Alert archive / North Dakota / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 473

June 27, 20017 counties in Montana; 10 counties in North Dakota; Sheridan County, Wyoming

The Storm Prediction Center issued this severe thunderstorm watch at Jun 27, 2001, 2:00 PM MDT for 7 counties in Montana; 10 counties in North Dakota; Sheridan County, Wyoming. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 27, 2001, 2:00 PM MDT (20:00 UTC)
Expired
Jun 27, 2001, 9:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center

Counties Custer County, MT, Dawson County, MT, Fallon County, MT, Powder River County, MT, Prairie County, MT, Rosebud County, MT, Wibaux County, MT, Billings County, ND, Bowman County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, Mercer County, ND, Mountrail County, ND, Slope County, ND, Stark County, ND, Sheridan County, WY

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 27, 2:30 PM MDTSevere Thunderstorm WarningBYZFallon60 min
Jun 27, 2:51 PM MDTSevere Thunderstorm WarningGGWPrairie, Wibaux24 min
Jun 27, 2:55 PM MDTSevere Thunderstorm WarningBYZCuster35 min
Jun 27, 3:14 PM MDTSevere Thunderstorm WarningGGWPrairie, Wibaux61 min
Jun 27, 3:29 PM MDTSevere Thunderstorm WarningBYZCuster, Fallon61 min
Jun 27, 3:58 PM MDTSevere Thunderstorm WarningBISGolden Valley, Slope62 min
Jun 27, 4:15 PM MDTSevere Thunderstorm WarningGGWWibaux60 min
Jun 27, 4:56 PM MDTSevere Thunderstorm WarningGGWDawson64 min
Jun 27, 5:12 PM MDTSevere Thunderstorm WarningGGWWibaux63 min
Jun 27, 5:15 PM MDTSevere Thunderstorm WarningBYZSheridan35 min
Jun 27, 5:24 PM MDTSevere Thunderstorm WarningBISBowman51 min
Jun 27, 8:35 PM MDTSevere Thunderstorm WarningBISMountrail40 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.0 hours before the alert went out and 316 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, Bismarck Municip, ND at 12:00Z on 2001-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 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, Bismarck Municip, ND at 12:00Z on 2001-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 square meters per square second.1939Sfc1 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
73 J/kg
Mixed-layer CIN
-454 J/kg
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 North Dakota, 2001Severe Thunderstorm Watches in Montana, 2001Severe Thunderstorm Watches in Wyoming, 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.