Corona, CA Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Corona.

Use the Radar Maps link provided to understand the trajectory of a storm.

Fire Weather Watch issued May 20 at 11:49PM PDT until May 22 at 11:00PM PDT by NWS Hanford CA

* AFFECTED AREA...Fire weather zone 579 West Side Hills. Fire weather zone 580 San Joaquin Valley. Fire weather zone 590 Central Sierra Foothills. Fire weather zone 591 Southern Sierra Foothills. * WIND...West to Northwest winds 15 to 20 mph with gusts reaching25 to 35 mph. Ridge-top wind gusts reaching 35 mph. * HUMIDITY...5 to 15 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

Heat Advisory issued May 20 at 7:37PM PDT until May 22 at 9:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Temperatures up to 100 expected. * WHERE...Calabasas and Agoura Hills, Eastern San Fernando Valley, Eastern Santa Monica Mountains Recreational Area, Western San Fernando Valley, and Western Santa Monica Mountains Recreational Area. * WHEN...Until 9 PM PDT Thursday. * 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.

Heat Advisory issued May 20 at 7:37PM PDT until May 22 at 9:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Temperatures up to 100 expected. * WHERE...A portion of southwest California. * WHEN...From 11 AM Wednesday to 9 PM PDT Thursday. * 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. Do not leave people or pets in closed vehicles.