Alert archive / Minnesota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 13, NWS Twin Cities, MN

April 13, 2026Le Sueur County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 13, 2026, 5:40 PM CDT for Le Sueur County, Nicollet County, Minnesota. It was in force for 50 min. 5 reports 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: Apr 13, 2026, 5:40 PM CDT (22:40 UTC)
Expired: Apr 13, 2026, 6:30 PM CDT
In force: 50 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Le Sueur County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 61 km from the middle of the area, began a volume at 22:41 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
Apr 13, 5:48 PM CDT	HAIL 2	3 E Nicollet, MN
Apr 13, 6:12 PM CDT	HAIL 1.5	St. Peter, MN	Report from mPING: Ping Pong Ball (1.50 in.).
Apr 13, 6:13 PM CDT	HAIL 2.5	1 S St. Peter, MN	Report from mPING: Tennis Ball (2.50 in.).
Apr 13, 6:17 PM CDT	HAIL 2.75	1 S St. Peter, MN	Report from mPING: Baseball (2.75 in.).
Apr 13, 6:34 PM CDT	HAIL 1.75	Cleveland, MN	Report from mPING: Golf Ball (1.75 in.).

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 13, 3:11 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.7 hours before the alert went out and 60 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: 8 J/kg
Mixed-layer CIN: -259 J/kg
Mixed-layer LCL: 1506 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

650 
WUUS53 KMPX 132240
SVRMPX
MNC079-103-132330-
/O.NEW.KMPX.SV.W.0013.260413T2240Z-260413T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
540 PM CDT Mon Apr 13 2026

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northwestern Le Sueur County in south central Minnesota...
  Eastern Nicollet County in south central Minnesota...

* Until 630 PM CDT.

* At 540 PM CDT, a severe thunderstorm was located near Nicollet, or
  11 miles northwest of Mankato, moving northeast at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage to
           roofs, siding, and trees.

* Locations impacted include...
  Nicollet, Oshawa, Kasota, St. Peter, Ottawa, Cleveland, Le Sueur
  and St Henry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.

A Tornado Watch remains in effect until 1000 PM CDT Monday for a
portion of south central Minnesota.

&&

LAT...LON 4421 9421 4427 9426 4446 9401 4446 9392
      4447 9392 4447 9393 4448 9392 4447 9391
      4448 9390 4434 9372
TIME...MOT...LOC 2240Z 229DEG 18KT 4428 9413

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CTG

2 follow-up statements

379 
WWUS53 KMPX 132253
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
553 PM CDT Mon Apr 13 2026

MNC079-103-132330-
/O.CON.KMPX.SV.W.0013.000000T0000Z-260413T2330Z/
Le Sueur MN-Nicollet MN-
553 PM CDT Mon Apr 13 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHWESTERN LE SUEUR AND EASTERN NICOLLET COUNTIES...

At 553 PM CDT, a severe thunderstorm was located near St. Peter, or
12 miles north of Mankato, moving northeast at 20 mph.

HAZARD...Two inch hail and 60 mph wind gusts.

SOURCE...Public reported.

IMPACT...People and animals outdoors will be injured. Expect hail
         damage to roofs, siding, windows, and vehicles. Expect wind
         damage to roofs, siding, and trees.

Locations impacted include...
  Nicollet, Oshawa, Kasota, St. Peter, Ottawa, Cleveland, Le Sueur
  and St Henry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm has produced dangerous hail
and is capable of producing damaging winds.

A Tornado Watch remains in effect until 1000 PM CDT Monday for a
portion of south central Minnesota.

&&

LAT...LON 4421 9421 4427 9426 4446 9401 4446 9392
      4447 9392 4447 9393 4448 9392 4447 9391
      4448 9390 4434 9372
TIME...MOT...LOC 2240Z 229DEG 18KT 4429 9413

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CTG

728 
WWUS53 KMPX 132305
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
605 PM CDT Mon Apr 13 2026

MNC079-103-132330-
/O.CON.KMPX.SV.W.0013.000000T0000Z-260413T2330Z/
Le Sueur MN-Nicollet MN-
605 PM CDT Mon Apr 13 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHWESTERN LE SUEUR AND NORTHEASTERN NICOLLET COUNTIES...

At 605 PM CDT, a severe thunderstorm was located near St. Peter, or
14 miles north of Mankato, moving northeast at 20 mph.

HAZARD...Two inch hail and 60 mph wind gusts.

SOURCE...Public reported.

IMPACT...People and animals outdoors will be injured. Expect hail
         damage to roofs, siding, windows, and vehicles. Expect wind
         damage to roofs, siding, and trees.

Locations impacted include...
  Oshawa, Kasota, St. Peter, Ottawa, Cleveland, Le Sueur and St
  Henry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm has produced dangerous hail
and is capable of producing damaging winds.

A Tornado Watch remains in effect until 1000 PM CDT Monday for a
portion of south central Minnesota.

&&

LAT...LON 4425 9406 4432 9414 4446 9401 4446 9392
      4447 9392 4447 9393 4448 9392 4447 9391
      4448 9390 4434 9372
TIME...MOT...LOC 2253Z 229DEG 18KT 4433 9406

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CTG

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 3:19 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice	41 min
Apr 13, 3:47 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MPX	Goodhue	43 min
Apr 13, 3:54 PM CDT	Severe Thunderstorm Warning Destructive damage threat	MPX	Rice	35 min
Apr 13, 3:55 PM CDT	Tornado Warning	MPX	Rice	35 min
Apr 13, 4:09 PM CDT	Tornado Warning	MPX	Goodhue	58 min
Apr 13, 4:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MPX	Goodhue	61 min
Apr 13, 5:01 PM CDT	Flash Flood Warning	MPX	Goodhue	5 hr
Apr 13, 5:22 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	53 min
Apr 13, 5:27 PM CDT	Severe Thunderstorm Warning	MPX	Martin, Watonwan	48 min
Apr 13, 5:58 PM CDT	Tornado Warning	MPX	Blue Earth, Martin, Watonwan	47 min
Apr 13, 5:59 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Le Sueur, Rice	61 min
Apr 13, 6:04 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Nicollet	56 min
Apr 13, 6:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MPX	Le Sueur, Rice	65 min
Apr 13, 6:28 PM CDT	Tornado Warning Tornado observed	MPX	Blue Earth, Faribault, Martin	47 min
Apr 13, 6:40 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	65 min
Apr 13, 6:41 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Watonwan	58 min
Apr 13, 6:46 PM CDT	Severe Thunderstorm Warning	MPX	Watonwan	67 min
Apr 13, 6:48 PM CDT	Tornado Warning	MPX	Rice, Steele, Waseca	42 min
Apr 13, 6:52 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	53 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2026 Every severe thunderstorm warning in 2026

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.