Alert archive / Wisconsin / Flash Flood Warnings in 2026
Flash Flood Warning 2, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Apr 13, 2026, 10:04 PM CDT for Monroe County, Wisconsin. It was in force for 3 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
- Apr 13, 2026, 10:04 PM CDT (03:04 UTC)
- Expired
- Apr 14, 2026, 1:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
County Monroe County, WI
The radar
The La Crosse radar (KARX), 56 km from the middle of the area, began a volume at 03:03 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.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.1 hours before the alert went out and 257 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
- 141 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 1158 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
The text
As transmitted.
194
WGUS53 KARX 140304
FFWARX
WIC081-140615-
/O.NEW.KARX.FF.W.0002.260414T0304Z-260414T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
1004 PM CDT Mon Apr 13 2026
The National Weather Service in La Crosse has issued a
* Flash Flood Warning for...
Northeastern Monroe County in west central Wisconsin...
* Until 115 AM CDT.
* At 1004 PM CDT, trained weather spotters reported thunderstorms
producing heavy rain across the warned area with street flooding
reported on Highway 12 in Tomah. Between 1.5 and 2.5 inches of
rain have fallen. Additional rainfall amounts of 1 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...Trained spotters 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...
Tomah, Fort Mc Coy, Warrens, Wyeville, Tunnel City, Kirby,
Jellystone Park Near Warrens, I 90 And I 94 Interchange and Valley
Junction.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4414 9060 4414 9049 4406 9036 4396 9043
4393 9059 4398 9072 4405 9072
FLASH FLOOD...OBSERVED
$$
JAW2 follow-up statements
496
WGUS73 KARX 140358
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
1058 PM CDT Mon Apr 13 2026
WIC081-140615-
/O.CON.KARX.FF.W.0002.000000T0000Z-260414T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monroe WI-
1058 PM CDT Mon Apr 13 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM CDT TUESDAY
FOR NORTHEASTERN MONROE COUNTY...
At 1058 PM CDT, trained weather spotters reported thunderstorms
producing heavy rain across the warned area with street flooding
observed in Highway 12 in Tomah. Between 2 and 4 inches of rain have
fallen. Additional rainfall amounts up to 1 inch are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Trained spotters reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Tomah, Fort Mc Coy, Warrens, Wyeville, Tunnel City, Kirby,
Jellystone Park Near Warrens, I 90 And I 94 Interchange and Valley
Junction.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4414 9060 4414 9049 4406 9036 4396 9043
4393 9059 4398 9072 4405 9072
FLASH FLOOD...OBSERVED
$$
JAW865
WGUS73 KARX 140607
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
107 AM CDT Tue Apr 14 2026
WIC081-140617-
/O.EXP.KARX.FF.W.0002.000000T0000Z-260414T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monroe WI-
107 AM CDT Tue Apr 14 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 115 AM CDT EARLY THIS MORNING
FOR NORTHEASTERN MONROE COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
A Flood Watch remains in effect until 700 AM CDT for portions of
central, southwest, and west central Wisconsin.
&&
LAT...LON 4414 9060 4414 9049 4406 9036 4396 9043
4393 9059 4398 9072 4405 9072
$$
SkowThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 7:34 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Monroe | 56 min |
| Apr 13, 7:37 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 38 min |
| Apr 13, 8:28 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 32 min |
| Apr 13, 8:29 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Juneau, Monroe | 46 min |
| Apr 13, 8:49 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 41 min |
| Apr 13, 9:08 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 13 min |
| Apr 13, 9:31 PM CDT | River Flood Warning | ARX | Juneau | 9 days |
| Apr 13, 9:41 PM CDT | River Flood Warning | ARX | Jackson | 55 hr |
| Apr 13, 9:46 PM CDT | Special Weather Statement | ARX | Monroe | 59 min |
| Apr 13, 11:40 PM CDT | Severe Thunderstorm Warning | ARX | Grant, Richland | 35 min |
| Apr 14, 4:16 AM CDT | Dense Fog Advisory | ARX | Buffalo, Clark, Jackson, Trempealeau | 4 hr |
| Apr 14, 4:47 AM CDT | River Flood Warning | ARX | La Crosse, Trempealeau | 5 days |
| Apr 14, 5:40 AM CDT | River Flood Warning | ARX | Buffalo, Trempealeau | 49 hr |
| Apr 14, 10:52 AM CDT | River Flood Watch | ARX | Buffalo, Trempealeau | 18 hr |
| Apr 14, 4:17 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe, Vernon | 43 min |
| Apr 14, 4:53 PM CDT | Severe Thunderstorm Warning | ARX | Monroe, Vernon | 52 min |
| Apr 14, 5:12 PM CDT | Severe Thunderstorm Warning | ARX | Grant, Richland | 48 min |
| Apr 14, 5:25 PM CDT | Severe Thunderstorm Warning | ARX | Juneau | 50 min |
| Apr 14, 5:29 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 31 min |
| Apr 14, 5:29 PM CDT | Tornado Warning | ARX | Grant | 26 min |
| Apr 14, 5:33 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Monroe | 42 min |
| Apr 14, 5:37 PM CDT | Tornado Warning | ARX | Juneau, Vernon | 23 min |
| Apr 14, 5:54 PM CDT | Severe Thunderstorm Warning | ARX | Vernon | 23 min |
| Apr 14, 5:55 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 35 min |
| Apr 14, 5:59 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 46 min |
| Apr 14, 6:05 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 40 min |
| Apr 14, 6:10 PM CDT | Tornado Warning | ARX | Adams | 20 min |
| Apr 14, 6:43 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 25 min |
| Apr 14, 6:50 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 25 min |
Nearby
Flash Flood Warnings in Wisconsin, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.