Alert archive / Minnesota / Flash Flood Warnings in 2026
Flash Flood Warning 3, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Jul 1, 2026, 9:19 AM CDT for Winona County, Minnesota. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2026, 9:19 AM CDT (14:19 UTC)
- Expired
- Jul 1, 2026, 11:40 AM CDT
- In force
- 2 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
County Winona County, MN
The radar
The La Crosse radar (KARX), 45 km from the middle of the area, began a volume at 14:24 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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 text
As transmitted.
024
WGUS53 KARX 011419
FFWARX
MNC169-011715-
/O.NEW.KARX.FF.W.0003.260701T1419Z-260701T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
919 AM CDT Wed Jul 1 2026
The National Weather Service in La Crosse has issued a
* Flash Flood Warning for...
Winona County in southeastern Minnesota...
* Until 1215 PM CDT.
* At 919 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3.5 inches of rain
have fallen. Additional rainfall amounts up to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Winona, Goodview, St. Charles, Lewiston, Stockton, Rollingstone,
Altura, Wilson, Utica, Minnesota City, Elba, Wyattville, Bethany,
Lock And Dam 5 A, Whitman, Lock And Dam 5, County Roads 28 And 31,
Witoka and Pickwick.
This includes Interstate 90 in Minnesota between mile markers 233 and
269.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4389 9144 4389 9158 4393 9208 4410 9208
4419 9185 4416 9181 4413 9172 4410 9171
4410 9168 4403 9159 4400 9144 4395 9138
FLASH FLOOD...RADAR INDICATED
$$
APF1 follow-up statement
250
WGUS73 KARX 011640
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
1140 AM CDT Wed Jul 1 2026
MNC169-011650-
/O.CAN.KARX.FF.W.0003.000000T0000Z-260701T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winona MN-
1140 AM CDT Wed Jul 1 2026
...FLASH FLOOD WARNING IS CANCELLED FOR WINONA COUNTY...
The heavy rain has ended. Please continue to heed remaining road
closures.
&&
LAT...LON 4389 9144 4389 9158 4393 9208 4410 9208
4419 9185 4416 9181 4413 9172 4410 9171
4410 9168 4403 9159 4400 9144 4395 9138
$$
APFWhat forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Jul 1, 7:07 AM CDT, 2 hours 12 minutes earlier. Its key messages:
- Several rounds of severe storms for the remainder of the week, bringing the risk for mainly damaging winds and heavy rain. The main time periods for severe weather in the next 24 hours are early this morning and again later this afternoon and evening.
- Warm and muggy conditions persist for the remainder of the week, but heat indices will be slightly cooler than the start of the week and shifting to the south.
- More seasonable temperatures for the holiday weekend, though shower/storm chances exist (40-60%).
Area forecast discussion, Jul 1, 7:07 AM CDT, 2 hours 12 minutes before
Area Forecast Discussion
National Weather Service La Crosse WI
707 AM CDT Wed Jul 1 2026
.KEY MESSAGES...
- Several rounds of severe storms for the remainder of the week,
bringing the risk for mainly damaging winds and heavy rain.
The main time periods for severe weather in the next 24 hours
are early this morning and again later this afternoon and
evening.
- Warm and muggy conditions persist for the remainder of the
week, but heat indices will be slightly cooler than the start
of the week and shifting to the south.
- More seasonable temperatures for the holiday weekend, though
shower/storm chances exist (40-60%).
&&
.DISCUSSION...
Issued at 1200 AM CDT Wed Jul 1 2026
Early this Morning: First Round of Storms
Another convective complex is progged to develop on the nose of
a 30-40 kt LLJ in northern Iowa after 06-09Z and translate NE
through the morning hours. Damaging winds will be the main
concern with these storms quickly becoming outflow dominant and
not last too long given the compact/complex hodographs but ample
MUCAPE values of 1500-2000 J/kg. The recent CAMs are all
depicting this feature in some way shape and form with the
explicit gusts from the HRRR hitting 50-60 kts in small pockets
from south-central MN into west-central WI. The other area of
focus with these morning storms is if/where they lay out an
outflow boundary that could modulate the threats and area of
concern for storms later in the day.
This Afternoon/Evening: Round 2 of Severe Storms
Confidence is increasing that the morning convection will lay
out a differential heating boundary from south-central Minnesota
into west-central Wisconsin, but the devil is in the details as
to its strength and position, which will feed into the behavior
of storms later in the afternoon. The 01.00Z HREF guidance is
targeting this boundary for convective initiation around 19-21Z,
though in what form remains less certain. The ARW/NMM cores
have the length of the line initiating in unison and growing
upscale, while the HRRR holds the cap longer and rides more
discrete convection along the boundary--a scenario that would
increase the tornado and hail risk. This aspect of the forecast
remains fluid and likely will remain as such until the midday
hours when we can better assess the environment behind the
morning convection.
No matter how storms form, they will be feeding on a favorable
thermodynamic and kinematic profile with MLCAPE values of
2000-2500 J/kg and somewhat elongated hodographs that would
support organized cell structures. Upscale growth into a bowing
line segment is anticipated, but timing of this transition
remains less certain. The tornado threat looks to continue with
this upscale transition if bowing line segments can reorient
themselves with the 0-3-km shear vector, though we'll have to
see if there is localized backing of the 0-1-km wind field to
further enhance this tornado threat.
In addition to damaging winds--which are the main threat with
the afternoon convection--concerns are increasing about the
possibility for multiple rounds of heavy rainfall in the evening
and overnight. Boundary-parallel mid-level flow coupled with
continued theta-e advection into the initiating front could
result in training cells bringing pockets of 3-6 inches of rain
in short order. In fact, all of the 01.00Z HREF guidance members
have this corridor of higher QPF, but differ in 150 miles on
its location between I-90 in southern Minnesota and I-80 in
central Iowa. Thankfully, antecedent conditions are dry and we
are entering a prime time in which cropland can better absorb
such rains, but obviously such rains in urban locales and
steeper topography could result in flooding.
Thursday - Friday: Severe Storm Risk Continues
The hits keep coming for Thursday and Friday with the lower
tropospheric baroclinic zone wobbling across the region during
this time, but more or less staying across the forecast area.
This will serve as the focus for convective initiation as we go
later in the week, but like a game of dominoes, one small
deviation in storms earlier in the forecast can totally turn the
forecast on its head in a hurry. One thing to watch for
Thursday is how long storms later tonight persist, with a longer
residence time towards morning possibly delaying or shifting
the severe weather threat in the afternoon. Friday faces even
more uncertainty in the timing and hazards with the convection,
but the ingredients are all there, it is just a matter of how
they are mixed.
Holiday Weekend- Early Next Week: Seasonable Temperatures With
Additional Shower/Storm Potential
As the upper level pattern becomes more zonal as we head into
the holiday weekend, several shortwave impulses are depicted to
traverse the mean flow by the deterministic global models. These
waves should result a reprieve from this week's heat as they
usher in cooler air, slightly cooling temperatures towards the
mid 80s, more seasonable for this time of year. Outside of the
more seasonable temperatures, there is the potential for showers
and storms throughout the weekend (40-60%), though these may
shift more to the south depending on how Thursday and Friday's
storms unfold.
&&
.AVIATION /12Z TAFS THROUGH 12Z THURSDAY/...
Issued at 705 AM CDT Wed Jul 1 2026
There will be several rounds of storms through tonight. Like the
01/06z TAFS used the CAMS to try add some timing to them. The
first round will be likely continue through 01/15z. Then there
will likely be scattered supercells this afternoon followed by
widespread convection for late this afternoon and evening.
&&
.CLIMATE...
Issued at 127 AM CDT Wed Jul 1 2026
On June 30, the low temperature at La Crosse Regional Airport was
81F. This surpassed the previous warm low temperature record for
the date of 78F in 1931.
This low temperature was the warmest June low temperature. The
previous record was 80F on June 29, 1931 and June 22, 2025.
It also tied the warmest low temperature ever recorded in La Crosse.
An 81F low temperature has occurred 4 times (July 21, 1901; July
13, 1995; July 4, 2012; and June 30, 2026).
&&
.ARX WATCHES/WARNINGS/ADVISORIES...
WI...Heat Advisory from 1 PM this afternoon to 8 PM CDT this
evening for WIZ041>044-053>055-061.
MN...Heat Advisory from 1 PM this afternoon to 8 PM CDT this
evening for MNZ096.
IA...Heat Advisory from 1 PM this afternoon to 8 PM CDT this
evening for IAZ008>011-018-019-029-030.
&&
DISCUSSION...Falkinham/Skow
AVIATION...Boyne
CLIMATE...BoyneHazardous weather outlook, Jul 1, 2:46 AM CDT, 6 hours 33 minutes before
Hazardous Weather Outlook National Weather Service La Crosse WI 246 AM CDT Wed Jul 1 2026 IAZ008>011-018-019-029-030-MNZ096-WIZ041>044-053>055-061-021100- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Houston-La Crosse-Monroe-Juneau-Adams-Vernon-Crawford- Richland-Grant- 246 AM CDT Wed Jul 1 2026 This Hazardous Weather Outlook is for portions of north central Iowa...northeast Iowa...southeast Minnesota...central Wisconsin... southwest Wisconsin and west central Wisconsin. .DAY ONE...Today and Tonight ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT THIS EVENING... Periodic thunderstorms are expected through tonight. Some of these storms will become severe. Damaging winds will be the main threat with these storms, along with large hail and possibly a few tornadoes. Heat index values of 95 to 105 degrees this afternoon and evening. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday The threat for severe thunderstorms continues on Thursday and possibly into the weekend. .SPOTTER INFORMATION STATEMENT... May be needed at times through the weekend. .EMERGENCY MANAGEMENT COORDINATION... A webinar is scheduled at 1 pm this afternoon for the severe weather threat in the afternoon. MNZ079-086>088-094-095-WIZ017-029-032>034-021100- Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Taylor-Clark-Buffalo- Trempealeau-Jackson- 246 AM CDT Wed Jul 1 2026 This Hazardous Weather Outlook is for portions of southeast Minnesota...central Wisconsin...north central Wisconsin and west central Wisconsin. .DAY ONE...Today and Tonight Periodic thunderstorms are expected through tonight. Some of these storms will become severe. Damaging winds will be the main threat with these storms, along with large hail and possibly a few tornadoes. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday The threat for severe thunderstorms continues on Thursday and possibly into the weekend. .SPOTTER INFORMATION STATEMENT... May be needed at times through the weekend. .EMERGENCY MANAGEMENT COORDINATION... A webinar is scheduled at 1 pm this afternoon for the severe weather threat in the afternoon. Boyne
In the hours before
Local storm report, Jul 1, 5:23 AM CDT, 3 hours 56 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
523 AM CDT Wed Jul 1 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0441 AM Tstm Wnd Dmg 5 NNW Readstown 43.51N 90.80W
07/01/2026 Vernon WI Law Enforcement
Tree fell onto a house. Roof started to
leaking letting water into the house.
&&
JSBLocal storm report, Jul 1, 5:25 AM CDT, 3 hours 54 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
525 AM CDT Wed Jul 1 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0444 AM Tstm Wnd Dmg 6 E Viroqua 43.56N 90.77W
07/01/2026 Vernon WI Law Enforcement
Tree fell onto a road State Highway 82 near
Brush Hollow Rd.
&&
JSBLocal storm report, Jul 1, 7:03 AM CDT, 2 hours 16 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
703 AM CDT Wed Jul 1 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0651 AM Tstm Wnd Gst 5 WSW Cummingsville 43.84N 92.35W
07/01/2026 M59 MPH Fillmore MN Trained Spotter
&&
APFLocal storm report, Jul 1, 7:04 AM CDT, 2 hours 15 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
704 AM CDT Wed Jul 1 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0651 AM Hail 5 WSW Cummingsville 43.84N 92.35W
07/01/2026 E0.70 Inch Fillmore MN Trained Spotter
&&
APFSpecial weather statement, Jul 1, 8:21 AM CDT, 58 minutes before
Special Weather Statement
National Weather Service La Crosse WI
821 AM CDT Wed Jul 1 2026
IAZ009-010-019-MNZ095-011345-
Winneshiek IA-Chickasaw IA-Howard IA-Fillmore MN-
821 AM CDT Wed Jul 1 2026
...STRONG THUNDERSTORMS WILL IMPACT EASTERN HOWARD...NORTHWESTERN
WINNESHIEK...NORTHEASTERN CHICKASAW AND SOUTHEASTERN FILLMORE
COUNTIES THROUGH 845 AM CDT...
At 821 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Lime Springs to near Cresco to near
Jerico. Movement was northeast at 50 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Strong thunderstorms will be near...
Cresco and Protivin around 825 AM CDT.
Harmony and Ridgeway around 830 AM CDT.
Canton around 835 AM CDT.
Other locations impacted by these storms include Vernon Springs
County Park, Choice, Vernon Springs, Hesper, County Roads V 58 And A
46, Bluffton, Locust, Davis Corners, County Roads W 14 And A 34, and
County Roads W 20 And A 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4374 9173 4329 9173 4311 9223 4345 9235
TIME...MOT...LOC 1321Z 236DEG 45KT 4345 9222 4332 9216 4317 9222
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
FergusonSpecial weather statement, Jul 1, 8:45 AM CDT, 34 minutes before
Special Weather Statement
National Weather Service La Crosse WI
845 AM CDT Wed Jul 1 2026
IAZ010-011-MNZ095-096-011415-
Winneshiek IA-Allamakee IA-Fillmore MN-Houston MN-
845 AM CDT Wed Jul 1 2026
...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN ALLAMAKEE...
NORTHEASTERN WINNESHIEK...HOUSTON AND SOUTHEASTERN FILLMORE COUNTIES
THROUGH 915 AM CDT...
At 845 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Lanesboro to near Mabel to near Decorah.
Movement was northeast at 50 mph.
HAZARD...Wind gusts of 50 to 55 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Strong thunderstorms will be near...
Spring Grove and Mabel around 850 AM CDT.
Caledonia and Houston around 900 AM CDT.
Other locations impacted by these storms include Choice, Hesper,
Highlandville, Quandahl, Riceford, Bluffton, Locust, Sattre,
Newhouse, and Eitzen.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4385 9154 4385 9147 4371 9138 4348 9143
4330 9192 4349 9196 4369 9199
TIME...MOT...LOC 1345Z 240DEG 43KT 4367 9192 4352 9182 4334 9187
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH
FergusonThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 9:26 PM CDT | Heat Advisory | ARX | Houston | 20 hr |
| Jul 1, 6:09 AM CDT | Severe Thunderstorm Warning | ARX | Mower | 31 min |
| Jul 1, 6:54 AM CDT | Severe Thunderstorm Warning | ARX | Fillmore, Olmsted, Wabasha, Winona | 51 min |
| Jul 1, 7:17 AM CDT | Severe Thunderstorm Warning | ARX | Winona | 43 min |
| Jul 1, 7:58 AM CDT | Areal Flood Advisory | ARX | Winona | 81 min |
| Jul 1, 8:05 AM CDT | Areal Flood Advisory | ARX | Dodge, Olmsted | 3 hr |
| Jul 1, 8:45 AM CDT | Special Weather Statement | ARX | Houston | 30 min |
| Jul 1, 9:08 AM CDT | Severe Thunderstorm Warning | ARX | Houston | 41 min |
Nearby
Flash Flood Warnings in Minnesota, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.