A PARTICULARLY DANGEROUS SITUATION IS EXPECTED FOR INLAND ORANGE
COUNTY, THE SANTA ANA MOUNTAINS, INLAND EMPIRE, AND SAN BERNARDINO
MOUNTAIN FOOTHILLS FROM 7 AM TO 1 PM WEDNESDAY. A PERIOD OF
WIDESPREAD, STRONG WINDS ACCOMPANIED BY VERY DRY AIR AND
CRITICALLY DRY FUELS WILL RESULT IN DANGEROUS FIRE WEATHER
CONDITIONS. ANY NEW FIRE IGNITION IN THESE AREAS WILL LIKELY HAVE
VERY DANGEROUS WILDFIRE SPREAD AND BEHAVIOR WITH GREAT DIFFICULTY
IN CONTAINMENT THAT COULD IMPACT LIFE AND PROPERTY.
.A RED FLAG WARNING IS IN EFFECT FOR TUESDAY AFTERNOON THROUGH
THURSDAY DUE TO STRONG SANTA ANA WINDS AND LOW RELATIVE HUMIDITY
FOR THE SAN BERNARDINO COUNTY MOUNTAINS, THE INLAND EMPIRE, SANTA
ANA MOUNTAINS, AND INLAND ORANGE COUNTY.
.A RED FLAG WARNING IS IN EFFECT FOR LATE TUESDAY AFTERNOON
THROUGH WEDNESDAY DUE TO STRONG SANTA ANA WINDS AND LOW RELATIVE
HUMIDITY FOR COASTAL ORANGE COUNTY.
.A RED FLAG WARNING IS IN EFFECT FOR WEDNESDAY MORNING THROUGH
THURSDAY DUE TO STRONG SANTA ANA WINDS AND LOW RELATIVE HUMIDITY
FOR SAN DIEGO AND RIVERSIDE COUNTY MOUNTAINS, SAN DIEGO VALLEYS,
AND THE SAN GORGONIO PASS.
The National Weather Service in San Diego has issued a Red Flag
Warning for strong gusty winds and low relative humidity, which
is in effect from 4 AM Wednesday to 6 PM PST Thursday. The Fire
Weather Watch is no longer in effect.
* WINDS…Northeast 30 to 40 mph with gusts up to 60 mph.
Strongest winds will occur into the Inland Empire. Weaker winds
expected Thursday with gusts 40 to 50 mph.
* RELATIVE HUMIDITY…Lowest daytime humidity of 8 to 15 percent
on Wednesday. Minimum relative humidity on Thursday will be 10
to 15 percent.
* IMPACTS…Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended. Winds could damage outdoor
property and will make for difficult driving conditions.
* LOCATION…San Gorgonio Pass Near Banning.
SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK…
No watches are valid as of Mon Apr 21 12:35:01 UTC 2025.
No Mesoscale Discussions are in effect as of Mon Apr 21 12:35:01 UTC 2025.
Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0307 AM…
* AFFECTED AREA...Fire Weather Zones 242, 244, 246, 247, 248, 249, 250 and 251. *…
* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Trinity County. *…
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