slight chance of rain showers and
thunderstorms in the afternoon.
Max temperature.....90-101 low elevations to 80-89 higher
elevations.
Min humidity........20-40 percent.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......10 percent.
$$
CAZ383-221200-
Antelope Valley-
Including the cities of Palmdale, Lancaster, and Lake Los Angeles
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....71-81.
24 hr trend......Up 8.
Max humidity........25-35 percent.
24 hr trend......Down 4.
20-foot winds.......Southwest 8-15 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny in the morning then partly cloudy. Slight
chance of showers and thunderstorms in the
afternoon.
Max temperature.....101-109 except 98-100 cooler hills.
24 hr trend......Little change.
Min humidity........10-15 percent.
24 hr trend......Up 4.
20-foot winds.......Variable 3-6 mph becoming southwest 10-20 mph
with gusts to 30 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......10 percent.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy in the evening then clear. Slight
chance of showers and thunderstorms in the
evening.
Min temperature.....72-82.
Max humidity........25-35 percent.
20-foot winds.......Southwest 10-20 mph with gusts to 30 mph in the
evening becoming 8-15 mph.
CWR (>0.10 in)......10 percent.
.SATURDAY...
Sky/weather.........Partly cloudy. Slight chance of rain in the
morning, then slight chance of showers and
thunderstorms in the afternoon.
Max temperature.....98-108.
Min humidity........10-20 percent.
20-foot winds.......Southwest 6-12 mph.
CWR (>0.10 in)......10 percent.
$$
CAZ381-382-221200-
Western Antelope Valley Foothills-Eastern Antelope Valley Foothills-
Including the cities of Elizabeth Lake, Lake Palmdale, Valyermo, Llano,
and Pearblossom
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....68-76 except 80-82 in the hills.
24 hr trend......Up 4.
Max humidity........25-30 percent.
24 hr trend......Down 8.
20-foot winds.......Southwest 8-15 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny in the morning then partly cloudy. Slight
chance of showers and thunderstorms in the
afternoon.
Max temperature.....95-105.
24 hr trend......Little change.
Min humidity........10-20 percent.
24 hr trend......Little change.
20-foot winds.......South 5-10 mph becoming southwest 10-20 mph
with gusts to 30 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......10 percent.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy in the evening then clear. Slight
chance of showers and thunderstorms in the
evening.
Min temperature.....69-78 except 79-81 in the hills.
Max humidity........25-35 percent.
20-foot winds.......Southwest 10-20 mph with gusts to 30 mph.
CWR (>0.10 in)......10 percent.
.SATURDAY...
Sky/weather.........Partly cloudy. Slight chance of rain in the
morning, then slight chance of rain showers and
thunderstorms in the afternoon.
Max temperature.....93-103 except 89-92 cooler hills.
Min humidity........20-30 percent.
20-foot winds.......Southwest 6-12 mph.
CWR (>0.10 in)......10 percent.
$$
CAZ377-378-221200-
Northern Ventura County Mountains-Interstate 5 Corridor-
Including the cities of Lockwood Valley, Mount Pinos, Ozena,
Tejon Pass, Gorman, and Pyramid Lake
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....65-80 except 50-60 colder valleys and slopes.
24 hr trend......Up 22.
Max humidity........25-45 percent.
24 hr trend......Little change.
20-foot winds.......
Valleys.........Northwest 6-12 mph.
Ridges..........Northwest 6-12 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny in the morning then partly cloudy. Slight
chance of rain showers and thunderstorms in the
afternoon.
Max temperature.....95-105 low elevations to 85-95 higher
elevations.
24 hr trend......Little change.
Min humidity........10-20 percent.
24 hr trend......Up 4.
20-foot winds.......
Valleys.........South 8-15 mph with gusts to 25 mph.
Ridges..........South 8-15 mph with gusts to 25 mph.
Marine layer........None.
CWR (>0.10 in)......10 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....69-79 except 45-50 colder valleys and slopes.
Max humidity........30-50 percent.
20-foot winds.......
Valleys.........Southwest 8-15 mph with gusts to 25 mph in the
evening becoming northwest.
Ridges..........Southwest 8-15 mph with gusts to 25 mph in the
evening becoming northwest.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny in the morning then partly cloudy. Slight
chance of rain in the morning. Slight chance of
rain showers and thunderstorms in the
afternoon.
Max temperature.....90-103 low elevations to 80-90 higher
elevations.
Min humidity........15-25 percent.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming south 6-12 mph with
gusts to 20 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming south 6-12 mph with
gusts to 20 mph in the afternoon.
CWR (>0.10 in)......10 percent.
$$
CAZ353-376-221200-
Santa Barbara County Interior Mountains-
Southern Ventura County Mountains-
Including the cities of Big Pine Mountain, Figueroa Mountain,
San Rafael Mountain, Rose Valley, Matilija, and Topatopa Mountains
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....71-81 except 56-65 colder valleys and slopes.
24 hr trend......Up 4.
Max humidity........25-45 percent.
24 hr trend......Down 4.
20-foot winds.......
Valleys.........North 6-12 mph with gusts to 20 mph in the
evening becoming northeast.
Ridges..........North 6-12 mph with gusts to 20 mph in the
evening becoming northeast.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....96-106 low elevations to 87-95 higher
elevations.
24 hr trend......Little change.
Min humidity........15-25 percent.
24 hr trend......Up 6.
20-foot winds.......
Valleys.........South 6-12 mph.
Ridges..........South 6-12 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....69-79 except 53-63 colder valleys and slopes.
Max humidity........30-45 percent except 50-65 percent colder
valleys and slopes.
20-foot winds.......
Valleys.........Southwest 6-12 mph with gusts to 20 mph in the
evening becoming east.
Ridges..........Southwest 6-12 mph with gusts to 20 mph in the
evening becoming east.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....95-105 low elevations to 85-94 higher
elevations.
Min humidity........15-35 percent.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ351-221200-
Santa Ynez Mountains Western Range-
Including the city of San Marcos Pass
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....64-73 except 75-80 in the hills.
24 hr trend......Little change.
Max humidity........45-60 percent except 30-45 percent in the
hills.
24 hr trend......Down 4.
20-foot winds.......Northwest 8-15 mph with gusts to 25 mph early
becoming east 5-10 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....82-92.
24 hr trend......Down 4.
Min humidity........25-40 percent.
24 hr trend......Up 6.
20-foot winds.......South 6-12 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....63-71 except 72-77 in the hills.
Max humidity........55-75 percent except 35-50 percent in the
hills.
20-foot winds.......Northwest 5-10 mph early becoming variable 3-6
mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....82-92.
Min humidity........30-50 percent.
20-foot winds.......Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ349-221200-
Santa Barbara County Southwestern Coast-
Including the cities of El Capitan State Beach, Gaviota, Jalama Beach,
and Refugio State Beach
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....60-70 except 75-80 warmer hills.
24 hr trend......Little change.
Max humidity........65-85 percent except 55-65 percent in the
hills.
24 hr trend......Up 12.
20-foot winds.......Northwest 10-20 mph with gusts to 25 mph in the
evening becoming northeast 5-10 mph.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....77-86 except 87-92 warmer hills.
24 hr trend......Down 8.
Min humidity........40-60 percent.
24 hr trend......Up 8.
20-foot winds.......Variable 3-6 mph becoming west 10-15 mph in the
afternoon.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....58-68 except 69-78 warmer hills.
Max humidity........70-100 percent.
20-foot winds.......Northwest 8-15 mph in the evening becoming
variable 3-6 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....74-83 except 86-91 warmer hills.
Min humidity........45-65 percent.
20-foot winds.......Variable 3-6 mph becoming west 10-15 mph in the
afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ352-221200-
Santa Ynez Mountains Eastern Range-
Including the city of Montecito Hills
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....65-75 except 76-85 in the hills.
24 hr trend......Up 4.
Max humidity........35-55 percent.
24 hr trend......Down 12.
20-foot winds.......North 5-10 mph early becoming variable 3-6 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....95-105 except 84-94 closer to the coast.
24 hr trend......Little change.
Min humidity........20-40 percent.
24 hr trend......Up 4.
20-foot winds.......Southeast 5-10 mph becoming south 6-12 mph with
gusts to 20 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....63-73 except 79-84 in the hills.
Max humidity........55-75 percent except 35-50 percent in the
hills.
20-foot winds.......Variable 3-6 mph early becoming east 5-10 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....91-104 except 81-90 closer to the coast.
Min humidity........45-60 percent except 25-40 percent warmer
hills.
20-foot winds.......Variable 3-6 mph becoming southwest 5-10 mph in
the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ350-221200-
Santa Barbara County Southeastern Coast-
Including the cities of Carpinteria, Goleta, Montecito,
and Santa Barbara
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....59-67 except 68-70 warmer hills.
24 hr trend......Little change.
Max humidity........65-85 percent.
24 hr trend......Down 12.
20-foot winds.......Variable 3-6 mph.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....78-87 except 88-94 in the hills.
24 hr trend......Little change.
Min humidity........45-60 percent.
24 hr trend......Up 6.
20-foot winds.......Variable 3-6 mph becoming southwest 8-12 mph in
the afternoon.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....58-68.
Max humidity........75-90 percent.
20-foot winds.......Variable 3-6 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....77-86 except 87-92 in the hills.
Min humidity........55-75 percent.
20-foot winds.......Variable 3-6 mph becoming southwest 5-10 mph in
the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ340-341-346-347-221200-
San Luis Obispo County Beaches-
San Luis Obispo County Inland Central Coast-
Santa Barbara County Central Coast Beaches-
Santa Barbara County Inland Central Coast-
Including the cities of Arroyo Grande, Avila Beach, Cambria, Morro Bay,
Pismo Beach, Lopez Lake, Nipomo, San Luis Obispo, Lompoc,
Vandenberg Space Force Base, Buellton, and Santa Maria
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....50-60 except 69-74 in the hills.
24 hr trend......Down 4.
Max humidity........70-100 percent except 55-70 percent in the
hills.
24 hr trend......Down 26.
20-foot winds.......Northwest 6-12 mph in the evening becoming
variable 3-6 mph.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....67-77 beaches to 80-95 inland.
24 hr trend......Up 4.
Min humidity........55-65 percent beaches to 25-45 percent inland.
24 hr trend......Up 4.
20-foot winds.......Variable 3-6 mph becoming west 10-15 mph in the
afternoon.
Marine layer........600 ft asl.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....48-58 except 67-72 in the hills.
Max humidity........70-100 percent.
20-foot winds.......Northwest 6-12 mph in the evening becoming
variable 3-6 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....65-75 beaches to 81-91 inland.
Min humidity........70-80 percent beaches to 40-60 percent inland.
20-foot winds.......Variable 3-6 mph becoming west 8-12 mph in the
afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ348-221200-
Santa Ynez Valley-
Including the cities of Lake Cachuma, Los Olivos, Santa Ynez,
and Solvang
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....56-66 except 72-77 in the hills.
24 hr trend......Up 4.
Max humidity........50-70 percent except 40-50 percent in the
hills.
24 hr trend......Down 20.
20-foot winds.......Northwest 5-10 mph early becoming variable 3-6
mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....94-104 except 83-93 closer to the coast.
24 hr trend......Little change.
Min humidity........20-35 percent.
24 hr trend......Up 4.
20-foot winds.......Variable 3-6 mph becoming southwest 8-15 mph
with gusts to 25 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....54-64 except 70-75 in the hills.
Max humidity........60-80 percent.
20-foot winds.......West 5-10 mph early becoming variable 3-6 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....93-103 except 81-92 closer to the coast.
Min humidity........30-50 percent.
20-foot winds.......Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ342-343-221200-
Santa Lucia Mountains-Southern Salinas Valley-
Including the cities of Hearst Castle, Irish Hills, Atascadero,
Lake Nacimiento, Paso Robles, San Miguel, and Templeton
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....53-63 except 71-76 warmer hills.
24 hr trend......Little change.
Max humidity........35-50 percent except 55-65 percent colder
valleys and slopes.
24 hr trend......Up 4.
20-foot winds.......
Valleys.........North 6-12 mph.
Ridges..........North 6-12 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....95-105 except 75-80 closer to the coast.
24 hr trend......Down 4.
Min humidity........15-25 percent except 35-45 percent closer to
the coast.
24 hr trend......Up 4.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming southwest 8-15 mph
with gusts to 25 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming southwest 8-15 mph
with gusts to 25 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....52-62 except 68-73 warmer hills.
Max humidity........45-60 percent except 65-80 percent colder
valleys and slopes.
20-foot winds.......
Valleys.........West 5-10 mph in the evening becoming variable
3-6 mph.
Ridges..........West 5-10 mph in the evening becoming variable
3-6 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....93-103 except 72-77 closer to the coast.
Min humidity........20-40 percent except 45-60 percent closer to
the coast.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ238-345-221200-
Cuyama Valley-San Luis Obispo County Mountains-
Including the cities of Caliente Range, La Panza Range,
and Santa Margarita Lake
258 PM PDT Thu Aug 21 2025
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY...
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....70-79 except 62-67 colder valleys and slopes.
24 hr trend......Up 6.
Max humidity........25-45 percent.
24 hr trend......Down 4.
20-foot winds.......
Valleys.........North 6-12 mph with gusts to 20 mph in the
evening becoming east 6-12 mph.
Ridges..........North 6-12 mph with gusts to 20 mph in the
evening becoming east 6-12 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....101-108 low elevations to 91-100 higher
elevations.
24 hr trend......Little change.
Min humidity........15-25 percent.
24 hr trend......Little change.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming west 8-15 mph with
gusts to 25 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming west 8-15 mph with
gusts to 25 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....69-78 except 62-67 colder valleys and slopes.
Max humidity........30-50 percent.
20-foot winds.......
Valleys.........West 8-15 mph with gusts to 25 mph in the
evening becoming southeast.
Ridges..........West 8-15 mph with gusts to 25 mph in the
evening becoming southeast.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....99-106 low elevations to 89-98 higher
elevations.
Min humidity........15-35 percent.
20-foot winds.......
Valleys.........Variable 3-6 mph becoming west 6-12 mph with
gusts to 20 mph in the afternoon.
Ridges..........Variable 3-6 mph becoming west 6-12 mph with
gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
CAZ344-221200-
San Luis Obispo County Interior Valleys-
Including the cities of Carrizo Plain, Creston, and Shandon
258 PM PDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Clear.
Min temperature.....57-67 except 72-77 in the Carrizo Plain.
24 hr trend......Up 4.
Max humidity........30-50 percent.
24 hr trend......Down 14.
20-foot winds.......North 6-12 mph with gusts to 20 mph in the
evening becoming east 5-10 mph.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY...
Sky/weather.........Sunny.
Max temperature.....95-105.
24 hr trend......Up 4.
Min humidity........10-15 percent.
24 hr trend......Up 4.
20-foot winds.......Variable 3-6 mph becoming west 8-15 mph with
gusts to 25 mph in the afternoon.
Marine layer........None.
CWR (>0.10 in)......0 percent.
.FRIDAY NIGHT...
Sky/weather.........Clear.
Min temperature.....56-66 except 71-76 in the Carrizo Plain.
Max humidity........35-55 percent.
20-foot winds.......West 8-15 mph with gusts to 25 mph in the
evening becoming south 5-10 mph.
CWR (>0.10 in)......0 percent.
.SATURDAY...
Sky/weather.........Sunny.
Max temperature.....92-102.
Min humidity........15-20 percent.
20-foot winds.......Variable 3-6 mph becoming southwest 6-12 mph
with gusts to 20 mph in the afternoon.
CWR (>0.10 in)......0 percent.
$$
.Extended...
...Coasts/Valleys Including the Santa Monica Range...
.SUNDAY...Clear except night through morning low clouds and fog.
Lows in the upper 40s to mid 70s. Highs from the mid 60s to lower
70s at the beaches to 94 to 104 inland. Northwest winds 10 to 20 mph
with gusts to 30 mph.
.MONDAY...Clear except night through morning low clouds and fog.
Lows in the mid 50s to around 70. Highs from the mid 60s to around
70 at the beaches to the upper 80s to mid 90s inland. West winds 8
to 15 mph.
.TUESDAY...Clear except night through morning low clouds and fog.
Lows in the mid 50s to mid 60s. Highs from the mid 60s to around 70
at the beaches to the mid 80s to mid 90s inland. North winds 8 to 15
mph.
...Mountains / Los Padres and Angeles National Forests...
.SUNDAY...Clear. Slight chance of showers and thunderstorms. Lows
from the 70s to around 80 at low elevations to the mid 50s to around
60 in colder valleys and peaks. Highs from 93 to 103 at low
elevations to the upper 70s to mid 80s at high elevations. East
winds 10 to 20 mph with gusts to 30 mph.
.MONDAY...Clear. Slight chance of showers and thunderstorms. Lows
from the mid 60s to mid 70s at low elevations to the mid 50s to
around 60 in colder valleys and peaks. Highs from 90 to 100 at low
elevations to the upper 70s to mid 80s at high elevations. South
winds 10 to 20 mph with gusts to 30 mph.
.TUESDAY...Clear. Slight chance of showers and thunderstorms. Lows
from the mid 60s to lower 70s at low elevations to the 50s in colder
valleys and peaks. Highs from the mid 80s to mid 90s at low
elevations to the mid 70s to lower 80s at high elevations. South
winds 8 to 15 mph.
...Antelope Valley...
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 60s to mid 70s except around 80 in
the hills. Highs 99 to 108. Southwest winds 15 to 25 mph with gusts
to 35 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance of
thunderstorms. Lows in the upper 60s and 70s. Highs 95 to 102.
Southwest winds 15 to 25 mph with gusts to 35 mph.
.TUESDAY...Clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 60s to mid 70s. Highs 93 to 100.
Southwest winds 15 to 25 mph with gusts to 35 mph.
$$
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