Alert archive / Wisconsin / Flash Flood Warnings in 2002

Flash Flood Warning 1, NWS Green Bay, WI

April 18, 2002Oneida County, Vilas County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at Apr 18, 2002, 5:29 PM CDT for Oneida County, Vilas County, Wisconsin. It was in force for 91 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: Apr 18, 2002, 5:29 PM CDT (22:29 UTC)
Expired: Apr 18, 2002, 7:00 PM CDT
In force: 91 min
Issued by: NWS Green Bay, WI
Area: Counties, with a storm outline in the text

Counties Oneida County, WI, Vilas County, WI

The radar

The Marquette radar (KMQT), 178 km from the middle of the area, began a volume at 22:30 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.5 hours before the alert went out and 190 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1774 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 460 m²/s²
0-3 km storm-relative helicity: 766 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KGRB 182229
FFWGRB
WIC085-125-190000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
527 PM CDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ONEIDA COUNTY IN WISCONSIN
  VILAS COUNTY IN WISCONSIN

* UNTIL 700 PM CDT

* AT 527 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS WITH TORRENTIAL RAIN. THE STORMS WERE CENTERED NEAR
  RHINELANDER. THE STORMS WERE MOVING NORTHEAST AT 15 MPH.

* RADAR ESTIMATES INDICATED THAT UP TO 3 INCHES OF RAIN HAD FALLEN IN
  THIS AREA. THE VERY SLOW MOVEMENT OF THE THUNDERSTORMS WILL
  SIGNIFICANTLY INCREASE THE RISK OF FLASH FLOODING. ANOTHER 1 TO 2
  INCHES OF RAIN IS LIKELY IN THIS AREA. SOME LOCATIONS WHICH ARE AT
  HIGH RISK OF FLASH FLOODING INCLUDE...THREE LAKES...ARBOR VITAE...
  BOULDER JUNCTION...CLEARWATER LAKE AND CONOVER.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 4556 9004 4553 8904 4613 8904 4631 8992

KALLAS

2 follow-up statements

000 
RWUS32 KGRB 182302
FFSGRB
WIC085-125-190000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
600 PM CDT THU APR 18 2002

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR VILAS AND ONEIDA
COUNTIES...

AT 600 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
THUNDERSTORMS WITH TORRENTIAL RAIN. THE STRONGEST STORM WAS NEAR 
STARKS...OR 14 MILES EAST OF RHINELANDER. OTHER THUNDERSTORMS WERE 
LOCATED OVER NORTHWEST AND WESTERN WISCONSIN. THE INDIVIDUAL STORMS 
WERE MOVING NORTHEAST AT 45 MPH...WHILE THE ENTIRE AREA WAS MOVING 
TO THE EAST AT 20 MPH. THE STORMS WILL CONTINUE TO PRODUCE HEAVY 
RAIN. A FLASH FLOOD WARNING IS IN EFFECT.

RADAR ESTIMATES INDICATED THAT UP TO 3 INCHES OF RAIN HAD FALLEN IN
THIS AREA. ANOTHER 1 TO 2 INCHES OF RAIN IS LIKELY IN THIS AREA. SOME
LOCATIONS WHICH ARE AT HIGH RISK OF FLASH FLOODING INCLUDE...ARBOR
VITAE...BOULDER JUNCTION...CLEARWATER LAKE...CONOVER AND EAGLE RIVER.

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.

$$

KALLAS

000 
RWUS32 KGRB 182334
FFSGRB
WIC085-125-190000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
630 PM CDT THU APR 18 2002

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR VILAS AND ONEIDA
COUNTIES...

AT 630 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
THUNDERSTORMS WITH TORRENTIAL RAIN. THE STRONGEST STORM WAS NEAR ST 
GERMAIN...OR 13 MILES WEST OF EAGLE RIVER. OTHER THUNDERSTORMS WERE 
LOCATED ACROSS PRICE AND LINCOLN COUNTIES. THE INDIVIDUAL STORMS 
WERE MOVING NORTHEAST AT 45 MPH...WHILE THE ENTIRE AREA WAS MOVING 
TO THE EAST AT 20 MPH. THE STORMS WILL CONTINUE TO PRODUCE HEAVY 
RAIN. A FLASH FLOOD WARNING REMAINS IN EFFECT.

RADAR ESTIMATES INDICATED THAT UP TO 4 INCHES OF RAIN HAD FALLEN 
OVER SOUTHERN ONEIDA COUNTY. WIDESPREAD FLOODING HAS BEEN REPORTED 
IN THE CITY OF RHINELANDER. THE 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 THE WARNING AREA. SOME
LOCATIONS WHICH ARE AT HIGH RISK OF FLASH FLOODING 
INCLUDE...CONOVER...ARBOR VITAE...BOULDER JUNCTION...CLEARWATER LAKE 
AND EAGLE RIVER.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

$$

KALLAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 7:17 AM CDT	Special Marine Warning	GRB		58 min
Apr 18, 7:17 AM CDT	Special Marine Warning	GRB		58 min
Apr 18, 1:30 PM CDT	Severe Thunderstorm Warning	GRB	Waupaca, Waushara	30 min
Apr 18, 1:33 PM CDT	Severe Thunderstorm Warning	GRB	Waupaca, Waushara	27 min
Apr 18, 2:22 PM CDT	Severe Thunderstorm Warning	GRB	Oconto	38 min
Apr 18, 3:53 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida	37 min
Apr 18, 4:19 PM CDT	Severe Thunderstorm Warning	GRB	Vilas	41 min
Apr 18, 4:29 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida	46 min
Apr 18, 4:34 PM CDT	Tornado Warning	GRB	Lincoln, Oneida	41 min
Apr 18, 4:57 PM CDT	Severe Thunderstorm Warning	GRB	Vilas	63 min
Apr 18, 5:07 PM CDT	Severe Thunderstorm Warning	GRB	Waushara, Winnebago	53 min
Apr 18, 5:15 PM CDT	Tornado Warning	GRB	Oneida	45 min
Apr 18, 5:16 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida	59 min
Apr 18, 5:33 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	57 min
Apr 18, 5:53 PM CDT	Tornado Warning	GRB	Forest	37 min
Apr 18, 6:26 PM CDT	Severe Thunderstorm Warning	GRB	Florence, Forest	49 min
Apr 18, 6:30 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Wood	60 min
Apr 18, 6:50 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	40 min
Apr 18, 6:50 PM CDT	Tornado Warning	GRB	Oneida, Vilas	40 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.