Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 84, NWS Twin Cities, MN

August 24, 20215 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 24, 2021, 5:27 AM CDT for 5 counties in Minnesota. It was in force for 33 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: Aug 24, 2021, 5:27 AM CDT (10:27 UTC)
Expired: Aug 24, 2021, 6:00 AM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kandiyohi County, MN, McLeod County, MN, Meeker County, MN, Renville County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 63 km from the middle of the area, began a volume at 10:26 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
Aug 24, 5:45 AM CDT	TSTM WND DMG	1 Wnw Hutchinson, MN	A TREE WAS PARTIALLY BLOCKING HWY 7 ON THE WEST SIDE OF HUTCHINSON.

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
Aug 24, 2:17 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 10.5 hours before the alert went out and 60 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: 501 J/kg
Mixed-layer CIN: -147 J/kg
Mixed-layer LCL: 1780 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

238 
WUUS53 KMPX 241027
SVRMPX
MNC067-085-093-129-171-241100-
/O.NEW.KMPX.SV.W.0084.210824T1027Z-210824T1100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
527 AM CDT Tue Aug 24 2021

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southwestern Wright County in central Minnesota...
  Meeker County in central Minnesota...
  McLeod County in central Minnesota...
  Northeastern Renville County in central Minnesota...
  Southeastern Kandiyohi County in central Minnesota...

* Until 600 AM CDT.

* At 526 AM CDT, a severe thunderstorm was located 6 miles southwest
  of Dassel, or 10 miles north of Hutchinson, 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.

* This severe thunderstorm will be near...
  Dassel around 530 AM CDT.
  Hutchinson around 540 AM CDT.
  Silver Lake around 545 AM CDT.

Other locations in the path of this severe thunderstorm include
Winsted and Lester Prairie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4528 9463 4509 9386 4497 9394 4497 9401
      4472 9401 4471 9462 4498 9495
TIME...MOT...LOC 1026Z 296DEG 38KT 4503 9443 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CTG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 2:55 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Le Sueur, Scott, Sibley	35 min
Aug 24, 3:16 AM CDT	Special Weather Statement	MPX	Chippewa, Douglas, Lac qui Parle, Pope, Stevens, Swift	29 min
Aug 24, 3:28 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	32 min
Aug 24, 3:32 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stevens, Swift	43 min
Aug 24, 3:48 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice	42 min
Aug 24, 3:52 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Swift, Yellow Medicine	38 min
Aug 24, 4:08 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Stearns, Stevens, Swift	52 min
Aug 24, 4:30 AM CDT	Special Weather Statement	MPX	Chippewa, Kandiyohi, Renville, Swift	45 min
Aug 24, 4:44 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MPX	Kandiyohi, McLeod, Meeker, Stearns	46 min
Aug 24, 4:48 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Renville	42 min
Aug 24, 5:05 AM CDT	Special Weather Statement	MPX	Goodhue	40 min
Aug 24, 5:29 AM CDT	Severe Thunderstorm Warning	MPX	Meeker, Sherburne, Stearns, Wright	46 min
Aug 24, 5:45 AM CDT	Special Weather Statement	MPX	Brown, Nicollet, Redwood, Renville, Sibley	30 min
Aug 24, 5:57 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Sherburne, Wright	33 min
Aug 24, 5:59 AM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Renville, Sibley	31 min
Aug 24, 6:19 AM CDT	Special Weather Statement	MPX	Carver, Le Sueur, Nicollet, Rice, Scott, Sibley	26 min
Aug 24, 6:25 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Dakota, Hennepin, Ramsey, Washington	35 min
Aug 24, 6:53 AM CDT	Special Weather Statement	MPX	Dakota, Goodhue, Le Sueur, Rice, Scott	67 min
Aug 24, 6:57 AM CDT	Special Weather Statement	MPX	Brown	33 min
Aug 24, 7:00 AM CDT	Special Weather Statement	MPX	Ramsey, Washington	30 min
Aug 24, 7:23 AM CDT	Special Weather Statement	MPX	Nicollet, Sibley	37 min
Aug 24, 7:59 AM CDT	Special Weather Statement	MPX	Le Sueur, Sibley	31 min
Aug 24, 8:01 AM CDT	Special Weather Statement	MPX	Wabasha	29 min
Aug 24, 8:04 AM CDT	Special Weather Statement	MPX	Redwood	26 min
Aug 24, 8:30 AM CDT	Special Weather Statement	MPX	Redwood	30 min
Aug 24, 8:39 AM CDT	Severe Thunderstorm Warning	MPX	McLeod, Sibley	21 min
Aug 24, 9:03 AM CDT	Special Weather Statement	MPX	Dakota	27 min
Aug 24, 9:41 AM CDT	Special Weather Statement	MPX	Brown, Nicollet, Watonwan	49 min
Aug 24, 10:23 AM CDT	Special Weather Statement	MPX	Martin	37 min
Aug 24, 10:35 AM CDT	Special Weather Statement	MPX	Blue Earth	25 min
Aug 24, 11:16 AM CDT	Special Weather Statement	MPX	Faribault, Martin	44 min
Aug 24, 12:20 PM CDT	Special Weather Statement	MPX	Freeborn	40 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.