Alert archive / Montana / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 64, NWS Great Falls, MT

July 6, 2022Chouteau County, Hill County, Liberty County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jul 6, 2022, 7:13 PM MDT for Chouteau County, Hill County, Liberty County, Montana. It was in force for 62 min. 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 6, 2022, 7:13 PM MDT (01:13 UTC)
Expired
Jul 6, 2022, 8:15 PM MDT
In force
62 min
Issued by
NWS Great Falls, MT
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Chouteau County, MT, Hill County, MT, Liberty County, MT

The radar

The Great Falls radar (KTFX), 119 km from the middle of the area, began a volume at 01:17 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 6, 2:48 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 1.2 hours before the alert went out and 443 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, Spokane, WA at 00:00Z on 2022-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 322 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, Spokane, WA at 00:00Z on 2022-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
322 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1676 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
143 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 6:01 PM MDTSpecial Weather StatementTFXToole59 min
Jul 6, 6:05 PM MDTSpecial Weather StatementTFXBroadwater25 min
Jul 6, 6:14 PM MDTSpecial Weather StatementTFXJudith Basin46 min
Jul 6, 6:18 PM MDTSpecial Weather StatementTFXHill57 min
Jul 6, 6:21 PM MDTSevere Thunderstorm WarningTFXLiberty, Pondera, Toole54 min
Jul 6, 6:32 PM MDTSpecial Weather StatementTFXMeagher43 min
Jul 6, 6:33 PM MDTSevere Thunderstorm WarningTFXFergus, Judith Basin42 min
Jul 6, 6:42 PM MDTSpecial Weather StatementTFXFergus63 min
Jul 6, 6:44 PM MDTAreal Flood AdvisoryTFXFergus, Judith Basin2 hr
Jul 6, 6:48 PM MDTSevere Thunderstorm WarningTFXBroadwater, Lewis and Clark, Meagher57 min
Jul 6, 6:56 PM MDTSevere Thunderstorm WarningTFXHill, Liberty64 min
Jul 6, 7:20 PM MDTSpecial Weather StatementTFXChouteau55 min
Jul 6, 7:48 PM MDTSpecial Weather StatementTFXFergus27 min
Jul 6, 7:55 PM MDTSpecial Weather StatementTFXChouteau50 min
Jul 7, 10:05 AM MDTFlood WatchTFX14 hr
Jul 7, 1:07 PM MDTSpecial Weather StatementTFXGlacier23 min
Jul 7, 1:27 PM MDTSevere Thunderstorm WarningTFXGlacier63 min
Jul 7, 2:09 PM MDTSpecial Weather StatementTFXBeaverhead21 min
Jul 7, 2:30 PM MDTSpecial Weather StatementTFXGlacier30 min
Jul 7, 2:38 PM MDTSevere Thunderstorm WarningTFXTeton52 min
Jul 7, 2:43 PM MDTSpecial Weather StatementTFXBeaverhead47 min
Jul 7, 3:06 PM MDTSpecial Weather StatementTFXLewis and Clark24 min
Jul 7, 3:18 PM MDTSpecial Weather StatementTFXGallatin27 min
Jul 7, 3:21 PM MDTSevere Thunderstorm Warning Destructive damage threatTFXPondera, Teton24 min
Jul 7, 3:30 PM MDTSpecial Weather StatementTFXBeaverhead, Madison45 min
Jul 7, 3:38 PM MDTSpecial Weather StatementTFXLewis and Clark37 min
Jul 7, 3:46 PM MDTSevere Thunderstorm WarningTFXToole59 min
Jul 7, 3:56 PM MDTSevere Thunderstorm WarningTFXPondera, Teton46 min
Jul 7, 4:09 PM MDTSevere Thunderstorm WarningTFXCascade, Teton51 min
Jul 7, 4:39 PM MDTSevere Thunderstorm WarningTFXToole51 min
Jul 7, 4:51 PM MDTSevere Thunderstorm WarningTFXCascade, Chouteau, Pondera, Teton54 min
Jul 7, 5:35 PM MDTSevere Thunderstorm WarningTFXCascade, Chouteau, Teton55 min

Nearby

Severe Thunderstorm Warnings in Montana, 2022Every severe thunderstorm 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.