Alert archive / Wisconsin / Flash Flood Warnings in 2001

Flash Flood Warning 4, NWS Milwaukee, WI

August 2, 2001Columbia County, Sauk County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at Aug 2, 2001, 5:15 AM CDT for Columbia County, Sauk 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Aug 2, 2001, 5:15 AM CDT (10:15 UTC)
Expired: Aug 2, 2001, 8:15 AM CDT
In force: 3 hr
Issued by: NWS Milwaukee, WI
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Columbia County, WI, Sauk County, WI

The radar

The Milwaukee radar (KMKX), 104 km from the middle of the area, began a volume at 10:15 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, 10.3 hours before the alert went out and 165 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: 67 J/kg
Mixed-layer CIN: -223 J/kg
Mixed-layer LCL: 1342 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMKX 021019
FFWMKE

WIC021-111-021315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
515 AM CDT THU AUG 2 2001

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SAUK COUNTY IN SOUTH CENTRAL WISCONSIN
  WESTERN COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN

* UNTIL 815 AM CDT

* AT 515 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN WAS OCCURRING OVER MUCH OF THE WARNING AREA.

* WEATHER SERVICE DOPPLER RADAR ESTIMATES ARE THAT 1 TO 11/2 INCH
  OF RAINFALL FELL DURING THE PAST 2 HOURS. THIS RAIN...ON TOP OF
  WIDESPREAD 3 TO 6 INCHES OF RAIN THAT HAS ALREADY FALLEN DURING
  THE PAST 12 HOURS...WILL CONTINUE TO CAUSE FLASH FLOODING. 
  
BE ESPECIALLY CAUTIOUS IN LIMITED DAYLIGHT WHEN IT IS HARDER TO RECOGNIZE 
THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS 
OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD 
WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS 
RISING.

TOTAL RAINFALL AMOUNTS IN SOME AREAS ARE LIKELY TO APPROACH 8 INCHES.

LAT...LON 4363 8929 4332 8929 4322 9009 4361 9016

DAVIS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 2:04 AM CDT	Flash Flood Warning	MKX	Columbia, Sauk	3 hr
Aug 2, 3:40 AM CDT	Flash Flood Warning	MKX	Dane	4 hr
Aug 2, 4:07 AM CDT	Flash Flood Warning	MKX	Iowa	4 hr

Nearby

Flash Flood Warnings in Wisconsin, 2001 Every flash flood warning in 2001

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.