Active Weather Alerts
Flash Flood Warning
Issued: 12:36 AM Sep. 19, 2025 – National Weather Service
...FLASH FLOOD WARNING FOR THE LINE BURN SCAR REMAINS IN EFFECT UNTIL 715 PM PDT THIS EVENING FOR SAN BERNARDINO COUNTY... At 536 PM PDT, Doppler radar indicated thunderstorms producing heavy rain over the Line Burn Scar. Between 0.75 and 1.75 inches of rain have fallen. The expected rainfall rate is 0.75 inches in 1 hour. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow. The debris flow can consist of rock, mud, vegetation and other loose materials. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Line Burn Scar. SOURCE...Radar. IMPACT...Life threatening flash flooding of areas in and around the Line Burn Scar. Some locations that will experience flash flooding include... San Bernardino, Yucaipa, Highland, Running Springs, Angelus Oaks, Hwy 18 Between Running Springs And Big Bear, Mountain Home Village, Hiwy 330 Between San Bernardino And Running Springs, Hwy 18 Between Running Springs And Skyforest and Seven Oaks. PRECAUTIONARY/PREPAREDNESS ACTIONS... This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Line Burn Scar. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety. Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry arroyos is likely. The heavy rains will likely trigger rockslides, mudslides and debris flows in steep terrain, especially in and around these areas. && FLASH FLOOD...RADAR INDICATED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE; EXPECTED RAINFALL RATE...0.75 INCHES IN 1 HOUR
Special Weather Statement
Issued: 12:31 AM Sep. 19, 2025 – National Weather Service
...A STRONG THUNDERSTORM WILL IMPACT SAN BERNARDINO AND RIVERSIDE COUNTIES THROUGH 600 PM PDT... At 531 PM PDT, Doppler radar was tracking a strong thunderstorm over Highland, or near Redlands, moving north at 25 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... San Bernardino, Redlands, Yucaipa, Lake Arrowhead, Highland, Loma Linda, Big Bear Lake, Running Springs, Skyforest, Mentone, Hwy 18 Between Running Springs And Skyforest, Hwy 18 Between Running Springs And Big Bear, Hiwy 330 Between San Bernardino And Running Springs, Angelus Oaks, Mountain Home Village, Hwy 173 Between Lake Arrowhead And Hesperia, Hwy 38 Between Yucaipa And Onyx Summit, Cedar Glen, and Green Valley Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... If outdoors, consider seeking shelter inside a building. && MAX HAIL SIZE...0.50 IN; MAX WIND GUST...50 MPH
Flash Flood Warning
Issued: 12:26 AM Sep. 19, 2025 – National Weather Service
The National Weather Service in San Diego has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 800 PM PDT. * At 526 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Apple Valley, Lucerne Valley, Hwy 247 Between Lucerne Valley And Barstow and northwestern Johnson Valley. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Remain alert for flooding even in locations not receiving rain. Arroyos, streams, and rivers can become raging killer currents in a matter of minutes, even from distant rainfall. && FLASH FLOOD...RADAR INDICATED
Flood Advisory
Issued: 12:22 AM Sep. 19, 2025 – National Weather Service
...FLOOD ADVISORY NOW IN EFFECT UNTIL 626 PM PDT THIS EVENING... * WHAT...Urban and small stream flooding caused by excessive rainfall continues. * WHERE...A portion of Southwest California, including the following county, San Bernardino. * WHEN...Until 626 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. * ADDITIONAL DETAILS... - At 521 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. - Some locations that will experience flooding include... San Bernardino, Redlands, Yucaipa, Highland, Loma Linda, Mentone and Hwy 330 Between San Bernardino And Running Springs. - https://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. &&
Flash Flood Warning
Issued: 12:10 AM Sep. 19, 2025 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM PDT THIS EVENING FOR RIVERSIDE AND SAN BERNARDINO COUNTIES... At 510 PM PDT, local law enforcement reported thunderstorms producing heavy rain in Oak Glen, near Forest Falls. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts up to 0.5 inches are possible in the warned area. Flash flooding is already occurring. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Mount San Gorgonio, Forest Falls, Banning, northwestern Desert Hot Springs, Hwy 38 Between Yucaipa And Onyx Summit, Whitewater and Morongo Indian Reservation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry arroyos is likely. The heavy rains will likely trigger rockslides, mudslides and debris flows in steep terrain, especially in and around these areas. && FLASH FLOOD...OBSERVED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
Flash Flood Warning
Issued: 11:58 PM Sep. 18, 2025 – National Weather Service
The National Weather Service in San Diego has extended the * Flash Flood Warning for... San Bernardino County in southern California over and to the north and west of Big Bear Lake... * Until 645 PM PDT. * At 458 PM PDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 3 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Apple Valley, Lucerne Valley, Big Bear Lake, Hwy 18 Between Running Springs And Big Bear and Fawnskin. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. && FLASH FLOOD...RADAR AND GAUGE INDICATED
Flash Flood Warning
Issued: 11:48 PM Sep. 18, 2025 – National Weather Service
The National Weather Service in San Diego has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 715 PM PDT. * At 448 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 0.25 inches of rain have fallen. Additional rainfall amounts of 0.25 to 0.75 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Apple Valley, Lake Arrowhead, Lucerne Valley, Running Springs, Hwy 173 Between Lake Arrowhead And Hesperia, Hwy 18 Between Running Springs And Skyforest, Skyforest, Hwy 18 Between Running Springs And Big Bear, Cedar Glen and Green Valley Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. && FLASH FLOOD...RADAR INDICATED
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