Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 162, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 25, 2020, 1:05 AM CDT for Chippewa County, Eau Claire County, Wisconsin. It was in force for 40 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
- Aug 25, 2020, 1:05 AM CDT (06:05 UTC)
- Expired
- Aug 25, 2020, 1:45 AM CDT
- In force
- 40 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Chippewa County, WI, Eau Claire County, WI
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 6.1 hours before the alert went out and 170 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
- 548 J/kg
- Mixed-layer CIN
- -272 J/kg
- Mixed-layer LCL
- 1781 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.8
The text
As transmitted.
170
WUUS53 KMPX 250605
SVRMPX
WIC017-035-250645-
/O.NEW.KMPX.SV.W.0162.200825T0605Z-200825T0645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
105 AM CDT Tue Aug 25 2020
The National Weather Service in the Twin Cities has issued a
* Severe Thunderstorm Warning for...
Southwestern Chippewa County in west central Wisconsin...
Northwestern Eau Claire County in west central Wisconsin...
* Until 145 AM CDT.
* At 105 AM CDT, a severe thunderstorm was located near Lake Hallie,
or near Eau Claire, moving southeast at 30 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Chippewa Falls and Lake Hallie around 115 AM CDT.
Altoona around 120 AM CDT.
Eau Claire and Lake Wissota around 125 AM CDT.
Fall Creek around 145 AM CDT.
Other locations impacted by this severe thunderstorm include Seymour.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4488 9163 4498 9154 4486 9113 4470 9129
TIME...MOT...LOC 0605Z 296DEG 25KT 4492 9155
HAIL...1.75IN
WIND...60MPH
$$3 follow-up statements
250
WWUS53 KMPX 250617
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
117 AM CDT Tue Aug 25 2020
WIC017-035-250645-
/O.CON.KMPX.SV.W.0162.000000T0000Z-200825T0645Z/
Chippewa WI-Eau Claire WI-
117 AM CDT Tue Aug 25 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR SOUTHWESTERN CHIPPEWA AND NORTHWESTERN EAU CLAIRE COUNTIES...
At 116 AM CDT, a severe thunderstorm was located over Lake Hallie, or
over Eau Claire, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Altoona around 120 AM CDT.
Lake Wissota around 125 AM CDT.
Fall Creek around 140 AM CDT.
Other locations impacted by this severe thunderstorm include Seymour.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4488 9163 4498 9154 4486 9113 4470 9129
TIME...MOT...LOC 0616Z 296DEG 25KT 4488 9145
HAIL...1.00IN
WIND...60MPH
$$986
WWUS53 KMPX 250632
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
132 AM CDT Tue Aug 25 2020
WIC017-035-250645-
/O.CON.KMPX.SV.W.0162.000000T0000Z-200825T0645Z/
Chippewa WI-Eau Claire WI-
132 AM CDT Tue Aug 25 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR SOUTHWESTERN CHIPPEWA AND NORTH CENTRAL EAU CLAIRE COUNTIES...
At 131 AM CDT, a severe thunderstorm was located near Fall Creek, or
near Eau Claire, moving southeast 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 storm will be near...
Fall Creek around 140 AM CDT.
Other locations impacted by this severe thunderstorm include Seymour
and Eau Claire Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4498 9154 4486 9113 4473 9126 4490 9161
TIME...MOT...LOC 0631Z 296DEG 25KT 4483 9131
HAIL...1.00IN
WIND...60MPH
$$990
WWUS53 KMPX 250641
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
141 AM CDT Tue Aug 25 2020
WIC017-035-250651-
/O.EXP.KMPX.SV.W.0162.000000T0000Z-200825T0645Z/
Chippewa WI-Eau Claire WI-
141 AM CDT Tue Aug 25 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHIPPEWA AND
NORTH CENTRAL EAU CLAIRE COUNTIES WILL EXPIRE AT 145 AM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
and heavy rain are still possible with this thunderstorm.
LAT...LON 4498 9154 4486 9113 4473 9126 4490 9161
TIME...MOT...LOC 0641Z 296DEG 25KT 4480 9123
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 10:55 PM CDT | Special Weather Statement | MPX | Eau Claire | 50 min |
| Aug 24, 11:11 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 49 min |
| Aug 24, 11:59 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 46 min |
| Aug 25, 12:26 AM CDT | Special Weather Statement | MPX | Dunn | 49 min |
| Aug 25, 12:32 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Dunn | 58 min |
| Aug 25, 3:07 AM CDT | Heat Advisory | MPX | Pepin, Pierce | 16 hr |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2020Every severe thunderstorm warning in 2020
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.