Alert archive / Minnesota / Special Weather Statements in 2021
Special Weather Statement, NWS Twin Cities, MN
NWS Twin Cities, MN issued this special weather statement at Aug 28, 2021, 8:57 PM CDT for Goodhue County, Minnesota; Pierce County, Wisconsin. 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 28, 2021, 8:57 PM CDT (01:57 UTC)
- Expired
- Aug 28, 2021, 9:30 PM CDT
- In force
- 33 min
- Issued by
- NWS Twin Cities, MN
- Hail
- 0.75 in
- Wind
- 40
Counties Goodhue County, MN, Pierce County, WI
The radar
The Minneapolis radar (KMPX), 76 km from the middle of the area, began a volume at 01:57 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, 2.0 hours before the alert went out and 78 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.
- 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
The text
As transmitted.
834
WWUS83 KMPX 290157
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
857 PM CDT Sat Aug 28 2021
MNZ078-WIZ023-024-290230-
Goodhue MN-Pierce WI-St. Croix WI-
857 PM CDT Sat Aug 28 2021
...Strong thunderstorms will impact portions of northeastern Goodhue,
central Pierce and south central St. Croix Counties through 930 PM
CDT...
At 857 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles south of River Falls to 5 miles north
of Goodhue. Movement was east at 25 mph.
HAZARD...Winds in excess of 40 mph and penny size 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...
Red Wing around 910 PM CDT.
Ellsworth around 915 PM CDT.
Other locations in the path of these storms include Bay City.
This includes U.S. Highway 61 between mile markers 82 and 103.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4439 9274 4463 9276 4463 9273 4471 9273
4474 9277 4478 9277 4492 9235 4451 9234
TIME...MOT...LOC 0157Z 250DEG 21KT 4476 9264 4448 9264
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
$$
NDCThe 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, 8:26 PM CDT | Special Weather Statement | MPX | Dakota, Goodhue | 34 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, 2021Special Weather Statements in Wisconsin, 2021Every 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.