Alert archive / Wisconsin / Flash Flood Warnings in 2014

Flash Flood Warning 9, NWS Milwaukee, WI

August 4, 2014Dane County, Iowa County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at Aug 4, 2014, 4:28 PM CDT for Dane County, Iowa 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
Aug 4, 2014, 4:28 PM CDT (21:28 UTC)
Expired
Aug 4, 2014, 7:30 PM CDT
In force
3 hr
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Flood severity
None

Counties Dane County, WI, Iowa County, WI

The radar

The Milwaukee radar (KMKX), 105 km from the middle of the area, began a volume at 21:30 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

Davenport, (KDVN), launched 12:00Z, 9.5 hours before the alert went out and 163 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 12:00Z on 2014-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 95 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 12:00Z on 2014-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.1939Sfc1 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
95 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1385 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
61 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.

193 
WGUS53 KMKX 042128
FFWMKX
WIC025-049-050030-
/O.NEW.KMKX.FF.W.0009.140804T2128Z-140805T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
428 PM CDT MON AUG 4 2014

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN DANE COUNTY IN SOUTH CENTRAL WISCONSIN...
  NORTHEASTERN IOWA COUNTY IN SOUTH CENTRAL WISCONSIN...

* UNTIL 730 PM CDT
    
* AT 426 PM CDT...DOPPLER RADAR INDICATED NUMEROUS THUNDERSTORMS 
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS 
  EXPECTED TO BEGIN SHORTLY. RADAR ESTIMATES OF 3 TO 4 INCHES HAVE 
  OCCURRED WITHIN THE PAST HOUR AND THESE THUNDERSTORMS ARE MOVING 
  OVER THE SAME AREAS VERY SLOWLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MOUNT HOREB...BARNEVELD...BLUE MOUNDS...RIDGEWAY...MOUNT VERNON...
  PINE BLUFF...GOVERNOR DODGE ST PARK AND BLUE MOUND ST PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 4309 8959 4286 8961 4286 8979 4298 8994
      4300 9025 4313 9013

$$
COLLAR
2 follow-up statements
827 
WGUS73 KMKX 042310
FFSMKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
610 PM CDT MON AUG 4 2014

WIC025-049-050030-
/O.CON.KMKX.FF.W.0009.000000T0000Z-140805T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DANE WI-IOWA WI-
610 PM CDT MON AUG 4 2014

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
SOUTHWESTERN DANE AND NORTHEASTERN IOWA COUNTIES...

AT 605 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS THAT PRODUCED 
HEAVY RAIN ACROSS THE WARNED AREA HAVE MOVED SOUTH...BUT MODERATE 
RAIN SHOWERS CONTINUE OVER THE WARNED AREA. NATIONAL WEATHER SERVICE 
DOPPLER RADAR ESTIMATES THREE TO FOUR INCHES OF RAIN HAVE FALLEN. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MOUNT HOREB...BARNEVELD...BLUE MOUNDS...RIDGEWAY...MOUNT VERNON...
PINE BLUFF...GOVERNOR DODGE ST PARK AND BLUE MOUND ST PARK.

ADDITIONAL RAINFALL AMOUNTS OF 1/2 INCH ARE POSSIBLE IN THE WARNED 
AREA. IF THE RAIN DIMINISHES FASTER THAN EXPECTED THE WARNING WILL 
BE CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN A LOW-LYING AREA BE PREPARED TO MOVE TO HIGHER GROUND. ACT 
QUICKLY TO PROTECT YOUR LIFE.

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

&&

LAT...LON 4309 8959 4286 8961 4286 8979 4298 8994
      4300 9025 4313 9013

$$

REM
538 
WGUS73 KMKX 050039
FFSMKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
739 PM CDT MON AUG 4 2014

WIC025-049-050048-
/O.EXP.KMKX.FF.W.0009.000000T0000Z-140805T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DANE WI-IOWA WI-
739 PM CDT MON AUG 4 2014

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN DANE AND NORTHEASTERN
IOWA COUNTIES HAS EXPIRED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT.

LAT...LON 4309 8959 4286 8961 4286 8979 4298 8994
      4300 9025 4313 9013

$$

REM

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 11:36 PM CDTSpecial Weather StatementMKXDodge24 min
Aug 4, 12:25 PM CDTSpecial Weather StatementMKXDodge35 min
Aug 4, 1:05 PM CDTAreal Flood AdvisoryMKXSauk55 min
Aug 4, 2:06 PM CDTSpecial Weather StatementMKXKenosha24 min
Aug 4, 3:05 PM CDTAreal Flood AdvisoryMKXDane55 min
Aug 4, 3:49 PM CDTSpecial Weather StatementMKXDane26 min
Aug 4, 4:15 PM CDTAreal Flood AdvisoryMKXDane, Iowa2 hr
Aug 4, 4:46 PM CDTSpecial Weather StatementMKXIowa59 min

Nearby

Flash Flood Warnings in Wisconsin, 2014Every flash flood warning in 2014

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.