Alert archive / North Dakota / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 503

June 20, 20057 counties in Minnesota; 10 counties in North Dakota; 5 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 20, 2005, 5:20 AM CDT for 7 counties in Minnesota; 10 counties in North Dakota; 5 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jun 20, 2005, 5:20 AM CDT (10:20 UTC)
Expired: Jun 20, 2005, 10:00 AM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 22 counties

Becker County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Otter Tail County, MN, Traverse County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Brown County, SD, Campbell County, SD, Marshall County, SD, McPherson County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 105 km from the middle of the area, began a volume at 10:23 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

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

Issued	Product	Office	Counties	Lasted
Jun 20, 6:01 AM CDT	Severe Thunderstorm Warning	BIS	Emmons, Logan, McIntosh	59 min
Jun 20, 6:47 AM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure, Logan, McIntosh	58 min
Jun 20, 7:14 AM CDT	Severe Thunderstorm Warning	FGF	Ransom	61 min
Jun 20, 7:16 AM CDT	Severe Thunderstorm Warning	FGF	Sargent	59 min
Jun 20, 7:31 AM CDT	Flash Flood Warning	FGF	Ransom, Sargent	6 hr
Jun 20, 7:32 AM CDT	Severe Thunderstorm Warning	FGF	Barnes	58 min
Jun 20, 7:46 AM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	30 min
Jun 20, 7:55 AM CDT	Severe Thunderstorm Warning	FGF	Cass	65 min
Jun 20, 8:12 AM CDT	Severe Thunderstorm Warning	FGF	Ransom	48 min
Jun 20, 8:15 AM CDT	Severe Thunderstorm Warning	FGF	Sargent	61 min
Jun 20, 8:24 AM CDT	Severe Thunderstorm Warning	FGF	Richland	66 min
Jun 20, 8:33 AM CDT	Severe Thunderstorm Warning	FGF	Barnes	23 min
Jun 20, 9:02 AM CDT	Severe Thunderstorm Warning	FGF	Cass	43 min
Jun 20, 9:22 AM CDT	Severe Thunderstorm Warning	FGF	Clay	31 min
Jun 20, 9:25 AM CDT	Severe Thunderstorm Warning	FGF	Wilkin	65 min
Jun 20, 9:30 AM CDT	Tornado Warning	FGF	Richland	28 min
Jun 20, 9:38 AM CDT	Flash Flood Warning	FGF	Richland	12 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 10.3 hours before the alert went out and 178 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1635 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1322 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 19, 7:02 PM CDT	Mesoscale Discussion	SPC	Becker, Beltrami, Clay, Clearwater, Koochiching, Lake of the Woods and 7 more	118 min
Jun 19, 8:50 PM CDT	Severe Thunderstorm Watch	SPC	Koochiching, Saint Louis	5 hr
Jun 20, 7:39 AM CDT	Mesoscale Discussion	SPC	Becker, Clay, Douglas, Grant, Mahnomen, Norman and 4 more	96 min
Jun 20, 9:19 AM CDT	Mesoscale Discussion	SPC	Becker, Clay, Douglas, Grant, Mahnomen, Norman and 4 more	56 min
Jun 20, 10:42 AM CDT	Mesoscale Discussion	SPC	Becker, Clay, Douglas, Grant, Mahnomen, Norman and 4 more	63 min
Jun 20, 10:50 AM CDT	Severe Thunderstorm Watch	SPC	Anoka, Benton, Carver, Chippewa, Dakota, Douglas and 17 more	5 hr
Jun 20, 12:59 PM CDT	Mesoscale Discussion	SPC	Anoka, Blue Earth, Brown, Carver, Chippewa, Chisago and 30 more	91 min
Jun 20, 1:25 PM CDT	Severe Thunderstorm Watch	SPC	Blue Earth, Brown, Cottonwood, Faribault, Freeborn, Jackson and 17 more	7 hr
Jun 20, 2:17 AM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Golden Valley, Grant, Hettinger and 4 more	58 min
Jun 20, 3:00 AM CDT	Severe Thunderstorm Watch	SPC	Adams, Billings, Bowman, Golden Valley, Grant, Hettinger and 5 more	5 hr
Jun 20, 4:40 AM CDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Dickey, Emmons, Golden Valley and 11 more	95 min
Jun 20, 6:28 AM CDT	Mesoscale Discussion	SPC	Adams, Grant, Hettinger, Mercer, Morton, Oliver and 2 more	92 min
Jun 19, 7:55 PM CDT	Severe Thunderstorm Watch	SPC	Butte, Harding, Lawrence	7 hr
Jun 19, 11:43 PM CDT	Mesoscale Discussion	SPC	Lawrence	2 hr
Jun 20, 2:13 PM CDT	Mesoscale Discussion	SPC	Aurora, Bennett, Brule, Buffalo, Charles Mix, Douglas and 3 more	2 hr
Jun 20, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Lincoln, Union	6 hr
Jun 20, 4:09 PM CDT	Mesoscale Discussion	SPC	Lawrence, Pennington	2 hr

Nearby

Severe Thunderstorm Watches in North Dakota, 2005 Severe Thunderstorm Watches in Minnesota, 2005 Severe Thunderstorm Watches in South Dakota, 2005 Every severe thunderstorm watch in 2005

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.