Alert archive / Montana / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 453

June 22, 200216 counties in Montana

The Storm Prediction Center issued this severe thunderstorm watch at Jun 22, 2002, 1:45 PM MDT for 16 counties in Montana. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 22, 2002, 1:45 PM MDT (19:45 UTC)
Expired
Jun 22, 2002, 7:00 PM MDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Blaine County, MT, Chouteau County, MT, Fergus County, MT, Garfield County, MT, Golden Valley County, MT, Hill County, MT, Judith Basin County, MT, Liberty County, MT, Meagher County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Rosebud County, MT, Treasure County, MT, Valley County, MT, Wheatland County, MT

Warnings issued inside it

17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 22, 2:12 PM MDTSevere Thunderstorm WarningGGWPetroleum48 min
Jun 22, 2:26 PM MDTSevere Thunderstorm WarningGGWGarfield64 min
Jun 22, 2:29 PM MDTSevere Thunderstorm WarningGGWValley61 min
Jun 22, 2:31 PM MDTSevere Thunderstorm WarningGGWValley59 min
Jun 22, 2:32 PM MDTSevere Thunderstorm WarningGGWValley58 min
Jun 22, 2:42 PM MDTSevere Thunderstorm WarningGGWPhillips63 min
Jun 22, 2:45 PM MDTFlash Flood WarningGGWGarfield3 hr
Jun 22, 2:49 PM MDTSevere Thunderstorm WarningTFXFergus26 min
Jun 22, 3:13 PM MDTSevere Thunderstorm WarningGGWValley62 min
Jun 22, 3:20 PM MDTSevere Thunderstorm WarningTFXFergus55 min
Jun 22, 3:44 PM MDTSevere Thunderstorm WarningGGWPhillips61 min
Jun 22, 4:19 PM MDTSevere Thunderstorm WarningTFXBlaine41 min
Jun 22, 5:06 PM MDTSevere Thunderstorm WarningGGWPhillips69 min
Jun 22, 5:47 PM MDTSevere Thunderstorm WarningGGWGarfield, Prairie58 min
Jun 22, 6:24 PM MDTSevere Thunderstorm WarningGGWValley66 min
Jun 22, 6:44 PM MDTSevere Thunderstorm WarningBYZRosebud61 min
Jun 22, 6:47 PM MDTSevere Thunderstorm WarningBYZRosebud58 min

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 7.8 hours before the alert went out and 131 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, Glasgow Intl Airport, MT at 12:00Z on 2002-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1539 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, Glasgow Intl Airport, MT at 12:00Z on 2002-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
1539 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in Montana, 2002Every severe thunderstorm watch in 2002

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.