Alert archive / Minnesota / Tornado Warnings in 2025

Tornado Warning 81, NWS Twin Cities, MN

September 4, 2025Le Sueur County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Sep 4, 2025, 6:45 PM CDT for Le Sueur County, Nicollet County, Minnesota. It was in force for 30 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Sep 4, 2025, 6:45 PM CDT (23:45 UTC)
Expired: Sep 4, 2025, 7:15 PM CDT
In force: 30 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Le Sueur County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 58 km from the middle of the area, began a volume at 23:48 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
Sep 4, 6:45 PM CDT	TORNADO	8 Wsw Le Sueur, MN	Delayed report. A tornado hit a farmstead, knocking down and breaking multiple trees across the property. Timing via radar. No other damage reported yet.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.8 hours before the alert went out and 57 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: 1023 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

414 
WFUS53 KMPX 042345
TORMPX
MNC079-103-050015-
/O.NEW.KMPX.TO.W.0081.250904T2345Z-250905T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
645 PM CDT Thu Sep 4 2025

The National Weather Service in the Twin Cities has issued a

* Tornado Warning for...
  Central Le Sueur County in south central Minnesota...
  Northeastern Nicollet County in south central Minnesota...

* Until 715 PM CDT.

* At 645 PM CDT, a severe thunderstorm capable of producing a 
  tornado was located near St. Peter, or 16 miles north of Mankato, 
  moving east at 55 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught
           without shelter. Mobile homes will be damaged or
           destroyed. Damage to roofs, windows and vehicles will
           occur. Tree damage is likely.

* This tornadic storm will remain over mainly rural areas of Central 
  Le Sueur and Northeastern Nicollet Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built 
building away from windows. If you are outdoors, in a mobile home, 
or in a vehicle, move to the closest substantial shelter and protect 
yourself from flying debris.

&&

LAT...LON 4438 9410 4446 9408 4446 9352 4425 9353
      4421 9354
TIME...MOT...LOC 2345Z 280DEG 48KT 4439 9402

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

CTG

2 follow-up statements

340 
WWUS53 KMPX 042359
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
659 PM CDT Thu Sep 4 2025

MNC103-050009-
/O.CAN.KMPX.TO.W.0081.000000T0000Z-250905T0015Z/
Nicollet MN-
659 PM CDT Thu Sep 4 2025

...TORNADO WARNING IS CANCELLED FOR NORTHEASTERN NICOLLET COUNTY...

The storm which prompted the warning has moved out of the area. 
Therefore, the warning has been cancelled. However, gusty winds are 
still possible with this thunderstorm.

&&

LAT...LON 4446 9389 4446 9352 4437 9352 4425 9353
      4421 9354 4433 9393
TIME...MOT...LOC 2345Z 280DEG 48KT 4439 9401

$$


MNC079-050015-
/O.CON.KMPX.TO.W.0081.000000T0000Z-250905T0015Z/
Le Sueur MN-
659 PM CDT Thu Sep 4 2025

...TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR SOUTHERN 
LE SUEUR COUNTY...

At 659 PM CDT, a severe thunderstorm capable of producing a tornado 
was located over Le Center, or 17 miles northeast of Mankato, moving 
east at 55 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed.
         Damage to roofs, windows and vehicles will occur. Tree
         damage is likely.

This tornadic storm will remain over mainly rural areas of Southern 
Le Sueur County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built 
building away from windows. If you are outdoors, in a mobile home, 
or in a vehicle, move to the closest substantial shelter and protect 
yourself from flying debris.

&&

LAT...LON 4446 9389 4446 9352 4437 9352 4425 9353
      4421 9354 4433 9393
TIME...MOT...LOC 2345Z 280DEG 48KT 4439 9401

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

CTG

322 
WWUS53 KMPX 050009
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
709 PM CDT Thu Sep 4 2025

MNC079-050019-
/O.EXP.KMPX.TO.W.0081.000000T0000Z-250905T0015Z/
Le Sueur MN-
709 PM CDT Thu Sep 4 2025

...TORNADO WARNING WILL EXPIRE AT 715 PM CDT FOR SOUTHERN LE SUEUR 
COUNTY...

The storm which prompted the warning has weakened below severe 
limits, and no longer appears capable of producing a tornado. 
Therefore, the warning will be allowed to expire. However, gusty 
winds are still possible with this thunderstorm.

&&

LAT...LON 4446 9389 4446 9352 4437 9352 4425 9353
      4421 9354 4433 9393
TIME...MOT...LOC 2359Z 280DEG 48KT 4435 9375

$$

CTG

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 1:11 PM CDT	Wind Advisory	MPX	Chippewa, Lac qui Parle, Stevens, Swift, Yellow Medicine	9 hr
Sep 4, 5:05 PM CDT	Special Weather Statement	MPX	Chippewa, Redwood, Renville, Yellow Medicine	55 min
Sep 4, 5:36 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet, Redwood, Renville	39 min
Sep 4, 6:09 PM CDT	Special Weather Statement	MPX	Blue Earth, Brown, Nicollet, Watonwan	51 min

Nearby

Tornado Warnings in Minnesota, 2025 Every tornado warning in 2025 Tornadoes in 2025

Sources

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