Alert archive / Minnesota / Flash Flood Warnings in 2026
Flash Flood Warning 7, NWS La Crosse, WI
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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 2, 2:55 PM CDT | FLOOD | Reno, MN | MNDOT 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.
- 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
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
$$
JAW3 follow-up statements
048
WGUS73 KARX 021759
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
1259 PM CDT Thu Jul 2 2026
MNC045-055-021915-
/O.CON.KARX.FF.W.0007.000000T0000Z-260702T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fillmore MN-Houston MN-
1259 PM CDT Thu Jul 2 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM CDT THIS
AFTERNOON FOR SOUTHEASTERN FILLMORE AND SOUTHERN HOUSTON COUNTIES...
At 1259 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms produced heavy rain across the warned area. Between 5
and 7.5 inches of rain have fallen. Additional rainfall amounts of 1
to 2 inches are possible in the warned area over the next several
hours. Flooding is already occurring. Additional heavy rainfall
expected over the several hours may exacerbate ongoing flooding,
creating life-threatening conditions.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Caledonia, Spring Grove, Mabel, Brownsville, Canton, Wilmington,
Reno, Newburg, Yucatan, Sheldon, Black Hammer, Eitzen, Willington
Grove, Beaver Creek Valley State Park, Dun Romin Park Campground,
County 16 And 4 Corners Drive, County 14 And White Tail Road,
Riceford, Highway 44 And Sanden Road and Newhouse.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4371 9162 4372 9126 4371 9127 4365 9127
4364 9126 4362 9127 4358 9123 4354 9124
4352 9123 4351 9122 4350 9122 4351 9141
4350 9204 4360 9193
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
JAW763
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
$$
JAW339
WGUS73 KARX 022103
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
403 PM CDT Thu Jul 2 2026
MNC045-055-022113-
/O.CAN.KARX.FF.W.0007.000000T0000Z-260702T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fillmore MN-Houston MN-
403 PM CDT Thu Jul 2 2026
...FLASH FLOOD WARNING FOR SOUTHEASTERN FILLMORE AND SOUTHERN HOUSTON
COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...
While rapidly flowing water and rapid rises have ended, flooded
roadways remain across the area. Therefore the Flash Flood Warning
has been replaced by a Flood Warning. Please refer to that bulletin
for more information.
A Flood Watch remains in effect until 700 AM CDT Friday for portions
of Iowa, southeast Minnesota, and Wisconsin.
&&
LAT...LON 4371 9162 4372 9126 4371 9127 4365 9127
4364 9126 4362 9127 4358 9123 4354 9124
4352 9123 4351 9122 4350 9122 4351 9141
4350 9204 4360 9193
$$
JAWWhat 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
&&
JSBLocal 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
&&
JSBLocal 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
&&
JSBLocal 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
&&
JSBLocal 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
&&
JSBSpecial 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
FergusonThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 7:32 PM CDT | Severe Thunderstorm Warning | ARX | Mower | 43 min |
| Jul 1, 7:55 PM CDT | Severe Thunderstorm Warning | ARX | Fillmore, Olmsted, Wabasha, Winona | 31 min |
| Jul 1, 9:00 PM CDT | Tornado Warning | ARX | Fillmore | 15 min |
| Jul 1, 10:17 PM CDT | Areal Flood Advisory | ARX | Fillmore, Houston | 3 hr |
| Jul 2, 2:03 AM CDT | Areal Flood Advisory | ARX | Fillmore, Houston, Mower, Winona | 6 hr |
| Jul 2, 4:23 AM CDT | Flash Flood Warning | ARX | Fillmore, Houston, Mower | 3 hr |
| Jul 2, 5:59 AM CDT | Flash Flood Warning | ARX | Houston | 2 hr |
| Jul 2, 8:07 AM CDT | Flood Watch | ARX | Fillmore, Houston, Mower, Olmsted, Winona | 36 hr |
| Jul 2, 9:07 AM CDT | Special Weather Statement | ARX | Dodge, Mower | 23 min |
| Jul 2, 11:13 AM CDT | Areal Flood Warning | ARX | Fillmore | 12 hr |
| Jul 2, 11:46 AM CDT | River Flood Warning | ARX | Mower | 29 hr |
| Jul 2, 1:47 PM CDT | Flash Flood Warning | ARX | Fillmore | 110 min |
| Jul 2, 2:35 PM CDT | River Flood Warning | ARX | Fillmore, Houston | 22 hr |
| Jul 2, 3:37 PM CDT | Areal Flood Warning | ARX | Fillmore | 7 hr |
| Jul 2, 4:03 PM CDT | Areal Flood Warning | ARX | Fillmore, Houston | 3 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.