Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 86, NWS Twin Cities, MN

August 24, 20214 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 24, 2021, 5:57 AM CDT for 4 counties in Minnesota. It was in force for 33 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: Aug 24, 2021, 5:57 AM CDT (10:57 UTC)
Expired: Aug 24, 2021, 6:30 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 Anoka County, MN, Hennepin County, MN, Sherburne County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 42 km from the middle of the area, began a volume at 11:01 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 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, 11.0 hours before the alert went out and 41 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.

351 
WUUS53 KMPX 241057
SVRMPX
MNC003-053-141-171-241130-
/O.NEW.KMPX.SV.W.0086.210824T1057Z-210824T1130Z/

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

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Wright County in central Minnesota...
  Hennepin County in east central Minnesota...
  Northwestern Anoka County in east central Minnesota...
  Sherburne County in central Minnesota...

* Until 630 AM CDT.

* At 556 AM CDT, a severe thunderstorm was located near Monticello,
  or near Buffalo, moving east 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...
  Albertville around 605 AM CDT.
  Maple Grove, St. Michael, Otsego, Rogers and Corcoran around 615 
  AM CDT.

Other locations in the path of this severe thunderstorm include
Champlin, Brooklyn Park, Plymouth and Anoka.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4549 9351 4541 9351 4541 9338 4481 9338
      4481 9352 4489 9352 4490 9376 4498 9377
      4498 9426 4529 9426 4532 9422 4530 9416
      4534 9409 4550 9402
TIME...MOT...LOC 1056Z 286DEG 40KT 4525 9380 

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, 5:27 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, McLeod, Meeker, Renville, Wright	33 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, 5:59 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.