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NOAA's National Weather Service
Each location shows all alerts on one page
WARNINGS - WATCHES - ADVISORIES - STATEMENTS
Updates every 15 Minutes
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| San Bernardino County | ||
| Effective: Mon, 12/22 6:37pm | Severity: Severe | |
| Updated: December 23, 2025 12:46 am | Urgency: Expected | |
| Expires: Tue, 12/23 6:15am | Certainty: Likely | |
| Areas Affected: San Bernardino County Mountains - Apple and Lucerne Valleys | ||
Alert
Details:
* WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. Isolated gusts to 75 mph. * WHERE...Apple and Lucerne Valleys and San Bernardino County Mountains. Strongest winds along the desert slopes of the mountains and adjacent desert foothills. * WHEN...From noon Tuesday to 3 PM PST Thursday. * IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. Information: Watch for falling debris and tree limbs. Use caution if you must drive. |
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| San Bernardino County | ||
| Effective: Mon, 12/22 6:37pm | Severity: Moderate | |
| Updated: December 23, 2025 12:46 am | Urgency: Expected | |
| Expires: Tue, 12/23 6:15am | Certainty: Likely | |
| Areas Affected: San Diego County Coastal Areas - San Bernardino and Riverside County Valleys-The Inland Empire - San Diego County Inland Valleys - Santa Ana Mountains and Foothills - Orange County Coastal - Orange County Inland | ||
Alert
Details:
* WHAT...South winds 15 to 25 mph with gusts 30 to 40 mph expected. * WHERE...Orange County Coastal Areas, Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...From 3 AM to 10 PM PST Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest winds for Orange County and the Inland Empire will be in the morning to early afternoon. Strongest winds for San Diego county will be mid to late morning into the evening. Information: Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. |
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| San Bernardino County | ||
| Effective: Tue, 12/23 12:13am | Severity: Severe | |
| Updated: December 23, 2025 12:46 am | Urgency: Future | |
| Expires: Tue, 12/23 2:00pm | Certainty: Possible | |
| Areas Affected: Lake Havasu and Fort Mohave - Northwest Deserts - Lake Mead National Recreation Area - Owens Valley - Death Valley National Park - Western Mojave Desert - Eastern Mojave Desert, Including the Mojave National Preserve - Morongo Basin - Cadiz Basin - San Bernardino County-Upper Colorado River Valley - Northeast Clark County - Western Clark and Southern Nye County - Spring Mountains-Red Rock Canyon - Las Vegas Valley - Lake Mead National Recreation Area - Southern Clark County | ||
Alert
Details:
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northwest Arizona, including the following areas, Lake Havasu and Fort Mohave, Lake Mead National Recreation Area and Northwest Deserts, southeast California, including the following areas, Cadiz Basin, Death Valley National Park, Eastern Mojave Desert, Morongo Basin, Owens Valley, San Bernardino County-Upper Colorado River Valley and Western Mojave Desert, and southern Nevada, including the following areas, Lake Mead National Recreation Area, Las Vegas Valley, Northeast Clark County, Southern Clark County, Spring Mountains-Red Rock Canyon and Western Clark and Southern Nye County. * WHEN...From late tonight through late Wednesday night. * 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. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood Information: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. |
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| San Bernardino County | ||
| Effective: Mon, 12/22 9:31pm | Severity: Severe | |
| Updated: December 23, 2025 12:46 am | Urgency: Future | |
| Expires: Tue, 12/23 6:15am | Certainty: Possible | |
| Areas Affected: San Bernardino and Riverside County Valleys-The Inland Empire - San Bernardino County Mountains - Riverside County Mountains - Santa Ana Mountains and Foothills - Apple and Lucerne Valleys - Coachella Valley - San Gorgonio Pass Near Banning - Orange County Coastal - Orange County Inland | ||
Alert
Details:
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of Southwest California, including the following areas, Apple and Lucerne Valleys, Coachella Valley, Orange County Coastal Areas, Orange County Inland Areas, Riverside County Mountains, San Bernardino County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Gorgonio Pass near Banning and Santa Ana Mountains and Foothills. * WHEN...From late Tuesday afternoon through Wednesday 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. Mud and debris flow are possible near and in burn scars, including the Airport, Bridge and Line burn scars. * ADDITIONAL DETAILS... - An Atmospheric River will bring widespread moderate to heavy rain to the region late Tuesday through Wednesday. Showers could begin to develop as early as Tuesday evening, especially in the eastern San Gabriel Mountains. Heaviest and most widespread rain is expected Wednesday morning for the northwest portion of the forecast area and then spreading southeast through the day. Peak rainfall rates of 0.50 to 1 inch per hour are expected. There is a potential for locally heavier hourly rainfall rates to develop with convection embedded in the main rain band or in thunderstorms after the main band passes. Scattered locally heavy showers could continue into Thursday but impacts from any additional rain are expected to be more localized. Snow levels are expected to remain above 8000 ft during period of heaviest precipitation bringing a heightened risk of mud slides, debris flow, and areas of flash flooding in the San Bernardino county mountains. - https://www.weather.gov/safety/flood Information: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Be alert in the mountains for rockslides and rocks in the road. |
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