Alert archive / North Dakota / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 443

June 18, 200122 counties in North Dakota; 10 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 18, 2001, 6:00 AM CDT for 22 counties in North Dakota; 10 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 18, 2001, 6:00 AM CDT (11:00 UTC)
Expired
Jun 18, 2001, 11:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 32 counties

Barnes County, ND, Burleigh County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Foster County, ND, Grant County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Sioux County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Brown County, SD, Campbell County, SD, Corson County, SD, Day County, SD, Dewey County, SD, Edmunds County, SD, Marshall County, SD, McPherson County, SD, Roberts County, SD, Walworth County, SD

The radar

The Bismarck radar (KBIS), 60 km from the middle of the area, began a volume at 11:03 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

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

IssuedProductOfficeCountiesLasted
Jun 18, 6:10 AM CDTSevere Thunderstorm WarningABRCorson65 min
Jun 18, 6:19 AM CDTSevere Thunderstorm WarningBISGrant, Sioux56 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 11.0 hours before the alert went out and 56 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 2001-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 2001-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1344 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
163 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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 2:00 AM CDTSevere Thunderstorm WatchSPCAdams, Billings, Bowman, Golden Valley, Hettinger, Slope and 1 more5 hr
Jun 18, 12:00 AM CDTSevere Thunderstorm WatchSPCAurora, Beadle, Brule, Buffalo, Clark, Codington and 26 more6 hr
Jun 18, 5:15 AM CDTSevere Thunderstorm WatchSPCBrookings, Deuel, Grant, Lake, Moody, Roberts6 hr

Nearby

Severe Thunderstorm Watches in North Dakota, 2001Severe Thunderstorm Watches in South Dakota, 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.