Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

August 28, 2021Dakota County, Goodhue County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 28, 2021, 8:26 PM CDT for Dakota County, Goodhue County, Minnesota. It was in force for 34 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 28, 2021, 8:26 PM CDT (01:26 UTC)
Expired: Aug 28, 2021, 9:00 PM CDT
In force: 34 min
Issued by: NWS Twin Cities, MN
Hail: 0.50 in
Wind: 40

Counties Dakota County, MN, Goodhue County, MN

The radar

The Minneapolis radar (KMPX), 58 km from the middle of the area, began a volume at 01:27 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, 1.4 hours before the alert went out and 61 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: 1990 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 977 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

As transmitted.

811 
WWUS83 KMPX 290126
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
826 PM CDT Sat Aug 28 2021
 
MNZ070-077-078-WIZ024-290200-
Dakota MN-Rice MN-Goodhue MN-Pierce WI-
826 PM CDT Sat Aug 28 2021

...Strong thunderstorms will impact portions of southeastern Dakota,
northwestern Goodhue, northeastern Rice and western Pierce Counties
through 900 PM CDT...

At 826 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles south of Rosemount to near Northfield.
Movement was northeast at 45 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Strong thunderstorms will be near...
  Hastings and Cannon Falls around 840 PM CDT.
  Prescott around 845 PM CDT.

Other locations in the path of these storms include Welch and Red
Wing.

This includes U.S. Highway 61 between mile markers 95 and 104.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
south central Minnesota.

&&

LAT...LON 4466 9313 4475 9284 4475 9281 4476 9281
      4483 9259 4439 9261 4430 9320
TIME...MOT...LOC 0126Z 242DEG 39KT 4466 9303 4442 9311 

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

$$

NDC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 7:13 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet, Rice, Sibley	32 min
Aug 28, 7:40 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	23 min
Aug 28, 7:41 PM CDT	Special Weather Statement	MPX	Blue Earth, Le Sueur, Rice, Scott	34 min
Aug 28, 8:07 PM CDT	Special Weather Statement	MPX	Rice	23 min
Aug 28, 8:17 PM CDT	Special Weather Statement	MPX	Redwood	28 min
Aug 28, 8:57 PM CDT	Special Weather Statement	MPX	Goodhue	33 min
Aug 28, 8:59 PM CDT	Special Weather Statement	MPX	Redwood	31 min
Aug 28, 9:02 PM CDT	Flash Flood Warning	MPX	Redwood	6 hr
Aug 28, 9:29 PM CDT	Special Weather Statement	MPX	Brown	31 min
Aug 28, 10:02 PM CDT	Special Weather Statement	MPX	Brown	43 min
Aug 28, 10:15 PM CDT	Tornado Warning	MPX	Brown	30 min
Aug 28, 10:52 PM CDT	Special Weather Statement	MPX	Nicollet	53 min
Aug 28, 11:28 PM CDT	Special Weather Statement	MPX	Le Sueur	47 min
Aug 29, 12:12 AM CDT	Special Weather Statement	MPX	Hennepin, Ramsey	93 min

Nearby

Special Weather Statements in Minnesota, 2021 Every special weather statement 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.