Special Weather Statement
Issued by NWS Los Angeles, CA

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WWUS86 KLOX 240203

National Weather Service LOS ANGELES/OXNARD CA
703 PM PDT Wed Aug 23 2017

San Luis Obispo County Central Coast-
Santa Barbara County Central Coast-Santa Ynez Valley-
San Luis Obispo County Interior Valleys-Cuyama Valley-
Santa Barbara County South Coast-Ventura County Coast-
Los Angeles County Coast including Downtown Los Angeles-
Ventura County Interior Valleys-Ventura County Coastal Valleys-
Santa Monica Mountains Recreational Area-
San Luis Obispo County Mountains-Santa Barbara County Mountains-
Ventura County Mountains-
Los Angeles County Mountains excluding the Santa Monica Range-
Antelope Valley-Catalina and Santa Barbara Islands-
Santa Clarita Valley-Los Angeles County San Fernando Valley-
Los Angeles County San Gabriel Valley-
703 PM PDT Wed Aug 23 2017

...Potential for extended heat wave with elevated fire danger
this weekend into the middle of next week...

A strong upper level high pressure system over the region
combined with weakening onshore flow will bring the potential for
an extended heat wave to Southwest California. On Saturday, triple
digit temperatures will be likely for the warmest interior
sections. From Sunday through Wednesday and possibly longer,
triple digit heat will likely be widespread across the valleys,
lower mountains, and deserts, with warmest locations potentially
climbing to between 105 and 108 degrees. There is increasing
confidence that coastal areas will also warm significantly during
this heat wave with highs mostly in the 80`s and 90`s, with the
potential for downtown Los Angeles to approach 100 degrees at
times. This heat wave will also likely bring very warm overnight
low temperatures, adding to the heat stress. Many areas across the
Los Angeles metropolitan areas will likely see lows in the 70`s
with some foothill and mountain areas remaining in the 80`s

While it is still early, there is the potential for significant
heat impacts across much of Southwest California including coastal
residents without air conditioning. This will be worsened by the
the expected long duration of the heat wave and warm overnight
low temperatures. The hot and dry conditions combined with very
dry fuels will bring an extended period of elevated fire danger to
Southwest California.

Now is the time to make sure your air conditioning system is
running properly. For those without air conditioning, it is
recommended to take shelter in an air conditioned building when
possible. During heat waves, it is important to remember to drink
plenty of water and reduce time outside during peak heating
hours. Also, never leave children or pets in the car, even for a
short period of time.



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