Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 9, NWS Twin Cities, MN

June 2, 2020Blue Earth County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 2, 2020, 4:48 PM CDT for Blue Earth County, Nicollet County, Minnesota. It was in force for 27 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: Jun 2, 2020, 4:48 PM CDT (21:48 UTC)
Expired: Jun 2, 2020, 5:15 PM CDT
In force: 27 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 2.0 in
Wind: 60.0 mph

Counties Blue Earth County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 95 km from the middle of the area, began a volume at 21:48 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
Jun 2, 4:55 PM CDT	HAIL 1	Lake Crystal, MN	QUARTER SIZED HAIL REPORTED VIA TWITTER. PHOTO INCLUDED. TIME ESTIMATED.
Jun 2, 5:00 PM CDT	HAIL 2	2 Ene Lake Crystal, MN
Jun 2, 5:07 PM CDT	TORNADO	2 Ene Garden City, MN	MULTIPLE REPORTS OF A TORNADO OCCURRING NORTHEAST OF GARDEN CITY.
Jun 2, 5:09 PM CDT	HAIL 2.5	3 Nne Garden City, MN	DELAYED REPORT FROM TRAINED SPOTTER. NOTED HAIL DAMAGE TO VEGETATION.
Jun 2, 5:20 PM CDT	HAIL 1	1 Wnw Skyline, 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
Jun 2, 4:39 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.8 hours before the alert went out and 94 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: 55 J/kg
Mixed-layer CIN: -557 J/kg
Mixed-layer LCL: 2144 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -33 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

579 
WUUS53 KMPX 022148
SVRMPX
MNC013-103-022215-
/O.NEW.KMPX.SV.W.0009.200602T2148Z-200602T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
448 PM CDT Tue Jun 2 2020

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Central Blue Earth County in south central Minnesota...
  Southeastern Nicollet County in south central Minnesota...

* Until 515 PM CDT.

* At 448 PM CDT, a severe thunderstorm was located near Lake Crystal,
  or 8 miles southwest of Mankato, moving east at 20 mph.

  HAZARD...Two inch 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.

* Locations impacted include...
  Mankato, North Mankato, Lake Crystal, Eagle Lake, Nicollet, St.
  Clair, Good Thunder, Vernon Center, Pemberton, Garden City, Judson
  and Skyline.

This includes the following highways...
 U.S. Highway 14 between mile markers 116 and 143.
 U.S. Highway 169 between mile markers 35 and 58.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4398 9425 4429 9424 4417 9377 4391 9377
TIME...MOT...LOC 2148Z 291DEG 18KT 4411 9415 

HAIL...2.00IN
WIND...60MPH
 
$$

Dye

2 follow-up statements

469 
WWUS53 KMPX 022159
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
459 PM CDT Tue Jun 2 2020

MNC013-103-022215-
/O.CON.KMPX.SV.W.0009.000000T0000Z-200602T2215Z/
Blue Earth MN-Nicollet MN-
459 PM CDT Tue Jun 2 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR CENTRAL BLUE EARTH AND SOUTHEASTERN NICOLLET COUNTIES...

At 459 PM CDT, a severe thunderstorm was located near Good Thunder,
or near Mankato, moving east at 20 mph.

This is a very dangerous storm.

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

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be severely injured. 
         Expect shattered windows, extensive damage to roofs, 
         siding, and vehicles.

Locations impacted include...
Mankato, North Mankato, Lake Crystal, Eagle Lake, Nicollet, St.
Clair, Good Thunder, Vernon Center, Pemberton, Garden City, Judson
and Skyline.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.

&&

LAT...LON 4398 9425 4429 9424 4417 9377 4391 9377
TIME...MOT...LOC 2159Z 291DEG 18KT 4409 9408 

HAIL...2.75IN
WIND...60MPH
 
$$

Dye

306 
WWUS53 KMPX 022205
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
505 PM CDT Tue Jun 2 2020

MNC103-022215-
/O.CAN.KMPX.SV.W.0009.000000T0000Z-200602T2215Z/
Nicollet MN-
505 PM CDT Tue Jun 2 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NICOLLET COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
south central Minnesota.

LAT...LON 4402 9425 4420 9419 4420 9416 4419 9415
      4420 9414 4416 9406 4417 9401 4419 9401
      4419 9388 4394 9396
TIME...MOT...LOC 2205Z 282DEG 16KT 4410 9412 

$$

MNC013-022215-
/O.CON.KMPX.SV.W.0009.000000T0000Z-200602T2215Z/
Blue Earth MN-
505 PM CDT Tue Jun 2 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR CENTRAL BLUE EARTH COUNTY...

At 505 PM CDT, a severe thunderstorm was located near Lake Crystal,
or 8 miles southwest of Mankato, moving east at 20 mph.

This is a very dangerous storm.

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

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be severely injured. 
         Expect shattered windows, extensive damage to roofs, 
         siding, and vehicles.

This severe storm will be near...
  Mankato and Good Thunder around 520 PM CDT.

Other locations impacted by this severe thunderstorm include Skyline
and Garden City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.

&&

LAT...LON 4402 9425 4420 9419 4420 9416 4419 9415
      4420 9414 4416 9406 4417 9401 4419 9401
      4419 9388 4394 9396
TIME...MOT...LOC 2205Z 282DEG 16KT 4410 9412 

HAIL...3.00IN
WIND...60MPH
 
$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 12:07 PM CDT	Special Weather Statement	MPX	Douglas	23 min
Jun 2, 12:29 PM CDT	Special Weather Statement	MPX	Douglas	46 min
Jun 2, 1:09 PM CDT	Special Weather Statement	MPX	Morrison	36 min
Jun 2, 1:39 PM CDT	Special Weather Statement	MPX	Benton, Mille Lacs, Pope, Stearns, Swift	36 min
Jun 2, 2:12 PM CDT	Special Weather Statement	MPX	Benton, Pope, Stearns, Swift	33 min
Jun 2, 2:45 PM CDT	Special Weather Statement	MPX	Benton, Chippewa, Isanti, Kandiyohi, Lac qui Parle, Sherburne and 2 more	30 min
Jun 2, 3:14 PM CDT	Special Weather Statement	MPX	Chippewa, Chisago, Isanti, Kandiyohi, Sherburne, Stearns and 1 more	46 min
Jun 2, 3:41 PM CDT	Special Weather Statement	MPX	Anoka, Hennepin, Ramsey, Washington	64 min
Jun 2, 4:23 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Nicollet	37 min
Jun 2, 5:09 PM CDT	Tornado Warning Tornado observed	MPX	Blue Earth	36 min
Jun 2, 5:14 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Martin, Watonwan	31 min
Jun 2, 5:39 PM CDT	Tornado Warning Tornado observed	MPX	Blue Earth, Waseca	51 min
Jun 2, 5:42 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Martin, Watonwan	48 min
Jun 2, 6:18 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn, Steele, Waseca	42 min
Jun 2, 6:19 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	56 min
Jun 2, 6:32 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	58 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2020 Every severe thunderstorm warning in 2020

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.