Orange County Inland Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Excessive Heat Warning, Wind Advisory
Issued: 2:42 AM PDT Oct. 23, 2017 – National Weather Service

... Wind Advisory remains in effect until 2 PM PDT Wednesday...
... Excessive heat warning remains in effect from 10 am this
morning to 8 PM PDT Tuesday...

* temperature... highs from 98 to 106 for inland Orange County
and the western inland Empire and the western valleys in San
Diego County. The heat will likely reach all the way to the
coast where highs will range from the mid 80s to the mid 90s.
Beach communities in Orange County may exceed 95 degrees
Tuesday.

* 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!

* Winds... northeast winds increasing to 20 to 30 mph with gusts
of 50 mph today in the mountain passes, foothills and sections
of the inland Empire. Stronger winds tonight and Tuesday with 25
to 35 mph winds gusting to 60 mph. In coastal Orange County, 15
to 25 mph winds with gusts to 40 mph are possible Tuesday.
Winds will not be quite as strong nor widespread for Tuesday
night into Wednesday morning with areas of northeast winds 15 to
25 mph with gusts to 45 mph.

* Impacts... hazardous travel for high profile vehicles. Watch for
broken tree limbs and downed Palm fronds.

* Outlook... weaker winds for Thursday and Friday with a slow
cooling trend.

Precautionary/preparedness actions...

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.

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult... especially for high
profile vehicles. Use extra caution.






Fire Weather Warning
Issued: 3:04 AM PDT Oct. 23, 2017 – National Weather Service

... Red flag warning remains in effect until 6 PM PDT Wednesday
for strong gusty winds and low humidity...

* wind... northeast winds 20 to 30 mph with gusts of 50 mph.
Stronger winds tonight and Tuesday of 25 to 35 mph with gusts to
55 mph and isolated gusts to 65 mph. Winds will not be quite as
strong nor widespread for Tuesday night into Wednesday morning
with areas of northeast winds 15 to 25 mph with gusts to 45 mph.

* Humidity... lowest daytime humidity around 5 percent today and
Tuesday with poorest overnight recovery near the coastal
foothills. Lowest daytime humidity Wednesday of 5 to 10 percent.

* Timing... the most extreme combination of heat... low humidity...
and wind through Tuesday. Then not quite as hot for Wednesday
with a slight recovery in humidity and with winds more localized
and not quite as strong.

* Outlook... weaker winds are expected for Thursday and Friday with
slow cooling spreading inland and with a gradual recovery of
humidity.

* Impacts... any fires that develop will likely spread rapidly...
especially today and Tuesday. Outdoor burning is not
recommended.

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 warm temperatures can
contribute to extreme fire behavior.



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