Mount Shasta 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 Mount Shasta.

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

Red Flag Warning issued May 18 at 2:43PM PDT until May 18 at 8:00PM PDT by NWS Hanford CA

* AFFECTED AREA...Fire weather zone 579 West Side Hills on the Coastal Range. Fire weather zone 580 San Joaquin Valley. * WIND...GUSTING TO 20 MPH. * HUMIDITY...15% OR LESS THROUGH MONDAY EVENING. * HIGHEST THREAT...LOW RELATIVE HUMIDITIES LEADING TO EASIER FIRE STARTS. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

Coastal Flood Advisory issued May 18 at 8:57AM PDT until May 19 at 3:00AM PDT by NWS San Francisco CA

* WHAT...Up to 0.8 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...North Bay Interior Valleys County. * WHEN...Until 3 AM PDT Tuesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 0.8 ft above normal (6.66 ft MLLW) at 1:07 AM Tuesday 5/19. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

Red Flag Warning issued May 17 at 12:07PM PDT until May 18 at 8:00PM PDT by NWS Sacramento CA

* Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%. Overnight maximum relative humidities of 20 to 45%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected today. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended.