Alert archive / Iowa / Flash Flood Warnings in 2000

Flash Flood Warning 25, NWS La Crosse, WI

July 10, 2000Allamakee County, Clayton County, Fayette County, Iowa; Houston County, Minnesota

NWS La Crosse, WI issued this flash flood warning at Jul 10, 2000, 1:38 AM CDT for Allamakee County, Clayton County, Fayette County, Iowa; Houston County, Minnesota. 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 10, 2000, 1:38 AM CDT (06:38 UTC)
Expired
Jul 10, 2000, 4:30 AM CDT
In force
3 hr
Issued by
NWS La Crosse, WI
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Allamakee County, IA, Clayton County, IA, Fayette County, IA, Houston County, MN

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 6.6 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.

Skew-T log-pSkew-T log-p diagram, Davenport, at 00:00Z on 2000-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2939 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 00:00Z on 2000-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
2939 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1086 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KARX 100640
FFWARX
IAC005-043-065-MNC055-100930-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
138 AM CDT MON JUL 10 2000

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ALLAMAKEE COUNTY IN NORTHEAST IOWA
  FAYETTE COUNTY IN NORTHEAST IOWA
  CLAYTON COUNTY IN NORTHEAST IOWA
  HOUSTON COUNTY IN SOUTHEAST MINNESOTA

* UNTIL 430 AM CDT

* AT 138 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ACROSS MUCH OF THE WARNED
  AREA.

* SOME LOCATIONS WHICH MAY BE AFFECTED INCLUDE...
  HOUSTON
  CALEDONIA
  WAUKON
  POSTVILLE
  MONONA

DUE TO HEAVY RAINFALL FROM YESTERDAY...COUPLED ALONG WITH A
POTENTIAL FOR AN ADDITIONAL 1 TO 2 INCHES WITH THE CURRENT
STORMS...FLASH FLOODING WILL BE LIKELY ACROSS PORTIONS OF THE WARNED
COUNTIES.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO FORGE
FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. IF YOUR VEHICLE STALLS...
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.

RIECK

LAT...LON 4373 9140 4272 9121 4272 9196 4322 9157
          4376 9163

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 12:06 AM CDTSevere Thunderstorm WarningARXMitchell69 min
Jul 10, 12:10 AM CDTSevere Thunderstorm WarningARXFloyd65 min
Jul 10, 12:36 AM CDTFlash Flood WarningARXChickasaw, Floyd, Howard, Mitchell3 hr
Jul 10, 12:36 AM CDTSevere Thunderstorm WarningARXChickasaw, Howard54 min
Jul 10, 1:00 AM CDTFlash Flood WarningARXWinneshiek3 hr
Jul 10, 1:03 AM CDTSevere Thunderstorm WarningARXFayette, Winneshiek42 min
Jul 10, 1:33 AM CDTSevere Thunderstorm WarningARXAllamakee, Clayton57 min
Jul 10, 12:18 AM CDTFlash Flood WarningARXFillmore, Mower, Olmsted3 hr
Jul 10, 1:53 AM CDTFlash Flood WarningARXDodge3 hr
Jul 10, 2:55 AM CDTFlash Flood WarningARXFillmore4 hr
Jul 10, 7:00 AM CDTFlash Flood WarningARXFillmore5 hr

Nearby

Flash Flood Warnings in Iowa, 2000Flash Flood Warnings in Minnesota, 2000Every flash flood warning in 2000

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.