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, 9:38 PM CDT for Washington County, Minnesota; Saint Croix County, Wisconsin. It was in force for 52 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, 9:38 PM CDT (02:38 UTC)
- Expired
- Aug 5, 2021, 10:30 PM CDT
- In force
- 52 min
- Issued by
- NWS Twin Cities, MN
- Hail
- 0.50 in
- Wind
- 40
Counties Washington County, MN, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 111 km from the middle of the area, began a volume at 02:42 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, 2.6 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.
369
WWUS83 KMPX 060238
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
938 PM CDT Thu Aug 5 2021
MNZ063-WIZ014-015-023-025-060330-
Washington MN-Polk WI-Barron WI-St. Croix WI-Dunn WI-
938 PM CDT Thu Aug 5 2021
...Strong thunderstorms will impact portions of northern Washington,
northern Dunn, St. Croix, southwestern Barron and southeastern Polk
Counties through 1030 PM CDT...
At 938 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 5 miles northeast of Chetek to near Hugo.
Movement was southeast 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.
Locations impacted include...
Somerset, Lake Elmo, Bayport, Hudson, North Hudson and Roberts.
This includes the following highways...
U.S. Highway 8 in Minnesota near mile marker 1.
U.S. Highway 61 near mile marker 165.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4521 9167 4511 9167 4500 9199 4497 9293
4529 9299 4529 9280 4530 9274 4533 9270
4534 9235 4541 9183 4522 9165
TIME...MOT...LOC 0238Z 331DEG 22KT 4537 9157 4520 9289
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
$$
JRBThe 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, 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.