US WX Alerts

Fire Weather Discussion

Fire Weather Planning Forecast For Extreme Southwestern California National Weather Service San Diego CA
220 AM PDT Thu May 26 2022

…Conditions approaching critical during afternoons and evenings through the weekend in parts of the mountains and deserts…

.DISCUSSION…
Onshore winds will increase over the next few days, becoming rather strong for the mountains and deserts, particularly on
desert mountain slopes and in the high desert. These winds will be strongest during afternoons and evenings, but should persist all night Saturday into Sunday. These winds will combine with dry air to generate briefly critical fire weather conditions in the
locally windiest pockets mainly through and in the lee of mountain passes. Winds decrease Monday.

Fire Weather Forecast for the San Bernardino County Mountains-
.TODAY…Sky/weather………Mostly sunny. Max temperature…..71 to 81 above 6000 feet to 76 to 86 below 6000 feet.
24 HR TREND……Down 4 degrees.
Min humidity……..15 to 25 percent. 24 HR TREND……Up 5 percent.
WIND (20 FT)……..SLOPES………..Winds south 10 to 20 mph. Gusts to 25 mph…becoming 35 mph in the afternoon.
RIDGETOP………Winds south 10 to 20 mph. Gusts to 30 mph.
.TONIGHT…Sky/weather………Clear…becoming partly cloudy.
Min temperature…..40 to 50 above 6000 feet to 50 to 60 below 6000 feet.
24 HR TREND……Down 4 degrees.Max humidity……..20 to 25 percent on desert slopes to 45 to 55 percent on coastal slopes.
24 HR TREND……Down 10 percent.
WIND (20 FT)……..SLOPES………..Winds southwest 10 to 20 mph with gusts to 35 mph.
RIDGETOP………Winds southwest 10 to 20 mph with gusts to 30 mph.
.FRIDAY…Sky/weather………Mostly sunny. Max temperature…..69 to 79 above 6000 feet to 78 to 88 below 6000 feet.
24 HR TREND……Down 6 degrees.
Min humidity……..10 to 15 percent on desert slopes to 15 to 25 percent on coastal slopes. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..SLOPES………..Winds west 9 to 19 mph. Gusts to 25 mph…becoming 35 mph in the afternoon.
RIDGETOP………Winds west 9 to 19 mph. Gusts to 25 mph in the afternoon.

SEVERE WEATHER OUTLOOK CONUS