Alert archive / Wisconsin / Flash Flood Warnings in 2016
Flash Flood Warning 35, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Sep 21, 2016, 6:44 AM CDT for Houston County, Minnesota; Crawford County, Vernon County, Wisconsin; Allamakee County, Iowa. It was in force for 6 hr. 3 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 21, 2016, 6:44 AM CDT (11:44 UTC)
- Expired
- Sep 21, 2016, 12:45 PM CDT
- In force
- 6 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Allamakee County, IA, Houston County, MN, Crawford County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 46 km from the middle of the area, began a volume at 11:46 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 21, 6:57 AM CDT | HEAVY RAIN 2.92 | 1 S De Soto, WI | . THE DURATION OF THE HEAVY RAIN EVENT WAS 24 HOURS. |
| Sep 21, 7:10 AM CDT | FLASH FLOOD | De Soto, WI | MUDSLIDE COVERING ONE LANE OF HIGHWAY 82. |
| Sep 21, 7:30 AM CDT | FLASH FLOOD | New Albin, IA | A COUPLE OF MUDSLIDES ALONG HIGHWAY 26 BETWEEN NEW ALBIN AND LANSING |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 11.7 hours before the alert went out and 206 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
- 951 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1746 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
991 WGUS53 KARX 211144 FFWARX IAC005-MNC055-WIC023-123-211445- /O.NEW.KARX.FF.W.0035.160921T1144Z-160921T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 644 AM CDT WED SEP 21 2016 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN ALLAMAKEE COUNTY IN NORTHEASTERN IOWA... SOUTHEASTERN HOUSTON COUNTY IN SOUTHEASTERN MINNESOTA... NORTHWESTERN CRAWFORD COUNTY IN SOUTHWESTERN WISCONSIN... SOUTHWESTERN VERNON COUNTY IN SOUTHWESTERN WISCONSIN... * UNTIL 945 AM CDT * AT 638 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. 2 TO 3 INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING AND MUD SLIDES ARE EXPECTED TO BEGIN SHORTLY. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... VIROQUA...LANSING...NEW ALBIN...GAYS MILLS...DE SOTO...GENOA... MOUNT STERLING...AND FERRYVILLE. EXCESSIVE RAINFALL OVER THE WARNED AREA WILL LIKELY CAUSE MUD SLIDES ALONG HIGHWAYS 35 IN WISCONSIN AND HIGHWAY 26 IN MINNESOTA AND IOWA. THE MUD SLIDE CAN CONSIST OF ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS. ADDITIONAL RAINFALL AMOUNTS OF UP TO AN INCH ARE POSSIBLE IN THE WARNED AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 4330 9137 4358 9137 4357 9087 4330 9086 $$ JSB
2 follow-up statements
455 WGUS73 KARX 211220 FFSARX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 720 AM CDT WED SEP 21 2016 IAC005-MNC055-WIC023-123-211445- /O.CON.KARX.FF.W.0035.000000T0000Z-160921T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ ALLAMAKEE IA-HOUSTON MN-CRAWFORD WI-VERNON WI- 720 AM CDT WED SEP 21 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR NORTHEASTERN ALLAMAKEE...SOUTHEASTERN HOUSTON...NORTHWESTERN CRAWFORD AND SOUTHWESTERN VERNON COUNTIES... AT 713 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. RADAR ESTIMATED 2 TO 4 INCHES OF RAIN HAS ALREADY FALLEN ACROSS THIS AREA WITH UP TO AN ADDITIONAL INCH OF RAIN EXPECTED THIS MORNING. A MUD SLIDE WAS JUST REPORTED BY A COOPERATIVE OBSERVER IN DE SOTO WISCONSIN. THIS MUD SLIDE WAS COVERING ONE LANE OF HIGHWAY 82. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... VIROQUA...LANSING...NEW ALBIN...GAYS MILLS...DE SOTO...GENOA... MOUNT STERLING...AND FERRYVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 4330 9137 4358 9137 4357 9087 4330 9086 $$ JSB
821 WGUS53 KARX 211430 FFWARX IAC005-MNC055-WIC023-123-211745- /O.EXT.KARX.FF.W.0035.000000T0000Z-160921T1745Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 930 AM CDT WED SEP 21 2016 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS EXTENDED THE * FLASH FLOOD WARNING FOR... NORTHEASTERN ALLAMAKEE COUNTY IN NORTHEASTERN IOWA... SOUTHEASTERN HOUSTON COUNTY IN SOUTHEASTERN MINNESOTA... NORTHWESTERN CRAWFORD COUNTY IN SOUTHWESTERN WISCONSIN... SOUTHWESTERN VERNON COUNTY IN SOUTHWESTERN WISCONSIN... * UNTIL 1245 PM CDT * AT 925 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED MUDSLIDES AND SOME ROADS CLOSED DUE TO THE 2 TO 4 INCHES OF RAIN THAT FELL OVER THE WARNED AREA. ALTHOUGH MUCH OF THE RAIN HAS ENDED...WATER WILL TAKE TIME TO RECEDE AND CONCERN REMAINS FOR ADDITIONAL MUDSLIDES. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... VIROQUA...LANSING...NEW ALBIN...GAYS MILLS...DE SOTO...GENOA... MOUNT STERLING...FERRYVILLE...VILLAGE CREEK...RETREAT... RED MOUND...WEST PRAIRIE...RISING SUN...RED BARN CAMPGROUND... BUD...CHURCHTOWN...JOY HOLLOW AND FARGO. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE MUDSLIDES AS WELL AS FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING SPOTS. && LAT...LON 4330 9137 4358 9137 4357 9087 4330 9086 $$ AJ
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 11:26 PM CDT | Special Weather Statement | ARX | Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more | 109 min |
| Sep 21, 12:30 AM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 32 min |
| Sep 21, 12:51 AM CDT | Severe Thunderstorm Warning | ARX | Dodge, Olmsted | 54 min |
| Sep 21, 1:25 AM CDT | Special Weather Statement | ARX | Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more | 110 min |
| Sep 21, 3:31 AM CDT | Special Weather Statement | ARX | Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more | 119 min |
| Sep 21, 5:40 AM CDT | Flash Flood Warning | ARX | Wabasha, Winona | 3 hr |
| Sep 21, 12:20 PM CDT | Special Weather Statement | ARX | Winona | 40 min |
| Sep 21, 6:23 PM CDT | Flash Flood Warning | ARX | Mower | 6 hr |
| Sep 21, 12:11 AM CDT | Special Weather Statement | ARX | Clark, Jackson, Trempealeau | 109 min |
| Sep 21, 12:21 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, Trempealeau | 41 min |
| Sep 21, 1:45 AM CDT | Severe Thunderstorm Warning | ARX | Adams | 28 min |
| Sep 21, 2:23 AM CDT | Special Weather Statement | ARX | Crawford, La Crosse, Monroe, Richland, Vernon | 67 min |
| Sep 21, 8:26 AM CDT | Flash Flood Warning | ARX | Jackson, La Crosse, Monroe, Trempealeau | 3 hr |
| Sep 21, 10:10 AM CDT | River Flood Warning | ARX | Jackson | 3 days |
| Sep 21, 10:10 AM CDT | River Flood Warning | ARX | La Crosse, Trempealeau | 6 days |
| Sep 21, 10:10 AM CDT | River Flood Warning | ARX | Buffalo, Trempealeau | 4 days |
| Sep 21, 10:10 AM CDT | River Flood Warning | ARX | Buffalo, Trempealeau | 7 days |
| Sep 21, 10:27 AM CDT | River Flood Warning | ARX | Richland, Vernon | 4 days |
| Sep 21, 10:27 AM CDT | River Flood Warning | ARX | Vernon | 5 days |
| Sep 21, 10:27 AM CDT | River Flood Warning | ARX | Crawford | 5 days |
| Sep 21, 10:27 AM CDT | River Flood Warning | ARX | Crawford | 7 days |
| Sep 21, 10:27 AM CDT | River Flood Warning | ARX | Crawford | 8 days |
| Sep 21, 11:31 AM CDT | Flash Flood Warning | ARX | La Crosse, Monroe | 3 hr |
| Sep 21, 12:55 PM CDT | Special Weather Statement | ARX | Trempealeau | 50 min |
| Sep 21, 1:01 PM CDT | Special Weather Statement | ARX | Richland | 44 min |
| Sep 21, 1:05 PM CDT | Special Weather Statement | ARX | Clark | 55 min |
| Sep 21, 2:13 PM CDT | Flash Flood Warning | ARX | Clark | 5 hr |
| Sep 21, 2:54 PM CDT | Special Weather Statement | ARX | Adams | 21 min |
| Sep 21, 2:59 PM CDT | Special Weather Statement | ARX | Jackson | 46 min |
| Sep 21, 4:43 PM CDT | River Flood Warning | ARX | Juneau | 7 days |
| Sep 21, 5:33 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 42 min |
| Sep 21, 5:44 PM CDT | Special Weather Statement | ARX | Adams, Juneau | 46 min |
| Sep 21, 5:57 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau, Monroe | 48 min |
| Sep 21, 6:58 PM CDT | Flash Flood Warning | ARX | Adams | 4 hr |
| Sep 21, 4:09 PM CDT | Special Weather Statement | ARX | Floyd | 51 min |
| Sep 21, 4:21 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 39 min |
| Sep 21, 4:47 PM CDT | Flash Flood Warning | ARX | Floyd | 4 hr |
| Sep 21, 5:03 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 57 min |
| Sep 21, 5:20 PM CDT | Tornado Warning | ARX | Floyd | 40 min |
| Sep 21, 5:52 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 35 min |
| Sep 21, 6:01 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 44 min |
| Sep 21, 6:03 PM CDT | Flash Flood Warning | ARX | Floyd | 3 hr |
| Sep 21, 6:18 PM CDT | Tornado Warning | ARX | Floyd | 42 min |
| Sep 21, 6:53 PM CDT | Tornado Warning | ARX | Chickasaw, Floyd | 32 min |
Nearby
Flash Flood Warnings in Wisconsin, 2016Flash Flood Warnings in Minnesota, 2016Flash Flood Warnings in Iowa, 2016Every flash flood warning in 2016
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.