Alert archive / Wisconsin / Flash Flood Warnings in 2002

Flash Flood Warning 4, NWS Green Bay, WI

May 8, 2002Florence County, Forest County, Langlade County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at May 8, 2002, 11:28 PM CDT for Florence County, Forest County, Langlade 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
May 8, 2002, 11:28 PM CDT (04:28 UTC)
Expired
May 9, 2002, 2:30 AM CDT
In force
3 hr
Issued by
NWS Green Bay, WI
Area
Whole counties

Counties Florence County, WI, Forest County, WI, Langlade County, WI

The radar

The Green Bay radar (KGRB), 131 km from the middle of the area, began a volume at 04:31 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, 4.5 hours before the alert went out and 134 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 2002-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2002-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
660 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
281 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.

000 
WGUS53 KGRB 090428
FFWGRB
WIC037-041-067-090730-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
1121 PM CDT WED MAY 8 2002

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LANGLADE COUNTY IN WISCONSIN
  FLORENCE COUNTY IN WISCONSIN
  FOREST COUNTY IN WISCONSIN

* UNTIL 230 AM CDT

* AT 1121 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS WITH TORRENTIAL RAIN. THE STORMS EXTENDED FROM
  ANTIGO TO TO CRANDON TO IRON MOUNTAIN.  THE STORMS WERE MOVING
  NORTHEAST AT 20 MPH.

* RADAR ESTIMATES INDICATED THAT UP TO 3 INCHES OF RAIN HAD FALLEN IN
  PARTS OF THIS AREA.  SPOTTERS IN THE AREA HAVE OBSERVED TORRENTIAL
  RAINFALL.  MOVEMENT OF THE STORMS WILL RESULT IN MORE RAIN FALLING
  OVER AREAS WHICH ALREADY RECEIVED HEAVY RAIN. ANOTHER 1 TO 2
  INCHES OF RAIN IS LIKELY IN THIS AREA. SOME LOCATIONS WHICH
  ARE AT HIGH RISK OF FLASH FLOODING...ELCHO...CRANDON...LAONA...AND
  FLORENCE. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. 

HELMAN
2 follow-up statements
000 
RWUS32 KGRB 090545
FFSGRB
WIC037-041-067-090730-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1240 AM CDT THU MAY 9 2002

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR FOREST...FLORENCE AND
LANGLADE COUNTIES...

AT 1240 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
THUNDERSTORMS WITH TORRENTIAL RAIN. THE STORMS EXTENDED FROM 
WAUSAU...TO SUMMIT LAKE...TO CRANDON TO IRON MOUNTAIN.  THE STORMS 
WERE MOVING NORTHEAST AT 20 MPH.  ALTHOUGH THE STORMS ARE GRADUALLY 
WEAKENING...A FEW OF THE STORMS MAY CONTINUE TO PRODUCE HEAVY RAIN. 
A FLASH FLOOD WARNING IS IN EFFECT.

UP TO 3 INCHES OF RAIN HAD FALLEN IN THIS AREA...WITH ADDITIONAL 
RAINFALL THROUGH 200 AM THIS MORNING.  DO NOT DRIVE OVER ROADS 
COVERED WITH WATER. 

$$

HELMAN
000 
RWUS32 KGRB 090601
FFSGRB
WIC037-041-067-090630-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
100 AM CDT THU MAY 9 2002

...FLASH FLOOD WARNING CANCELED...

WEATHER SERVICE RADAR INDICATED THUNDERSTORMS WERE WEAKENING OVER THE
AREA.  AS A RESULT THE THREAT OF FLASH FLOODING HAS DIMINISHED. THE
FLASH FLOOD WARNING HAS BEEN CANCELED FOR FOREST...FLORENCE AND LANGLADE
COUNTIES.  AS OF 100 AM...THERE HAVE BEEN NO REPORTS OF FLASH FLOODING.
$$
HELMAN
WWW.CRH.NOAA.GOV/GRB

Nearby

Flash Flood Warnings in Wisconsin, 2002Every flash flood warning in 2002

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.