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 5, 2021, 9:02 PM CDT for Chisago County, Minnesota; Polk County, Wisconsin. It was in force for 43 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, 9:02 PM CDT (02:02 UTC)
- Expired
- Aug 5, 2021, 9:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Twin Cities, MN
- Hail
- 0.50 in
- Wind
- 30
Counties Chisago County, MN, Polk County, WI
The radar
The Minneapolis radar (KMPX), 112 km from the middle of the area, began a volume at 02:07 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 114 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.
930
WWUS83 KMPX 060202
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
902 PM CDT Thu Aug 5 2021
MNZ053-WIZ014-015-060245-
Chisago MN-Polk WI-Barron WI-
902 PM CDT Thu Aug 5 2021
...Strong thunderstorms will impact portions of southeastern Chisago,
west central Barron and Polk Counties through 945 PM CDT...
At 902 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles west of Cumberland to near North
Branch. Movement was east at 35 mph.
HAZARD...Winds in excess of 30 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...
Lindstrom around 910 PM CDT.
Cumberland around 915 PM CDT.
Other locations in the path of these storms include Taylors Falls,
St. Croix Falls, Dresser, Centuria, Milltown and Balsam Lake.
This includes the following highways...
Interstate 35 between mile markers 134 and 146.
U.S. Highway 8 in Minnesota between mile markers 4 and 5, and
between mile markers 7 and 22.
U.S. Highway 61 between mile markers 164 and 165.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4541 9184 4533 9234 4531 9302 4548 9302
4564 9277 4564 9215
TIME...MOT...LOC 0202Z 274DEG 30KT 4554 9217 4548 9293
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 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, 9:38 PM CDT | Special Weather Statement | MPX | Washington | 52 min |
| Aug 5, 10:42 PM CDT | Special Weather Statement | MPX | Washington | 33 min |
| Aug 5, 8:20 PM CDT | Special Weather Statement | MPX | Polk | 40 min |
| Aug 5, 11:40 PM CDT | Special Weather Statement | MPX | Pierce | 65 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.