Alert archive / Wisconsin / Flash Flood Warnings in 2011
Flash Flood Warning 4, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Jun 19, 2011, 2:54 AM CDT for Vernon County, Wisconsin. It was in force for 3 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
- Jun 19, 2011, 2:54 AM CDT (07:54 UTC)
- Expired
- Jun 19, 2011, 6:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
County Vernon County, WI
The radar
The La Crosse radar (KARX), 34 km from the middle of the area, began a volume at 07:54 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 |
|---|---|---|---|
| Jun 19, 3:15 AM CDT | FLASH FLOOD | Viroqua, WI | URBAN FLOODING/FLOODED INTERSECTIONS |
| Jun 19, 3:55 AM CDT | FLASH FLOOD | 4 Wsw Viroqua, WI | FLOODING IN SIDIE HOLLOW PARK AND CAMPGROUND |
| Jun 19, 4:45 AM CDT | FLASH FLOOD | 10 Sw Viroqua, WI | ROAD DAMAGE/ERODED CULVERTS IN SEVERAL LOCATIONS NORTH OF HIGHWAY 82 AND SOUTHWEST OF VIROQUA. |
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, 7.9 hours before the alert went out and 217 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
- 1046 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- -22 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
645
WGUS53 KARX 190754
FFWARX
WIC123-191100-
/O.NEW.KARX.FF.W.0004.110619T0754Z-110619T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
254 AM CDT SUN JUN 19 2011
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN VERNON COUNTY IN SOUTHWEST WISCONSIN...
* UNTIL 600 AM CDT
* AT 250 AM CDT... DOPPLER RADAR ESTIMATES AS MUCH AS 2 TO 4 INCHES
OF RAIN HAS FALLEN ACROSS SOUTHWEST VERNON COUNTY SINCE
MIDNIGHT. AS OF 250 AM...THUNDERSTORMS WERE BEGINNING TO MOVE OUT
OF THE AREA BUT RAIN CONTINUED OVER MUCH OF SOUTHWEST VERNON
COUNTY.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DESOTO...RED MOUND...WEST PRAIRIE...PURDY...ROMANCE.
THE PUBLIC REPORTED COULEE CREEK OUT OF ITS BANKS NEAR DESOTO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...
OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A
SMALL ONE...ON FOOT OR IN A VEHICLE.
&&
LAT...LON 4342 9119 4356 9124 4356 9123 4359 9123
4361 9126 4360 9071 4342 9067
$$
RRS3 follow-up statements
253
WGUS73 KARX 190908
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
408 AM CDT SUN JUN 19 2011
WIC123-191100-
/O.CON.KARX.FF.W.0004.000000T0000Z-110619T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VERNON WI-
408 AM CDT SUN JUN 19 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHWESTERN VERNON
COUNTY UNTIL 600 AM CDT...
AT 404 AM CDT...THUNDERSTORMS EARLIER IN THE MORNING DUMPED 2 TO AND
MUCH AS 5 INCHES OF RAIN ACROSS SOUTHWEST VERNON COUNTY.
THUNDERSTORMS HAVE SINCE MOVED OUT OF THE WARNING AREA BUT RUNOFF
FROM THE EARLIER RAINFALL CONTINUED.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
VICTORY...DESOTO...RETREAT...PURDY...LIBERTY POLE AND VIROQUA.
LAW ENFORCEMENT REPORTED FLOODING AT SIDIE HOLLOW PARK AND
CAMPGROUND SOUTHWEST OF VIROQUA. WATER WAS REPORTED RISING NEAR
VICTORY. STREET FLOODING HAD OCCURRED IN VIROQUA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.
&&
LAT...LON 4342 9119 4356 9124 4356 9123 4359 9123
4361 9126 4360 9071 4342 9067
$$423
WGUS73 KARX 191038
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
538 AM CDT SUN JUN 19 2011
WIC123-191100-
/O.CON.KARX.FF.W.0004.000000T0000Z-110619T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VERNON WI-
538 AM CDT SUN JUN 19 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHWESTERN VERNON
COUNTY UNTIL 600 AM CDT...
AT 530 AM CDT...PATCHY LIGHT RAIN CONTINUED ACROSS THE WARNING AREA
AND WAS CONTINUING TO DIMINISH. EARLIER IN THE NIGHT 2 TO AS MUCH AS
5 INCHES OF RAIN FELL ACROSS THE WARNING AREA.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
VIROQUA AND POINTS TO THE SOUTHWEST OF VIROQUA.
LAW ENFORCEMENT REPORTED ROAD DAMAGE NEAR EAGLES PARK SOUTHWEST OF
VIROQUA AND NORTH OF HIGHWAY 82 ACROSS THE SOUTH PART OF THE COUNTY.
WATER LEVELS WERE RECEDING ACROSS THE SOUTH PARTS OF THE COUNTY AS
OF 530 AM.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
IN HILLY TERRAIN...THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH
ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL
ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW
INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
&&
LAT...LON 4342 9119 4356 9124 4356 9123 4359 9123
4361 9126 4360 9071 4342 9067
$$
RRS211
WGUS73 KARX 191055
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
555 AM CDT SUN JUN 19 2011
WIC123-191107-
/O.EXP.KARX.FF.W.0004.000000T0000Z-110619T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VERNON WI-
555 AM CDT SUN JUN 19 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHWESTERN VERNON
COUNTY WILL BE ALLOWED TO EXPIRE AT 600 AM CDT...
EXCESS RUNOFF FROM HEAVY RAIN HAS DIMINISHED OVER THE WARNED AREA.
STREAMS AND CREEKS IN THE WARNED AREA WERE RECEDING...ENDING THE
FLASH FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT
TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 4342 9119 4356 9124 4356 9123 4359 9123
4361 9126 4360 9071 4342 9067
$$
RRSThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 7:18 PM CDT | Areal Flood Advisory | ARX | Buffalo | 2 hr |
| Jun 18, 11:16 PM CDT | Areal Flood Advisory | ARX | La Crosse | 3 hr |
| Jun 18, 11:27 PM CDT | Flash Flood Warning | ARX | Crawford | 3 hr |
| Jun 19, 1:36 AM CDT | Areal Flood Advisory | ARX | Vernon | 114 min |
| Jun 19, 3:09 AM CDT | Areal Flood Advisory | ARX | Crawford, Richland | 3 hr |
| Jun 19, 3:42 AM CDT | Flash Flood Warning | ARX | Crawford | 3 hr |
| Jun 19, 8:37 AM CDT | River Flood Warning | ARX | Crawford, Vernon | 12 hr |
| Jun 19, 9:28 AM CDT | River Flood Warning | ARX | Crawford, Vernon | 24 hr |
| Jun 19, 9:28 AM CDT | River Flood Warning | ARX | Crawford | 55 hr |
| Jun 19, 9:28 AM CDT | River Flood Warning | ARX | Crawford | 24 hr |
Nearby
Flash Flood Warnings in Wisconsin, 2011Every flash flood warning in 2011
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.