Alert archive / Wisconsin / Flash Flood Warnings in 1997

Flash Flood Warning 10, NWS Milwaukee, WI

July 25, 1997Dane County, Jefferson County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at Jul 25, 1997, 9:17 PM CDT for Dane County, Jefferson 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 counties it named.

The facts

Issued
Jul 25, 1997, 9:17 PM CDT (02:17 UTC)
Expired
Jul 26, 1997, 12:00 AM CDT
In force
3 hr
Issued by
NWS Milwaukee, WI
Area
Whole counties

Counties Dane County, WI, Jefferson County, WI

The radar

The Milwaukee radar (KMKX), 45 km from the middle of the area, began a volume at 02:21 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, 2.3 hours before the alert went out and 179 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, Green Bay/Straub, WI at 00:00Z on 1997-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 738 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, Green Bay/Straub, WI at 00:00Z on 1997-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 193 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
738 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
543 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
193 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 260218
FFWMKE
WIC025-055-260515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
917 PM CDT FRI JUL 25 1997

* FLASH FLOOD WARNING FOR
  DANE COUNTY - SOUTH CENTRAL WISCONSIN
  JEFFERSON COUNTY - SOUTHEASTERN WISCONSIN

* UNTIL 1200 AM CDT
 
*SEVERAL REPORTS OF STREET AND ROAD FLOODING HAVE BEEN RECEIVED
  OVER NORTHEAST DANE COUNTY IN THE AREA OF SUN PRAIRIE.

* CAUSE AND EFFECT
  PERIODS OF THUNDERSTORMS WITH LOCALLY HEAVY RAIN WILL CONTINUE TO
  PERSIST OVER DANE AND JEFFERSON COUNTIES THROUGH MIDNIGHT. AS OF
  9PM WEATHER RADAR INDICATED THAT UP TO 2 INCHES OF RAIN HAS
  FALLEN OVER THE NORTHERN HALF OF DANE COUNTY AND WEST CENTRAL
  PARTS OF JEFFERSON COUNTY.

* FORECAST CONDITIONS
  AN ADDITIONAL 1 TO 3 INCHES OF RAINFALL MAY OCCUR AS ADDITIONAL
  STORMS WILL PASS THROUGH DANE AND JEFFERSON COUNTY THROUGH
  MIDNIGHT.

LEAVE FLOOD PRONE AND LOW LYING AREAS AND SEEK HIGH GROUND
IMMEDIATELY. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

TZ/JH

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jul 25, 8:50 PM CDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN
850 PM CDT FRI JUL 25 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0825 PM    WAUNAKEE                  WI   TORNADO
07/25/97   DANE                           FUNNEL CLOUD ON GROUND
                                          DEBRIS

0833 PM    4 N OF MADISON            WI   TORNADO
07/25/97   DANE                           SHERIFF REPORTS TORNADO ON
                                          GROUND.  ROTATING WALL
                                          CLOUD BY SPOTTERS

0839 PM    4 NE OF MADISON           WI   TORNADO
07/25/97   DANE                           HWY 51 AND HWY 19.  DEBRIS
                                          FALLING FROM SKY
HENTZ
Local storm report, Jul 25, 8:51 PM CDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN
850 PM CDT FRI JUL 25 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0825 PM    WAUNAKEE                  WI   TORNADO
07/25/97   DANE                           FUNNEL CLOUD ON GROUND
                                          DEBRIS

0833 PM    4 N OF MADISON            WI   TORNADO
07/25/97   DANE                           SHERIFF REPORTS TORNADO ON
                                          GROUND.  ROTATING WALL
                                          CLOUD BY SPOTTERS

0839 PM    4 NE OF MADISON           WI   TORNADO
07/25/97   DANE                           HWY 51 AND HWY 19.  DEBRIS
                                          FALLING FROM SKY
HENTZ

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 7:21 PM CDTSevere Thunderstorm WarningMKXDane, Dodge, Jefferson54 min
Jul 25, 7:31 PM CDTTornado WarningMKXDane, Jefferson29 min
Jul 25, 8:01 PM CDTTornado WarningMKXDane, Jefferson34 min
Jul 25, 8:21 PM CDTSevere Thunderstorm WarningMKXOzaukee, Sheboygan, Washington59 min
Jul 25, 8:28 PM CDTTornado WarningMKXDane, Jefferson32 min
Jul 25, 8:57 PM CDTTornado WarningMKXDane, Dodge, Jefferson63 min
Jul 25, 11:11 PM CDTSevere Thunderstorm WarningMKXOzaukee, Washington49 min
Jul 26, 3:50 PM CDTSevere Thunderstorm WarningMKXSauk40 min
Jul 26, 4:10 PM CDTSevere Thunderstorm WarningMKXColumbia65 min
Jul 26, 4:33 PM CDTSevere Thunderstorm WarningMKXDane, Jefferson57 min
Jul 26, 5:03 PM CDTSevere Thunderstorm WarningMKXDodge57 min
Jul 26, 5:27 PM CDTSevere Thunderstorm WarningMKXJefferson, Waukesha63 min
Jul 26, 5:35 PM CDTSevere Thunderstorm WarningMKXWalworth55 min
Jul 26, 5:41 PM CDTSevere Thunderstorm WarningMKXKenosha, Racine64 min
Jul 26, 5:41 PM CDTSevere Thunderstorm WarningMKXMilwaukee, Ozaukee, Washington64 min

Nearby

Flash Flood Warnings in Wisconsin, 1997Every flash flood warning in 1997

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.