Weather World
Gibraltar Reservoir Weather Advisories
WEATHER ALERT
Issue Date: 1030 PM PDT Thu Aug 27 2026
EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY
WHAT
Hot daytime conditions with high temperatures between 100 and 110 common. Warm overnight conditions will bring less relief than usual. WHERE
Most mountains and valleys of Los Angeles, Ventura, and Santa Barbara Counties. WHEN
Until 8 PM PDT Friday. IMPACTS
There is a high risk for dangerous heat illness, especially for sensitive groups like the very young, the very old, those without air conditioning, and those active outdoors.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Limit strenuous activities to early morning or evening hours. Take action when you see symptoms of heat exhaustion. &&
EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY
WHAT
Hot daytime conditions with high temperatures between 100 and 110 common. Warm overnight conditions will bring less relief than usual. WHERE
Most mountains and valleys of Los Angeles, Ventura, and Santa Barbara Counties. WHEN
Until 8 PM PDT Friday. IMPACTS
There is a high risk for dangerous heat illness, especially for sensitive groups like the very young, the very old, those without air conditioning, and those active outdoors.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Limit strenuous activities to early morning or evening hours. Take action when you see symptoms of heat exhaustion. &&
WEATHER ALERT
Issue Date: 133 PM PDT Thu Aug 27 2026
RED FLAG WARNING REMAINS IN EFFECT UNTIL 3 PM PDT FRIDAY FOR EXTREME HEAT AND INSTABILITY ALONG WITH LOCALLY GUSTY WINDS AND LOW HUMIDITIES FOR THE INTERIOR MOUNTAINS AND ADJACENT FOOTHILLS OF LOS ANGELES, VENTURA, AND SANTA BARBARA COUNTIES, AND CUYAMA VALLEY
TEMPERATURES
Highs 100 to 110 across the lower mountains, adjacent foothills and the Cuyama Valley, and 85 to 95 across higher mountains. Very deep mixing heights of 12,000 to 17,000 feet today, slightly lower on Friday. WINDS
Local west to north winds 15 to 25 mph with gusts up to 35 mph at times, strongest across the I-5 and Highway 33 corridors. A slightly stronger northerly wind push is possible late tonight into Friday morning, with gusts up to 40 mph possible across the I-5 corridor and other favored interior mountain passes. RELATIVE HUMIDITY
Minimum humidities 12 to 25 percent. Poor recoveries overnight hours in the mountains and foothills with humidities in the 15 to 30 percent range. IMPACTS
There is a significant risk of large plume dominated fires with rapid fire spread and extreme fire behavior. There is a history of large plume dominated fires this time of year with similar weather and fuel conditions, including the Bridge, Bobcat, and Station fires.
PRECAUTIONARY/PREPAREDNESS ACTIONS
A Red Flag Warning means that critical fire weather conditions will occur shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. &&
RED FLAG WARNING REMAINS IN EFFECT UNTIL 3 PM PDT FRIDAY FOR EXTREME HEAT AND INSTABILITY ALONG WITH LOCALLY GUSTY WINDS AND LOW HUMIDITIES FOR THE INTERIOR MOUNTAINS AND ADJACENT FOOTHILLS OF LOS ANGELES, VENTURA, AND SANTA BARBARA COUNTIES, AND CUYAMA VALLEY
TEMPERATURES
Highs 100 to 110 across the lower mountains, adjacent foothills and the Cuyama Valley, and 85 to 95 across higher mountains. Very deep mixing heights of 12,000 to 17,000 feet today, slightly lower on Friday. WINDS
Local west to north winds 15 to 25 mph with gusts up to 35 mph at times, strongest across the I-5 and Highway 33 corridors. A slightly stronger northerly wind push is possible late tonight into Friday morning, with gusts up to 40 mph possible across the I-5 corridor and other favored interior mountain passes. RELATIVE HUMIDITY
Minimum humidities 12 to 25 percent. Poor recoveries overnight hours in the mountains and foothills with humidities in the 15 to 30 percent range. IMPACTS
There is a significant risk of large plume dominated fires with rapid fire spread and extreme fire behavior. There is a history of large plume dominated fires this time of year with similar weather and fuel conditions, including the Bridge, Bobcat, and Station fires.
PRECAUTIONARY/PREPAREDNESS ACTIONS
A Red Flag Warning means that critical fire weather conditions will occur shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. &&
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