weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Heat Advisory


URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
426 PM PDT Sat Jul 20 2024

CAZ342-343-369-370-375-211130-
/O.CON.KLOX.HT.Y.0008.000000T0000Z-240722T0500Z/
Santa Lucia Mountains-Southern Salinas Valley-Western Santa
Monica Mountains Recreational Area-Eastern Santa Monica Mountains
Recreational Area-Santa Susana Mountains-
Including the cities of Irish Hills, Topanga, Paso Robles, San
Miguel, Oat Mountain, Hearst Castle, Malibu Bowl, Atascadero,
Templeton, and Lake Nacimiento
426 PM PDT Sat Jul 20 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SUNDAY...

* WHAT...High temperatures of up to 103.

* WHERE...Eastern Santa Monica Mountains Recreational Area, Santa
  Lucia Mountains, Santa Susana Mountains, Southern Salinas Valley,
  and Western Santa Monica Mountains Recreational Area.

* WHEN...Until 10 PM PDT Sunday.

* IMPACTS...There is a high risk for heat illness for sensitive
  populations including the very young, the very old, those without
  air conditioning, and those active outdoors.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

&&

$$

Visit us at http://www.weather.gov/LosAngeles

NWS Los Angeles/Oxnard

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
259 PM PDT Sat Jul 20 2024

CAZ503-504-506-512-513-516-211300-
/O.CON.KMTR.HT.Y.0007.240722T1800Z-240725T0600Z/
Sonoma Coastal Range-North Bay Interior Mountains-
North Bay Interior Valleys-Santa Cruz Mountains-
Santa Clara Valley...including San Jose-
Southern Salinas Valley...Arroyo Seco...and Lake San Antonio-
259 PM PDT Sat Jul 20 2024

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT
WEDNESDAY...

* WHAT...Daytime temperatures reaching the 90s to near 100.
  Overnight temperatures will be mild and in the upper 50s to
  near 70.

* WHERE...Interior portions of the North Bay, South Bay, Santa
  Cruz Mountains and Southern Salinas Valley.

* WHEN...From 11 AM Monday to 11 PM PDT Wednesday.

* IMPACTS...Moderate HeatRisk across inland areas. This level of
  heat affects individuals sensitive to heat, especially those
  without effective cooling and/or adequate hydration.

* ADDITIONAL DETAILS...The hottest day will be Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions 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 lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/mtr

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
132 PM PDT Sat Jul 20 2024

CAZ050-210500-
/O.CON.KSGX.HT.Y.0006.000000T0000Z-240722T0400Z/
San Diego County Valleys-
Including the cities of La Mesa, Santee, Poway, El Cajon, San
Marcos, and Escondido
132 PM PDT Sat Jul 20 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT SUNDAY...

* WHAT...Temperatures up to 100 to 102 in the eastern valleys. Lows
  tonight 65 to 75.

* WHERE...San Diego County Valleys.

* WHEN...Until 9 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
132 PM PDT Sat Jul 20 2024

CAZ048-210500-
/O.CON.KSGX.HT.Y.0006.000000T0000Z-240722T0400Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Moreno Valley, San Bernardino, Corona,
Fontana, Rancho Cucamonga, Riverside, and Ontario
132 PM PDT Sat Jul 20 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT SUNDAY...

* WHAT...Temperatures up to 106. Lows tonight 65 to 75.

* WHERE...San Bernardino and Riverside County Valleys-The Inland
  Empire.

* WHEN...Until 9 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
132 PM PDT Sat Jul 20 2024

CAZ055-056-210500-
/O.CON.KSGX.HT.Y.0006.000000T0000Z-240722T0400Z/
San Bernardino County Mountains-Riverside County Mountains-
Including the cities of Big Bear Lake, Running Springs,
Idyllwild-Pine Cove, Crestline, Big Bear City, Lake Arrowhead,
and Wrightwood
132 PM PDT Sat Jul 20 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT SUNDAY...

* WHAT...Temperatures up to 101 at elevations below 4,000 feet. Lows
  tonight up to 81 on desert slopes.

* WHERE...Riverside County Mountains and San Bernardino County
  Mountains.

* WHEN...Until 9 PM PDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

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: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE