Alert archive / Wisconsin / Flash Flood Warnings in 2004

Flash Flood Warning 15, NWS La Crosse, WI

May 22, 2004Grant County, Wisconsin

NWS La Crosse, WI issued this flash flood warning at May 22, 2004, 12:30 AM CDT for Grant County, Wisconsin. 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 as issued.

The facts

Issued: May 22, 2004, 12:30 AM CDT (05:30 UTC)
Expired: May 22, 2004, 3:30 AM CDT
In force: 3 hr
Issued by: NWS La Crosse, WI
Area: Counties, with a storm outline in the text

County Grant County, WI

The radar

The La Crosse radar (KARX), 115 km from the middle of the area, began a volume at 05:30 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.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 5.5 hours before the alert went out and 278 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 542 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 418 m²/s²
0-3 km storm-relative helicity: 649 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 220529
FFWARX
WIC043-220830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
1230 AM CDT SAT MAY 22 2004

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GRANT COUNTY IN SOUTHWEST WISCONSIN

* UNTIL 330 AM CDT

* AT 1226 AM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED
  THUNDERSTORMS PRODUCING MODERATE TO HEAVY RAINS ALL ACROSS THE
  COUNTY. EMERGENCY MANAGEMENT OFFICIALS REPORT MINOR FLOODING IN 
  THE BOSCOBEL AND BAGLEY AREAS. THE STORMS PRODUCING THE VERY HEAVY
  RAINFALL WERE MOVING EAST AT 40 MPH. ADDITIONAL THUNDERSTORMS WERE
  DEVELOPING ACROSS NORTH CENTRAL IOWA WHICH MAY AFFECT THE AREA
  LASTER TONIGHT. THIS WARNING EXTENDS THE PREVIOUS FLASH FLOOD 
  WARNING ISSUED FOR GRANT COUNTY.

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...BLOOMINGTON...
  DICKEYVILLE...FENNIMORE...PLATTEVILLE AND HIGHWAY 61 AND COUNTY T.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4299 9106 4280 9098 4254 9056 4260 9045
          4283 9047 4320 9045

$$

RABERDING

&

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 8:40 PM CDT	Flash Flood Warning	ARX	Crawford, Richland, Vernon	3 hr
May 21, 9:38 PM CDT	Flash Flood Warning	ARX	Grant	3 hr
May 21, 11:44 PM CDT	Flash Flood Warning	ARX	Crawford, Richland, Vernon	3 hr
May 22, 2:54 AM CDT	Severe Thunderstorm Warning	ARX	Grant	66 min

Nearby

Flash Flood Warnings in Wisconsin, 2004 Every flash flood warning in 2004

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; radar from the NEXRAD Level II archive.