Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 46, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jun 15, 2018, 5:48 PM CDT for Trempealeau County, Wisconsin. It was in force for 42 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
- Jun 15, 2018, 5:48 PM CDT (22:48 UTC)
- Expired
- Jun 15, 2018, 6:30 PM CDT
- In force
- 42 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Trempealeau County, WI
The radar
The La Crosse radar (KARX), 42 km from the middle of the area, began a volume at 22:50 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 15, 6:05 PM CDT | TSTM WND DMG | 4 Ssw Whitehall, WI | TREES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 17 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 199 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
- 957 J/kg
- Mixed-layer CIN
- -509 J/kg
- Mixed-layer LCL
- 1427 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 290 m²/s²
- 0-3 km storm-relative helicity
- 273 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
967
WUUS53 KARX 152248
SVRARX
WIC121-152330-
/O.NEW.KARX.SV.W.0046.180615T2248Z-180615T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
548 PM CDT FRI JUN 15 2018
The National Weather Service in La Crosse has issued a
* Severe Thunderstorm Warning for...
Central Trempealeau County in west central Wisconsin...
* Until 630 PM CDT
* At 548 PM CDT, a severe thunderstorm was located over Arcadia,
moving east at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Blair around 605 PM CDT.
Other locations impacted by this severe thunderstorm include Ettrick,
Highway 95 And County D, North Creek, Peacock Hill and Beach Corners.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4429 9117 4425 9117 4425 9115 4408 9115
4409 9117 4408 9119 4409 9119 4408 9120
4423 9155 4425 9153 4434 9153
TIME...MOT...LOC 2248Z 289DEG 28KT 4425 9144
HAIL...0.88IN
WIND...60MPH
$$
Rieck3 follow-up statements
806
WWUS53 KARX 152258
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
558 PM CDT FRI JUN 15 2018
WIC121-152330-
/O.CON.KARX.SV.W.0046.000000T0000Z-180615T2330Z/
Trempealeau WI-
558 PM CDT FRI JUN 15 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR SOUTHEASTERN TREMPEALEAU COUNTY...
At 557 PM CDT, a severe thunderstorm was located 7 miles southwest of
Blair, or 7 miles east of Arcadia, moving east at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
This severe storm will be near...
Blair around 605 PM CDT.
Other locations impacted by this severe thunderstorm include Ettrick,
Highway 95 And County D, North Creek, Peacock Hill and Beach Corners.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4429 9117 4425 9117 4425 9115 4408 9115
4409 9117 4408 9119 4409 9119 4408 9120
4421 9150 4427 9147 4433 9147
TIME...MOT...LOC 2257Z 289DEG 28KT 4422 9134
HAIL...0.88IN
WIND...60MPH
$$
Rieck002
WWUS53 KARX 152310
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
610 PM CDT FRI JUN 15 2018
WIC121-152330-
/O.CON.KARX.SV.W.0046.000000T0000Z-180615T2330Z/
Trempealeau WI-
610 PM CDT FRI JUN 15 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR SOUTHEASTERN TREMPEALEAU COUNTY...
At 610 PM CDT, a severe thunderstorm was located 7 miles northwest of
North Bend, or 13 miles southeast of Whitehall, moving east at 30
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
this severe thunderstorm will remain over mainly rural areas of
southeastern Trempealeau County, including the following locations:
Ettrick, Highway 95 And County D, Peacock Hill, Beach Corners and
Frenchville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4429 9117 4425 9117 4425 9115 4408 9115
4409 9117 4408 9119 4409 9119 4408 9120
4418 9140 4425 9138 4432 9139
TIME...MOT...LOC 2310Z 289DEG 28KT 4419 9120
HAIL...0.88IN
WIND...60MPH
$$
Rieck612
WWUS53 KARX 152324
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
624 PM CDT FRI JUN 15 2018
WIC121-152334-
/O.EXP.KARX.SV.W.0046.000000T0000Z-180615T2330Z/
Trempealeau WI-
624 PM CDT FRI JUN 15 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TREMPEALEAU
COUNTY WILL EXPIRE AT 630 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.
LAT...LON 4429 9117 4425 9117 4425 9115 4408 9115
4409 9117 4408 9119 4409 9119 4408 9120
4418 9140 4425 9138 4432 9139
TIME...MOT...LOC 2324Z 289DEG 28KT 4418 9115
$$
RieckWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS La Crosse, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 15, 3:52 PM CDT, 1 hour 56 minutes earlier.
Area forecast discussion, Jun 15, 3:52 PM CDT, 1 hour 56 minutes before
Area Forecast Discussion
National Weather Service La Crosse WI
352 PM CDT Fri Jun 15 2018
.SHORT TERM...(This evening through Sunday)
Issued at 350 PM CDT Fri Jun 15 2018
At 3 PM, a mesoscale convective complex was moving through the
Twin Cities. This system was producing scattered showers and
storms across east-central, southeast, and south-central
Minnesota, and north-central Iowa. The HRRR and ARW have the best
handle on this precipitation. As the afternoon progresses, these
showers and storms will eventually build across Wabasha and Dodge
counties in southeast Minnesota and along and north of Interstate
94 in western Wisconsin late this afternoon and early evening. As
this convection builds and develops a cold pool, the HRRR pushes
it south toward Interstate 90. Considering the cap strength, this
seems a bit unrealistic, so trended the PoPs along and north of
Interstate 94. We will have to watch these storms for the
potential of an isolated severe storm. Damaging winds, hail, and
very heavy rain will be the main concerns.
As the low level jet increases the moisture transport into eastern
South Dakota, a mesoscale convective complex will develop. It will
then move northeast across southwest and central Minnesota. A few
of these storms may move through north-central Wisconsin. With
weak 2-6 km shear, any severe weather will likely be more
isolated than widespread. However, if a large enough cold pool
happens to develop, a squall line may develop with damaging winds
the main concern. Additional storms will be possible north of
Interstate 94 through the weekend.
With precipitable water values running between 1.5 and 2 inches
and warm cloud layer depths of 3.5 to 4 km through the weekend,
any storms that do develop will be capable of producing very heavy
rain.
On Saturday and Sunday afternoons, high temperatures will climb
to around 90 north of Interstate 90 and in the lower and mid 90s
across the remainder of the region. With these temperatures and
dew points around 70, afternoon and evening heat indices will
climb into the 90 to 105 degree range. Due to this, we have issued
a Heat Advisory from 1 PM Saturday through 7 PM Sunday. With
850 mb temperature anomalies around 2 standard deviations, there
may be a few record highs tied or broken. These records can be
found in the climate section below.
.LONG TERM...(Sunday night through Friday)
Issued at 350 PM CDT Fri Jun 15 2018
From Sunday night through Monday evening, a cold front will move
slowly southeast through the Upper Mississippi River Valley. Ahead
of this front ML CAPES will climb into the 1500 to 3000 J/kg.
However, the 0-3 and 0-6 km shear remains weak, so any severe
weather does happen to develop will be isolated in nature.
With precipitable water values running between 1.5 and 2 inches
and warm cloud layer depths of 3.5 to 4 km through the weekend,
any storms that do develop will be capable of producing very heavy
rain.
&&
.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
Issued at 1237 PM CDT Fri Jun 15 2018
Currently watching some showers and storms across southwest and
south central Minnesota. This activity is associated with a MCV.
Many of the CAM models have this activity dissipating as at it
approaches our area. However, the 15.16z HRRR does move this
convection along and north of Interstate 90 this afternoon and
evening. This is due to the lift and precipitation associated with
this system cooling the cap. With 700 mb temperatures running
around 13C, confidence was not high enough to include them in the
TAFs at this time. We will continue to watch this activity and
update the TAFS as needed.
&&
.CLIMATE...
Issued at 350 PM CDT Fri Jun 15 2018
Here are some record highs for Saturday...
Austin MN 93F in 1987
Charles City IA 96F in 1933
Cresco IA 92F in 1946
Decorah IA 97F in 1910
La Crosse WI 94F in 1994
Mauston WI 92F in 2007
Medford WI 94F in 1898
Neillsville WI 94F in 1907
Prairie du Chien WI 96F in 1987
Rochester MN 99F in 1913
Sparta WI 95F in 1918
Winona MN 94F in 1987
Here are some record highs for Sunday...
Austin MN 93F in 1995
Charles City IA 95F in 1913
Cresco IA 92F in 1940
Decorah IA 98F in 1910
La Crosse WI 95F in 1995
Mauston WI 93F in 1918
Medford WI 93F in 1907
Neillsville WI 95F in 1910
Prairie du Chien WI 96F in 1987
Rochester MN 94F in 1933
Sparta WI 93F in 1934
Winona MN 97F in 1933
&&
.ARX WATCHES/WARNINGS/ADVISORIES...
WI...Heat Advisory from 1 PM Saturday to 7 PM CDT Sunday for
WIZ032>034-041>044-053>055-061.
MN...Heat Advisory from 1 PM Saturday to 7 PM CDT Sunday for MNZ079-
086>088-094>096.
IA...Heat Advisory from 1 PM Saturday to 7 PM CDT Sunday for
IAZ008>011-018-019-029-030.
&&
SHORT TERM...Boyne
LONG TERM...Boyne
AVIATION...Boyne
CLIMATE...BoyneHazardous weather outlook, Jun 15, 2:34 PM CDT, 3 hours 14 minutes before
Hazardous Weather Outlook National Weather Service La Crosse WI 234 PM CDT Fri Jun 15 2018 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032>034- 041>044-053>055-061-161000- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams-Vernon- Crawford-Richland-Grant- 234 PM CDT Fri Jun 15 2018 This Hazardous Weather Outlook is for portions of southeast Minnesota...northeast Iowa and southwest into central Wisconsin. .DAY ONE...This Afternoon and Tonight Thunderstorms are possible into the evening, mainly north of Interstate 90. A few storms could be strong to severe with large hail, damaging winds, and heavy rainfall. Heat indices of 90 to 100 this afternoon. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Heat Advisory Saturday afternoon into Sunday evening. Heat indices of 95 to 105 degrees during the afternoon hours Saturday and Sunday. Periodic thunderstorm chances through the weekend, mainly north of Interstate 90. Heavy rain is likely with the storms, with the potential for large hail and damaging winds. There are additional storm chances Monday and Tuesday. .SPOTTER INFORMATION STATEMENT... A few spotter groups may be needed at times this weekend. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. WIZ017-029-161000- Taylor-Clark- 234 PM CDT Fri Jun 15 2018 This Hazardous Weather Outlook is for portions of north central Wisconsin. DAY ONE...This Afternoon and Tonight Thunderstorms are possible into the evening. A few storms could be strong to severe with large hail, damaging winds, and heavy rainfall. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Heat indices of 90 to 100 degrees for the afternoon hours Saturday and Sunday. Periodic thunderstorm chances will continue Saturday through Tuesday. The weekend storms will produce heavy rain, with the potential for large hail and damaging winds. .SPOTTER INFORMATION STATEMENT... A few spotter groups may be needed at times this weekend. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. Rieck
In the hours before
Local storm report, Jun 15, 5:11 PM CDT, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
511 PM CDT FRI JUN 15 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0458 PM HAIL 3 ESE DOUGLAS 44.09N 92.51W
06/15/2018 M0.75 INCH OLMSTED MN BROADCAST MEDIA
&&
CASpecial weather statement, Jun 15, 5:23 PM CDT, 25 minutes before
Special Weather Statement National Weather Service La Crosse WI 523 PM CDT Fri Jun 15 2018 MNZ079-086>088-WIZ017-029-032>034-160000- Wabasha-Dodge-Olmsted-Winona-Taylor-Clark-Buffalo-Trempealeau- Jackson- Including the cities of Wabasha, Dodge Center, Rochester, Winona, Medford, Neillsville, Alma, Arcadia, Whitehall, and Black River Falls 523 PM CDT Fri Jun 15 2018 ...Thunderstorms...A Few Strong Early This Evening... Thunderstorms will track eastward across the area through 7 pm. Frequent lightning and brief downpours will accompany the storms. The stronger storms could produce hail from 1/2 to 3/4 inch. When storms approach, seek shelter indoors. Rieck
Local storm report, Jun 15, 5:34 PM CDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
534 PM CDT FRI JUN 15 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 PM HAIL 4 E DOUGLAS 44.10N 92.49W
06/15/2018 E0.88 INCH OLMSTED MN PUBLIC
RELAYED VIA BROADCAST MEDIA.
&&
CAThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 3:28 AM CDT | Special Weather Statement | ARX | Wood | 17 min |
| Jun 15, 3:39 AM CDT | Severe Thunderstorm Warning | ARX | Juneau | 51 min |
| Jun 15, 4:20 AM CDT | Special Weather Statement | ARX | Clark, Taylor | 25 min |
| Jun 15, 5:38 AM CDT | Severe Thunderstorm Warning | ARX | Clark | 52 min |
| Jun 15, 5:54 AM CDT | Areal Flood Advisory | ARX | Adams, Juneau | 104 min |
| Jun 15, 2:10 PM CDT | Heat Advisory | ARX | Adams, Buffalo, Crawford, Grant, Jackson, Juneau and 5 more | 53 hr |
| Jun 15, 6:09 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Monroe | 51 min |
| Jun 15, 6:54 PM CDT | Special Weather Statement | ARX | Jackson | 81 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2018Every severe thunderstorm warning in 2018
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.