Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 9, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 25, 2018, 3:36 PM CDT for Winona County, Minnesota. It was in force for 39 min. 2 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
- May 25, 2018, 3:36 PM CDT (20:36 UTC)
- Expired
- May 25, 2018, 4:15 PM CDT
- In force
- 39 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
County Winona County, MN
The radar
The La Crosse radar (KARX), 46 km from the middle of the area, began a volume at 20:37 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 |
|---|---|---|---|
| May 25, 3:36 PM CDT | HAIL 1 | Lewiston, MN | |
| May 25, 3:39 PM CDT | HAIL 0.75 | Lewiston, MN |
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 0 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 25, 2:02 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.6 hours before the alert went out and 177 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
- 543 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 1022 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 245 m²/s²
- 0-3 km storm-relative helicity
- 234 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted.
048
WUUS53 KARX 252036
SVRARX
MNC169-252115-
/O.NEW.KARX.SV.W.0009.180525T2036Z-180525T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
336 PM CDT FRI MAY 25 2018
The National Weather Service in La Crosse has issued a
* Severe Thunderstorm Warning for...
Southwestern Winona County in southeastern Minnesota...
* Until 415 PM CDT
* At 336 PM CDT, a severe thunderstorm was located near Lewiston, or
9 miles southwest of Winona, moving east at 15 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will be near...
Stockton around 340 PM CDT.
Goodview around 355 PM CDT.
Winona around 400 PM CDT.
Other locations impacted by this severe thunderstorm include Wilson,
Witoka, I 90 Exit 252, Wyattville and I 90 Exit 257.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4403 9194 4408 9166 4403 9159 4403 9156
4385 9147 4390 9188
TIME...MOT...LOC 2036Z 264DEG 12KT 4397 9180
HAIL...1.25IN
WIND...<50MPH
$$
DAS2 follow-up statements
640
WWUS53 KARX 252038
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
338 PM CDT FRI MAY 25 2018
MNC169-252115-
/O.CON.KARX.SV.W.0009.000000T0000Z-180525T2115Z/
Winona MN-
338 PM CDT FRI MAY 25 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR SOUTHWESTERN WINONA COUNTY...
At 338 PM CDT, a severe thunderstorm was located near Lewiston, or 8
miles southwest of Winona, moving east at 15 mph.
HAZARD...Quarter size hail.
SOURCE...Law enforcement.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Winona and Goodview around 355 PM CDT.
Other locations impacted by this severe thunderstorm include Wilson,
Witoka, I 90 Exit 252, Wyattville and I 90 Exit 257.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4403 9194 4408 9166 4403 9159 4403 9156
4385 9147 4390 9188
TIME...MOT...LOC 2038Z 264DEG 12KT 4397 9179
HAIL...1.00IN
WIND...<50MPH
$$
DAS782
WWUS53 KARX 252102
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
402 PM CDT FRI MAY 25 2018
MNC169-252115-
/O.CON.KARX.SV.W.0009.000000T0000Z-180525T2115Z/
Winona MN-
402 PM CDT FRI MAY 25 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR SOUTH CENTRAL WINONA COUNTY...
At 402 PM CDT, a severe thunderstorm was located 7 miles southeast of
Stockton, or 8 miles south of Winona, moving east at 15 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
this severe thunderstorm will remain over mainly rural areas of south
central Winona County, including the following locations: Wilson,
Witoka, I 90 Exit 252, Wyattville and I 90 Exit 257.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4394 9186 4399 9166 4399 9154 4385 9147
4390 9188
TIME...MOT...LOC 2102Z 288DEG 12KT 4393 9169
HAIL...1.00IN
WIND...<50MPH
$$
DASWhat 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 May 25, 1:32 PM CDT, 2 hours 4 minutes earlier.
Area forecast discussion, May 25, 1:32 PM CDT, 2 hours 4 minutes before
Area Forecast Discussion
National Weather Service La Crosse WI
132 PM CDT Fri May 25 2018
.SHORT TERM...(Tonight through Saturday Night)
Issued at 132 PM CDT Fri May 25 2018
GOES-East water vapor imagery showing a mid-level trough moving east
through the Northern Plains into MN. Impressive plume of moisture
streaming into our area which is translating to a very warm/humid
airmass over the region. A few showers and storms were firing from
time to time in a line from north central WI into southeast MN in
this plume and in advance of this trough. Temperatures as of 2 pm
were in the 70s to middle 80s with dew points in the 60s.
Still a chance for a few strong storms later this afternoon into
this evening as the trough continues to push into/through our area.
Wind gusts to 40 mph, heavy downpours, and frequent lightning would
be the main threats along with some small hail. Look for the bulk of
this activity to exit south of the area around midnight. Could still
see a few pop-up showers overnight as a weak secondary mid-level
trough drops through the region. Overnight lows will be in the upper
50s to the middle 60s.
A few showers/storms will be possible over northern WI Saturday as
another weak trough rotates east through that area. Otherwise, look
very warm highs in the upper 80s to the lower 90s.
.LONG TERM...(Sunday through Friday)
Issued at 132 PM CDT Fri May 25 2018
The heat continues for Sunday into Memorial Day as a mid-level ridge
of high pressure amplifies across the region. 850mb temperatures
Sunday increase to near +20C while 925mb heats up into the +27 to
+30C range. This is expected to produce highs well into the 90s for
most places, nearing or exceeding record levels. See climate section
below. Memorial Day may end up a few degrees cooler as clouds will
be on the increase from convection over the Plains. Could also see a
few showers/storms rounding top of the ridge into our area as well.
Shower and thunderstorm chances will be on the increase Tuesday into
Wednesday as a mid-level trough nudges in from the Plains. Highs
will continue to be well above normal with readings well into the
80s.
Small-end shower/thunder chances continue Thursday into Friday as a
couple very weak troughs ripple over the mean ridge, Otherwise,
temperatures will continue to stay well above normal with highs in
the 80s.
&&
.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
Issued at 1235 PM CDT Fri May 25 2018
VFR conditions out there and should mostly remain the next 24 hours,
but we'll be watching a broken line of showers and thunderstorms
developing west of RST the next few hours. That line should then
gradually progress eastward into early evening, though remaining
questions about how widespread activity will become precludes any
specific timing mention for either LSE or RST (will have to watch
radar trends the next hour or two). Suffice it to say that a brief
period of MVFR or even IFR conditions is possible for either
location if a heavier storm crosses the terminal site, with some
gusty winds to 40 knots and small hail also possible in stronger
storms. In the wake of that activity, which should depart by 01Z for
LSE (earlier at RST), clearing skies are expected overnight, with
lots of sunshine into Saturday along with very warm temperatures and
light southerly winds.
&&
.CLIMATE...
Issued at 132 PM CDT Fri May 25 2018
High temperatures over the next few days will be in near or record
breaking territory. Here are the standing record highs and years
occurred for La Crosse and Rochester:
Rochester La Crosse
May 26 91 (1939) 94 (1967)
May 27 93 (1914) 96 (1874)
May 28 95 (2006) 95 (1874)
&&
.ARX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
IA...None.
&&
SHORT TERM...DAS
LONG TERM...DAS
AVIATION...LawrenceHazardous weather outlook, May 25, 5:15 AM CDT, 10 hours 21 minutes before
Hazardous Weather Outlook National Weather Service La Crosse WI 515 AM CDT Fri May 25 2018 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029- 032>034-041>044-053>055-061-261100- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau- Adams-Vernon-Crawford-Richland-Grant- 515 AM CDT Fri May 25 2018 This Hazardous Weather Outlook is for portions of southeast Minnesota...northeast Iowa and southwest into central Wisconsin. .DAY ONE...Today and Tonight Thunderstorms are expected across the area this afternoon and evening. Some of storms could become severe with damaging winds, small hail and locally heavy rains the main threats between 3 and 10 pm. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Afternoon heat indices in the 90s are expected for the Memorial Day weekend with Sunday the warmest day. There will be small chance of thunderstorms Saturday afternoon north of Interstate 94. Severe weather is not expected. Periodic chances for thunderstorms will return Tuesday and continue through Thursday. It is too early to determine if there is a chance for any severe weather. .SPOTTER INFORMATION STATEMENT... A few spotter groups may be needed this afternoon and evening. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. 04/Baumgardt
In the hours before
Special weather statement, May 25, 2:31 PM CDT, 1 hour 5 minutes before
Special Weather Statement
National Weather Service La Crosse WI
231 PM CDT FRI MAY 25 2018
MNZ087-088-252015-
Olmsted-Winona-
231 PM CDT FRI MAY 25 2018
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN WINONA AND EAST
CENTRAL OLMSTED COUNTIES...
At 231 PM CDT, a strong thunderstorm was located 7 miles north of St.
Charles, or 19 miles east of Rochester, moving northeast at 15 mph.
Winds in excess of 30 mph and pea size hail are possible with this
storm.
Locations impacted include...
St. Charles, Altura, Elba, Minneiska, Beaver, Whitewater State Park,
County Roads 9 And 10, Carley State Park, Whitman, County Roads 28
And 31, Little Valley and Lazy D Campground.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.
LAT...LON 4411 9222 4411 9208 4419 9208 4419 9186
4418 9183 4416 9182 4415 9177 4395 9206
4406 9226
TIME...MOT...LOC 1931Z 218DEG 13KT 4407 9209
DASSpecial weather statement, May 25, 2:47 PM CDT, 49 minutes before
Special Weather Statement National Weather Service La Crosse WI 247 PM CDT FRI MAY 25 2018 MNZ079-WIZ032-033-252015- Wabasha-Buffalo-Trempealeau- 247 PM CDT FRI MAY 25 2018 ...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL WABASHA...CENTRAL BUFFALO AND NORTHWESTERN TREMPEALEAU COUNTIES... At 246 PM CDT, a strong thunderstorm was located 7 miles east of Alma, moving east at 20 mph. Winds in excess of 40 mph and nickel size hail are possible with this storm. Locations impacted include... Arcadia, Wabasha, Alma, Independence, Buffalo City, Kellogg, Waumandee, West Newton, Nelson, Montana, Pioneer Campground, Cream, Tell and Praag. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. LAT...LON 4424 9203 4441 9201 4449 9143 4424 9141 TIME...MOT...LOC 1946Z 267DEG 19KT 4435 9178 Lawrence
Local storm report, May 25, 2:57 PM CDT, 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
257 PM CDT FRI MAY 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0254 PM HAIL SAINT CHARLES 43.97N 92.06W
05/25/2018 E0.75 INCH WINONA MN LAW ENFORCEMENT
&&
LAWRENCESpecial weather statement, May 25, 3:25 PM CDT, 11 minutes before
Special Weather Statement
National Weather Service La Crosse WI
325 PM CDT FRI MAY 25 2018
MNZ088-252100-
Winona-
325 PM CDT FRI MAY 25 2018
...A STRONG THUNDERSTORM WILL AFFECT WINONA COUNTY...
At 323 PM CDT, a strong thunderstorm was located over Lewiston, or 11
miles southwest of Winona, moving east at 10 mph.
Winds in excess of 30 mph and half inch hail are possible with this
storm.
Locations impacted include...
Winona, Goodview, Lewiston, Fountain City, Stockton, Altura, Dakota,
New Hartford, Wilson, Dresbach, Hart, Fremont, Utica, Minnesota
City, Wyattville, and Ridgeway.
Torrential rainfall is also occurring with this storm, and may cause
some ponding of water. Do not drive your vehicle through any flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 4404 9199 4412 9171 4410 9171 4410 9168
4407 9166 4405 9161 4403 9159 4402 9151
4401 9149 4400 9144 4397 9141 4394 9136
4392 9136 4385 9128 4385 9192
TIME...MOT...LOC 2023Z 255DEG 10KT 4397 9186
DASLocal storm report, May 25, 3:36 PM CDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
336 PM CDT FRI MAY 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0331 PM HAIL ELEVA 44.58N 91.47W
05/25/2018 E1.75 INCH TREMPEALEAU WI LAW ENFORCEMENT
&&The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 2:31 PM CDT | Special Weather Statement | ARX | Winona | 44 min |
| May 25, 2:40 PM CDT | Severe Thunderstorm Warning | ARX | Olmsted, Winona | 20 min |
| May 25, 3:25 PM CDT | Special Weather Statement | ARX | Winona | 35 min |
| May 25, 4:11 PM CDT | Special Weather Statement | ARX | Mower | 34 min |
| May 25, 4:12 PM CDT | Severe Thunderstorm Warning | ARX | Winona | 18 min |
| May 25, 4:21 PM CDT | Special Weather Statement | ARX | Houston, Winona | 24 min |
| May 25, 4:43 PM CDT | Special Weather Statement | ARX | Mower | 32 min |
| May 25, 4:59 PM CDT | Special Weather Statement | ARX | Houston | 31 min |
| May 25, 5:27 PM CDT | Severe Thunderstorm Warning | ARX | Houston | 48 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.