Alert archive / Wisconsin / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS Green Bay, WI

June 12, 2008Calumet County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at Jun 12, 2008, 6:19 PM CDT for Calumet County, Wisconsin. It was in force for 3 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 12, 2008, 6:19 PM CDT (23:19 UTC)
Expired: Jun 12, 2008, 9:15 PM CDT
In force: 3 hr
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Flood severity: None

County Calumet County, WI

The radar

The Green Bay radar (KGRB), 53 km from the middle of the area, began a volume at 23:19 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.

What was reported inside it

Time	Report	Where	Remark
Jun 12, 6:22 PM CDT	HEAVY RAIN 1.3	Chilton, WI	SINCE 6PM.
Jun 12, 6:25 PM CDT	FLASH FLOOD	Quinney, WI	NORTHBOUND HWY 55 ARE COVERED IN WATER. TRAFFIC MOVING VERY SLOWLY.
Jun 12, 6:49 PM CDT	FLASH FLOOD	Brillion, WI	8 INCHES OF WATER OVER ROADWAY AT HWY PP AND ORANGE ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.3 hours before the alert went out and 51 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: 1473 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KGRB 122321
FFWGRB
WIC015-130215-
/O.NEW.KGRB.FF.W.0002.080612T2319Z-080613T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
619 PM CDT THU JUN 12 2008

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CALUMET COUNTY IN EAST CENTRAL WISCONSIN...

* UNTIL 915 PM CDT

* AT 615 PM...DOPPLER RADAR INDICATED A CLUSTER OF SLOW MOVING 
  THUNDERSTORMS CAPABLE OF PRODUCING FLASH FLOODING OVER THE 
  WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  NEW HOLSTEIN AND CHILTON.

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

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.

LAT...LON 4392 8817 4393 8818 4392 8827 4393 8839
      4424 8836 4425 8832 4423 8804 4391 8806
TIME...MOT...LOC 2319Z 271DEG 0KT 4416 8832 4395 8826

$$

HELMAN

1 follow-up statement

000 
WGUS73 KGRB 130013
FFSGRB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
712 PM CDT THU JUN 12 2008

WIC015-130215-
/O.CON.KGRB.FF.W.0002.000000T0000Z-080613T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CALUMET-
712 PM CDT THU JUN 12 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
CALUMET COUNTY...

AT 711 PM...VARIOUS REPORTS FROM THE PUBLIC REPORT WATER ON CITY 
STREETS AND COUNTY ROADS UP TO 8 INCHES IN DEPTH.   

ANOTHER INCH IS LIKELY IN THE WARNED AREA THIS EVENING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4392 8817 4393 8818 4392 8827 4393 8839
      4424 8836 4425 8832 4423 8804 4391 8806
TIME...MOT...LOC 0012Z 180DEG 0KT 4416 8832 4395 8826

$$

HELMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 8:50 AM CDT	River Flood Advisory	GRB	Outagamie, Winnebago	3 days
Jun 12, 4:22 PM CDT	Areal Flood Advisory	GRB	Waushara, Winnebago	96 min
Jun 12, 4:34 PM CDT	Severe Thunderstorm Warning	GRB	Winnebago	56 min
Jun 12, 5:01 PM CDT	Flash Flood Warning	GRB	Winnebago	4 hr
Jun 12, 5:02 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Manitowoc	47 min
Jun 12, 5:15 PM CDT	Special Marine Warning	GRB		2 hr
Jun 12, 5:23 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Shawano	24 min
Jun 12, 5:39 PM CDT	Severe Thunderstorm Warning	GRB	Florence, Forest, Marinette, Oconto	49 min
Jun 12, 5:42 PM CDT	Areal Flood Advisory	GRB	Calumet, Manitowoc	3 hr
Jun 12, 6:30 PM CDT	Flash Flood Warning	GRB	Manitowoc	3 hr
Jun 12, 6:35 PM CDT	Tornado Warning	GRB	Manitowoc	40 min
Jun 12, 6:53 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Kewaunee, Manitowoc	51 min

Nearby

Flash Flood Warnings in Wisconsin, 2008 Every flash flood warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.