Alert archive / California / Flash Flood Warnings in 2025

Flash Flood Warning 17, NWS Los Angeles, CA

September 2, 2025Ventura County, California

NWS Los Angeles, CA issued this flash flood warning at Sep 2, 2025, 4:15 PM PDT for Ventura County, California. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 2, 2025, 4:15 PM PDT (23:15 UTC)
Expired: Sep 2, 2025, 6:48 PM PDT
In force: 3 hr
Issued by: NWS Los Angeles, CA
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Ventura County, CA

The radar

The Los Angeles radar (KVTX), 8 km from the middle of the area, began a volume at 23:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Los Angeles, CA wrote its last area forecast discussion before this flash flood warning went out at Sep 2, 2:15 PM PDT, 2 hours earlier.

Area forecast discussion, Sep 2, 2:15 PM PDT, 2 hours before

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In the hours before

Special weather statement, Sep 2, 3:54 PM PDT, 21 minutes before

Special Weather Statement
National Weather Service OXNARD CA
354 PM PDT Tue Sep 2 2025

CAZ377-022330-
Northern Ventura County Mountains CA-
354 PM PDT Tue Sep 2 2025

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN VENTURA COUNTY
THROUGH 430 PM PDT...

At 352 PM PDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Mount Pinos, or 28 miles north of Ojai, moving
northeast at 5 mph. Other thunderstorms were developing in extreme
northwest Ventura County, and will also slowly drift northeastward.

HAZARD...Wind gusts of 50 to 55 mph. Locally heavy rain. Occasional
         lightning.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This storm will remain over mainly rural areas of northwestern
Ventura County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3488 11938 3488 11928 3486 11927 3486 11925
      3481 11924 3481 11920 3478 11921 3476 11928
      3480 11933 3481 11944 3490 11944 3490 11938
TIME...MOT...LOC 2252Z 218DEG 5KT 3486 11928

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

Cohen/Schoenfeld

Special weather statement, Sep 2, 4:07 PM PDT, 8 minutes before

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The office that day

Everything else NWS Los Angeles, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 2, 1:19 AM PDT	Small Craft Advisory	LOX		13 days
Sep 2, 4:22 AM PDT	Areal Flood Advisory	LOX	San Luis Obispo	112 min
Sep 2, 3:54 PM PDT	Special Weather Statement	LOX	Ventura	36 min
Sep 2, 4:07 PM PDT	Special Weather Statement	LOX	Ventura	23 min
Sep 2, 4:11 PM PDT	Severe Thunderstorm Warning	LOX	Ventura	64 min
Sep 2, 4:38 PM PDT	Special Weather Statement	LOX	Ventura	37 min

Nearby

Flash Flood Warnings in California, 2025 Every flash flood warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.