Weather Alerts for SAN BERNADINO MTNS

Issued by the National Weather Service

Flood Watch  FLOOD WATCH   Flood Watch
SAN BERNADINO MTNS

Areas Affected:
San Bernardino County Mountains
Effective: Mon, 12/12 3:00am Updated: Fri, 12/9 9:28pm Urgency: Future
Expires: Mon, 12/12 6:00pm Severity:  Moderate  Certainty: Possible

 
Details:
...FLOOD WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
SUNDAY AFTERNOON...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...A portion of Southwest California, including the following
areas, the coastal slopes and foothills of the Riverside County
Mountains and San Bernardino County Mountains.
* WHEN...From late Sunday morning through Sunday afternoon.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded. Storm drains and ditches may
become clogged with debris. Minor mud and debris flows possible in
and below recent burn scars, including Apple, El Dorado, and
Fairview.
* ADDITIONAL DETAILS...
- A band of moderate to heavy rainfall is expected to move
through on Sunday. Strong south to southwest flow ahead of
the cold front will aid in orographic precipitation along
coastal slopes of the mountains. Hourly rain rates of one-
half inch or more will be possible with this storm.
- 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.

Winter Storm Watch  WINTER STORM WATCH   Winter Storm Watch
SAN BERNADINO MTNS

Areas Affected:
Riverside County Mountains - San Bernardino County Mountains
Effective: Sun, 12/11 6:00am Updated: Fri, 12/9 9:28pm Urgency: Future
Expires: Mon, 12/12 10:00pm Severity:  Moderate  Certainty: Possible

 
Details:
...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY EVENING ABOVE 5000 FEET...
* WHAT...Heavy snow possible. Total snow accumulations of 3 to 6
inches possible above 5000 ft, 4 to 9 inches possible above 6000
feet, and 8 to 15 inches possible above 7000 feet. 1 to 2 feet
possible above 8000 ft. Winds could gust as high as 60 mph.
* WHERE...San Bernardino County Mountains and Riverside County
Mountains.
* WHEN...From 6 AM Sunday through 6 PM Monday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the morning or evening
commute. Strong winds could cause tree damage.
* ADDITIONAL DETAILS...Snow levels will begin near 7000 ft Sunday
morning, falling to 4500-5500 ft Sunday evening, and 3500-400 ft
Sunday night. Light snow is possible through the Cajon Pass
Sunday night into Monday.

Information:
Monitor the latest forecasts for updates on this situation.