Alert archive / Wisconsin / Flash Flood Warnings in 2016

Flash Flood Warning 57, NWS La Crosse, WI

September 22, 2016Crawford County, Richland County, Vernon County, Wisconsin; Allamakee County, Iowa

NWS La Crosse, WI issued this flash flood warning at Sep 22, 2016, 9:38 AM CDT for Crawford County, Richland County, Vernon County, Wisconsin; Allamakee County, Iowa. It was in force for 3 hr. 1 report 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 22, 2016, 9:38 AM CDT (14:38 UTC)
Expired
Sep 22, 2016, 1:00 PM CDT
In force
3 hr
Issued by
NWS La Crosse, WI
Area
Storm-based polygon
Flood severity
None

Counties Allamakee County, IA, Crawford County, WI, Richland County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 63 km from the middle of the area, began a volume at 14:38 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 22, 10:42 AM CDTFLASH FLOODViola, WIWATER ACROSS HIGHWAY IN MIDDLE OF TOWN.

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, 2.6 hours before the alert went out and 191 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 2016-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 114 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2016-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 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
114 J/kg
Mixed-layer CIN
-348 J/kg
Mixed-layer LCL
1393 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

994 
WGUS53 KARX 221438
FFWARX
IAC005-WIC023-103-123-221800-
/O.NEW.KARX.FF.W.0057.160922T1438Z-160922T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
938 AM CDT THU SEP 22 2016

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ALLAMAKEE COUNTY IN NORTHEASTERN IOWA...
  CRAWFORD COUNTY IN SOUTHWESTERN WISCONSIN...
  VERNON COUNTY IN SOUTHWESTERN WISCONSIN...
  RICHLAND COUNTY IN SOUTHWESTERN WISCONSIN...

* UNTIL 100 PM CDT

* AT 935 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED ON GOING
  FLOODING AND OCCASIONAL MUDSLIDES...WITH ROCKS AND TREES FALLING
  ON AREA ROADS. WHILE MOST OF THE HEAVY RAIN HAS ENDED...IMPACTS
  WILL CONTINUE INTO THE AFTERNOON HOURS SO USE EXTREME CAUTION.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PRAIRIE DU CHIEN...LANSING...BOSCOBEL...LA FARGE...NEW ALBIN...
  AND HARPERS FERRY.

THIS EXTENDS THE PREVIOUS WARNING AND WILL LIKELY BE THE LAST FLASH
FLOOD WARNING FOR THIS AREA. AN AREAL FLOOD WARNING MAY BE NEEDED
FOR IMPACTS LATER IN THE DAY.

LAT...LON 4317 9020 4321 9029 4321 9055 4317 9069
      4312 9074 4306 9094 4299 9106 4299 9116
      4308 9118 4308 9160 4350 9161 4350 9122
      4358 9123 4361 9127 4373 9126 4373 9031
      4356 9031 4355 9019

$$

SHEA

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 7:06 PM CDTFlash Flood WarningARXClark5 hr
Sep 21, 11:11 PM CDTAreal Flood WarningARXLa Crosse3 hr
Sep 21, 11:55 PM CDTFlash Flood WarningARXClark6 hr
Sep 22, 12:48 AM CDTFlash Flood WarningARXCrawford, Richland, Vernon6 hr
Sep 22, 2:21 AM CDTRiver Flood WarningARXClark22 hr
Sep 22, 2:38 AM CDTRiver Flood WarningARXRichland, Vernon43 hr
Sep 22, 3:09 AM CDTAreal Flood WarningARXLa Crosse12 hr
Sep 22, 4:21 AM CDTRiver Flood WarningARXMonroe, Vernon29 hr
Sep 22, 5:28 AM CDTAreal Flood WarningARXClark24 hr
Sep 22, 6:51 AM CDTFlash Flood WarningARXCrawford, Richland, Vernon3 hr
Sep 22, 11:20 AM CDTRiver Flood WarningARXCrawford, Grant10 days
Sep 22, 11:20 AM CDTRiver Flood WarningARXGrant9 days
Sep 22, 12:58 PM CDTAreal Flood WarningARXCrawford, Richland, Vernon21 hr
Sep 21, 7:05 PM CDTFlash Flood WarningARXChickasaw5 hr
Sep 21, 7:11 PM CDTSevere Thunderstorm WarningARXFloyd49 min
Sep 21, 7:34 PM CDTTornado WarningARXFloyd41 min
Sep 21, 8:11 PM CDTFlash Flood Warning EmergencyARXFloyd8 hr
Sep 21, 8:44 PM CDTSpecial Weather StatementARXAllamakee, Winneshiek46 min
Sep 21, 9:19 PM CDTSpecial Weather StatementARXClayton, Fayette56 min
Sep 21, 10:13 PM CDTSpecial Weather StatementARXClayton, Fayette62 min
Sep 22, 12:04 AM CDTFlash Flood WarningARXChickasaw4 hr
Sep 22, 12:13 AM CDTSpecial Weather StatementARXAllamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek2 hr
Sep 22, 1:00 AM CDTFlash Flood WarningARXHoward, Mitchell, Winneshiek6 hr
Sep 22, 2:20 AM CDTFlash Flood WarningARXChickasaw, Fayette, Floyd6 hr
Sep 22, 3:55 AM CDTFlash Flood Warning EmergencyARXChickasaw, Floyd4 hr
Sep 22, 4:09 AM CDTFlash Flood WarningARXClayton6 hr
Sep 22, 4:53 AM CDTRiver Flood WarningARXMitchell3 days
Sep 22, 4:53 AM CDTRiver Flood WarningARXFloyd4 days
Sep 22, 5:39 AM CDTRiver Flood WarningARXAllamakee70 hr
Sep 22, 7:00 AM CDTAreal Flood WarningARXHoward, Mitchell, Winneshiek6 hr
Sep 22, 8:02 AM CDTFlash Flood WarningARXChickasaw, Fayette, Floyd5 hr
Sep 22, 9:00 AM CDTRiver Flood WarningARXClayton5 days
Sep 22, 9:00 AM CDTRiver Flood WarningARXClayton4 days
Sep 22, 10:19 AM CDTFlash Flood WarningARXClayton3 hr

Nearby

Flash Flood Warnings in Wisconsin, 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.