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 May 15, 2021, 3:48 PM CDT for Polk County, Wisconsin. It was in force for 27 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
- May 15, 2021, 3:48 PM CDT (20:48 UTC)
- Expired
- May 15, 2021, 4:15 PM CDT
- In force
- 27 min
- Issued by
- NWS Twin Cities, MN
County Polk County, WI
The radar
The Minneapolis radar (KMPX), 106 km from the middle of the area, began a volume at 20:47 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 |
|---|---|---|---|
| May 15, 4:19 PM CDT | HAIL 1 | 4 Nw Amery, 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, 8.8 hours before the alert went out and 109 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
- 894 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
557
WWUS83 KMPX 152048
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
348 PM CDT Sat May 15 2021
WIZ014-152115-
Polk-
348 PM CDT Sat May 15 2021
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN POLK COUNTY...
At 347 PM CDT, a strong thunderstorm was located near Balsam Lake, or
35 miles west of Rice Lake, moving southeast at 15 mph.
Half inch hail is possible with this storm.
Locations impacted include...
Amery, Clear Lake, Balsam Lake, Centuria, Deronda, Range and Joel.
Accumulating small hail may result in slick roads and difficult
travel.
LAT...LON 4543 9261 4550 9248 4538 9223 4526 9225
4524 9241
TIME...MOT...LOC 2047Z 311DEG 11KT 4540 9246
$$
JRBThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 7:20 PM CDT | Special Weather Statement | MPX | Yellow Medicine | 40 min |
| May 14, 7:40 PM CDT | Special Weather Statement | MPX | Yellow Medicine | 50 min |
| May 15, 4:07 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 23 min |
| May 15, 4:29 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 22 min |
| May 15, 4:50 PM CDT | Special Weather Statement | MPX | Saint Croix | 40 min |
| May 15, 5:07 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 23 min |
| May 15, 5:27 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 33 min |
| May 15, 5:44 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 46 min |
| May 15, 6:28 PM CDT | Severe Thunderstorm Warning | MPX | Pepin, Pierce | 62 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.