Weather Alerts for INLAND EMPIRE

Issued by the National Weather Service

Excessive Heat Warning  EXCESSIVE HEAT WARNING   Excessive Heat Warning
INLAND EMPIRE

Areas Affected:
Orange County Coastal - Orange County Inland - San Bernardino and Riverside County Valleys-The Inland Empire - San Diego County Coastal Areas - San Diego County Inland Valleys
Effective: Mon 10:00 am Updated: Sat 3:56 pm Urgency: Expected
Expires: Tue 8:00 pm Severity:  Moderate  Certainty: Likely

 
Details:
...VERY HOT IN THE COASTAL AND VALLEY AREAS MONDAY AND TUESDAY...
.Offshore Santa Ana winds and strong high pressure aloft will
bring hot weather Sunday through Wednesday. Monday and Tuesday
will be the hottest days with highs above 100 in the valleys and
some coastal areas. Temperatures may not fall below 70 Monday
night in some of the windier coastal foothill locations. Still
very warm Wednesday with highs in the 90s. Cooler Thursday and
Friday.
...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM MONDAY TO 8 PM PDT
TUESDAY...
The National Weather Service in San Diego has issued an Excessive
Heat Warning...which is in effect from 10 AM Monday to 8 PM PDT
Tuesday. The Excessive Heat Watch is no longer in effect.
* TEMPERATURE...Highs in the 90s near the coast and from 97 to 107
in Inland Orange County, the western Inland Empire and western
valleys in San Diego County. The beaches will not be quite as
hot with highs mostly in the 80s.
* IMPACTS...Heat related illness is likely for those involved in
strenuous outdoor activity, or those with health conditions
that do not have adequate access to air conditioning. If
untreated, heat illness events could be fatal. Never leave
children or pets inside a parked car!
* OUTLOOK...Still very warm Wednesday. Gradual cooling Thursday
and Friday.

Information:
An Excessive Heat Warning means that a prolonged period of
dangerously hot temperatures will occur. The combination of hot
temperatures and high humidity will combine to create a dangerous
situation in which heat illnesses are likely. Drink plenty of
fluids...stay in an air-conditioned room...stay out of the sun...
and check up on relatives and neighbors.

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
INLAND EMPIRE

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.