Alert archive / Montana / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 478

June 28, 20018 counties in Montana

The Storm Prediction Center issued this severe thunderstorm watch at Jun 28, 2001, 9:30 PM MDT for 8 counties in Montana. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 28, 2001, 9:30 PM MDT (03:30 UTC)
Expired
Jun 29, 2001, 3:00 AM MDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Custer County, MT, Fallon County, MT, Golden Valley County, MT, Musselshell County, MT, Prairie County, MT, Rosebud County, MT, Treasure County, MT, Yellowstone County, MT

The radar

The Billings radar (KBLX), 120 km from the middle of the area, began a volume at 03:30 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 28, 9:41 PM MDTSevere Thunderstorm WarningBYZTreasure, Yellowstone64 min
Jun 28, 9:52 PM MDTSevere Thunderstorm WarningBYZCuster58 min
Jun 28, 10:28 PM MDTSevere Thunderstorm WarningBYZMusselshell32 min
Jun 28, 10:32 PM MDTTornado WarningBYZRosebud, Treasure58 min
Jun 28, 11:29 PM MDTTornado WarningBYZRosebud46 min
Jun 28, 11:44 PM MDTSevere Thunderstorm WarningBYZRosebud46 min
Jun 29, 12:00 AM MDTSevere Thunderstorm WarningBYZCuster60 min
Jun 29, 12:16 AM MDTSevere Thunderstorm WarningBYZRosebud74 min
Jun 29, 12:58 AM MDTSevere Thunderstorm WarningBYZCuster62 min
Jun 29, 1:10 AM MDTSevere Thunderstorm WarningBYZTreasure60 min
Jun 29, 1:30 AM MDTSevere Thunderstorm WarningBYZRosebud60 min
Jun 29, 1:59 AM MDTSevere Thunderstorm WarningBYZCuster61 min
Jun 29, 2:00 AM MDTSevere Thunderstorm WarningGGWPrairie60 min
Jun 29, 2:58 AM MDTSevere Thunderstorm WarningBYZCuster62 min

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.5 hours before the alert went out and 197 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 00:00Z on 2001-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 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 00:00Z on 2001-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
148 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
2160 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

Nearby

Severe Thunderstorm Watches in Montana, 2001Every severe thunderstorm watch in 2001

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.