Alert archive / Montana / Red Flag Warnings in 2022

Red Flag Warning 3, NWS Billings, MT

September 2, 202211 counties in Montana; Sheridan County, Wyoming

NWS Billings, MT issued this red flag warning at Sep 2, 2022, 12:42 PM MDT for 11 counties in Montana; Sheridan County, Wyoming. It took effect at Sep 3, 2022, 12:00 PM MDT. It was in force for 33 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 2, 2022, 12:42 PM MDT (18:42 UTC)
In effect from
Sep 3, 2022, 12:00 PM MDT
Expired
Sep 4, 2022, 9:00 PM MDT
In force
33 hr
Issued by
NWS Billings, MT

Counties Big Horn County, MT, Carter County, MT, Custer County, MT, Fallon County, MT, Gallatin County, MT, Madison County, MT, Park County, MT, Powder River County, MT, Rosebud County, MT, Sweet Grass County, MT, Treasure County, MT, Sheridan County, WY

The radar

The Billings radar (KBLX), 75 km from the middle of the area, began a volume at 18:47 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

Great_falls, MT (KTFX), launched 12:00Z, 6.7 hours before the alert went out and 298 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, Great_falls, MT at 12:00Z on 2022-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Great_falls, MT at 12:00Z on 2022-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2587 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Billings, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 2, 1:10 AM MDTFire Weather WatchBYZBig Horn, Carter, Custer, Fallon, Gallatin, Madison and 5 more12 hr
Sep 2, 12:42 PM MDTFire Weather WatchBYZGallatin, Golden Valley, Madison, Musselshell, Park, Rosebud and 5 more13 hr

Nearby

Red Flag Warnings in Montana, 2022Red Flag Warnings in Wyoming, 2022Every red flag warning in 2022

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.