Alert archive / North Dakota / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 458

June 22, 200214 counties in North Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 22, 2002, 10:30 PM CDT for 14 counties in North Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 22, 2002, 10:30 PM CDT (03:30 UTC)
Expired
Jun 23, 2002, 3:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Burleigh County, ND, Dunn County, ND, Emmons County, ND, Grant County, ND, Kidder County, ND, Logan County, ND, McIntosh County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Sheridan County, ND, Sioux County, ND, Wells County, ND

The radar

The Bismarck radar (KBIS), 32 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

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

IssuedProductOfficeCountiesLasted
Jun 22, 10:54 PM CDTSevere Thunderstorm WarningBISGrant66 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.5 hours before the alert went out and 31 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 00:00Z on 2002-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2213 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 00:00Z on 2002-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
2213 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
1101 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 22, 7:15 PM CDTSevere Thunderstorm WatchSPCAdams, Billings, Bowman, Golden Valley, Hettinger, McKenzie and 2 more5 hr
Jun 23, 2:15 PM CDTSevere Thunderstorm WatchSPCAdams, Billings, Bottineau, Bowman, Burke, Burleigh and 19 more6 hr
Jun 23, 4:00 PM CDTSevere Thunderstorm WatchSPCBarnes, Cass, Dickey, Emmons, Foster, Griggs and 10 more6 hr

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; radar from the NEXRAD Level II archive.