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 Jun 20, 2021, 5:53 PM CDT for Dunn County, Wisconsin. It was in force for 52 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 20, 2021, 5:53 PM CDT (22:53 UTC)
- Expired
- Jun 20, 2021, 6:45 PM CDT
- In force
- 52 min
- Issued by
- NWS Twin Cities, MN
County Dunn County, WI
The radar
The La Crosse radar (KARX), 126 km from the middle of the area, began a volume at 22:57 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 20, 6:07 PM CDT | HAIL 0.7 | 3 N Knapp, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.9 hours before the alert went out and 135 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1666 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
601
WWUS83 KMPX 202253
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
553 PM CDT Sun Jun 20 2021
WIZ023>025-202345-
Pierce-St. Croix-Dunn-
553 PM CDT Sun Jun 20 2021
...A LINE OF STORMS WILL AFFECT NORTHEASTERN PIERCE...DUNN AND
SOUTHEASTERN ST. CROIX COUNTIES...
At 552 PM CDT, radar indicated strong thunderstorms were located
along a line extending from near Glenwood City to near Woodville to 6
miles northeast of Ellsworth. Movement was east at 30 mph.
Winds in excess of 40 mph are possible with these storms.
These storms will be near...
Boyceville and Knapp around 605 PM CDT.
Elmwood around 615 PM CDT.
Wheeler around 620 PM CDT.
Menomonie around 625 PM CDT.
Eau Galle around 630 PM CDT.
Colfax around 640 PM CDT.
Elk Mound around 645 PM CDT.
Other locations impacted by these storms include Cedar Falls,
Downing, Hersey, Downsville, Weston, Tainter Lake, Menomonie Airport,
Wilson and Hoffman Hills Rec Area.
Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4475 9175 4468 9184 4468 9197 4480 9240
4508 9212 4510 9165 4486 9165
TIME...MOT...LOC 2252Z 281DEG 27KT 4503 9220 4488 9229 4480 9238
$$
BorghoffThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 2:49 PM CDT | Special Weather Statement | MPX | Steele | 41 min |
| Jun 20, 3:34 PM CDT | Special Weather Statement | MPX | Freeborn | 26 min |
| Jun 20, 5:09 PM CDT | Special Weather Statement | MPX | Dakota | 51 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.