San Marcos, CA Warnings, Watches and Advisories

Severe Thunderstorm Warning issued October 21 at 3:58PM PDT until October 21 at 4:15PM PDT by NWS Las Vegas NV

At 358 PM PDT, a severe thunderstorm was located 10 miles north of Panamint Springs, or 16 miles southwest of Stovepipe Wells, moving north at 40 mph. HAZARD...60 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Areas of blowing dust may result in reduced visibility. Expect damage to roofs, siding, and trees. Locations impacted include... Panamint Springs.

Flood Advisory issued October 21 at 3:39PM PDT until October 21 at 7:15PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Far southern Los Angeles County in southwestern California... * WHEN...Until 715 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 338 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Long Beach, Torrance, Rancho Palos Verdes, Carson, Port of Los Angeles, Rolling Hills, Wilmington, Harbor City, Los Angeles Harbor, Compton, Gardena, Hawthorne, Bellflower, Signal Hill, Lawndale and Paramount. - http://www.weather.gov/safety/flood

Flood Watch issued October 21 at 1:45PM PDT until October 22 at 8:00PM PDT by NWS Hanford CA

* WHAT...Flash flooding caused by excessive rainfall from storms training over the same area. * WHERE...A portion of central California, including the following areas, Bakersfield, Buena Vista, Buttonwillow - Lost Hills - I5, Frazier Mountain Communities, Grapevine, Indian Wells Valley, Kern River Valley, Mojave Desert, Mojave Desert Slopes, Piute Walker Basin, South End San Joaquin Valley, Tehachapi and West Side Mountains South of 198. * WHEN...Through Thursday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. Storm drains and ditches may become clogged with debris. * ADDITIONAL DETAILS... - Strong area of low pressure off the Southern California coast will move inland and interact with tropical moisture. - Be especially careful on Highway 58 between mile markers 101 to 103 and the Borel burn scar. - http://www.weather.gov/safety/flood

Winter Weather Advisory issued October 21 at 1:44PM PDT until October 22 at 11:00AM PDT by NWS Hanford CA

* WHAT...There is an 70% chance of 4 inches or more of snow along the Tioga Pass and highway 120. There is a 60-80% chance for four inches or more of snow above 8,000 feet in Tulare, Madera, and Fresno Counties. * WHERE...Above 8,000 feet in the Sierra Nevada. * WHEN...Until 11 AM PDT Thursday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...Snowfall will affect traffic across Tioga Highway/Pass.

Flood Watch issued October 21 at 7:10AM PDT until October 22 at 4:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of southwest California, including the following areas, Santa Barbara County Interior Mountains, Santa Barbara County Southeastern Coast, Santa Barbara County Southwestern Coast, Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western Range and Santa Ynez Valley. * WHEN...Through Thursday afternoon. * IMPACTS...Flooding may occur in poor drainage and urban areas. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Rain rates between 0.50 and 1.00 inch per hour are possible, heaviest today and tonight. - http://www.weather.gov/safety/flood

Flood Watch issued October 21 at 7:10AM PDT until October 22 at 4:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of southwest California, including the following areas, Eastern Santa Monica Mountains Recreational Area, Malibu Coast and Western Santa Monica Mountains Recreational Area. * WHEN...From 4 PM PDT this afternoon through Thursday afternoon. * IMPACTS...Flooding may occur in poor drainage and urban areas. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Rain rates between 0.50 and 1.00 inch per hour are possible, heaviest tonight. - http://www.weather.gov/safety/flood

Winter Weather Advisory issued October 21 at 1:39AM PDT until October 22 at 5:00PM PDT by NWS Reno NV

* CHANGES...None. * WHAT...Snow above 8000 feet. Snow accumulations of 4 to 8 inches with up to 10 inches along the highest mountain peaks. Ridge winds gusting as high as 40 mph at times. * WHERE...Mono County. * WHEN...From 11 AM this morning to 5 PM PDT Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Wednesday evening and Thursday morning commutes. * ADDITIONAL DETAILS...Brief bursts of heavy snow and locally higher snowfall totals will be possible with any thunderstorms that develop today and Thursday.

Beach Hazards Statement issued October 19 at 12:31PM PDT until October 23 at 3:00AM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Dangerous rip currents and breaking waves due to elevated surf of 3 to 6 feet expected. * WHERE...Ventura County Beaches, Malibu Coast and Los Angeles County Beaches. * WHEN...Through late Thursday night. * IMPACTS...There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can wash people off beaches and rocks, and capsize small boats nearshore. * ADDITIONAL DETAILS...Minor beach erosion and tidal overflows may occur across south-facing beaches especially along the Malibu Coast and in the Long Beach area.

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. 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 San Marcos.

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