Alert archive / Wisconsin / Flash Flood Warnings in 2000

Flash Flood Warning 7, NWS Green Bay, WI

August 15, 2000Marathon County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at Aug 15, 2000, 12:45 AM CDT for Marathon County, Wisconsin. It was in force for 4 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
Aug 15, 2000, 12:45 AM CDT (05:45 UTC)
Expired
Aug 15, 2000, 5:00 AM CDT
In force
4 hr
Issued by
NWS Green Bay, WI
Area
Whole counties

County Marathon County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 5.8 hours before the alert went out and 139 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 2000-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1190 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 2000-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
1190 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
666 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KGRB 150554
FFWGRB
WIC073-151000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
1245 AM CDT TUE AUG 15 2000

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN MARATHON COUNTY IN WISCONSIN

* UNTIL 500 AM CDT

* AT 1244 AM CDT NATIONAL WEATHER SERVICE RADAR DETECTED A LINE OF
  TRAINING THUNDERSTORMS WITH TORRENTIAL RAINS FROM NORTHERN 
  MARATHON COUNTY TO NORTHWEST WISCONSIN.  THE STORMS OVER NORTHWEST
  WISCONSIN WERE MOVING SOUTHEAST AT 25 MPH...TOWARD MARATHON
  COUNTY. 
 
* RADAR ESTIMATES INDICATE THAT UP TO 4 INCHES OF RAIN HAS FALLEN 
  OVER NORTHERN MARATHON COUNTY AS OF 1245 AM THIS MORNING.  
  THE MOVEMENT OF THE THUNDERSTORMS WILL RESULT IN MORE STORMS
  MOVING OVER THE SAME AREA WHICH HAS ALREADY EXPERIENCED HEAVY
  RAIN.  SOME LOCATIONS WHICH ARE AT HIGH RISK OF FLASH FLOODING 
  INCLUDE...HAMBURG...BROKAW AND HOGARTY. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND QUICKLY. DO NOT
ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY
FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT
IMMEDIATELY AND SEEK HIGHER GROUND.

TH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 7:21 PM CDTSevere Thunderstorm WarningGRBLincoln69 min
Aug 14, 7:57 PM CDTSevere Thunderstorm WarningGRBOneida, Vilas63 min
Aug 14, 8:06 PM CDTTornado WarningGRBOneida24 min
Aug 14, 8:23 PM CDTSevere Thunderstorm WarningGRBForest, Langlade67 min
Aug 14, 8:28 PM CDTSevere Thunderstorm WarningGRBLincoln47 min
Aug 14, 9:40 PM CDTSevere Thunderstorm WarningGRBMarathon80 min
Aug 14, 9:51 PM CDTSevere Thunderstorm WarningGRBShawano69 min
Aug 14, 10:31 PM CDTSevere Thunderstorm WarningGRBPortage, Wood59 min
Aug 14, 11:24 PM CDTSevere Thunderstorm WarningGRBWaupaca51 min
Aug 14, 11:33 PM CDTSevere Thunderstorm WarningGRBOutagamie57 min
Aug 14, 11:49 PM CDTSevere Thunderstorm WarningGRBWinnebago56 min
Aug 15, 12:03 AM CDTTornado WarningGRBWinnebago27 min
Aug 15, 12:10 AM CDTSevere Thunderstorm WarningGRBBrown, Calumet65 min
Aug 15, 12:34 AM CDTSevere Thunderstorm WarningGRBManitowoc41 min

Nearby

Flash Flood Warnings in Wisconsin, 2000Every flash flood warning in 2000

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.