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 Jul 24, 2021, 2:32 AM CDT for 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
- Jul 24, 2021, 2:32 AM CDT (07:32 UTC)
- Expired
- Jul 24, 2021, 3:15 AM CDT
- In force
- 43 min
- Issued by
- NWS Twin Cities, MN
County Polk County, WI
The radar
The Minneapolis radar (KMPX), 104 km from the middle of the area, began a volume at 07:35 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, 7.5 hours before the alert went out and 107 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
- 2540 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1098 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.4
The text
As transmitted.
881
WWUS83 KMPX 240732
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
232 AM CDT Sat Jul 24 2021
WIZ014-015-023-240815-
Polk-Barron-St. Croix-
232 AM CDT Sat Jul 24 2021
...A LINE OF STORMS WILL AFFECT NORTH CENTRAL ST. CROIX...SOUTHERN
BARRON AND SOUTHEASTERN POLK COUNTIES...
At 232 AM CDT, radar indicated strong thunderstorms were located
along a line extending from Osceola to Clear Lake. Movement was east
at 40 mph.
Winds in excess of 40 mph are possible with these storms.
Locations impacted include...
Barron, Amery, Osceola, Chetek, St. Croix Falls, Cameron, Clear Lake,
Turtle Lake, Balsam Lake, Centuria, Dresser and Almena.
LAT...LON 4515 9237 4529 9276 4533 9270 4536 9270
4557 9235 4537 9165
TIME...MOT...LOC 0732Z 253DEG 33KT 4532 9270 4524 9229
$$
TDHThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 12:03 AM CDT | Special Weather Statement | MPX | Stevens | 27 min |
| Jul 24, 12:36 AM CDT | Special Weather Statement | MPX | Swift | 24 min |
| Jul 24, 1:07 AM CDT | Special Weather Statement | MPX | Pope | 23 min |
| Jul 24, 1:09 AM CDT | Special Weather Statement | MPX | Douglas | 36 min |
| Jul 24, 1:37 AM CDT | Severe Thunderstorm Warning | MPX | Morrison, Stearns, Todd | 38 min |
| Jul 24, 1:46 AM CDT | Special Weather Statement | MPX | Anoka | 44 min |
| Jul 24, 1:50 AM CDT | Special Weather Statement | MPX | Douglas, Todd | 40 min |
| Jul 24, 2:03 AM CDT | Severe Thunderstorm Warning | MPX | Chisago, Washington | 25 min |
| Jul 24, 2:16 AM CDT | Special Weather Statement | MPX | Benton, Mille Lacs | 44 min |
| Jul 24, 2:19 AM CDT | Special Weather Statement | MPX | Morrison | 26 min |
| Jul 24, 2:27 AM CDT | Special Weather Statement | MPX | Chisago, Isanti | 33 min |
| Jul 24, 3:06 AM CDT | Special Weather Statement | MPX | Kanabec | 24 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.