Alert archive / Wisconsin / Flash Flood Warnings in 2002

Flash Flood Warning 12, NWS Green Bay, WI

June 25, 2002Marathon County, Wood County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at Jun 25, 2002, 10:50 PM CDT for Marathon County, Wood County, Wisconsin. It was in force for 85 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 25, 2002, 10:50 PM CDT (03:50 UTC)
Expired: Jun 26, 2002, 12:15 AM CDT
In force: 85 min
Issued by: NWS Green Bay, WI
Area: Counties, with a storm outline in the text

Counties Marathon County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 135 km from the middle of the area, began a volume at 03:51 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, 3.8 hours before the alert went out and 160 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1651 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1570 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 38 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 260350
FFWGRB
WIC073-141-260515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
1050 PM CDT TUE JUN 25 2002

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

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

* UNTIL 1215 AM CDT

* AT 1048 PM NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED   
THUNDERSTORMS WITH TORRENTIAL RAIN OVER CENTRAL WISCONSIN. THE 
STORMS WERE MOVING EAST AT 40 MPH...AND WILL AFFECT SOUTHWEST 
MARATHON COUNTY AND NORTHERN WOOD COUNTY.

* RADAR ESTIMATES INDICATED THAT UP TO 1.5 INCHES OF RAIN IS 
EXPECTED WITH THE STORMS.  THIS RAIN ON WATER SOAKED GROUND WILL 
QUICKLY CAUSE ADDITIONAL FLOODING.

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.

LAT...LON 4498 9032 4483 9031 4439 9031 4437 8984
          4466 8985 4498 8968

JKL

1 follow-up statement

000 
RWUS32 KGRB 260427
FFSGRB
WIC073-141-260530-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1123 PM CDT TUE JUN 25 2002

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR PARTS OF CENTRAL 
WISCONSIN...

AT 1125 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
SHOW THUNDERSTORMS WITH TORRENTIAL RAIN ACROSS CENTRAL WISCONSIN.  
THE STORMS WILL CONTINUE TO PRODUCE HEAVY RAIN ACROSS MARATHON AND 
WOOD COUNTIES.  A FLASH FLOOD WARNING REMAINS IN EFFECT FOR 
SOUTHWEST MARATHON AND NORTHERN WOOD COUNTIES UNTIL 1215 AM.

ANOTHER INCH OF RAIN IS LIKELY IN THIS AREA OVERNIGHT.  

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODS.  IF FLOODING IS OBSERVED...MOVE TO HIGHER GROUND 
TO ESCAPE FLOOD WATERS.  DO NOT STAY IN AREAS SUBJECT TO FLOODING 
WHEN WATER BEGINS RISING.

$$
JKL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 9:25 PM CDT	Severe Thunderstorm Warning	GRB	Oneida	65 min
Jun 25, 9:48 PM CDT	Severe Thunderstorm Warning	GRB	Oneida	42 min
Jun 25, 10:02 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln	58 min
Jun 25, 10:19 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Wood	56 min
Jun 25, 10:43 PM CDT	Tornado Warning	GRB	Marathon	32 min
Jun 25, 11:19 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	56 min
Jun 26, 12:40 AM CDT	Special Marine Warning	GRB		110 min
Jun 26, 12:40 AM CDT	Special Marine Warning	GRB		110 min
Jun 26, 12:40 AM CDT	Special Marine Warning	GRB		110 min
Jun 26, 12:40 AM CDT	Special Marine Warning	GRB		110 min
Jun 26, 3:35 PM CDT	Special Marine Warning	GRB		70 min
Jun 26, 4:48 PM CDT	Special Marine Warning	GRB		72 min
Jun 26, 4:48 PM CDT	Special Marine Warning	GRB		72 min
Jun 26, 5:50 PM CDT	Special Marine Warning	GRB		85 min
Jun 26, 5:50 PM CDT	Special Marine Warning	GRB		85 min
Jun 26, 5:50 PM CDT	Special Marine Warning	GRB		85 min
Jun 26, 6:38 PM CDT	Severe Thunderstorm Warning	GRB	Manitowoc	37 min

Nearby

Flash Flood Warnings in Wisconsin, 2002 Every 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.