Weather Alerts for SAN BERNADINO MTNS

Issued by the National Weather Service

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
SAN BERNADINO MTNS

Areas Affected:
San Bernardino County Mountains-Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest - San Bernardino and Riverside County Valleys - The Inland Empire - Santa Ana Mountains-Including The Trabuco Ranger District of the Cleveland National Forest
Effective: Sat 12:58 pm Updated: Sat 3:56 pm Urgency: Expected
Expires: Tue 6:00 pm Severity:  Severe  Certainty: Likely

 
Details:
...CRITICAL FIRE WEATHER CONDITIONS THROUGH TUESDAY BECAUSE OF
LOW HUMIDITY AND STRONG GUSTY WINDS...
.UPDATE...The wind speeds were raised Monday night into Tuesday
as the system looks a little stronger during that time. Hot and
dry Sunday and Monday with gusty offshore winds. The strongest
winds are forecast Monday night through midday Tuesday as high
pressure peaks over the northern Great Basin. Tuesday will also
be the hottest day with the lowest humidities. Winds will decrease
Wednesday and humidity will slowly rise Thursday and Friday.
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT TUESDAY FOR
STRONG GUSTY WINDS AND LOW HUMIDITY...
* WIND...Tonight and Sunday northeast winds 15 to 30 mph with
gusts to 45 near the coastal foothills and below passes and
canyons. Stronger and more widespread winds for Monday and
Tuesday with areas of northeast winds 25 to 35 mph with gusts
to 60 mph.
* HUMIDITY...5 to 10 percent Sunday...and around 5 percent Monday
and Tuesday with poorest overnight recovery in the windier
areas near the coastal foothills.
* TIMING...Through Tuesday...with the most extreme combination of
low humidity...stronger and more widespread winds...and heat on
Monday and Tuesday.
* OUTLOOK...Winds weaken Wednesday with some improvement in
humidity.
* IMPACTS...Any fires that develop will likely spread rapidly...
especially Monday and Tuesday. Outdoor burning is not
recommended.

Information:
A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.