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3 products issued by NWS for: Los Angeles CA
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Excessive Heat Warning

URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
214 AM PDT Tue Oct 24 2017

...DANGEROUS HEAT OVER SOUTHWEST CALIFORNIA THROUGH TUESDAY...

...GUSTY SANTA ANA WINDS THROUGH WEDNESDAY OVER LOS ANGELES AND
VENTURA COUNTIES...

.A moderate Santa Ana wind event is expected to bring northeast
winds gusting to 40 to 60 mph over much of Ventura and Los
Angeles Counties through Wednesday. The winds should be strongest
today with isolated wind damage and power outages possible.

Strong high pressure in combination with the offshore winds will
produce record setting high temperatures across southwest
California. High temperatures today will again be between 95 and
105 over a large area, even within a few miles of the ocean.
People living in coastal plains without air conditioning should
take precautions to avoid heat illness and heat stress. Low
temperatures will remain in the 70s to lower 80s in breezy
locations. This is a very unusual late season heat wave and should
not be taken lightly!

CAZ040-041-242200-
/O.CON.KLOX.EH.W.0006.000000T0000Z-171025T0300Z/
/O.CON.KLOX.WI.Y.0068.000000T0000Z-171025T2100Z/
Ventura County Coast-
Los Angeles County Coast including Downtown Los Angeles-
Including the cities of Ventura, Oxnard, Camarillo, Malibu,
Santa Monica, Beverly Hills, Hollywood, and Long Beach
214 AM PDT Tue Oct 24 2017

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...
...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 PM PDT WEDNESDAY...

* TEMPERATURES...Highs from 95 to 105. Overnight lows from 65 to
  75 except around 80 in the hills.

* WINDS...Northeast winds 20 to 30 mph with gusts 45 to 55 mph
  today before gradually weakening into Wednesday. Strongest in
  Ventura County and from Malibu to Hollywood Hills in Los Angeles
  County.

* IMPACTS...The very high temperatures create a dangerous
  situation in which heat illnesses are possible. Temperatures
  inside vehicles, even if the windows are partially open, can
  quickly rise to life-threatening levels. Gusty winds could
  create travel difficulty for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take extra precautions through Tuesday if you work or spend time
outside. When possible, reschedule strenuous activities to early
morning or evening. Know the signs and symptoms of heat
exhaustion and heat stroke. Wear light weight and loose fitting
clothing when possible and drink plenty of water. Never, ever,
leave people or pets in enclosed vehicles, even for a short
period of time.

When driving, use extra caution. Be prepared for sudden gusty
cross winds.

&&

$$



Wind Advisory

URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
214 AM PDT Tue Oct 24 2017

...DANGEROUS HEAT OVER SOUTHWEST CALIFORNIA THROUGH TUESDAY...

...GUSTY SANTA ANA WINDS THROUGH WEDNESDAY OVER LOS ANGELES AND
VENTURA COUNTIES...

.A moderate Santa Ana wind event is expected to bring northeast
winds gusting to 40 to 60 mph over much of Ventura and Los
Angeles Counties through Wednesday. The winds should be strongest
today with isolated wind damage and power outages possible.

Strong high pressure in combination with the offshore winds will
produce record setting high temperatures across southwest
California. High temperatures today will again be between 95 and
105 over a large area, even within a few miles of the ocean.
People living in coastal plains without air conditioning should
take precautions to avoid heat illness and heat stress. Low
temperatures will remain in the 70s to lower 80s in breezy
locations. This is a very unusual late season heat wave and should
not be taken lightly!

CAZ040-041-242200-
/O.CON.KLOX.EH.W.0006.000000T0000Z-171025T0300Z/
/O.CON.KLOX.WI.Y.0068.000000T0000Z-171025T2100Z/
Ventura County Coast-
Los Angeles County Coast including Downtown Los Angeles-
Including the cities of Ventura, Oxnard, Camarillo, Malibu,
Santa Monica, Beverly Hills, Hollywood, and Long Beach
214 AM PDT Tue Oct 24 2017

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...
...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 PM PDT WEDNESDAY...

* TEMPERATURES...Highs from 95 to 105. Overnight lows from 65 to
  75 except around 80 in the hills.

* WINDS...Northeast winds 20 to 30 mph with gusts 45 to 55 mph
  today before gradually weakening into Wednesday. Strongest in
  Ventura County and from Malibu to Hollywood Hills in Los Angeles
  County.

* IMPACTS...The very high temperatures create a dangerous
  situation in which heat illnesses are possible. Temperatures
  inside vehicles, even if the windows are partially open, can
  quickly rise to life-threatening levels. Gusty winds could
  create travel difficulty for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take extra precautions through Tuesday if you work or spend time
outside. When possible, reschedule strenuous activities to early
morning or evening. Know the signs and symptoms of heat
exhaustion and heat stroke. Wear light weight and loose fitting
clothing when possible and drink plenty of water. Never, ever,
leave people or pets in enclosed vehicles, even for a short
period of time.

When driving, use extra caution. Be prepared for sudden gusty
cross winds.

&&

$$



Red Flag Warning

URGENT - FIRE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
316 PM PDT Mon Oct 23 2017

...RED FLAG WARNING IN EFFECT UNTIL 6 PM PDT WEDNESDAY FOR MUCH
OF LOS ANGELES AND VENTURA COUNTIES DUE TO GUSTY SANTA ANA WINDS
AND HOT AND DRY CONDITIONS...

.A moderate to locally strong Santa Ana wind event will bring
windy, hot and very dry conditions through Wednesday to much of
Los Angeles and Ventura Counties. This event is especially
concerning because of the multiple day nature of it, which we
have not seen yet this season and such events have a history of
large fires. The winds will peak on Tuesday with 20 to 30 mph
gusting to 50 mph common in the wind prone coastal and valley
areas of Los Angeles and Ventura Counties, and 20 to 30 mph
gusting to 60 mph common in the mountains. Minimum humidities of
5 to 10 percent will be common through Wednesday, with poor
overnight recoveries. Widespread record breaking heat will
exasperate the situation, with highs between 95 and 105 common
and lows between 65 and 75 common. Some windy and hilly locations
may only drop into the 80s at night. A Red Flag Warning will
remain in effect through Wednesday as a result. Over San Luis
Obispo and Santa Barbara Counties, similar heat and dry air is
expected, but easterly winds peaked on Sunday and should locally
gust between 20 and 30 mph in the wind prone areas. As such,
elevated fire weather conditions exist there.

With these prolonged weather conditions, and the very dry
fuels/vegetation, extreme fire behavior is likely if any fire
ignition begins...threatening life and property. The public
should be very, very careful with any potential ignition sources
such as welding and brush clearing equipment, as well as
campfires and cigarettes.

CAZ241-548-241700-
/O.CON.KLOX.FW.W.0008.000000T0000Z-171026T0100Z/
Los Angeles County Coast including Downtown Los Angeles-
Los Angeles County San Gabriel Valley-
316 PM PDT Mon Oct 23 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT WEDNESDAY
FOR MUCH OF LOS ANGELES AND VENTURA COUNTIES DUE TO GUSTY SANTA
ANA WINDS AND HOT AND DRY CONDITIONS OVER THE HILLS AND CANYONS...

* Winds...Areas of north to northeast winds 15 to 30 mph with
  gusts 35 to 45 mph through Tuesday mainly in the hills and
  canyons...then weakening through Wednesday.

* Relative Humidity...Minimum humidities between 5 and 10
  percent through Wednesday. Very poor humidity recoveries
  expected each night.

* Temperatures...Maximums between 95 and 105. Minimums between
  65 and 75 except 75 to 85 in the hills.

* Impacts...If fire ignition occurs, conditions are favorable
  for extreme fire behavior and spread which would threaten life
  and property.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are 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.

&&

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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