Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 54, NWS Twin Cities, MN

July 28, 2021Pope County, Stevens County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 28, 2021, 4:53 AM CDT for Pope County, Stevens County, Minnesota. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 28, 2021, 4:53 AM CDT (09:53 UTC)
Expired: Jul 28, 2021, 5:21 AM CDT
In force: 28 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Pope County, MN, Stevens County, MN

The radar

The Minneapolis radar (KMPX), 193 km from the middle of the area, began a volume at 09:52 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.9 hours before the alert went out and 190 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: 4029 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1142 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.6

Open this sounding in Storm Lab

The text

As transmitted.

745 
WUUS53 KMPX 280953
SVRMPX
MNC121-149-281045-
/O.NEW.KMPX.SV.W.0054.210728T0953Z-210728T1045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
453 AM CDT Wed Jul 28 2021

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Pope County in west central Minnesota...
  Eastern Stevens County in west central Minnesota...

* Until 545 AM CDT.

* At 453 AM CDT, a severe thunderstorm was located over Donnelly, or
  7 miles north of Morris, moving east at 50 mph.

  HAZARD...60 mph wind gusts and half dollar 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...
  Cyrus around 510 AM CDT.

Other locations in the path of this severe thunderstorm include
Starbuck.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4576 9604 4576 9526 4541 9548 4541 9572
      4559 9612
TIME...MOT...LOC 0953Z 292DEG 42KT 4569 9596 

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

Borghoff

2 follow-up statements

900 
WWUS53 KMPX 281005
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
505 AM CDT Wed Jul 28 2021

MNC121-149-281045-
/O.CON.KMPX.SV.W.0054.000000T0000Z-210728T1045Z/
Pope MN-Stevens MN-
505 AM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR WESTERN POPE AND NORTHEASTERN STEVENS COUNTIES...

At 505 AM CDT, a severe thunderstorm was located near Cyrus, or near
Morris, moving southeast at 45 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...
  Starbuck.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4576 9592 4576 9526 4541 9548 4545 9573
      4557 9597
TIME...MOT...LOC 1005Z 301DEG 41KT 4559 9580 

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

Borghoff

763 
WWUS53 KMPX 281021
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
521 AM CDT Wed Jul 28 2021

MNC121-149-281031-
/O.CAN.KMPX.SV.W.0054.000000T0000Z-210728T1045Z/
Pope MN-Stevens MN-
521 AM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN POPE AND NORTHEASTERN
STEVENS COUNTIES IS CANCELLED...
                
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 has been cancelled.

LAT...LON 4576 9592 4576 9526 4541 9548 4545 9573
      4557 9597
TIME...MOT...LOC 1019Z 292DEG 42KT 4552 9554 

$$

Borghoff

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 4:13 AM CDT	Special Weather Statement	MPX	Pope, Stevens	32 min
Jul 28, 4:19 AM CDT	Special Weather Statement	MPX	Todd	26 min
Jul 28, 4:45 AM CDT	Special Weather Statement	MPX	Stearns	30 min
Jul 28, 4:46 AM CDT	Special Weather Statement	MPX	Chippewa, Pope, Stevens, Swift	44 min
Jul 28, 4:54 AM CDT	Severe Thunderstorm Warning	MPX	Stearns, Todd	36 min
Jul 28, 5:29 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Stearns	46 min
Jul 28, 6:17 AM CDT	Special Weather Statement	MPX	Meeker	28 min
Jul 28, 6:45 AM CDT	Special Weather Statement	MPX	Carver, Wright	30 min
Jul 28, 7:19 AM CDT	Special Weather Statement	MPX	Carver, Le Sueur, Nicollet	41 min
Jul 28, 11:43 AM CDT	Special Weather Statement	MPX	Chisago	32 min
Jul 28, 11:59 AM CDT	Severe Thunderstorm Warning	MPX	Chisago, Washington	31 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.