Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 8, NWS Twin Cities, MN

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

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 2, 2020, 4:23 PM CDT for Blue Earth County, Brown County, Nicollet County, Minnesota. It was in force for 37 min. 2 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, 4:23 PM CDT (21:23 UTC)
Expired: Jun 2, 2020, 5:00 PM CDT
In force: 37 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Blue Earth County, MN, Brown County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 116 km from the middle of the area, began a volume at 21:23 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, 4:30 PM CDT	HAIL 1	5 Wnw Lake Crystal, MN
Jun 2, 4:30 PM CDT	HAIL 1.25	4 Ese Hanska, MN

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, 9.4 hours before the alert went out and 114 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.

909 
WUUS53 KMPX 022123
SVRMPX
MNC013-015-103-022200-
/O.NEW.KMPX.SV.W.0008.200602T2123Z-200602T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
423 PM CDT Tue Jun 2 2020

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southern Brown County in south central Minnesota...
  Northwestern Blue Earth County in south central Minnesota...
  South central Nicollet County in south central Minnesota...

* Until 500 PM CDT.

* At 423 PM CDT, a severe thunderstorm was located near Hanska, or 10
  miles southeast of New Ulm, moving east 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...
  Sleepy Eye, Courtland, Hanska, Comfrey and Searles. 

This includes U.S. Highway 14 between mile markers 84 and 87, and
between mile markers 109 and 115.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4411 9489 4418 9501 4429 9480 4428 9424
      4410 9425
TIME...MOT...LOC 2123Z 287DEG 25KT 4417 9437 

HAIL...1.00IN
WIND...60MPH
 
$$

Dye

2 follow-up statements

431 
WWUS53 KMPX 022140
SVSMPX

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

MNC013-015-103-022200-
/O.CON.KMPX.SV.W.0008.000000T0000Z-200602T2200Z/
Brown MN-Blue Earth MN-Nicollet MN-
440 PM CDT Tue Jun 2 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR SOUTHERN BROWN...NORTHWESTERN BLUE EARTH AND SOUTH CENTRAL
NICOLLET COUNTIES...

At 439 PM CDT, a severe thunderstorm was located over Lake Crystal,
or 11 miles west of Mankato, moving east at 30 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Trained weather spotters.

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

Locations impacted include...
Sleepy Eye, Courtland, Hanska, Comfrey and Searles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4411 9489 4418 9501 4429 9480 4428 9424
      4410 9425
TIME...MOT...LOC 2139Z 287DEG 25KT 4414 9421 

HAIL...1.25IN
WIND...60MPH
 
$$

Dye

795 
WWUS53 KMPX 022154
SVSMPX

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

MNC013-015-103-022203-
/O.EXP.KMPX.SV.W.0008.000000T0000Z-200602T2200Z/
Brown MN-Blue Earth MN-Nicollet MN-
454 PM CDT Tue Jun 2 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BROWN...NORTHWESTERN
BLUE EARTH AND SOUTH CENTRAL NICOLLET COUNTIES WILL EXPIRE AT 500 PM
CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

Remember, a Severe Thunderstorm Warning still remains in effect for
southern Nicollet and central Blue Earth Counties.

LAT...LON 4411 9489 4418 9501 4429 9480 4428 9424
      4410 9425
TIME...MOT...LOC 2153Z 287DEG 25KT 4411 9409 

$$

Dye

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, 4:48 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Nicollet	27 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.