Red Flag Warning
Issued by NWS San Diego, CA

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WWUS86 KSGX 170953
RFWSGX

URGENT - FIRE WEATHER MESSAGE
National Weather Service San Diego CA
153 AM PST Sun Dec 17 2017

...RED FLAG WARNING IN EFFECT FOR PORTIONS OF SAN BERNARDINO...
RIVERSIDE AND ORANGE COUNTIES FROM 8 AM TO 8 PM PST TODAY...

.Surface high pressure over the Great Basin will bring periods of
stronger and gusty northeast winds along and below coastal
mountain slopes through today along with lower humidities.

CAZ248-255>257-265-552-554-172230-
/O.CON.KSGX.FW.W.0007.171217T1600Z-171218T0400Z/
San Bernardino and Riverside County Valleys - The Inland Empire-
San Bernardino County Mountains-
Including The Mountain Top And Front Country Ranger Districts Of
The San Bernardino National Forest-Riverside County Mountains-
Including The San Jacinto Ranger District Of The San Bernardino
National Forest-Santa Ana Mountains-
Including The Trabuco Ranger District of the Cleveland National
Forest-San Gorgonio Pass Near Banning-Orange County Coastal Areas-
Orange County Inland Areas-
153 AM PST Sun Dec 17 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING TO
8 PM PST THIS EVENING FOR STRONG GUSTY WINDS AND LOW HUMIDITIES
FOR LOWER COASTAL MOUNTAIN SLOPES AND ADJACENT VALLEY AND COASTAL
AREAS...

* WIND...Areas of northeast winds 20 to 30 mph with gusts to 45
  mph. Isolated gusts to 55 mph below the Cajon Pass and near the
  coastal foothills of the Santa Ana Mountains.

* LOCATION...Strongest winds along and below coastal mountain
  slopes and passes and canyons. Lowest humidities in the Inland
  Empire and inland Orange County.

* HUMIDITY...Lowest daytime humidities around 15 percent.

* TIMING...Strongest and most widespread winds during the morning
  with lowest humidities winds Sunday morning with lowest
  humidities from late morning through the afternoon.

* OUTLOOK...Winds will weaken tonight and Monday.

* IMPACTS...Any fires that develop may spread rapidly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 heat can contribute to
extreme fire behavior.

&&

$$

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