Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 55, NWS Twin Cities, MN

June 10, 20014 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 10, 2001, 12:22 AM CDT for 4 counties in Minnesota. It was in force for 53 min. 3 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jun 10, 2001, 12:22 AM CDT (05:22 UTC)
Expired: Jun 10, 2001, 1:15 AM CDT
In force: 53 min
Issued by: NWS Twin Cities, MN
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Chippewa County, MN, Lac qui Parle County, MN, Swift County, MN, Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 161 km from the middle of the area, began a volume at 05:23 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.

What was reported inside it

Time	Report	Where	Remark
Jun 10, 12:30 AM CDT	Thunderstorm Wind 55 E	Nassau, MN	Machine shed down. Shingles off roofs. Numerous trees toppled.
Jun 10, 1:10 AM CDT	Thunderstorm Wind 60 E	Appleton, MN	Car blown off road.
Jun 10, 1:19 AM CDT	Tornado F0	Clarkfield, MN	Tornado touched down in open field. No damage reported.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 9, 10:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 5.4 hours before the alert went out and 172 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: 1849 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1555 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMPX 100523
SVRMSP
MNC023-073-151-173-100615-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1222 AM CDT SUN JUN 10 2001

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SWIFT COUNTY IN MINNESOTA
  CHIPPEWA COUNTY IN MINNESOTA
  YELLOW MEDICINE COUNTY IN MINNESOTA
  LAC QUI PARLE COUNTY IN MINNESOTA

* UNTIL 115 AM CDT

* AT 1222 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS 16 MILES SOUTHWEST OF MARIETTA...OR ABOUT
  24 MILES SOUTHWEST OF MADISON...MOVING EAST AT 20 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  MONTEVIDEO.
  MADISON.
  CANBY.
  BENSON.
  APPLETON.

THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 4511 9671 4466 9654 4472 9556 4536 9556
$$
 RJN

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 9, 11:17 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Renville, Sibley	58 min
Jun 10, 12:09 AM CDT	Severe Thunderstorm Warning	MPX	Stearns, Todd	51 min
Jun 10, 12:23 AM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker	52 min
Jun 10, 12:53 AM CDT	Tornado Warning	MPX	Lac qui Parle, Yellow Medicine	37 min
Jun 10, 1:20 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Redwood, Renville, Yellow Medicine	55 min
Jun 10, 1:20 AM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Swift	55 min
Jun 10, 2:05 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Martin, Watonwan	55 min
Jun 10, 2:05 AM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet	55 min
Jun 10, 2:05 AM CDT	Severe Thunderstorm Warning	MPX	McLeod, Sibley	55 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2001 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.