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Costa Mesa, CA Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Costa Mesa, CA
Elevation: 105ft
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Active Weather Alerts

Small Craft Advisory
Issued: 4:10 PM Dec. 31, 2025 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 9 AM
PST THURSDAY...

* WHAT...Hazardous sea conditions.

* WHERE...Inner waters from Point Mugu to San Mateo Pt. CA
including Santa Catalina and Anacapa Islands.

* WHEN...From noon today to 9 AM PST Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX)
for more.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

Marine Weather Statement
Issued: 3:48 PM Dec. 31, 2025 – National Weather Service
...CHANCE OF THUNDERSTORMS LATE NEW YEARS EVE THROUGH NEW YEARS
DAY...

A moist and unstable air mass will bring a chance of
thunderstorms to the coastal waters late December 31, 2025
through January 1, 2026, mainly for the waters south of Point
Conception including the immediate coasts of Orange, Los Angeles,
Ventura, and southern Santa Barbara counties. There is also low
chance for a thunderstorm to develop across the waters adjacent to
the Central Coast during the same time frame, and the Marine
Weather Statement (MWS) may need to be expanded to the waters
further north.

Any thunderstorm that forms will be capable of producing locally
gale force winds and rough seas, dangerous lightning, heavy
rainfall with reduced visibility, and waterspouts.

Flood Watch
Issued: 8:03 AM Dec. 31, 2025 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH THURSDAY
EVENING...

* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...A portion of Southwest California, including the following
areas: Orange County Coastal Areas, Orange County Inland Areas,
San Bernardino County Mountains, San Bernardino and Riverside
County Valleys-The Inland Empire and Santa Ana Mountains and
Foothills.

* WHEN...From this evening through Thursday 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. Low-water
crossings may be flooded. Minor flooding and debris flows possible
in and below recent burn scars.

* ADDITIONAL DETAILS...
- A warm low pressure system from the southwest will bring
periods of moderate to locally heavy precipitation tonight
through Thursday evening. The heaviest showers are likely to
occur Thursday morning. High soil moisture from last week's
heavy rainfall and will exacerbate the flooding threat in the
watch area.
- https://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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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