Alert archive / Wisconsin / Flash Flood Warnings in 2006

Flash Flood Warning 2, NWS Green Bay, WI

May 30, 2006Marathon County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at May 30, 2006, 5:30 PM CDT for Marathon County, Wisconsin. It was in force for 90 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: May 30, 2006, 5:30 PM CDT (22:30 UTC)
Expired: May 30, 2006, 7:00 PM CDT
In force: 90 min
Issued by: NWS Green Bay, WI
Area: Counties, with a storm outline in the text
Flood severity: None

County Marathon County, WI

The radar

The Green Bay radar (KGRB), 143 km from the middle of the area, began a volume at 22:31 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 12:00Z, 10.5 hours before the alert went out and 145 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: 1057 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1203 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 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 302232
FFWGRB
WIC073-310000-
/O.NEW.KGRB.FF.W.0002.060530T2230Z-060531T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
530 PM CDT TUE MAY 30 2006

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

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

* UNTIL 700 PM CDT

* AT 526 PM...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING FROM A
  THUNDERSTORM NEAR MOSINEE...OR ABOUT 12 MILES SOUTHWEST OF         
  WAUSAU...MOVING NORTHEAST AT 5 MPH. WATER WAS REPORTED ONE FOOT    
  DEEP IN THE TOWN OF MOSINEE. 

* THE THUNDERSTORM PRODUCING FLASH FLOODING WILL BE NEAR...
  RIB MOUNTAIN BY 615 PM...
  WESTON BY 630 PM...
  WAUSAU BY 645 PM...

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE LIKELY IN THE WARNED
AREA.

THE VERY SLOW MOVEMENT OF THE THUNDERSTORMS WILL SIGNIFICANTLY
INCREASE THE RISK OF FLASH FLOODING.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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.

LAT...LON 4474 9015 4469 8972 4511 8933 4512 8985

$$

KALLAS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 9:21 AM CDT	Marine Weather Statement	GRB		84 min
May 30, 12:22 PM CDT	Marine Weather Statement	GRB		53 min
May 30, 1:04 PM CDT	Tornado Warning	GRB	Menominee	26 min

Nearby

Flash Flood Warnings in Wisconsin, 2006 Every flash flood warning in 2006

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.