Alert archive / Wisconsin / Flash Flood Warnings in 1998

Flash Flood Warning 2, NWS Green Bay, WI

June 27, 1998Marathon County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at Jun 27, 1998, 1:03 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
Jun 27, 1998, 1:03 AM CDT (06:03 UTC)
Expired
Jun 27, 1998, 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, 6.1 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 1998-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1537 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 1998-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
1537 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
866 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KGRB 270602
FFWGRB
WIC073-271000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
103 AM CDT SAT JUN 27 1998

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

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

* UNTIL 500 AM CDT

* AT 1255 AM...LOCAL LAW ENFORCEMENT REPORTED SOME STREET FLOODING
  IN AND AROUND THE SPENCER AREA...OR 35 MILES SOUTHWEST OF WAUSAU.
  DITCHES IN THAT AREA WERE ALSO REPORTED TO BE FULL.

* NUMEROUS THUNDERSTORMS CONTAINING TORRENTIAL RAINS WILL CONTINUE
  ACROSS MARATHON COUNTY THROUGH THE NIGHT...AND THIS ADDITIONAL
  RAIN WILL ONLY CREATE MORE FLOODING.

IF FLOODING IS OCCURRING...MOVE TO HIGHER GROUND. DO NOT DRIVE THROUGH
WATER COVERING THE ROAD.

ISAACSON/SKOWRONSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 11:06 PM CDTSevere Thunderstorm WarningGRBWood59 min
Jun 26, 11:58 PM CDTSevere Thunderstorm WarningGRBOutagamie62 min
Jun 27, 12:05 AM CDTSevere Thunderstorm WarningGRBMarathon65 min
Jun 27, 12:43 AM CDTFlash Flood WarningGRBWood4 hr
Jun 27, 1:11 AM CDTSevere Thunderstorm WarningGRBWood64 min
Jun 27, 1:30 AM CDTFlash Flood WarningGRBPortage, Waupaca4 hr
Jun 27, 1:33 AM CDTSevere Thunderstorm WarningGRBPortage, Waushara62 min
Jun 27, 1:53 AM CDTFlash Flood WarningGRBBrown, Outagamie3 hr

Nearby

Flash Flood Warnings in Wisconsin, 1998Every flash flood warning in 1998

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.