Alert archive / Wisconsin / Flash Flood Warnings in 2004

Flash Flood Warning 2, NWS Milwaukee, WI

May 9, 2004Racine County, Walworth County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at May 9, 2004, 12:10 AM CDT for Racine County, Walworth County, Wisconsin. It was in force for 95 min. 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 9, 2004, 12:10 AM CDT (05:10 UTC)
Expired: May 9, 2004, 1:45 AM CDT
In force: 95 min
Issued by: NWS Milwaukee, WI
Area: Counties, with a storm outline in the text

Counties Racine County, WI, Walworth County, WI

The radar

The Milwaukee radar (KMKX), 34 km from the middle of the area, began a volume at 05:10 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, 5.2 hours before the alert went out and 190 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: 499 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMKX 090512
FFWMKX
WIC101-127-090645-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1210 AM CDT SUN MAY 9 2004

THE NATIONAL WEATHER SERVICE IN MILWAUKEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  RACINE COUNTY IN SOUTHEAST WISCONSIN
  NORTHERN WALWORTH COUNTY IN SOUTHEAST WISCONSIN
  
* UNTIL 145 AM CDT

* AT 1205 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING HEAVY RAIN THAT WILL LIKELY CAUSE FLASH
  FLOODING NEAR LAGRANGE AND EAST TROY...EAST TOWARD RACINE...MOVING
  EAST AT 40 MPH.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO 
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4284 8871 4270 8872 4265 8745 4282 8755

$$
DAVIS
DAVIS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 7:44 PM CDT	Flash Flood Warning	MKX	Fond du Lac, Green Lake, Marquette, Sauk, Sheboygan	4 hr
May 8, 9:42 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	63 min
May 8, 10:04 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Waukesha	41 min
May 8, 10:14 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane	61 min
May 8, 10:22 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine, Walworth	53 min
May 8, 10:26 PM CDT	Special Marine Warning	MKX		94 min
May 8, 10:26 PM CDT	Special Marine Warning	MKX		94 min
May 8, 11:39 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine	51 min
May 8, 11:58 PM CDT	Special Marine Warning	MKX		92 min
May 8, 11:58 PM CDT	Special Marine Warning	MKX		92 min
May 9, 1:07 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock, Walworth, Waukesha	23 min
May 9, 1:12 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock, Walworth, Waukesha	18 min
May 9, 1:28 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Milwaukee, Walworth, Waukesha	47 min
May 9, 1:46 PM CDT	Special Marine Warning	MKX		59 min
May 9, 1:46 PM CDT	Special Marine Warning	MKX		59 min
May 9, 1:49 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Milwaukee, Racine	56 min
May 9, 2:01 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Racine, Waukesha	29 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.