Alert archive / Wisconsin / Flash Flood Warnings in 2016

Flash Flood Warning 1, NWS Green Bay, WI

September 21, 2016Wood County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at Sep 21, 2016, 8:04 PM CDT for Wood County, Wisconsin. It was in force for 4 hr. 1 report 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: Sep 21, 2016, 8:04 PM CDT (01:04 UTC)
Expired: Sep 22, 2016, 12:00 AM CDT
In force: 4 hr
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Flood severity: None

County Wood County, WI

The radar

The La Crosse radar (KARX), 121 km from the middle of the area, began a volume at 01:03 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
Sep 21, 9:45 PM CDT	FLASH FLOOD	5 Sw Marshfield, WI	ROAD CLOSED. ROBIN ROAD BETWEEN HIGHWAY 10 AND MACARTHER DRIVE.

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 00:00Z, 1.1 hours before the alert went out and 152 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: 2148 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: -43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

295 
WGUS53 KGRB 220104
FFWGRB
WIC141-220500-
/O.NEW.KGRB.FF.W.0001.160922T0104Z-160922T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
804 PM CDT WED SEP 21 2016

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

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

* UNTIL MIDNIGHT CDT.

* AT 758 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN WILL CONTINUE TO MOVE ACROSS THE COUNTY...ESPECIALLY
  OVER SOUTHERN AND WESTERN AREAS OF THE COUNTY WHERE FLASH FLOODING
  MAY BEGIN SHORTLY.  BETWEEN 1 TO 3 INCHES OF RAIN HAS FALLEN OVER
  SOUTHWEST WOOD COUNTY TODAY...WITH AN ADDITIONAL 2 TO 3 INCHES
  EXPECTED THIS EVENING OVER THE SOUTHWEST HALF OF THE COUNTY.  

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MARSHFIELD...PITTSVILLE...BABCOCK...NEKOOSA AND PORT EDWARDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4469 9031 4468 8985 4451 8984 4451 8973
      4425 8973 4425 9032

$$

TDH

2 follow-up statements

837 
WGUS73 KGRB 220313
FFSGRB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1013 PM CDT WED SEP 21 2016

WIC141-220500-
/O.CON.KGRB.FF.W.0001.000000T0000Z-160922T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WOOD WI-
1013 PM CDT WED SEP 21 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
WOOD COUNTY...

AT 1009 PM CDT...LOCAL LAW ENFORCEMENT REPORTED ROBIN ROAD SOUTH OF
HIGHWAY 10 SOUTHWEST OF MARSHFIELD IS CLOSED.  THUNDERSTORMS WHICH
PRODUCED HEAVY RAIN HAVE DIMINISHED SINCE 9 PM.  MORE THUNDERSTORMS
WERE DEVELOPING OVER EAST CENTRAL MINNESOTA AND MAY WORK INTO THE
AREA LATE TONIGHT.  AREA RIVER AND STREAMS WERE RISING IN WOOD
COUNTY.  

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MARSHFIELD...PITTSVILLE AND BABCOCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4469 9031 4468 8985 4451 8984 4451 8973
      4425 8973 4425 9032

$$

TDH

042 
WGUS73 KGRB 220351
FFSGRB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1051 PM CDT WED SEP 21 2016

WIC141-220359-
/O.CAN.KGRB.FF.W.0001.000000T0000Z-160922T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WOOD WI-
1051 PM CDT WED SEP 21 2016

...THE FLASH FLOOD WARNING FOR WOOD COUNTY IS CANCELLED...

THE HEAVY RAIN HAS ENDED FOR NOW. THUNDERSTORMS WITH HEAVY RAINFALL
MAY WORK INTO THE AREA AGAIN LATE TONIGHT.  AN AREAL FLOOD WARNING
REMAINS IN EFFECT AS RIVERS AND STREAMS ARE RISING.  STAY TUNED TO
REMAINING ROAD CLOSURES.

LAT...LON 4469 9031 4468 8985 4451 8984 4451 8973
      4425 8973 4425 9032

$$

TDH

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 21, 8:52 PM CDT	Special Weather Statement	GRB	Wood	38 min
Sep 21, 10:49 PM CDT	Areal Flood Warning	GRB	Portage, Waushara, Wood	21 hr
Sep 22, 7:58 AM CDT	River Flood Warning	GRB	Wood	42 hr

Nearby

Flash Flood Warnings in Wisconsin, 2016 Every flash flood warning in 2016

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.