Alert archive / Minnesota / Flash Flood Warnings in 2026

Flash Flood Warning 7, NWS La Crosse, WI

July 2, 2026Fillmore County, Houston County, Minnesota

NWS La Crosse, WI issued this flash flood warning at Jul 2, 2026, 9:22 AM CDT for Fillmore County, Houston County, Minnesota. It was in force for 7 hr. 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
Jul 2, 2026, 9:22 AM CDT (14:22 UTC)
Expired
Jul 2, 2026, 4:03 PM CDT
In force
7 hr
Issued by
NWS La Crosse, WI
Area
Storm-based polygon
Flood severity
None

Counties Fillmore County, MN, Houston County, MN

The radar

The La Crosse radar (KARX), 30 km from the middle of the area, began a volume at 14:22 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

TimeReportWhereRemark
Jul 2, 2:55 PM CDTFLOODReno, MNMNDOT reports flooding over roadway on MN 26 with detour in place. Time unknown when flooding began.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 2.4 hours before the alert went out and 223 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2026-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 152 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2026-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
152 J/kg
Mixed-layer CIN
-173 J/kg
Mixed-layer LCL
1469 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.0

Open this sounding in Storm Lab

The text

As transmitted.

662 
WGUS53 KARX 021422
FFWARX
MNC045-055-021915-
/O.NEW.KARX.FF.W.0007.260702T1422Z-260702T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
922 AM CDT Thu Jul 2 2026

The National Weather Service in La Crosse has issued a

* Flash Flood Warning for...
  Southeastern Fillmore County in southeastern Minnesota...
  Southern Houston County in southeastern Minnesota...

* Until 215 PM CDT.

* At 922 AM CDT, Doppler radar and automated rain gauges indicated
  thunderstorms produced heavy rain across the warned area. Between 5
  and 7.5 inches of rain have fallen. Additional rainfall amounts of
  1 to 2 inches are possible in the warned area over the next several
  hours. Flash flooding is already occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  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...
  Caledonia, Spring Grove, Mabel, Brownsville, Canton, Wilmington,
  Reno, Newburg, Yucatan, Sheldon, Black Hammer, Eitzen, Willington
  Grove, Beaver Creek Valley State Park, Dun Romin Park Campground,
  County 16 And 4 Corners Drive, County 14 And White Tail Road,
  Riceford, Highway 44 And Sanden Road and Newhouse.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4371 9162 4372 9126 4371 9127 4365 9127
      4364 9126 4362 9127 4358 9123 4354 9124
      4352 9123 4351 9122 4350 9122 4351 9141
      4350 9204 4360 9193

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

JAW
3 follow-up statements
048 
WGUS73 KARX 021759
FFSARX

Flash Flood Statement
National Weather Service La Crosse WI
1259 PM CDT Thu Jul 2 2026

MNC045-055-021915-
/O.CON.KARX.FF.W.0007.000000T0000Z-260702T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fillmore MN-Houston MN-
1259 PM CDT Thu Jul 2 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM CDT THIS
AFTERNOON FOR SOUTHEASTERN FILLMORE AND SOUTHERN HOUSTON COUNTIES...

At 1259 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms produced heavy rain across the warned area. Between 5
and 7.5 inches of rain have fallen. Additional rainfall amounts of 1
to 2 inches are possible in the warned area over the next several
hours. Flooding is already occurring. Additional heavy rainfall
expected over the several hours may exacerbate ongoing flooding,
creating life-threatening conditions.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

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...
  Caledonia, Spring Grove, Mabel, Brownsville, Canton, Wilmington,
  Reno, Newburg, Yucatan, Sheldon, Black Hammer, Eitzen, Willington
  Grove, Beaver Creek Valley State Park, Dun Romin Park Campground,
  County 16 And 4 Corners Drive, County 14 And White Tail Road,
  Riceford, Highway 44 And Sanden Road and Newhouse.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4371 9162 4372 9126 4371 9127 4365 9127
      4364 9126 4362 9127 4358 9123 4354 9124
      4352 9123 4351 9122 4350 9122 4351 9141
      4350 9204 4360 9193

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

JAW
763 
WGUS53 KARX 021857
FFWARX
MNC045-055-022115-
/O.EXT.KARX.FF.W.0007.000000T0000Z-260702T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
157 PM CDT Thu Jul 2 2026

The National Weather Service in La Crosse has extended the

* Flash Flood Warning for...
  Southeastern Fillmore County in southeastern Minnesota...
  Southern Houston County in southeastern Minnesota...

* Until 415 PM CDT.

* At 157 PM CDT, Doppler radar and automated rain gauges indicated
  thunderstorms produced heavy rain across the warned area. Between 5
  and 7.5 inches of rain have fallen. Additional rainfall amounts of
  1 to 2 inches are possible in the warned area over the next several
  hours. Flooding is already occurring. Additional heavy rainfall
  expected over the several hours may exacerbate ongoing flooding,
  creating life-threatening conditions.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  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...
  Caledonia, Spring Grove, Mabel, Brownsville, Canton, Wilmington,
  Reno, Newburg, Yucatan, Sheldon, Black Hammer, Eitzen, Willington
  Grove, Beaver Creek Valley State Park, Dun Romin Park Campground,
  County 16 And 4 Corners Drive, County 14 And White Tail Road,
  Riceford, Highway 44 And Sanden Road and Newhouse.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4371 9162 4372 9126 4371 9127 4365 9127
      4364 9126 4362 9127 4358 9123 4354 9124
      4352 9123 4351 9122 4350 9122 4351 9141
      4350 9204 4360 9193

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

JAW
339 
WGUS73 KARX 022103
FFSARX

Flash Flood Statement
National Weather Service La Crosse WI
403 PM CDT Thu Jul 2 2026

MNC045-055-022113-
/O.CAN.KARX.FF.W.0007.000000T0000Z-260702T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fillmore MN-Houston MN-
403 PM CDT Thu Jul 2 2026

...FLASH FLOOD WARNING FOR SOUTHEASTERN FILLMORE AND SOUTHERN HOUSTON
COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...

While rapidly flowing water and rapid rises have ended, flooded
roadways remain across the area. Therefore the Flash Flood Warning
has been replaced by a Flood Warning. Please refer to that bulletin
for more information.

A Flood Watch remains in effect until 700 AM CDT Friday for portions
of Iowa, southeast Minnesota, and Wisconsin.

&&

LAT...LON 4371 9162 4372 9126 4371 9127 4365 9127
      4364 9126 4362 9127 4358 9123 4354 9124
      4352 9123 4351 9122 4350 9122 4351 9141
      4350 9204 4360 9193

$$

JAW

What 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 2, 6:48 AM CDT, 2 hours 34 minutes earlier. Its key messages:

  • Periodic severe weather and flash flooding will be possible into the weekend.
Area forecast discussion, Jul 2, 6:48 AM CDT, 2 hours 34 minutes before
Area Forecast Discussion
National Weather Service La Crosse WI
648 AM CDT Thu Jul 2 2026

.KEY MESSAGES...

- Periodic severe weather and flash flooding will be possible
  into the weekend.

&&

.DISCUSSION...
Issued at 140 AM CDT Wed Jul 2 2026

Overnight

As a shortwave trough over southern Wisconsin moves away from
the area overnight, the shower and thunderstorm coverage will
gradually decrease through 3 am and then the coverage should
once again increase as a shortwave trough moves out of southern
South Dakota and northern Nebraska and along the Minnesota and
Iowa border. This convection will likely be initially along the
Interstate 90 corridor and then gradually sink south as it
develops a cold pool.

With precipitable water values ranging from 2 to 2.5 inches and
warm cloud depths over 4 km, these storms will be highly
efficient rain producers. The 6-hour QPF ensemble probability-
matched mean from 02.06z and 02.12z has some rain totals in the
2 to 5 inch range. This could result in some flash flooding
along and south of Interstate 90.

Today and Tonight

After the morning convection, there is much uncertainty on
whether storms will redevelop during the afternoon or not. Many
of the CAMs are dry, but the HRRR and RAP13 show another round
of showers and storms developing mainly along and south of
Interstate 94. These then linger into tonight. Any severe
weather threat would be pulsey this afternoon and highly
dependent upon the potential of a mesoscale convective complex
moving into the area tonight. The main severe weather threats
would be damaging winds, large hail, and maybe isolated
tornadoes.

Like overnight, the precipitable water vapor will range from 2
to 2.5 inches and the warm cloud depths will be over 4 km. As a
result, any storms will be highly efficient rain producers. The
24-hour QPF ensemble probability-matched shows a potential for 3
to 5 inches of rain mainly south of Interstate 90.

Friday into the Issued at 140 AM CDT Wed Jul 2 2026Weekend

A frontal boundary will meander across the forecast area as
shortwave trough and surface lows move through the weekend. The
timing of these waves is rather uncertain, but as they move
through the region the 0-3 km and 0-6 km shear will increase
ahead of them and this will provide a chance of supercells and
bow echos.

Precipitable water values will remain around 2 inches through
the 4th and then gradually decrease to around 1.5 inches as the
boundary finally shifts south. Warm cloud layer depths will
remain around 4 km. This will result in additional rounds of
heavy rain. Flood watches may eventually be needed.

&&

.AVIATION /12Z TAFS THROUGH 12Z FRIDAY/...
Issued at 649 AM CDT Thu Jul 2 2026

Showers and storms will move out of the between 02.14 and
02.16z. Another round of showers and storms may move into the
area this afternoon followed by another one after 03.09z. These
storms will produce IFR/MVFR ceilings at times.

&&

.HYDROLOGY...
Issued at 140 AM CDT Wed Jul 2 2026

During the evening, rainfall totals were up to 3 inches. With
precipitable water values ranging from 2 to 2.5 inches and
warm cloud depths over 4 km, these storms will be highly
efficient rain producers. The 6-hour QPF ensemble probability-
matched mean from 02.06z and 02.12z has some rain totals in the
2 to 5 inch range. This could result in some flash flooding
along and south of Interstate 90.

Through at least July 4, precipitable water values will remain
around 2 to 2.5 inches and warm cloud layer depths will be
around 4 km. This will result in additional rounds of heavy
rain. Flood watches may eventually be needed.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
IA...None.

&&

DISCUSSION...Boyne
AVIATION...Boyne
HYDROLOGY...Boyne
Hazardous weather outlook, Jul 2, 3:01 AM CDT, 6 hours 21 minutes before
Hazardous Weather Outlook
National Weather Service La Crosse WI
301 AM CDT Thu Jul 2 2026

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-031100-
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-
301 AM CDT Thu Jul 2 2026

This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.

.DAY ONE...Today and Tonight

Periodic storms will occur through mid-morning and then they could
potentially redevelop this afternoon and tonight. Some of the
storms may become severe this afternoon and tonight. The main
threats will be damaging winds, hail, isolated tornadoes, and
heavy rain.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The threat for severe thunderstorms and flooding continues on
Friday and possibly into the weekend.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed periodically into the weekend.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

Boyne

In the hours before

Local storm report, Jul 2, 7:00 AM CDT, 2 hours 22 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
700 AM CDT Thu Jul 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 AM     Rain             Elkton                  43.66N 92.71W
07/02/2026  M7.00 Inch       Mower              MN   Public

&&

JSB
Local storm report, Jul 2, 7:03 AM CDT, 2 hours 19 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
703 AM CDT Thu Jul 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0502 AM     Rain             Melvina                 43.80N 90.77W
07/02/2026  M5.00 Inch       Monroe             WI   Public

&&

JSB
Local storm report, Jul 2, 7:04 AM CDT, 2 hours 18 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
704 AM CDT Thu Jul 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 AM     Rain             2 SW Austin             43.65N 93.00W
07/02/2026  E2.10 Inch       Mower              MN   Public

&&

JSB
Local storm report, Jul 2, 7:06 AM CDT, 2 hours 16 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
706 AM CDT Thu Jul 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0218 AM     Rain             Wykoff                  43.71N 92.27W
07/02/2026  M6.29 Inch       Fillmore           MN   Public

&&

JSB
Local storm report, Jul 2, 7:08 AM CDT, 2 hours 14 minutes before
Preliminary Local Storm Report
National Weather Service La Crosse WI
708 AM CDT Thu Jul 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 AM     Rain             Harmony                 43.55N 92.01W
07/02/2026  M4.25 Inch       Fillmore           MN   Public

&&

JSB
Special weather statement, Jul 2, 9:07 AM CDT, 15 minutes before
Special Weather Statement
National Weather Service La Crosse WI
907 AM CDT Thu Jul 2 2026

MNZ086-087-094-021430-
Olmsted MN-Dodge MN-Mower MN-
907 AM CDT Thu Jul 2 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN OLMSTED...
NORTHWESTERN MOWER AND SOUTHEASTERN DODGE COUNTIES THROUGH 930 AM
CDT...

At 907 AM CDT, Doppler radar was tracking a strong thunderstorm near
Brownsdale, or 9 miles northeast of Austin, moving northeast at 45
mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This strong thunderstorm will be near...
  Hayfield around 915 AM CDT.

Other locations impacted by this storm include County Roads 3 And
108, Highway 57 And 570th Street, County Roads 6 And 15, Salem
Corners, County Roads 5 And 6, Rock Dell, Brookside Campground,
Mayville, Highway 56 And County 6, and Rochester Airport.

This includes Interstate 90 in Minnesota between mile markers 175 and
213.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4393 9304 4414 9278 4389 9237 4385 9243
      4385 9245 4383 9245 4355 9284 4361 9305
TIME...MOT...LOC 1407Z 230DEG 39KT 4379 9288

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

Ferguson

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 1, 7:32 PM CDTSevere Thunderstorm WarningARXMower43 min
Jul 1, 7:55 PM CDTSevere Thunderstorm WarningARXFillmore, Olmsted, Wabasha, Winona31 min
Jul 1, 9:00 PM CDTTornado WarningARXFillmore15 min
Jul 1, 10:17 PM CDTAreal Flood AdvisoryARXFillmore, Houston3 hr
Jul 2, 2:03 AM CDTAreal Flood AdvisoryARXFillmore, Houston, Mower, Winona6 hr
Jul 2, 4:23 AM CDTFlash Flood WarningARXFillmore, Houston, Mower3 hr
Jul 2, 5:59 AM CDTFlash Flood WarningARXHouston2 hr
Jul 2, 8:07 AM CDTFlood WatchARXFillmore, Houston, Mower, Olmsted, Winona36 hr
Jul 2, 9:07 AM CDTSpecial Weather StatementARXDodge, Mower23 min
Jul 2, 11:13 AM CDTAreal Flood WarningARXFillmore12 hr
Jul 2, 11:46 AM CDTRiver Flood WarningARXMower29 hr
Jul 2, 1:47 PM CDTFlash Flood WarningARXFillmore110 min
Jul 2, 2:35 PM CDTRiver Flood WarningARXFillmore, Houston22 hr
Jul 2, 3:37 PM CDTAreal Flood WarningARXFillmore7 hr
Jul 2, 4:03 PM CDTAreal Flood WarningARXFillmore, Houston3 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.