FIRE SERVICE WEATHER FORECAST:

…RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 4 AM PST
WEDNESDAY FOR ALL MOUNTAIN AREAS, THE INLAND EMPIRE, SAN DIEGO
COUNTY VALLEYS, AND INLAND ORANGE COUNTY…

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Gusty winds, low humidity, and dry fuels will lead to critical fire weather conditions away from the coast through  Wednesday morning, highest risk on Tuesday. Moderate to locally strong Santa Ana winds are expected. Winds will be predominately from the north to northeast today before becoming more east to northeast tonight into Tuesday. Winds
will peak in strength late tonight through Tuesday afternoon, and gradually fade through Wednesday. Strongest winds will occur on mountain foothills, through passes, and into adjacent inland valleys. Gusts 50 to 65 mph expected through favored passes and on mountain foothills, isolated gusts to 70 mph are expected Tuesday during the peak of the event in typically wind prone locations. Gusts of 35 to 50 mph are expected in the Inland Empire below the Cajon and San Gorgonio Passes and inland Orange County east of I-5. Gusts 40 to 55 mph, locally up to 60 mph are expected Tuesday in the San Diego County valleys with the strongest winds east of Poway and Escondido.

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Relative humidity this afternoon is expected to fall to 15 to 25 percent for inland areas north of San Diego County. By Tuesday afternoon, relative humidity values will fall to 5 to 10 percent for inland areas and 15 to 20 percent at the coast. Overnight humidity recovery will be poor, only increasing to 15 to 30 percent Tuesday night into Wednesday.

Wednesday will see lighter winds but humidity will still fall to 7 to 15 percent in the afternoon. Humidity is expected to recover into Thursday with inland afternoon relative humidity values 15 to 25 percent. Further humidity recovery is expected into Friday.

Fire Weather Forecast for the San Bernardino County Mountains

.TODAY…Sky/weather………Mostly sunny.
Max temperature…..46 to 56 above 6000 feet to 54 to 64 below 6000 feet. 24 HR TREND……Down 7 degrees.
Min humidity……..10 to 15 percent. 24 HR TREND……Little change.
WIND (20 FT)……..SLOPES………..Winds northeast 7 to 17 mph with gusts to 30 mph.
RIDGETOP………Winds north 7 to 17 mph with gusts to 25 mph.

.TONIGHT…Sky/weather………Clear.
Min temperature…..22 to 32 above 6000 feet to 29 to 39 below 6000 feet. 24 HR TREND……Down 8 degrees.
Max humidity……..15 to 25 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..SLOPES………..Winds northeast 12 to 22 mph with gusts to 35 mph.
RIDGETOP………Winds northeast 14 to 24 mph with gusts to 40 mph.
.TUESDAY…
Sky/weather………Sunny.
Max temperature…..44 to 54 above 6000 feet to 51 to 61 below 6000 feet. 24 HR TREND……Down 5 degrees.
Min humidity……..5 to 10 percent. 24 HR TREND……Down 5 percent.
WIND (20 FT)……..SLOPES………..Winds east 12 to 22 mph with gusts to 40 mph.
RIDGETOP………Winds east 12 to 22 mph. Gusts to 40 mph…becoming 30 mph in the afternoon.

FORECAST DAYS 3 THROUGH 7..SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED

.TUESDAY NIGHT…Mostly clear. Lows in the upper 30s. East winds around 6 mph.
.WEDNESDAY…Partly cloudy. Highs in the lower 50s. Light winds.
.WEDNESDAY NIGHT…Partly cloudy. Lows in the upper 30s. Light winds.
.THURSDAY…Mostly sunny. Highs in the lower 50s. Light winds.
.THURSDAY NIGHT…Mostly clear. Lows in the mid 30s. Light winds.
.FRIDAY…Mostly sunny. Highs in the lower 50s. Light winds.
.FRIDAY NIGHT…Mostly clear. Lows in the upper 30s.
.SATURDAY…Partly cloudy. Highs in the mid 50s.
.SATURDAY NIGHT…Mostly clear. Lows in the upper 30s.
.SUNDAY…Mostly sunny. Highs in the lower 50s.

SEVERE WEATHER OUTLOOK