Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 3, NWS Twin Cities, MN

April 5, 20214 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 5, 2021, 8:26 PM CDT for 4 counties in Minnesota. It was in force for 49 min. 1 report 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, 8:26 PM CDT (01:26 UTC)
Expired: Apr 5, 2021, 9:15 PM CDT
In force: 49 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Anoka County, MN, Isanti County, MN, Sherburne County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 49 km from the middle of the area, began a volume at 01:25 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, 8:34 PM CDT	HAIL 1	5 Nw St. Francis, MN	1 INCH HAIL REPORTED NEAR CROWN 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, 1.4 hours before the alert went out and 49 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.

626 
WUUS53 KMPX 060126
SVRMPX
MNC003-059-141-171-060215-
/O.NEW.KMPX.SV.W.0003.210406T0126Z-210406T0215Z/

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

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  East central Wright County in central Minnesota...
  Northern Anoka County in east central Minnesota...
  Southwestern Isanti County in east central Minnesota...
  Southeastern Sherburne County in central Minnesota...

* Until 915 PM CDT.

* At 826 PM CDT, a severe thunderstorm was located over Albertville,
  or 11 miles east of Buffalo, moving northeast 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.

* This severe thunderstorm will be near...
  Otsego around 835 PM CDT.
  Ramsey and St. Francis around 845 PM CDT.
  Andover and Anoka around 850 PM CDT.
  Ham Lake around 900 PM CDT.
  East Bethel around 915 PM CDT.

Other locations impacted by this severe thunderstorm include Nowthen,
Oak Grove, Bethel and Cedar.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4529 9304 4522 9345 4524 9351 4522 9353
      4523 9356 4520 9363 4531 9380 4551 9336
TIME...MOT...LOC 0126Z 244DEG 28KT 4525 9364 

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

BPH

2 follow-up statements

757 
WWUS53 KMPX 060201
SVSMPX

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

MNC059-141-171-060211-
/O.CAN.KMPX.SV.W.0003.000000T0000Z-210406T0215Z/
Wright MN-Isanti MN-Sherburne MN-
901 PM CDT Mon Apr 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WRIGHT...
SOUTHWESTERN ISANTI AND SOUTHEASTERN SHERBURNE COUNTIES IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4529 9304 4524 9333 4537 9351 4538 9352
      4542 9336 4541 9322
TIME...MOT...LOC 0201Z 244DEG 28KT 4537 9329 

$$

MNC003-060215-
/O.CON.KMPX.SV.W.0003.000000T0000Z-210406T0215Z/
Anoka MN-
901 PM CDT Mon Apr 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR NORTHERN ANOKA COUNTY...

At 901 PM CDT, a severe thunderstorm was located near East Bethel, or
11 miles south of Cambridge, moving northeast 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.

This severe storm will be near...
  East Bethel around 915 PM CDT.

Other locations impacted by this severe thunderstorm include Nowthen,
Oak Grove, Bethel and Cedar.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4529 9304 4524 9333 4537 9351 4538 9352
      4542 9336 4541 9322
TIME...MOT...LOC 0201Z 244DEG 28KT 4537 9329 

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

TDH

657 
WWUS53 KMPX 060207
SVSMPX

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

MNC003-060215-
/O.EXP.KMPX.SV.W.0003.000000T0000Z-210406T0215Z/
Anoka MN-
907 PM CDT Mon Apr 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ANOKA COUNTY WILL
EXPIRE AT 915 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.

LAT...LON 4529 9304 4524 9333 4537 9351 4538 9352
      4542 9336 4541 9322
TIME...MOT...LOC 0205Z 244DEG 28KT 4538 9326 

$$

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, 8:59 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, 10:27 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, McLeod, Wright	33 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.