Alert archive / Minnesota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 21, NWS Sioux Falls, SD

April 28, 2025Cottonwood County, Jackson County, Nobles County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 28, 2025, 3:02 PM CDT for Cottonwood County, Jackson County, Nobles County, Minnesota. It was in force for 43 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 28, 2025, 3:02 PM CDT (20:02 UTC)
Expired: Apr 28, 2025, 3:45 PM CDT
In force: 43 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Cottonwood County, MN, Jackson County, MN, Nobles County, MN

The radar

The Sioux Falls radar (KFSD), 134 km from the middle of the area, began a volume at 20:03 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 28, 3:06 PM CDT	HAIL 1	3 Se Brewster, MN
Apr 28, 3:16 PM CDT	HAIL 1	Windom, MN
Apr 28, 3:18 PM CDT	HAIL 1	4 Ene Round Lake, MN	ground covered in nickel to quarter size hail.
Apr 28, 3:25 PM CDT	HAIL 0.88	1 W Mountain Lake, MN	Dime to nickel size hail.
Apr 28, 3:33 PM CDT	TSTM WND GST 60	5 Nw Jackson, MN

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 28, 12:29 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.0 hours before the alert went out and 161 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: 592 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 323 m²/s²
0-3 km storm-relative helicity: 334 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

600 
WUUS53 KFSD 282002
SVRFSD
MNC033-063-105-282045-
/O.NEW.KFSD.SV.W.0021.250428T2002Z-250428T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
302 PM CDT Mon Apr 28 2025

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Jackson County in southwestern Minnesota...
  Southeastern Nobles County in southwestern Minnesota...
  Cottonwood County in southwestern Minnesota...

* Until 345 PM CDT.

* At 302 PM CDT, severe thunderstorms were located along a line
  extending from near Springfield to 6 miles east of Jeffers to near
  Windom, moving northeast at 130 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  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.

* Severe thunderstorms will be near...
  Comfrey around 310 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Sioux Falls.

A Tornado Watch remains in effect until 800 PM CDT for northwestern
Iowa...and southwestern Minnesota.

&&

LAT...LON 4350 9486 4350 9562 4376 9538 4393 9536
      4420 9536 4419 9510 4411 9509 4411 9487
      4409 9485 4385 9486
TIME...MOT...LOC 2002Z 223DEG 114KT 4426 9502 4407 9507 4386 9523 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

IG

2 follow-up statements

621 
WWUS53 KFSD 282011 RRA
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
311 PM CDT Mon Apr 28 2025

MNC033-063-105-282045-
/O.CON.KFSD.SV.W.0021.000000T0000Z-250428T2045Z/
Jackson MN-Nobles MN-Cottonwood MN-
311 PM CDT Mon Apr 28 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR JACKSON...SOUTHEASTERN NOBLES AND COTTONWOOD COUNTIES...

At 311 PM CDT, severe thunderstorms were located along a line
extending from Comfrey to near Bingham Lake to near Lakefield, moving
northeast at 60 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

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.

These severe storms will be near...
  Comfrey, Bergen, Mountain Lake, Bingham Lake, Windom, and Kilen 
  Woods State Park around 315 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for northwestern
Iowa...and southwestern Minnesota.

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Sioux Falls.

&&

LAT...LON 4350 9486 4350 9562 4376 9538 4393 9536
      4420 9536 4419 9510 4411 9509 4411 9487
      4409 9485 4385 9486
TIME...MOT...LOC 2011Z 239DEG 54KT 4411 9493 4394 9502 4374 9521 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

IG

052 
WWUS53 KFSD 282034
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
334 PM CDT Mon Apr 28 2025

MNC105-282044-
/O.CAN.KFSD.SV.W.0021.000000T0000Z-250428T2045Z/
Nobles MN-
334 PM CDT Mon Apr 28 2025

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NOBLES COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM CDT for southwestern
Minnesota.

&&

LAT...LON 4350 9486 4351 9542 4372 9527 4394 9511
      4411 9501 4411 9487 4409 9485 4385 9486
TIME...MOT...LOC 2034Z 294DEG 25KT 4397 9484 4380 9493 4360 9512 

$$

MNC033-063-282045-
/O.CON.KFSD.SV.W.0021.000000T0000Z-250428T2045Z/
Jackson MN-Cottonwood MN-
334 PM CDT Mon Apr 28 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR JACKSON AND SOUTHEASTERN COTTONWOOD COUNTIES...

At 334 PM CDT, severe thunderstorms were located along a line
extending from near Butterfield to near Bergen to 6 miles southeast
of Lakefield, moving southeast at 30 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...
  Jackson In Jackson County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for southwestern
Minnesota.

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Sioux Falls.

&&

LAT...LON 4350 9486 4351 9542 4372 9527 4394 9511
      4411 9501 4411 9487 4409 9485 4385 9486
TIME...MOT...LOC 2034Z 294DEG 25KT 4397 9484 4380 9493 4360 9512 

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

$$

IG

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 28, 12:56 PM CDT	Severe Thunderstorm Warning	FSD	Rock	34 min
Apr 28, 1:28 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Murray, Nobles, Rock	47 min
Apr 28, 2:27 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Jackson, Murray, Nobles	48 min
Apr 28, 2:34 PM CDT	Tornado Warning	FSD	Cottonwood, Murray	26 min
Apr 28, 2:44 PM CDT	Severe Thunderstorm Warning	FSD	Jackson, Nobles	46 min
Apr 28, 3:42 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Jackson	33 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2025 Every severe thunderstorm warning 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.