Alerts from NWS San Diego CA (UNOFFICIAL)
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san.nws-bot.us
Alerts from NWS San Diego CA (UNOFFICIAL)
@san.nws-bot.us
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Unofficial bot sharing alerts from NWS San Diego CA.

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Dense Fog Advisory issued November 28 at 2:08AM PST until November 28 at 9:00AM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Orange County Coastal Areas. * WHEN...Until 9 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
November 28, 2025 at 10:15 AM
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Air Quality Alert issued November 27 at 12:54PM PST by NWS San Diego CA
Additional Details Here.
* WHAT...The South Coast AQMD has issued a mandatory wood-burning ban for residents in the South Coast Air Basin. The No-Burn rule bans burning wood, pellets, and manufactured fire logs in any indoor or outdoor wood-burning device. * WHERE...The South Coast Air Basin, which includes Orange County and non-desert portions of Los Angeles, Riverside, and San Bernardino counties. No-Burn Day alerts do not apply to areas above 3,000 feet in elevation, the Coachella Valley, or the High Desert. Homes that rely on wood as a sole source of heat, low-income households and those without natural gas service also are exempt from the requirement. * WHEN...midnight to midnight on Friday. * IMPACTS...Particles in smoke can get deep into the lungs and cause health problems (including asthma attacks), increases in emergency room visits, and hospitalizations. No-Burn Days are needed to protect public health when fine particle pollution levels are expected to be high anywhere in the South Coast Air Basin. No-Burn Days are based on fine particle pollution levels that are forecasted for an entire 24-hour period, which may not be reflected in real-time air quality maps.
November 27, 2025 at 9:00 PM
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🚨 Winter Storm Warning issued November 22 at 6:01AM PST until November 22 at 10:00AM PST by NWS San Diego CA 🚨
Additional Details Here.
* WHAT...Heavy wet snow above 6500 ft. Additional snow accumulations up to one inch. Winds gusting as high as 45 mph. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...Until 10 AM PST this morning. * IMPACTS...Plan on slippery road conditions.
November 22, 2025 at 2:15 PM
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🚨 Winter Storm Warning issued November 21 at 8:34PM PST until November 22 at 10:00AM PST by NWS San Diego CA 🚨
Additional Details Here.
* WHAT...Heavy wet snow above 6500 ft. Additional snow accumulations of 3 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Plan on slippery road conditions.
November 22, 2025 at 4:45 AM
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🚨 Winter Storm Warning issued November 21 at 1:13PM PST until November 22 at 10:00AM PST by NWS San Diego CA 🚨
Additional Details Here.
* WHAT...Heavy wet snow above 6500 ft. Additional snow accumulations of 3 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute.
November 21, 2025 at 9:30 PM
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🚨 Winter Storm Warning issued November 21 at 5:03AM PST until November 21 at 4:00PM PST by NWS San Diego CA 🚨
Additional Details Here.
* WHAT...Heavy wet snow above 6500 ft. Additional snow accumulations up to 3 inches. Winds gusting as high as 35 mph. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute.
November 21, 2025 at 1:15 PM
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🚨 Flash Flood Warning issued November 21 at 4:27AM PST until November 21 at 5:30AM PST by NWS San Diego CA 🚨
Additional Details Here.
At 427 AM PST, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1 inch of rain has fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar and automated gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Irvine, Mission Viejo, Laguna Beach, Laguna Niguel, Rancho Santa Margarita, Aliso Viejo, Laguna Woods, El Toro, Newport Coast and Laguna Hills.
November 21, 2025 at 12:30 PM
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🚨 Flash Flood Warning issued November 21 at 3:37AM PST until November 21 at 5:30AM PST by NWS San Diego CA 🚨
Additional Details Here.
FFWSGX The National Weather Service in San Diego has issued a * Flash Flood Warning for... Central Orange County in southwestern California... * Until 530 AM PST. * At 337 AM PST, Doppler radar and automated rain gauges indicated heavy rain falling across the warned area. The expected rainfall rate is 0.5 to 0.75 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Radar and automated gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Irvine, Mission Viejo, Laguna Beach, Laguna Niguel, Rancho Santa Margarita, Aliso Viejo, Laguna Woods, El Toro, Newport Coast and Laguna Hills.
November 21, 2025 at 11:45 AM
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Flood Advisory issued November 21 at 1:39AM PST until November 21 at 3:38AM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of Southwest California, including the following counties, Orange, Riverside and San Diego. * WHEN...Until 338 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 139 AM PST, Doppler radar indicated heavy rain. This will cause urban and small stream flooding. Between 0.75 and 1.25 inches of rain have fallen. - Additional rainfall amounts up to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Anaheim, Santa Ana, Irvine, Huntington Beach, Garden Grove, Orange, Fullerton, Costa Mesa, Temecula and Mission Viejo. - https://www.weather.gov/safety/flood
November 21, 2025 at 10:00 AM
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Marine Weather Statement issued November 21 at 1:13AM PST by NWS San Diego CA
Additional Details Here.
There is a chance of thunderstorms over coastal waters this morning. Any thunderstorm is capable of producing lightning, gusty, erratic winds leading to rough seas, near zero visibility in heavy rainfall, and waterspouts. Mariners should be prepared for conditions to change rapidly. Monitor NOAA Weather Radio for the latest information, forecasts, and warnings.
November 21, 2025 at 9:15 AM
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Flood Advisory issued November 21 at 12:09AM PST until November 21 at 1:33AM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Urban and small stream flooding caused by excessive rainfall continues. * WHERE...A portion of Southwest California, including the following counties, Orange, Riverside, San Bernardino and San Diego. * WHEN...Until 133 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 1209 AM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Between 0.25 and 0.75 inches of rain have fallen. - Additional rainfall amounts of 0.25 to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Anaheim, Riverside, Irvine, San Bernardino, Fontana, Moreno Valley, Oceanside, Ontario, Corona and Orange. - https://www.weather.gov/safety/flood
November 21, 2025 at 8:15 AM
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🚨 Special Marine Warning issued November 20 at 11:47PM PST until November 21 at 12:15AM PST by NWS San Diego CA 🚨
Additional Details Here.
For the following areas... Coastal Waters from San Mateo Point to the Mexican Border and out to 10 nm... At 1147 PM PST, a front capable of producing waterspouts was located 8 nm southwest of Oceanside, moving northeast at 10 knots. HAZARD...Waterspouts. SOURCE...Radar indicated. IMPACT...Waterspouts can create locally hazardous seas. The front will remain over mainly open waters.
November 21, 2025 at 8:00 AM
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🚨 Special Marine Warning issued November 20 at 11:26PM PST until November 21 at 12:15AM PST by NWS San Diego CA 🚨
Additional Details Here.
SMWSGX The National Weather Service in San Diego has issued a * Special Marine Warning for... Coastal Waters from San Mateo Point to the Mexican Border and out to 10 nm... * Until 1215 AM PST. * At 1125 PM PST, a front capable of producing waterspouts was located 10 nm west of Carlsbad, moving northeast at 10 knots. HAZARD...Waterspouts. SOURCE...Radar. IMPACT...Waterspouts can create locally hazardous seas. * The front will remain over mainly open waters.
November 21, 2025 at 7:30 AM
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Flood Advisory issued November 20 at 10:46PM PST until November 20 at 11:29PM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of Southwest California, including the following counties, Orange and San Diego. * WHEN...Until 1129 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 1045 PM PST, Doppler radar indicated moderate to heavy rain. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.5 and 1.5 inch of rain has fallen. Highest rainfall totals have occurred in Orange County. - Additional rainfall amounts of 0.25 to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Anaheim, Santa Ana, Irvine, Huntington Beach, Garden Grove, Oceanside, Orange, Fullerton, Costa Mesa and Carlsbad. - https://www.weather.gov/safety/flood
November 21, 2025 at 7:00 AM
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🚨 Flash Flood Warning issued November 20 at 10:50PM PST until November 21 at 12:00AM PST by NWS San Diego CA 🚨
Additional Details Here.
At 1050 PM PST, Doppler radar and automated rain gauges indicated that heavy rain has fallen across the warned area. Between 0.75 and 1.75 inches of rain have fallen. Rain in the warned area has become lighter and more scattered. The current rainfall rate in the warned area is 0.1 to 0.2 inches in 1 hour. Additional rainfall amounts up to 0.25 inches are possible in the warned area. Flash flooding is ongoing. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Radar and automated gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Huntington Beach, Garden Grove, Stanton, Seal Beach, Westminster, Fountain Valley and Cypress.
November 21, 2025 at 7:00 AM
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Flood Advisory issued November 20 at 10:36PM PST until November 21 at 1:33AM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of Southwest California, including the following counties, Orange, Riverside, San Bernardino and northern San Diego. Including the Airport Burn Scar. * WHEN...Until 133 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 1034 PM PST, Doppler radar and automated rain gauges indicated heavy rain. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.25 and 0.75 inches of rain have fallen. Rainfall rates of 0.30 to 0.70 inches per hour are possible. - Additional rainfall amounts of 0.5 to 1 inch are expected over the area. This additional rain will result in minor flooding and potentially debris flow over the Airport burn scar. - Some locations that will experience flooding include... Anaheim, Riverside, Irvine, San Bernardino, Fontana, Moreno Valley, Oceanside, Ontario, Corona and Orange. This advisory includes the Airport Burn Scar. - https://www.weather.gov/safety/flood
November 21, 2025 at 6:45 AM
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🚨 Flash Flood Warning issued November 20 at 10:00PM PST until November 21 at 12:00AM PST by NWS San Diego CA 🚨
Additional Details Here.
FFWSGX The National Weather Service in San Diego has issued a * Flash Flood Warning for... West Central Orange County in southwestern California... * Until midnight PST tonight. * At 1000 PM PST, Doppler radar and automated rain gauges indicated heavy rain falling across the warned area. Between 0.5 and 1 inch of rain has fallen. The expected rainfall rate is 0.7 to 0.8 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Radar and automated gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Huntington Beach, Garden Grove, Stanton, Seal Beach, Westminster, Fountain Valley and Cypress.
November 21, 2025 at 6:15 AM
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Flood Advisory issued November 20 at 9:31PM PST until November 20 at 11:29PM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Flooding caused by moderate to locally heavy rainfall is expected. * WHERE...A portion of coastal Southwest California, including the following counties, Orange and San Diego. * WHEN...Until 1129 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 930 PM PST, Doppler radar indicated moderate to heavy rain. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.25 and 0.75 inches of rain have fallen. Rainfall rates of 0.30 to 0.50 inches per hour are expected. - Some locations that will experience flooding include... Anaheim, Santa Ana, Irvine, Huntington Beach, Garden Grove, Oceanside, Orange, Fullerton, Costa Mesa and Carlsbad. - https://www.weather.gov/safety/flood
November 21, 2025 at 5:45 AM
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Small Craft Advisory issued November 20 at 8:17PM PST until November 21 at 2:00AM PST by NWS San Diego CA
Additional Details Here.
* WHAT...South winds increasing to 10 to 20 kts this afternoon, becoming west this evening with gusts up to 25 kts. Seas 5 to 8 feet in the outer waters, 4 to 6 feet in the inner waters. * WHERE...Coastal Waters from San Mateo Point to the Mexican Border and out to 10 nm and Waters from San Mateo Point to the Mexican Border Extending 10 to 60 nm out including San Clemente Island. * WHEN...From 4 PM this afternoon to 2 AM PST Friday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...Strong elevated winds precede a front moving through the waters this afternoon and early evening, followed by westerly winds behind the front tonight.
November 21, 2025 at 4:30 AM
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🚨 Winter Storm Warning issued November 20 at 8:18PM PST until November 21 at 4:00PM PST by NWS San Diego CA 🚨
Additional Details Here.
* WHAT...Heavy wet snow expected above 6500 feet with accumulating snow as low as 5500 to 6000 feet early Friday morning. Through Friday afternoon, snowfall of 4 to 8 inches is expected from 6000 to 7000 feet, 7 to 11 inches from 7000 to 7500 feet, and 12 to 16 inches above 7500 feet. Scattered snow showers will continue for Friday night into Saturday with additional snowfall of 2 to 5 inches. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...Until 4 PM PST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning commute.
November 21, 2025 at 4:30 AM
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🚨 Flash Flood Warning issued November 20 at 6:35PM PST until November 20 at 8:30PM PST by NWS San Diego CA 🚨
Additional Details Here.
FFWSGX The National Weather Service in San Diego has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 830 PM PST. * At 635 PM PST, Doppler radar indicated heavy rain across the warned area. The expected rainfall rate is 0.75 to 1 inch in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Apple Valley, northern Lucerne Valley and Hwy 247 Between Lucerne Valley And Barstow. Portions of Interstate 15 may be impacted north of Hesperia.
November 21, 2025 at 2:45 AM
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Flood Advisory issued November 20 at 6:10PM PST until November 20 at 7:25PM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...In the High Desert, along and east of Interstate 15, north of Apple Valley and south of Barstow. * WHEN...Until 725 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 609 PM PST, Doppler radar indicated heavy rain. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Additional rainfall amounts of 0.25 to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Victorville, I-15 Between Victorville And Barstow, northern Lucerne Valley, Hwy 247 Between Lucerne Valley And Barstow and Helendale. - https://www.weather.gov/safety/flood
November 21, 2025 at 2:15 AM
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Flood Advisory issued November 20 at 6:08PM PST until November 20 at 8:05PM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...In the High Desert along and east of I-15 from Hesperia northward. * WHEN...Until 805 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 606 PM PST, Doppler radar indicated heavy rain. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Additional rainfall amounts of 0.25 to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Victorville, Hesperia, Apple Valley, I-15 Between Victorville And Barstow, northern Lucerne Valley, Adelanto, Mountain View Acres and Oro Grande. - https://www.weather.gov/safety/flood
November 21, 2025 at 2:15 AM
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Flood Advisory issued November 20 at 5:25PM PST until November 20 at 6:25PM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of the High Desert. * WHEN...Until 625 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 523 PM PST, Minor flooding is ongoing in the advisory area. - Additional rainfall amounts of 0.1 to 0.25 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Victorville, I-15 Between Victorville And Barstow, northern Lucerne Valley, Hwy 247 Between Lucerne Valley And Barstow and Helendale. - https://www.weather.gov/safety/flood
November 21, 2025 at 1:30 AM
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Flood Advisory issued November 20 at 4:30PM PST until November 20 at 6:25PM PST by NWS San Diego CA
Additional Details Here.
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...In the High Desert, along and east of Interstate 15, north of Apple Valley and south of Barstow. * WHEN...Until 625 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 427 PM PST, Doppler radar indicated heavy rain. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Radar estimates 0.2 to 0.3 inches per hour. Additional rain will result in minor flooding. - Some locations that will experience flooding include... Victorville, I-15 Between Victorville And Barstow, northern Lucerne Valley, Hwy 247 Between Lucerne Valley And Barstow and Helendale. - https://www.weather.gov/safety/flood
November 21, 2025 at 12:45 AM