National Weather Service

Watches, Warnings & Advisories
NWS Homepage

One product issued by NWS for: Sonoma CA
Share |

Heat Advisory

National Weather Service San Francisco Bay Area
948 PM PDT Mon Jun 1 2020

North Bay Interior Valleys-North Bay Mountains-
East Bay Interior Valleys-East Bay Hills and the Diablo Range-
Santa Cruz Mountains-Santa Clara Valley Including San Jose-
Southern Salinas Valley/Arroyo Seco and Lake San Antonio-
Santa Lucia Mountains and Los Padres National Forest-
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Including the cities of Santa Rosa, South Santa Rosa, Napa,
San Rafael, Petaluma, Novato, Rohnert Park, Angwin,
Lagunitas-Forest Knolls, Woodacre, Concord, Antioch, Livermore,
Walnut Creek, Pleasanton, Pittsburg, San Ramon, Blackhawk,
Scotts Valley, Boulder Creek, Day Valley, San Jose, Greenfield,
King City, and Salinas
948 PM PDT Mon Jun 1 2020


* WHAT...Near record to record temperatures are possible on

* WHERE...Interior portions of the San Francisco Bay Area and
  interior portions of the Central Coast.

* WHEN...10 AM through 9 PM PDT Wednesday.

* IMPACTS...Heat related illnesses such as heat exhaustion and
  heat stroke can occur due to prolonged exposure to hot
  temperatures. People most vulnerable include those who are
  spending a significant amount of time outdoors, those without
  air conditioning, young children, the elderly, and those with
  chronic ailments. Additional societal impacts due to people
  seeking relief by traveling from hotter inland areas to cooler
  coastal areas.

* ADDITIONAL DETAILS...Daytime temperatures for inland areas are
  forecast to range from the 90s to 102 on Wednesday. The San
  Francisco Bay shoreline and Santa Cruz County coast could warm
  to the mid 80s and lower 90s on Wednesday. For San Francisco
  itself, the Downtown/Bayside could warm to the lower 80s while
  the Pacific coastal side will peak in the lower 70s. Other
  coastal areas should remain relatively mild (70s to around 80)
  compared to inland areas given light onshore flow. Significant
  temperature differences from the coast to a few miles inland
  could drive an excessive number of persons towards the coast
  to seek relief from the heat. Individuals are advised to check
  with local authorities on potential closures of parks and
  beaches and be aware of any special requirements for visiting
  such areas. Overnight lows will range from the upper 50s to
  mid 60s, and even 70s in the hills, which may limit the amount
  of typical overnight relief from the heat.


Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children, disabled or elderly adults, 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

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
Page last modified: May 16, 2007
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE