Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 159, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 24, 2020, 11:11 PM CDT for Eau Claire County, Wisconsin. It was in force for 49 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
- Aug 24, 2020, 11:11 PM CDT (04:11 UTC)
- Expired
- Aug 25, 2020, 12:00 AM CDT
- In force
- 49 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
County Eau Claire County, WI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 24, 11:15 PM CDT | HAIL 1 | 6 S Fall Creek, WI | PICTURE VIA FACEBOOK. |
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 00:00Z, 4.2 hours before the alert went out and 194 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.
769 WUUS53 KMPX 250411 SVRMPX WIC035-250500- /O.NEW.KMPX.SV.W.0159.200825T0411Z-200825T0500Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Twin Cities/Chanhassen MN 1111 PM CDT Mon Aug 24 2020 The National Weather Service in the Twin Cities has issued a * Severe Thunderstorm Warning for... Southeastern Eau Claire County in west central Wisconsin... * Until midnight CDT. * At 1110 PM CDT, a severe thunderstorm was located near Osseo, or 17 miles southeast of Eau Claire, moving southeast at 20 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Augusta around 1130 PM CDT. Fairchild around 1155 PM CDT. Other locations impacted by this severe thunderstorm include Foster. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4460 9136 4474 9127 4466 9092 4460 9092 TIME...MOT...LOC 0410Z 297DEG 17KT 4465 9125 HAIL...1.25IN WIND...<50MPH $$ Borghoff
2 follow-up statements
357
WWUS53 KMPX 250419
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1119 PM CDT Mon Aug 24 2020
WIC035-250500-
/O.CON.KMPX.SV.W.0159.000000T0000Z-200825T0500Z/
Eau Claire WI-
1119 PM CDT Mon Aug 24 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR SOUTHEASTERN EAU CLAIRE COUNTY...
At 1119 PM CDT, a severe thunderstorm was located near Augusta, or 20
miles southeast of Eau Claire, moving east at 25 mph.
HAZARD...Two inch hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
This severe storm will be near...
Fairchild around 1145 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.
&&
LAT...LON 4460 9131 4473 9124 4466 9092 4460 9092
TIME...MOT...LOC 0419Z 285DEG 24KT 4464 9116
HAIL...2.00IN
WIND...<50MPH
$$
Borghoff722
WWUS53 KMPX 250434
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1134 PM CDT Mon Aug 24 2020
WIC035-250500-
/O.CON.KMPX.SV.W.0159.000000T0000Z-200825T0500Z/
Eau Claire WI-
1134 PM CDT Mon Aug 24 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR SOUTHEASTERN EAU CLAIRE COUNTY...
At 1134 PM CDT, severe thunderstorms were located along a line
extending from near Price to near Augusta, moving east at 25 mph.
HAZARD...Ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
These severe storms will be near...
Fairchild around 1150 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4460 9131 4473 9124 4466 9092 4460 9092
TIME...MOT...LOC 0434Z 286DEG 23KT 4462 9108 4468 9117
HAIL...1.50IN
WIND...<50MPH
$$
BorghoffThe 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, 11:59 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, 1:05 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 40 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.