Skip to content

Favorites

Heat Advisory

Status

Event Continued Active alert

Start Time

Fri 03/20/2026 07:27 AM EDT

End Time

Fri 03/20/2026 11:00 PM EDT

Significance

Advisory

Impacts

Low impact

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 427 AM PDT Fri Mar 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...Temperatures 90 to 97. * WHERE...Orange County Inland Areas and San Diego County Valleys. * WHEN...Until 8 PM PDT this evening. * 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. 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.

Technical Header

CAZ050-554-202115- /O.CON.KSGX.HT.Y.0002.000000T0000Z-260321T0300Z/ San Diego County Valleys-Orange County Inland Areas- Including the cities of Poway, Santee, Irvine, Orange, San Marcos, Escondido, El Cajon, Garden Grove, Santa Ana, La Mesa, Fullerton, Anaheim, and Mission Viejo 427 AM PDT Fri Mar 20 2026