Los Angeles County Mountains excluding the Santa Monica Range Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Fire Weather Warning
Issued: 10:22 AM PDT Oct. 22, 2017 – National Weather Service

... Red flag warning remains in effect until 6 PM PDT Tuesday for
gusty northeast winds and low relative humidity for the foothills
of the San Gabriel valley...

* winds... northeast winds 10 to 20 mph with gusts to 30 mph in
the foothills today, increasing to 15 to 25 mph with gusts
to 40 mph Monday through Tuesday.

* Relative humidity... minimum values 8 to 15 percent today,
lowering to 5 to 10 percent Monday and Tuesday.

* Temperatures... Max temperatures 90 to 97 degrees today,
rising to between 98 and 105 degrees Monday into Tuesday. Very
warm overnight low temperatures in the foothills and wind
prone areas... remaining 75 to 80 degrees in warmest locations.

* Impacts... if fire ignition occurs, there will be the potential
for very rapid spread of wildfire with long range spotting and
extreme fire behavior that could lead to a threat to life and
property.

Precautionary/preparedness actions...

A red flag warning means that critical fire weather conditions
are occurring or expected. A combination of gusty winds... very low relative
humidity... and hot temperatures can contribute to extreme fire
behavior. Use extreme caution when using potential fire ignition
sources.