Alert archive / Minnesota / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 650

August 28, 200212 counties in Minnesota; 7 counties in North Dakota; Marshall County, Roberts County, South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Aug 28, 2002, 5:35 PM CDT for 12 counties in Minnesota; 7 counties in North Dakota; Marshall County, Roberts County, South Dakota. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Aug 28, 2002, 5:35 PM CDT (22:35 UTC)
Expired: Aug 28, 2002, 10:00 PM CDT
In force: 4 hr
Issued by: the Storm Prediction Center

All 21 counties

Becker County, MN, Clay County, MN, Clearwater County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Mahnomen County, MN, Norman County, MN, Otter Tail County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Marshall County, SD, Roberts County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 127 km from the middle of the area, began a volume at 22:38 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

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

Issued	Product	Office	Counties	Lasted
Aug 28, 5:36 PM CDT	Severe Thunderstorm Warning	ABR	Marshall	24 min
Aug 28, 5:47 PM CDT	Tornado Warning	FGF	Wilkin	43 min
Aug 28, 5:55 PM CDT	Severe Thunderstorm Warning	FGF	Cass	35 min
Aug 28, 6:00 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Mahnomen	60 min
Aug 28, 6:01 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	44 min
Aug 28, 6:14 PM CDT	Flash Flood Warning	FGF	Wilkin	6 hr
Aug 28, 6:16 PM CDT	Flash Flood Warning	FGF	Wilkin	6 hr
Aug 28, 6:16 PM CDT	Severe Thunderstorm Warning	FGF	Clay	59 min
Aug 28, 6:44 PM CDT	Severe Thunderstorm Warning	FGF	Cass	61 min
Aug 28, 6:57 PM CDT	Flash Flood Warning	FGF	Becker, Clay, Mahnomen	6 hr
Aug 28, 7:09 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Otter Tail	51 min
Aug 28, 7:42 PM CDT	Tornado Warning	FGF	Cass	48 min
Aug 28, 7:58 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Hubbard	47 min
Aug 28, 8:05 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	40 min
Aug 28, 8:05 PM CDT	Flash Flood Warning	FGF	Cass	6 hr
Aug 28, 8:46 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail, Wadena	44 min

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.6 hours before the alert went out and 200 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: 1363 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 969 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in Minnesota, 2002 Severe Thunderstorm Watches in North Dakota, 2002 Severe Thunderstorm Watches in South Dakota, 2002 Every 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.