Alert archive / California / Flash Flood Warnings in 2026
Flash Flood Warning 11, NWS Los Angeles, CA
NWS Los Angeles, CA issued this flash flood warning at Aug 11, 2026, 1:08 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
- Aug 11, 2026, 1:08 PM PDT (20:08 UTC)
- Expired
- Aug 11, 2026, 4:15 PM PDT
- In force
- 3 hr
- Issued by
- NWS Los Angeles, CA
- Area
- Storm-based polygon
- 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 20:09 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.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 8.1 hours before the alert went out and 249 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1119 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 12:44 PM PDT | Special Weather Statement | LOX | Ventura | 46 min |
| Aug 11, 12:50 PM PDT | Areal Flood Advisory | LOX | Ventura | 2 hr |
| Aug 11, 1:56 PM PDT | Areal Flood Advisory | LOX | Ventura | 3 hr |
| Aug 11, 2:36 PM PDT | Areal Flood Advisory | LOX | Santa Barbara | 2 hr |
| Aug 11, 2:56 PM PDT | Areal Flood Advisory | LOX | Ventura | 2 hr |
| Aug 11, 3:11 PM PDT | Special Weather Statement | LOX | Santa Barbara | 34 min |
Nearby
Flash Flood Warnings in California, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.