Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 10, NWS Twin Cities, MN

April 5, 20214 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 5, 2021, 10:27 PM CDT for 4 counties in Minnesota. It was in force for 33 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: Apr 5, 2021, 10:27 PM CDT (03:27 UTC)
Expired: Apr 5, 2021, 11:00 PM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Carver County, MN, Hennepin County, MN, McLeod County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 29 km from the middle of the area, began a volume at 03:31 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 5, 10:27 PM CDT	HAIL 1	5 Nne Silver Lake, MN
Apr 5, 10:30 PM CDT	HAIL 1	Winsted, 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 00:00Z, 3.5 hours before the alert went out and 26 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: 1134 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 2481 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted.

252 
WUUS53 KMPX 060327
SVRMPX
MNC019-053-085-171-060400-
/O.NEW.KMPX.SV.W.0010.210406T0327Z-210406T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1027 PM CDT Mon Apr 5 2021

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southwestern Wright County in central Minnesota...
  Southwestern Hennepin County in east central Minnesota...
  Northeastern McLeod County in central Minnesota...
  Northern Carver County in east central Minnesota...

* Until 1100 PM CDT.

* At 1027 PM CDT, a severe thunderstorm was located over Winsted, or 
  17 miles southwest of Buffalo, moving east at 50 mph. Quarter 
  sized hail was reported in Silver Lake at 10:25 PM.

  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.

* This severe thunderstorm will be near...
  Watertown, Montrose and Mayer around 1035 PM CDT.
  Delano around 1040 PM CDT.
  Rockford and St. Bonifacius around 1045 PM CDT.
  Chanhassen, Mound, Orono, Victoria and Minnetrista around 1050 PM 
  CDT.
  Wayzata and Excelsior around 1055 PM CDT.

Other locations impacted by this severe thunderstorm include Loretto,
Hollywood, Greenwood, Shorewood, Lake Waconia, Long Lake, New
Germany, Hamel, Deephaven and Greenfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4482 9415 4503 9420 4511 9355 4487 9352
TIME...MOT...LOC 0327Z 263DEG 42KT 4496 9400 

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

TDH

2 follow-up statements

029 
WWUS53 KMPX 060340
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1040 PM CDT Mon Apr 5 2021

MNC085-060349-
/O.CAN.KMPX.SV.W.0010.000000T0000Z-210406T0400Z/
McLeod MN-
1040 PM CDT Mon Apr 5 2021

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

LAT...LON 4487 9352 4483 9400 4497 9401 4498 9407
      4504 9410 4506 9400 4511 9355
TIME...MOT...LOC 0339Z 263DEG 42KT 4498 9379 

$$

MNC019-053-171-060400-
/O.CON.KMPX.SV.W.0010.000000T0000Z-210406T0400Z/
Wright MN-Hennepin MN-Carver MN-
1040 PM CDT Mon Apr 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR SOUTH CENTRAL WRIGHT...SOUTHWESTERN HENNEPIN AND NORTHERN CARVER
COUNTIES...

At 1039 PM CDT, a severe thunderstorm was located near Watertown, or
14 miles south of Buffalo, moving east at 50 mph.

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

SOURCE...Trained weather spotters.

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

This severe storm will be near...
  Chanhassen, Mound, Orono, Victoria and Medina around 1050 PM CDT.
  Wayzata and Excelsior around 1055 PM CDT.

Other locations impacted by this severe thunderstorm include Loretto,
Hollywood, Greenwood, Shorewood, Lake Waconia, Long Lake, New
Germany, Hamel, Deephaven and Greenfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4487 9352 4483 9400 4497 9401 4498 9407
      4504 9410 4506 9400 4511 9355
TIME...MOT...LOC 0339Z 263DEG 42KT 4498 9379 

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

TDH

807 
WWUS53 KMPX 060354
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1054 PM CDT Mon Apr 5 2021

MNC019-053-171-060402-
/O.EXP.KMPX.SV.W.0010.000000T0000Z-210406T0400Z/
Wright MN-Hennepin MN-Carver MN-
1054 PM CDT Mon Apr 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL WRIGHT...
SOUTHWESTERN HENNEPIN AND NORTHERN CARVER COUNTIES WILL EXPIRE AT
1100 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

LAT...LON 4487 9352 4483 9400 4497 9401 4498 9407
      4504 9410 4506 9400 4511 9355
TIME...MOT...LOC 0352Z 263DEG 42KT 4499 9363 

$$

TDH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 7:37 PM CDT	Special Weather Statement	MPX	Renville	38 min
Apr 5, 7:40 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Wright	50 min
Apr 5, 8:19 PM CDT	Special Weather Statement	MPX	Kandiyohi, Meeker	41 min
Apr 5, 8:26 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti, Sherburne, Wright	49 min
Apr 5, 8:59 PM CDT	Special Weather Statement	MPX	Redwood	46 min
Apr 5, 9:00 PM CDT	Special Weather Statement	MPX	Meeker	45 min
Apr 5, 9:10 PM CDT	Special Weather Statement	MPX	Sherburne	35 min
Apr 5, 9:16 PM CDT	Severe Thunderstorm Warning	MPX	Sherburne, Stearns, Wright	29 min
Apr 5, 9:20 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	25 min
Apr 5, 9:30 PM CDT	Special Weather Statement	MPX	Renville	30 min
Apr 5, 9:45 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Wright	45 min
Apr 5, 9:48 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs	31 min
Apr 5, 9:54 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Meeker, Wright	36 min
Apr 5, 10:07 PM CDT	Special Weather Statement	MPX	Kanabec	8 min
Apr 5, 10:10 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec	20 min
Apr 5, 10:34 PM CDT	Special Weather Statement	MPX	Kanabec	26 min
Apr 5, 10:37 PM CDT	Special Weather Statement	MPX	Wright	23 min
Apr 5, 10:59 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Wright	46 min
Apr 5, 11:03 PM CDT	Special Weather Statement	MPX	Hennepin, Ramsey, Scott	42 min
Apr 5, 11:36 PM CDT	Special Weather Statement	MPX	Anoka	39 min
Apr 5, 11:45 PM CDT	Special Weather Statement	MPX	Anoka	45 min
Apr 5, 11:49 PM CDT	Special Weather Statement	MPX	Dakota, Washington	41 min

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.