Alert archive / Minnesota / Tornado Warnings in 2001

Tornado Warning 4, NWS La Crosse, WI

May 1, 2001Mower County, Minnesota

NWS La Crosse, WI issued this tornado warning at May 1, 2001, 7:44 PM CDT for Mower County, Minnesota. It was in force for 46 min. 1 report 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: May 1, 2001, 7:44 PM CDT (00:44 UTC)
Expired: May 1, 2001, 8:30 PM CDT
In force: 46 min
Issued by: NWS La Crosse, WI
Area: Whole counties

County Mower County, MN

What was reported inside it

Time	Report	Where	Remark
May 1, 7:52 PM CDT	Tornado F0	Elkton, 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 1, 3:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.7 hours before the alert went out and 147 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: 453 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 1677 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -70 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -4.0

Open this sounding in Storm Lab

The text

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

479 
WFUS53 KARX 020046
TORLSE
MNC099-020130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
744 PM CDT TUE MAY 1 2001

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  MOWER COUNTY IN SOUTHEAST MINNESOTA

* UNTIL 830 PM CDT

* AT 744 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 8 MILES WEST OF GRAND MEADOW...OR ABOUT 12 MILES EAST OF   
  AUSTIN...MOVING EAST AT 30 MPH. THIS IS A CONTINUATION OF THE      
  PREVIOUS TORNADO WARNING.

* THE TORNADO IS EXPECTED TO BE...
  NEAR ELKTON NOW  
  NEAR GRAND MEADOW AT 750 PM CDT...

THIS STORM HAS A HISTORY OF PRODUCING A TORNADO. GO TO THE BASEMENT
IF A BASEMENT IS NOT AVAILABLE...GO TO AN INTERIOR ROOM ON THE LOWEST
FLOOR

$$

RIECK

LAT...LON 4376 9278 4359 9274 4356 9247 4382 9247

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 1, 7:06 PM CDT	Tornado Warning	ARX	Mower	39 min
May 1, 7:27 PM CDT	Severe Thunderstorm Warning	ARX	Dodge, Olmsted	63 min
May 1, 7:51 PM CDT	Tornado Warning	ARX	Olmsted	39 min
May 1, 8:03 PM CDT	Tornado Warning	ARX	Fillmore	57 min
May 1, 8:10 PM CDT	Tornado Warning	ARX	Winona	50 min
May 1, 9:02 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Winona	58 min

Nearby

Tornado Warnings in Minnesota, 2001 Every tornado warning in 2001 Tornadoes 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.