Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 39, NWS Twin Cities, MN

June 17, 2021Goodhue County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2021, 7:44 PM CDT for Goodhue County, Minnesota. It was in force for 32 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 17, 2021, 7:44 PM CDT (00:44 UTC)
Expired: Jun 17, 2021, 8:16 PM CDT
In force: 32 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 2.0 in
Wind: 60.0 mph

County Goodhue County, MN

The radar

The Minneapolis radar (KMPX), 95 km from the middle of the area, began a volume at 00:48 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 17, 7:53 PM CDT	HAIL 1.5	Goodhue, MN	PICTURE FROM SOCIAL MEDIA.
Jun 17, 8:15 PM CDT	HAIL 1.5	6 Sw Vasa, MN	HAIL WAS MEASURED AND PHOTOGRAPHED. THIS WAS WITH THE SECOND WAVE OF HAIL.

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 17, 7:22 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.7 hours before the alert went out and 97 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: 61 J/kg
Mixed-layer CIN: -387 J/kg
Mixed-layer LCL: 1555 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

453 
WUUS53 KMPX 180044
SVRMPX
MNC049-180130-
/O.NEW.KMPX.SV.W.0039.210618T0044Z-210618T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
744 PM CDT Thu Jun 17 2021

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Central Goodhue County in southeastern Minnesota...

* Until 830 PM CDT.

* At 744 PM CDT, a severe thunderstorm was located near Goodhue, or
  14 miles southwest of Red Wing, moving east at 40 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.

* This severe thunderstorm will be near...
  Goodhue around 750 PM CDT.
  Frontenac around 815 PM CDT.

Other locations impacted by this severe thunderstorm include
Frontenac State Park, Wastedo, Bellechester, Central Point and Hader.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4443 9288 4456 9233 4452 9230 4450 9230
      4446 9224 4445 9243 4437 9243 4437 9254
      4433 9255 4431 9284
TIME...MOT...LOC 0044Z 260DEG 35KT 4439 9273 

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

Borghoff

3 follow-up statements

023 
WWUS53 KMPX 180056
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
756 PM CDT Thu Jun 17 2021

MNC049-180130-
/O.CON.KMPX.SV.W.0039.000000T0000Z-210618T0130Z/
Goodhue MN-
756 PM CDT Thu Jun 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR CENTRAL GOODHUE COUNTY...

At 755 PM CDT, a severe thunderstorm was located over Goodhue, or 11
miles south of Red Wing, moving east at 40 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.

This severe storm will be near...
  Frontenac around 815 PM CDT.

Other locations impacted by this severe thunderstorm include
Frontenac State Park, Bellechester and Central Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 4445 9278 4456 9233 4452 9230 4450 9230
      4446 9224 4445 9243 4437 9243 4437 9254
      4433 9255 4432 9274
TIME...MOT...LOC 0055Z 261DEG 35KT 4439 9257 

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

Borghoff

690 
WWUS53 KMPX 180106
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
806 PM CDT Thu Jun 17 2021

MNC049-180130-
/O.CON.KMPX.SV.W.0039.000000T0000Z-210618T0130Z/
Goodhue MN-
806 PM CDT Thu Jun 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR EAST CENTRAL GOODHUE COUNTY...

At 805 PM CDT, a severe thunderstorm was located 8 miles southwest of
Frontenac, or 12 miles southeast of Red Wing, moving east at 45 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.

This severe storm will be near...
  Frontenac around 810 PM CDT.

Other locations impacted by this severe thunderstorm include
Frontenac State Park and Central Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 4437 9251 4451 9252 4456 9233 4452 9230
      4450 9230 4446 9224 4445 9243 4437 9243
TIME...MOT...LOC 0105Z 269DEG 41KT 4440 9241 

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

Borghoff

792 
WWUS53 KMPX 180116
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
816 PM CDT Thu Jun 17 2021

MNC049-180126-
/O.CAN.KMPX.SV.W.0039.000000T0000Z-210618T0130Z/
Goodhue MN-
816 PM CDT Thu Jun 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL GOODHUE COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
southeastern Minnesota...and west central Wisconsin.

LAT...LON 4437 9251 4451 9252 4456 9233 4452 9230
      4450 9230 4446 9224 4445 9243 4437 9243
TIME...MOT...LOC 0114Z 260DEG 35KT 4442 9226 

$$

Borghoff

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:02 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice	58 min
Jun 17, 7:06 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Scott, Sibley	42 min
Jun 17, 7:41 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	26 min
Jun 17, 7:50 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	55 min
Jun 17, 8:00 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue	45 min
Jun 17, 8:28 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	34 min
Jun 18, 3:21 AM CDT	Red Flag Warning	MPX	Anoka, Benton, Carver, Chippewa, Chisago, Douglas and 20 more	16 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2021 Every severe thunderstorm warning in 2021

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.