Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 52, NWS Twin Cities, MN

July 24, 2021Morrison County, Stearns County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 24, 2021, 1:37 AM CDT for Morrison County, Stearns County, Todd County, Minnesota. It was in force for 38 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: Jul 24, 2021, 1:37 AM CDT (06:37 UTC)
Expired: Jul 24, 2021, 2:15 AM CDT
In force: 38 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Morrison County, MN, Stearns County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 127 km from the middle of the area, began a volume at 06:42 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
Jul 24, 1:40 AM CDT	TSTM WND GST 60	2 Sse Sauk Centre, MN	KD39 MEASURED A 60 MPH WIND GUST.

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
Jul 23, 11:22 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 6.6 hours before the alert went out and 125 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: 2540 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1098 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

As transmitted.

373 
WUUS53 KMPX 240637
SVRMPX
MNC097-145-153-240715-
/O.NEW.KMPX.SV.W.0052.210724T0637Z-210724T0715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
137 AM CDT Sat Jul 24 2021

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southeastern Todd County in central Minnesota...
  Northern Stearns County in central Minnesota...
  Southwestern Morrison County in central Minnesota...

* Until 215 AM CDT.

* At 136 AM CDT, a severe thunderstorm was located near Melrose, or
  27 miles southwest of Little Falls, moving east at 40 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Grey Eagle around 140 AM CDT.
  Freeport around 145 AM CDT.
  St. Anthony and Albany around 150 AM CDT.
  Upsala around 155 AM CDT.

Other locations in the path of this severe thunderstorm include
Holdingford, Bowlus and Royalton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4582 9427 4582 9435 4578 9428 4574 9427
      4573 9424 4563 9420 4559 9502 4584 9502
      4603 9461 4605 9436
TIME...MOT...LOC 0636Z 261DEG 33KT 4572 9480 

HAIL...0.75IN
WIND...60MPH
 
$$

TDH

2 follow-up statements

972 
WWUS53 KMPX 240654
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
154 AM CDT Sat Jul 24 2021

MNC097-145-153-240715-
/O.CON.KMPX.SV.W.0052.000000T0000Z-210724T0715Z/
Todd MN-Stearns MN-Morrison MN-
154 AM CDT Sat Jul 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR SOUTHEASTERN TODD...NORTHERN STEARNS AND SOUTHWESTERN MORRISON
COUNTIES...

At 154 AM CDT, a severe thunderstorm was located over Upsala, or 15 
miles southwest of Little Falls, moving east at 35 mph. A wind gust 
of 60mph was reported in Sauk Centre around 140 AM.

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

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
  Flensburg, Holdingford, Bowlus and Royalton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4582 9427 4582 9435 4578 9428 4574 9427
      4573 9424 4563 9420 4559 9502 4584 9502
      4603 9461 4605 9436
TIME...MOT...LOC 0654Z 266DEG 29KT 4583 9461 

HAIL...0.75IN
WIND...60MPH
 
$$

TDH

816 
WWUS53 KMPX 240706
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
206 AM CDT Sat Jul 24 2021

MNC097-145-153-240716-
/O.EXP.KMPX.SV.W.0052.000000T0000Z-210724T0715Z/
Todd MN-Stearns MN-Morrison MN-
206 AM CDT Sat Jul 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TODD...NORTHERN
STEARNS AND SOUTHWESTERN MORRISON COUNTIES WILL EXPIRE AT 215 AM
CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
central Minnesota.

LAT...LON 4582 9427 4582 9435 4578 9428 4574 9427
      4573 9424 4563 9420 4559 9502 4584 9502
      4603 9461 4605 9436
TIME...MOT...LOC 0706Z 261DEG 33KT 4584 9449 

$$

TDH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 12:03 AM CDT	Special Weather Statement	MPX	Stevens	27 min
Jul 24, 12:36 AM CDT	Special Weather Statement	MPX	Swift	24 min
Jul 24, 1:07 AM CDT	Special Weather Statement	MPX	Pope	23 min
Jul 24, 1:09 AM CDT	Special Weather Statement	MPX	Douglas	36 min
Jul 24, 1:46 AM CDT	Special Weather Statement	MPX	Anoka	44 min
Jul 24, 1:50 AM CDT	Special Weather Statement	MPX	Douglas, Todd	40 min
Jul 24, 2:03 AM CDT	Severe Thunderstorm Warning	MPX	Chisago, Washington	25 min
Jul 24, 2:16 AM CDT	Special Weather Statement	MPX	Benton, Mille Lacs	44 min
Jul 24, 2:19 AM CDT	Special Weather Statement	MPX	Morrison	26 min
Jul 24, 2:27 AM CDT	Special Weather Statement	MPX	Chisago, Isanti	33 min
Jul 24, 3:06 AM CDT	Special Weather Statement	MPX	Kanabec	24 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.