Alert archive / Wisconsin / Flash Flood Warnings in 2016

Flash Flood Warning 29, NWS La Crosse, WI

September 7, 2016Richland County, Vernon County, Wisconsin

NWS La Crosse, WI issued this flash flood warning at Sep 7, 2016, 7:27 AM CDT for Richland County, Vernon County, Wisconsin. It was in force for 3 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 7, 2016, 7:27 AM CDT (12:27 UTC)
Expired
Sep 7, 2016, 10:30 AM CDT
In force
3 hr
Issued by
NWS La Crosse, WI
Area
Storm-based polygon
Flood severity
None

Counties Richland County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 39 km from the middle of the area, began a volume at 12:29 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

TimeReportWhereRemark
Sep 7, 9:39 AM CDTFLOOD2 Ssw La Farge, WIWATER STILL OVER ROADWAY BETWEEN VIOLA AND LA FARGE
Sep 7, 9:39 AM CDTFLOOD2 Ssw La Farge, WIWATER STILL OVER ROADWAY BETWEEN VIOLA AND LA FARGE.

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 12:00Z, 0.5 hours before the alert went out and 216 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.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 2016-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 624 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2016-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 157 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
624 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
1224 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
157 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

127 
WGUS53 KARX 071227
FFWARX
WIC103-123-071530-
/O.NEW.KARX.FF.W.0029.160907T1227Z-160907T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
727 AM CDT WED SEP 7 2016

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  VERNON COUNTY IN SOUTHWESTERN WISCONSIN...
  NORTHERN RICHLAND COUNTY IN SOUTHWESTERN WISCONSIN...

* UNTIL 1030 AM CDT

* AT 725 AM CDT...LAW ENFORCEMENT REPORTED FLOODING IN YUBA WITH
  SANDBAGGING GOING ON ALONG THE PINE RIVER. CAMPERS EVACUATED FROM
  SIDIE PARK NEAR VIROQUA. RAIN IN EXCESS OF 5 INCHES HAS FALLEN AT
  SOME LOCATIONS. ADDITIONAL RAINFALL UP TO ONE INCH IS POSSIBLE
  THROUGH MID MORNING.

THIS IS AN EXTENSION OF THE PREVIOUS WARNING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  VIROQUA...WESTBY...HILLSBORO...STODDARD...LA FARGE...GERMANTOWN...
  NEWTON...SPRINGVILLE...ROCKBRIDGE...VIOLA...SYLVAN...LIBERTY...
  READSTOWN...CAZENOVIA...DE SOTO...CHASEBURG...GENOA...
  AND YUBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4343 9122 4345 9123 4352 9122 4355 9125
      4358 9123 4361 9127 4366 9127 4366 9032
      4356 9031 4355 9019 4342 9019

$$

RIECK
1 follow-up statement
313 
WGUS73 KARX 071407
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
907 AM CDT WED SEP 7 2016

WIC103-123-071530-
/O.CON.KARX.FF.W.0029.000000T0000Z-160907T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VERNON WI-RICHLAND WI-
907 AM CDT WED SEP 7 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT FOR
VERNON AND NORTHERN RICHLAND COUNTIES...

AT 903 AM CDT...LOCAL LAW ENFORCEMENT REPORTED WATER REMAINS HIGH AT
YUBA. MANY WATER COVERED ROADS FROM GENOA...VIROQUA AND LA FARGE TO
THE SOUTH. SOME ROAD CLOSURES NEAR GENOA. MUDSLIDE NEAR VICTORY BY
COUNTY ROAD UU.

SCATTERED SHOWERS AND STORMS WILL PERSIST THROUGH LATE
MORNING...WITH AN ADDITIONAL 1/2 INCH OF RAIN POSSIBLE. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
VIROQUA...WESTBY...HILLSBORO...STODDARD...LA FARGE...GERMANTOWN...
NEWTON...SPRINGVILLE...VIOLA...READSTOWN...CAZENOVIA...DE SOTO...
CHASEBURG...GENOA...AND YUBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4343 9122 4345 9123 4352 9122 4355 9125
      4358 9123 4361 9127 4366 9127 4366 9032
      4356 9031 4355 9019 4342 9019

$$

RIECK

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 6, 8:38 PM CDTSpecial Weather StatementARXRichland52 min
Sep 6, 11:00 PM CDTSpecial Weather StatementARXLa Crosse3 hr
Sep 7, 3:35 AM CDTFlash Flood WarningARXRichland, Vernon4 hr
Sep 7, 6:38 AM CDTRiver Flood WarningARXVernon3 days
Sep 7, 6:51 AM CDTRiver Flood WarningARXRichland, Vernon57 hr
Sep 7, 7:24 AM CDTRiver Flood WarningARXCrawford3 days
Sep 7, 8:01 AM CDTRiver Flood WarningARXCrawford5 days
Sep 7, 10:04 AM CDTRiver Flood WarningARXCrawford6 days
Sep 7, 10:14 AM CDTAreal Flood WarningARXCrawford, Richland, Vernon6 hr
Sep 7, 3:37 PM CDTAreal Flood WarningARXCrawford, Richland, Vernon12 hr

Nearby

Flash Flood Warnings in Wisconsin, 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.