Alert archive / Idaho / Red Flag Warnings in 2023

Red Flag Warning 9, NWS Boise, ID

August 1, 202313 counties in Idaho

NWS Boise, ID issued this red flag warning at Aug 1, 2023, 2:56 PM MDT for 13 counties in Idaho. It took effect at Aug 3, 2023, 2:00 PM MDT. It was in force for . 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 1, 2023, 2:56 PM MDT (20:56 UTC)
In effect from
Aug 3, 2023, 2:00 PM MDT
Expired
Aug 1, 2023, 3:15 PM MDT
In force
Issued by
NWS Boise, ID

Counties Ada County, ID, Adams County, ID, Boise County, ID, Canyon County, ID, Elmore County, ID, Gem County, ID, Gooding County, ID, Jerome County, ID, Lincoln County, ID, Owyhee County, ID, Payette County, ID, Twin Falls County, ID, Washington County, ID

The radar

The Boise radar (KCBX), 40 km from the middle of the area, began a volume at 21:00 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, 8.9 hours before the alert went out and 437 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.

Skew-T log-pSkew-T log-p diagram, Salt Lake City I, UT at 12:00Z on 2023-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 99 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2023-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
99 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
2280 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
-19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Boise, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 1, 8:41 AM MDTRed Flag WarningBOIOwyhee, Twin Falls14 hr
Aug 1, 2:56 PM MDTRed Flag WarningBOIElmore, Gooding, Jerome, Lincoln, Owyhee, Twin Falls32 hr
Aug 1, 3:15 PM MDTFire Weather WatchBOIAda, Adams, Boise, Canyon, Elmore, Gem and 7 more22 hr

Nearby

Red Flag Warnings in Idaho, 2023Red Flag Warnings in Oregon, 2023Every red flag warning in 2023

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.