Alert archive / Idaho / Flash Flood Warnings in 2026

Flash Flood Warning 9, NWS Boise, ID

August 15, 2026Gem County, Idaho

NWS Boise, ID issued this flash flood warning at Aug 15, 2026, 6:37 PM MDT for Gem County, Idaho. It was in force for 101 min. 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 15, 2026, 6:37 PM MDT (00:37 UTC)
Expired
Aug 15, 2026, 8:18 PM MDT
In force
101 min
Issued by
NWS Boise, ID
Area
Storm-based polygon
Flood severity
None

County Gem County, ID

The radar

The Boise radar (KCBX), 65 km from the middle of the area, began a volume at 00:37 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 Boise, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 15, 6:01 PM MDTSpecial Weather StatementBOIValley44 min
Aug 15, 7:02 PM MDTFlash Flood WarningBOIBoise118 min
Aug 15, 7:07 PM MDTSpecial Weather StatementBOIValley38 min
Aug 15, 7:37 PM MDTSpecial Weather StatementBOIValley53 min

Nearby

Flash Flood Warnings in Idaho, 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.