Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 35, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2021, 6:40 PM CDT for Eau Claire County, Wisconsin. It was in force for 35 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
- Jun 17, 2021, 6:40 PM CDT (23:40 UTC)
- Expired
- Jun 17, 2021, 7:15 PM CDT
- In force
- 35 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Eau Claire County, WI
The radar
The La Crosse radar (KARX), 94 km from the middle of the area, began a volume at 23:42 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 12:00Z, 11.7 hours before the alert went out and 186 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
- 288 J/kg
- Mixed-layer CIN
- -583 J/kg
- Mixed-layer LCL
- 1902 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.0
The text
As transmitted.
571
WUUS53 KMPX 172340
SVRMPX
WIC035-180015-
/O.NEW.KMPX.SV.W.0035.210617T2340Z-210618T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
640 PM CDT Thu Jun 17 2021
The National Weather Service in the Twin Cities has issued a
* Severe Thunderstorm Warning for...
Southeastern Eau Claire County in west central Wisconsin...
* Until 715 PM CDT.
* At 640 PM CDT, a severe thunderstorm was located 8 miles southwest
of Fall Creek, or 12 miles south of Eau Claire, moving east at 55
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Fall Creek around 650 PM CDT.
Augusta around 655 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4460 9149 4474 9145 4481 9092 4460 9093
TIME...MOT...LOC 2340Z 261DEG 50KT 4468 9139
HAIL...1.00IN
WIND...60MPH
$$
CTG1 follow-up statement
671
WWUS53 KMPX 172358
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
658 PM CDT Thu Jun 17 2021
WIC035-180015-
/O.CON.KMPX.SV.W.0035.000000T0000Z-210618T0015Z/
Eau Claire WI-
658 PM CDT Thu Jun 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR SOUTHEASTERN EAU CLAIRE COUNTY...
At 658 PM CDT, a severe thunderstorm was located near Augusta, or 22
miles southeast of Eau Claire, moving east at 60 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of
southeastern Eau Claire County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4460 9129 4473 9124 4467 9093 4460 9093
TIME...MOT...LOC 2358Z 261DEG 50KT 4472 9104
HAIL...1.00IN
WIND...60MPH
$$
CTGThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 3:21 AM CDT | Special Weather Statement | MPX | Pepin | 39 min |
| Jun 17, 4:12 AM CDT | Special Weather Statement | MPX | Eau Claire | 33 min |
| Jun 17, 3:54 PM CDT | Fire Weather Watch | MPX | Barron, Polk, Rusk, Saint Croix | 11 hr |
| Jun 17, 6:18 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Eau Claire, Pepin | 27 min |
| Jun 17, 6:20 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 55 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2021Every severe thunderstorm warning 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.