Alert archive / Idaho / Flash Flood Warnings in 2026

Flash Flood Warning 3, NWS Boise, ID

July 17, 2026Boise County, Idaho

NWS Boise, ID issued this flash flood warning at Jul 17, 2026, 5:11 PM MDT for Boise County, Idaho. It was in force for 4 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
Jul 17, 2026, 5:11 PM MDT (23:11 UTC)
Expired
Jul 17, 2026, 9:15 PM MDT
In force
4 hr
Issued by
NWS Boise, ID
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

County Boise County, ID

The radar

The Boise radar (KCBX), 69 km from the middle of the area, began a volume at 23:11 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
Jul 16, 6:23 PM MDTSpecial Weather StatementBOICanyon52 min
Jul 16, 6:39 PM MDTSpecial Weather StatementBOIOwyhee51 min
Jul 16, 7:15 PM MDTSpecial Weather StatementBOIGem45 min
Jul 16, 8:00 PM MDTSpecial Weather StatementBOIGooding45 min
Jul 16, 8:17 PM MDTSpecial Weather StatementBOIValley43 min
Jul 16, 9:07 PM MDTSpecial Weather StatementBOIValley53 min
Jul 17, 5:28 AM MDTSpecial Weather StatementBOIAda32 min
Jul 17, 6:03 AM MDTSpecial Weather StatementBOICanyon27 min
Jul 17, 3:16 PM MDTSpecial Weather StatementBOITwin Falls29 min
Jul 17, 3:58 PM MDTSpecial Weather StatementBOIBoise32 min
Jul 17, 4:16 PM MDTAreal Flood AdvisoryBOITwin Falls3 hr
Jul 17, 4:32 PM MDTSpecial Weather StatementBOIOwyhee28 min
Jul 17, 4:48 PM MDTSpecial Weather StatementBOIGooding42 min
Jul 17, 4:55 PM MDTSpecial Weather StatementBOIOwyhee35 min
Jul 17, 5:00 PM MDTSevere Thunderstorm WarningBOIOwyhee29 min
Jul 17, 5:04 PM MDTSpecial Weather StatementBOIValley41 min
Jul 17, 5:22 PM MDTSpecial Weather StatementBOIOwyhee38 min
Jul 17, 5:28 PM MDTSpecial Weather StatementBOI32 min
Jul 17, 5:43 PM MDTSpecial Weather StatementBOIAda32 min
Jul 17, 5:50 PM MDTSpecial Weather StatementBOIElmore25 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.