Alert archive / Wisconsin / Special Weather Statements in 2021
Special Weather Statement, NWS Twin Cities, MN
NWS Twin Cities, MN issued this special weather statement at Aug 5, 2021, 8:20 PM CDT for Polk County, Wisconsin. It was in force for 40 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 5, 2021, 8:20 PM CDT (01:20 UTC)
- Expired
- Aug 5, 2021, 9:00 PM CDT
- In force
- 40 min
- Issued by
- NWS Twin Cities, MN
- Hail
- 0.50 in
- Wind
- 40
County Polk County, WI
The radar
The Minneapolis radar (KMPX), 115 km from the middle of the area, began a volume at 01:24 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, 1.3 hours before the alert went out and 117 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
- 2006 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1023 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
799
WWUS83 KMPX 060120
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
820 PM CDT Thu Aug 5 2021
WIZ014-060200-
Polk WI-
820 PM CDT Thu Aug 5 2021
...A strong thunderstorm will impact portions of northern Polk County
through 900 PM CDT...
At 820 PM CDT, Doppler radar was tracking a strong thunderstorm near
Milltown, or 26 miles southeast of Pine City, moving east at 25 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.
This strong thunderstorm will be near...
Luck and Milltown around 830 PM CDT.
Frederic and Balsam Lake around 835 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4569 9221 4542 9219 4546 9268 4551 9273
4554 9272 4556 9275 4564 9274 4565 9253
4567 9252
TIME...MOT...LOC 0120Z 272DEG 21KT 4556 9258
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
$$
TDHThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 7:57 PM CDT | Special Weather Statement | MPX | Anoka | 33 min |
| Aug 5, 8:32 PM CDT | Special Weather Statement | MPX | Washington | 43 min |
| Aug 5, 8:38 PM CDT | Special Weather Statement | MPX | Dakota | 37 min |
| Aug 5, 8:47 PM CDT | Special Weather Statement | MPX | Sibley | 28 min |
| Aug 5, 9:02 PM CDT | Special Weather Statement | MPX | Chisago | 43 min |
| Aug 5, 9:38 PM CDT | Special Weather Statement | MPX | Washington | 52 min |
| Aug 5, 10:42 PM CDT | Special Weather Statement | MPX | Washington | 33 min |
| Aug 5, 11:40 PM CDT | Special Weather Statement | MPX | Pierce | 65 min |
Nearby
Special 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.