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Updated:November 19, 2025 1:46 am PST

Flood Watch FLOOD WATCH  
San Bernardino County

  Effective: Tue, 11/18 3:16pm Severity:  Severe 
  Updated: November 19, 2025 1:46 am Urgency: Future
  Expires: Wed, 11/19 4:00am Certainty: Possible

Areas Affected: Lake Havasu and Fort Mohave - Northwest Deserts - Lake Mead National Recreation Area - Owens Valley - Death Valley National Park - Eastern Mojave Desert, Including the Mojave National Preserve - San Bernardino County-Upper Colorado River Valley - Northeast Clark County - Western Clark and Southern Nye County - 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, Death Valley National Park, Eastern Mojave
Desert, Owens Valley and San Bernardino County-Upper Colorado
River Valley, and southern Nevada, including the following areas,
Lake Mead National Recreation Area, Las Vegas Valley, Northeast
Clark County, Southern Clark County and Western Clark and Southern
Nye County.

* WHEN...Through late tonight.

* 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...
- A storm system will continue to move in through this evening
and tonight with areas of heavy rain spreading across much of
the Mojave Desert and Northwest Arizona. Embedded
thunderstorms are also expected which may produce locally
heavier rainfall. Combined with the wet soils from the
weekend storm system...storm run off will happen quickly and
may lead to rapid flooding of sensitive basins.
- 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.