Alert archive / Montana / Red Flag Warnings in 2024

Red Flag Warning 13, NWS Billings, MT

October 3, 202417 counties in Montana; 4 counties in Wyoming

NWS Billings, MT issued this red flag warning at Oct 3, 2024, 5:36 PM MDT for 17 counties in Montana; 4 counties in Wyoming. It took effect at Oct 4, 2024, 12:00 PM MDT. It was in force for 30 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
Oct 3, 2024, 5:36 PM MDT (23:36 UTC)
In effect from
Oct 4, 2024, 12:00 PM MDT
Expired
Oct 5, 2024, 6:00 PM MDT
In force
30 hr
Issued by
NWS Billings, MT
All 21 counties

Big Horn County, MT, Carbon County, MT, Carter County, MT, Custer County, MT, Fallon County, MT, Gallatin County, MT, Golden Valley County, MT, Madison County, MT, Musselshell County, MT, Park County, MT, Powder River County, MT, Rosebud County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Wheatland County, MT, Yellowstone County, MT, Big Horn County, WY, Johnson County, WY, Sheridan County, WY, Washakie County, WY

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 11.6 hours before the alert went out and 288 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 2024-10-03Temperature 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 2024-10-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939587897117136Sfc1 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
1501 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
71 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
Oct 2, 7:07 PM MDTFire Weather WatchBYZBig Horn, Carbon, Gallatin, Golden Valley, Madison, Musselshell and 5 more22 hr
Oct 3, 2:52 AM MDTHigh Wind WatchBYZCarter, Custer, Fallon, Golden Valley, Rosebud, Stillwater and 2 more41 hr
Oct 3, 1:56 PM MDTWind AdvisoryBYZPark, Stillwater, Sweet Grass36 hr

Nearby

Red Flag Warnings in Montana, 2024Red Flag Warnings in Wyoming, 2024Every red flag warning in 2024

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.