Alert archive / Idaho / Red Flag Warnings in 2026
Red Flag Warning 23, NWS Pocatello, ID
NWS Pocatello, ID issued this red flag warning at Aug 31, 2026, 1:37 PM MDT for Blaine County, Boise County, Custer County, Idaho. It took effect at Sep 1, 2026, 1:00 PM MDT. It was in force for 24 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 31, 2026, 1:37 PM MDT (19:37 UTC)
- In effect from
- Sep 1, 2026, 1:00 PM MDT
- Expired
- Sep 2, 2026, 1:06 PM MDT
- In force
- 24 hr
- Issued by
- NWS Pocatello, ID
Counties Blaine County, ID, Boise County, ID, Custer County, ID
The radar
The Boise radar (KCBX), 134 km from the middle of the area, began a volume at 19:38 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
Salt Lake City I, UT (KSLC), launched 12:00Z, 7.6 hours before the alert went out and 413 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
- 39 J/kg
- Mixed-layer CIN
- -292 J/kg
- Mixed-layer LCL
- 1883 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Red Flag Warnings in Idaho, 2026Every red flag 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.