Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 7, NWS Twin Cities, MN

May 1, 2001Le Sueur County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 1, 2001, 4:36 PM CDT for Le Sueur County, Minnesota. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 1, 2001, 4:36 PM CDT (21:36 UTC)
Expired: May 1, 2001, 5:15 PM CDT
In force: 39 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Le Sueur County, MN

The radar

The Minneapolis radar (KMPX), 55 km from the middle of the area, began a volume at 21:37 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 1, 3:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.6 hours before the alert went out and 54 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 771 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 012138
SVRMSP

MNC043-079-103-012215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
436 PM CDT TUE MAY 1 2001

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA
  BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA
  FARIBAULT COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 515 PM CDT

* AT 436 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS 5 MILES WEST OF VERNON CENTER...OR ABOUT 18
  MILES EAST OF ST JAMES...MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  MANKATO.
  BLUE EARTH.
  CLEVELAND.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:29 PM CDT	Severe Thunderstorm Warning	MPX	Martin	61 min
May 1, 4:24 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Sibley	51 min
May 1, 4:36 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault	39 min
May 1, 4:50 PM CDT	Tornado Warning	MPX	Blue Earth	25 min
May 1, 4:55 PM CDT	Tornado Warning	MPX	Carver	35 min
May 1, 5:06 PM CDT	Severe Thunderstorm Warning	MPX	Waseca	39 min
May 1, 5:13 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin	47 min
May 1, 5:18 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	42 min
May 1, 5:21 PM CDT	Tornado Warning	MPX	Anoka, Hennepin	24 min
May 1, 5:27 PM CDT	Severe Thunderstorm Warning	MPX	Steele	48 min
May 1, 5:35 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Ramsey, Washington	55 min
May 1, 5:37 PM CDT	Tornado Warning	MPX	Waseca	23 min
May 1, 5:49 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago	41 min
May 1, 6:03 PM CDT	Tornado Warning	MPX	Steele, Waseca	42 min
May 1, 6:31 PM CDT	Severe Thunderstorm Warning	MPX	Washington	29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.