Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 33, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2021, 6:20 PM CDT for Chippewa County, Eau Claire County, Wisconsin. It was in force for 55 min. 3 reports 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 17, 2021, 6:20 PM CDT (23:20 UTC)
- Expired
- Jun 17, 2021, 7:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Chippewa County, WI, Eau Claire County, WI
The radar
The La Crosse radar (KARX), 108 km from the middle of the area, began a volume at 23:21 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 17, 6:25 PM CDT | TSTM WND DMG | 5 Ene Altoona, WI | TREES DOWN, TIME ESTIMATED VIA RADAR. |
| Jun 17, 6:30 PM CDT | TSTM WND DMG | 2 E Fall Creek, WI | TREE DOWN ON POWERLINE, TIME ESTIMATED VIA RADAR. |
| Jun 17, 6:37 PM CDT | HAIL 0.75 | 5 Ene Fall Creek, WI | HAILED FOR FIVE MINUTES. MOSTLY PEA SIZE. |
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, 11.3 hours before the alert went out and 191 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.
306
WUUS53 KMPX 172320
SVRMPX
WIC017-035-180015-
/O.NEW.KMPX.SV.W.0033.210617T2320Z-210618T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
620 PM CDT Thu Jun 17 2021
The National Weather Service in the Twin Cities has issued a
* Severe Thunderstorm Warning for...
Southeastern Chippewa County in west central Wisconsin...
Northeastern Eau Claire County in west central Wisconsin...
* Until 715 PM CDT.
* At 619 PM CDT, a severe thunderstorm was located near Fall Creek,
or 6 miles southeast of Eau Claire, moving east at 30 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 630 PM CDT.
Other locations impacted by this severe thunderstorm include Lake Eau
Claire County Park, Ludington and Seymour.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4472 9141 4489 9145 4491 9093 4488 9092
4467 9092
TIME...MOT...LOC 2319Z 275DEG 28KT 4480 9134
HAIL...1.00IN
WIND...60MPH
$$
Borghoff1 follow-up statement
931
WWUS53 KMPX 172350
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
650 PM CDT Thu Jun 17 2021
WIC017-172359-
/O.CAN.KMPX.SV.W.0033.000000T0000Z-210618T0015Z/
Chippewa WI-
650 PM CDT Thu Jun 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHIPPEWA COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4467 9092 4473 9124 4485 9121 4486 9106
4485 9092
TIME...MOT...LOC 2349Z 275DEG 28KT 4478 9100
$$
WIC035-180015-
/O.CON.KMPX.SV.W.0033.000000T0000Z-210618T0015Z/
Eau Claire WI-
650 PM CDT Thu Jun 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR NORTHEASTERN EAU CLAIRE COUNTY...
At 649 PM CDT, a severe thunderstorm was located 9 miles northeast of
Augusta, or 22 miles east of Eau Claire, moving east at 30 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
northeastern Eau Claire County, including the following locations...
Lake Eau Claire County Park and Ludington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4467 9092 4473 9124 4485 9121 4486 9106
4485 9092
TIME...MOT...LOC 2349Z 275DEG 28KT 4478 9100
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, 6:40 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 35 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.