Alert archive / North Dakota / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 658

August 31, 200227 counties in North Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Aug 31, 2002, 4:30 PM MDT for 27 counties in North Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Aug 31, 2002, 4:30 PM MDT (22:30 UTC)
Expired
Aug 31, 2002, 11:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
All 27 counties

Adams County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Dickey County, ND, Dunn County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Wells County, ND

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Aug 31, 4:47 PM MDTSevere Thunderstorm WarningBISMorton58 min
Aug 31, 5:30 PM MDTSevere Thunderstorm WarningBISBurleigh60 min
Aug 31, 5:45 PM MDTSevere Thunderstorm WarningBISMorton60 min
Aug 31, 6:30 PM MDTSevere Thunderstorm WarningBISBurleigh60 min
Aug 31, 6:41 PM MDTSevere Thunderstorm WarningBISMorton49 min
Aug 31, 6:56 PM MDTSevere Thunderstorm WarningBISKidder64 min
Aug 31, 7:27 PM MDTSevere Thunderstorm WarningBISBurleigh48 min
Aug 31, 8:06 PM MDTSevere Thunderstorm WarningBISSlope54 min
Aug 31, 8:13 PM MDTSevere Thunderstorm WarningBISMorton32 min
Aug 31, 8:15 PM MDTSevere Thunderstorm WarningBISEmmons, Logan60 min
Aug 31, 8:22 PM MDTSevere Thunderstorm WarningBISSioux53 min
Aug 31, 8:41 PM MDTSevere Thunderstorm WarningBISKidder, Stutsman64 min
Aug 31, 9:50 PM MDTSevere Thunderstorm WarningBISDickey, LaMoure, Logan, McIntosh55 min
Aug 31, 10:58 PM MDTSevere Thunderstorm WarningBISDickey62 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.5 hours before the alert went out and 86 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 2002-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 57 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 2002-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
57 J/kg
Mixed-layer CIN
-265 J/kg
Mixed-layer LCL
2053 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in North Dakota, 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.