Alert archive / California / Flash Flood Warnings in 2026

Flash Flood Warning 50, NWS Las Vegas, NV

September 28, 2026San Bernardino County, California

NWS Las Vegas, NV issued this flash flood warning at Sep 28, 2026, 6:20 PM PDT for San Bernardino 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 28, 2026, 6:20 PM PDT (01:20 UTC)
Expired
Sep 28, 2026, 9:15 PM PDT
In force
3 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

County San Bernardino County, CA

The radar

The Edwards AFB radar (KEYX), 129 km from the middle of the area, began a volume at 01:19 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 office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 28, 8:16 PM PDTAreal Flood AdvisoryVEFClark116 min
Sep 28, 8:42 PM PDTAreal Flood AdvisoryVEFClark90 min
Sep 28, 5:05 PM PDTFlash Flood Warning Considerable damage threatVEFSan Bernardino3 hr
Sep 28, 5:17 PM PDTSevere Thunderstorm WarningVEFSan Bernardino58 min
Sep 28, 9:16 PM PDTAreal Flood AdvisoryVEFSan Bernardino3 hr
Sep 28, 9:54 PM PDTAreal Flood AdvisoryVEFSan Bernardino4 hr

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; radar from the NEXRAD Level II archive.