Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 36, NWS Twin Cities, MN

May 9, 2001Goodhue County, Minnesota; Pepin County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 9, 2001, 7:29 PM CDT for Goodhue County, Minnesota; Pepin County, Wisconsin. It was in force for 61 min. No storm report in the archive falls 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.

The facts

Issued: May 9, 2001, 7:29 PM CDT (00:29 UTC)
Expired: May 9, 2001, 8:30 PM CDT
In force: 61 min
Issued by: NWS Twin Cities, MN
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Goodhue County, MN, Pepin County, WI

The radar

The Minneapolis radar (KMPX), 89 km from the middle of the area, began a volume at 00:31 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 9, 4:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 92 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: 1211 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1740 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 368 m²/s²
0-3 km storm-relative helicity: 795 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 8.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 100030
SVRMSP
MNC049-WIC091-100130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
729 PM CDT WED MAY 9 2001

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PEPIN COUNTY IN WEST CENTRAL WISCONSIN
  GOODHUE COUNTY IN SOUTHEAST MINNESOTA

* UNTIL 830 PM CDT

* AT 729 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS 6 MILES SOUTHWEST OF KENYON...OR ABOUT 10     
  MILES SOUTHEAST OF FARIBAULT...MOVING NORTHEAST AT 40 MPH. A SEVERE   
  THUNDERSTORM WAS INDICATED NEAR THE TOWN OF GOODHUE...IN GOODHUE      
  COUNTY.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  WANAMINGO.
  KENYON.
  GOODHUE.
  BELLECHESTER.
  STOCKHOLM.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 4428 9304 4420 9295 4448 9208 4451 9230

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:02 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	43 min
May 9, 7:05 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin	40 min
May 9, 7:09 PM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs, Morrison	51 min
May 9, 7:14 PM CDT	Severe Thunderstorm Warning	MPX	Scott	31 min
May 9, 7:26 PM CDT	Severe Thunderstorm Warning	MPX	Steele, Waseca	64 min
May 9, 7:26 PM CDT	Tornado Warning	MPX	Scott	34 min
May 9, 7:46 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	44 min
May 9, 7:46 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	44 min
May 9, 7:54 PM CDT	Tornado Warning	MPX	Dakota, Rice	36 min
May 9, 8:01 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs	44 min
May 9, 8:06 PM CDT	Tornado Warning	MPX	Kanabec, Mille Lacs	39 min
May 9, 8:10 PM CDT	Tornado Warning	MPX	Goodhue	35 min
May 9, 8:10 PM CDT	Tornado Warning	MPX	Steele	35 min
May 9, 8:44 PM CDT	Tornado Warning	MPX	Goodhue	31 min
May 9, 8:29 PM CDT	Tornado Warning	MPX	Barron	31 min
May 9, 8:35 PM CDT	Severe Thunderstorm Warning	MPX	Pepin, Pierce	55 min
May 9, 8:59 PM CDT	Tornado Warning	MPX	Barron, Rusk	46 min
May 9, 9:16 PM CDT	Tornado Warning	MPX	Pepin, Pierce	29 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2001 Severe Thunderstorm Warnings in Wisconsin, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.