Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 62, NWS Aberdeen, SD

June 22, 1997Traverse County, Minnesota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 22, 1997, 10:33 PM CDT for Traverse County, Minnesota. It was in force for 47 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 22, 1997, 10:33 PM CDT (03:33 UTC)
Expired: Jun 22, 1997, 11:20 PM CDT
In force: 47 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County Traverse County, MN

The radar

The Aberdeen radar (KABR), 155 km from the middle of the area, began a volume at 03:34 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.

What was reported inside it

Time	Report	Where	Remark
Jun 22, 10:50 PM CDT	Hail 0.75	Wheaton, MN
Jun 22, 11:14 PM CDT	Hail 1.75	Wheaton, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 3.6 hours before the alert went out and 179 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: 1720 J/kg
Mixed-layer CIN: -221 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 320 m²/s²
0-3 km storm-relative helicity: 538 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 33.1

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 8:44 PM CDT, 1 hour 49 minutes earlier.

Area forecast discussion, Jun 22, 8:44 PM CDT, 1 hour 49 minutes before

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In the hours before

Local storm report, Jun 22, 5:20 PM CDT, 5 hours 13 minutes before

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Local storm report, Jun 22, 5:21 PM CDT, 5 hours 12 minutes before

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Local storm report, Jun 22, 8:20 PM CDT, 2 hours 13 minutes before

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Local storm report, Jun 22, 8:21 PM CDT, 2 hours 12 minutes before

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Special weather statement, Jun 22, 8:55 PM CDT, 1 hour 38 minutes before

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Special weather statement, Jun 22, 8:59 PM CDT, 1 hour 34 minutes before

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The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 22, 10:17 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	33 min
Jun 22, 10:26 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Walworth	49 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1997 Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.