Alert archive / Minnesota / Flash Flood Warnings in 2026
Flash Flood Warning 13, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Sep 18, 2026, 10:59 PM CDT for Houston County, Minnesota. It was in force for 4 hr. 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
- Sep 18, 2026, 10:59 PM CDT (03:59 UTC)
- Expired
- Sep 19, 2026, 2:43 AM CDT
- In force
- 4 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
County Houston County, MN
The radar
The La Crosse radar (KARX), 21 km from the middle of the area, began a volume at 04:00 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 |
|---|---|---|---|
| Sep 19, 12:01 AM CDT | FLASH FLOOD | 3 Sse Sheldon, MN | Water about to cover entrance road. |
| Sep 19, 12:25 AM CDT | FLASH FLOOD | 3 Ene Sheldon, MN | Mudslides reported on Hwy 76 West of Caledonia. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 4.0 hours before the alert went out and 222 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
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 470 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 447 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
552
WGUS53 KARX 190359
FFWARX
MNC055-190800-
/O.NEW.KARX.FF.W.0013.260919T0359Z-260919T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
1059 PM CDT Fri Sep 18 2026
The National Weather Service in La Crosse has issued a
* Flash Flood Warning for...
Houston County in southeastern Minnesota...
* Until 300 AM CDT.
* At 1059 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 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...
Caledonia, Houston, Hokah, Brownsville, Mound Prairie, Money Creek,
Reno, Yucatan, Sheldon, Black Hammer, Highway 44 And Sanden Road,
Beaver Creek Valley State Park, Dun Romin Park Campground, County
14 And White Tail Road, Freeburg, County Roads 3 And 24, Perkins
and County Roads 15 And 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4382 9146 4379 9126 4376 9125 4371 9127
4365 9127 4364 9126 4362 9127 4358 9123
4357 9123 4355 9124 4351 9123 4361 9173
4385 9173
FLASH FLOOD...RADAR INDICATED
$$
BRM3 follow-up statements
557
WGUS73 KARX 190455
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
1155 PM CDT Fri Sep 18 2026
MNC055-190800-
/O.CON.KARX.FF.W.0013.000000T0000Z-260919T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Houston MN-
1155 PM CDT Fri Sep 18 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 3 AM CDT SATURDAY FOR
HOUSTON COUNTY...
At 1155 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 3 and 6 inches of rain have
fallen. Additional rainfall amounts of 1 to 3 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Caledonia, Houston, Hokah, Brownsville, Mound Prairie, Money Creek,
Reno, Yucatan, Sheldon, Black Hammer, Highway 44 And Sanden Road,
Beaver Creek Valley State Park, Dun Romin Park Campground, County
14 And White Tail Road, Freeburg, County Roads 3 And 24, Perkins
and County Roads 15 And 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4382 9146 4379 9126 4376 9125 4371 9127
4365 9127 4364 9126 4362 9127 4358 9123
4357 9123 4355 9124 4351 9123 4361 9173
4385 9173
FLASH FLOOD...RADAR INDICATED
$$
JAW088
WGUS73 KARX 190525
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
1225 AM CDT Sat Sep 19 2026
MNC055-190800-
/O.CON.KARX.FF.W.0013.000000T0000Z-260919T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Houston MN-
1225 AM CDT Sat Sep 19 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 3 AM CDT EARLY THIS
MORNING FOR HOUSTON COUNTY...
At 1225 AM CDT, local law enforcement reported thunderstorms
producing heavy rain. A mudslide was reported on Highway 76 west of
Caledonia near Badger Creek. Water going over the roadway at Beaver
Creek Valley State Park. Between 4 and 6.5 inches of rain have
fallen. Additional rainfall amounts up to 1.5 inches are possible in
the warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement reported.
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, Houston, Hokah, Brownsville, Mound Prairie, Money Creek,
Reno, Yucatan, Sheldon, Black Hammer, Highway 44 And Sanden Road,
Beaver Creek Valley State Park, Dun Romin Park Campground, County
14 And White Tail Road, Freeburg, County Roads 3 And 24, Perkins
and County Roads 15 And 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4382 9146 4379 9126 4376 9125 4371 9127
4365 9127 4364 9126 4362 9127 4358 9123
4357 9123 4355 9124 4351 9123 4361 9173
4385 9173
FLASH FLOOD...OBSERVED
$$
JAW397
WGUS73 KARX 190743
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
243 AM CDT Sat Sep 19 2026
MNC055-190753-
/O.CAN.KARX.FF.W.0013.000000T0000Z-260919T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Houston MN-
243 AM CDT Sat Sep 19 2026
...FLASH FLOOD WARNING FOR HOUSTON COUNTY HAS BEEN REPLACED WITH A
FLOOD WARNING...
While rapidly flowing water have ended, flooded roadways remain
across the area. Therefore the Flash Flood Warning has been replaced
by a Flood Warning. Please refer to that bulletin for more
information.
A Flood Watch remains in effect until 100 PM CDT Saturday for
portions of Iowa, southeast Minnesota, and Wisconsin.
&&
LAT...LON 4382 9146 4379 9126 4376 9125 4371 9127
4365 9127 4364 9126 4362 9127 4358 9123
4357 9123 4355 9124 4351 9123 4361 9173
4385 9173
$$
BRMThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 9:02 PM CDT | Flash Flood Warning | ARX | Fillmore, Mower | 5 hr |
| Sep 18, 11:46 PM CDT | Flash Flood Warning | ARX | Fillmore | 6 hr |
| Sep 19, 2:09 AM CDT | Areal Flood Warning | ARX | Fillmore, Mower | 9 hr |
| Sep 19, 2:43 AM CDT | Areal Flood Warning | ARX | Houston | 5 hr |
| Sep 19, 5:24 AM CDT | Areal Flood Warning | ARX | Fillmore | 5 hr |
| Sep 19, 5:42 AM CDT | River Flood Warning | ARX | Mower | 39 hr |
| Sep 19, 5:42 AM CDT | River Flood Warning | ARX | Mower | 39 hr |
| Sep 19, 6:23 AM CDT | River Flood Warning | ARX | Houston | 63 hr |
| Sep 19, 10:05 AM CDT | River Flood Warning | ARX | Fillmore, Houston | 11 hr |
| Sep 19, 10:32 AM CDT | Areal Flood Warning | ARX | Fillmore, Mower, Olmsted | 8 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.