Alert archive / Wisconsin / Flash Flood Warnings in 1993

Flash Flood Warning 16, NWS Green Bay, WI

July 5, 1993Oconto County, Shawano County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at Jul 5, 1993, 8:44 PM CDT for Oconto County, Shawano County, Wisconsin. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 5, 1993, 8:44 PM CDT (01:44 UTC)
Expired
Jul 5, 1993, 11:45 PM CDT
In force
3 hr
Issued by
NWS Green Bay, WI
Area
Whole counties

Counties Oconto County, WI, Shawano County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.7 hours before the alert went out and 56 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 1993-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 48 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 1993-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
48 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
574 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
226 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 
TTAA00 KGRB 060146 RRA
FFWGRB
WIC083-115-060445-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
844 PM CDT MON JUL 5 1993
 
THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1145 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST WISCONSIN
 
   ...SOUTHERN OCONTO COUNTY...EASTERN SHAWANO COUNTY
 
...FLOODING IS REPORTED IN SHAWANO AND OCONTO COUNTIES...
 
FLOODING HAS BEEN REPORTED ACROSS SECTIONS OF SOUTHERN SHAWANO COUNTY
NEAR ANGELICA OR ABOUT 15 MILES NORTHWEST OF GREEN BAY...AND IN SOUTHERN
OCONTO COUNTY ABOUT 20 MILES NORTH OF GREEN BAY OR NEAR ABRAMS.
 
COUNTY SHERIFF'S FROM BOTH COUNTIES REPORTED MANY ROADS UNDER AS MUCH AS
A FOOT OF WATER.
 
ADDITIONAL RAINFALL TONIGHT IS EXPECTED...AND THIS WILL AGGREVIATE THE
SITUATION.
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODINGf IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
ISAACSON

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 5, 6:49 PM CDT, 1 hour 55 minutes before
WIZ012-060045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
649 PM CDT MON JUL 5 1993

...STRONG THUNDERSTORMS MOVING ACROSS WINNEBAGO COUNTY...

AT 645 PM...A STRONG THUNDERSTORM WAS INDICATED BY RADAR ABOUT 10
MILES WEST OF OSHKOSH OR NEAR WINNECONNE.  THESE STORMS WERE MOVING
TO THE NORTHEAST AROUND 45 MPH AND WILL BE MOVING INTO THE OSHKOSH
AREA BY 7 PM AND INTO THE NEENAH/MENASHA AREA BY 715 PM

THESE STORMS WILL PRODUCE TORRENTIAL RAINS...DANGEROUS LIGHTNING...
GUSTY WINDS AND SMALL HAIL.

IF THREATENING WEATHER APPROACHES...SEEK SAFE SHELTER INDOORS.
BOATERS ON AREA LAKES SHOULD SEEK SAFE HARBOR IMMEDIATELY.

ISAACSON
Special weather statement, Jul 5, 6:50 PM CDT, 1 hour 54 minutes before
WIZ012-060045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
649 PM CDT MON JUL 5 1993

...STRONG THUNDERSTORMS MOVING ACROSS WINNEBAGO COUNTY...

AT 645 PM...A STRONG THUNDERSTORM WAS INDICATED BY RADAR ABOUT 10
MILES WEST OF OSHKOSH OR NEAR WINNECONNE.  THESE STORMS WERE MOVING
TO THE NORTHEAST AROUND 45 MPH AND WILL BE MOVING INTO THE OSHKOSH
AREA BY 7 PM AND INTO THE NEENAH/MENASHA AREA BY 715 PM

THESE STORMS WILL PROD UCE TORRENTIAL RAINS...DANGEROUS LIGHTNING...
GUSTY WINDS AND SMALL HAIL.

IF THREATENING WEATHER APPROACHES...SEEK SAFE SHELTER INDOORS.
BOATERS ON AREA LAKES SHOULD SEEK SAFE HARBOR IMMEDIATELY.

ISAACSON
Special weather statement, Jul 5, 7:11 PM CDT, 1 hour 33 minutes before
WIZ008-012-060115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
711 PM CDT MON JUL 5 1993

...STRONG THUNDERSTORMS MOVING ACROSS THE FOX CITIES...

AT 705 PM...RADAR INDICATED INTENSE THUNDERSTORMS MOVING ACROSS THE
FOX CITIES AREA...5 MILES NORTHEAST OF APPLETON OR IN THE LITTLE CHUTE
AND KAUKAUNA AREAS.  THESE STORMS WERE MOVING TO THE NORTHEAST AROUND
45 MPH AND WILL CONTINUE TO AFFECT THE FOX CITIES AREA UNTIL 745 PM.
THESE STORMS WILL MOVE INTO SOUTHERN BROWN COUNTY NEAR WRIGHTSTOWN
AND GREENLEAF BY 730 PM.

VERY HEAVY RAINS...DANGEROUS LIGHTNING AND SMALL HAIL CAN BE EXPECTED
FROM THESE STORMS.  IF THREATENING WEATHER APPROACHES...SEEK SAFE
INDOOR SHELTER.

ISAACSON
Special weather statement, Jul 5, 7:12 PM CDT, 1 hour 32 minutes before
WIZ008-012-060115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
711 PM CDT MON JUL 5 1993

...STRONG THUNDERSTORMS MOVING ACROSS THE FOX CITIES...

AT 705 PM...RADAR INDICATED INTENSE THUNDERSTORMS MOVING ACROSS THE
FOX CITIES AREA...5 MILES NORTHEAST OF APPLETON OR IN THE LITTLE CHUTE
AND KAUKAUNA AREAS.  THESE STORMS WERE MOVING TO THE NORTHEAST AROUND
45 MPH AND WILL CONTINUE TO AFFECT THE FOX CITIES AREA UNTIL 745 PM.
THESE STORMS WILL MOVE INTO SOUTHERN BROWN COUNTY NEAR WRIGHTSTOWN
AND GREENLEAF BY 730 PM.

VERY HEAVY RAINS...DANGEROUS LIGHTNING AND SMALL HAIL CAN BE EXPECTED
FROM THESE STORMS.  IF THREATENING WEATHER APPROACHES...SEEK SAFE
INDOOR SHELTER.
 n
ISAACSON
Special weather statement, Jul 5, 7:59 PM CDT, 45 minutes before
WIZ008-009-012-060200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
759 PM CDT MON JUL 5 1993

...A STRONG THUNDERSTORM MOVING ACROSS NORTHERN CALUMET COUNTY...

AT 755 PM...WEATHER RADAR INDICATED A STRONG THUNDERSTORM 25 MILES WEST
OF MANITOWOC OR NEAR BRILLION IN NORTHEAST CALUMET COUNTY.  THE STORM
WAS MOVING TO THE NORTHEAST AROUND 45 MPH AND WILL BE MOVING INTO
SOUTHEAST BROWN COUNTY NEAR DENMARK...AND WILL MOVE INTO THE KEWAUNEE
AREA BY AROUND 9 PM.

THIS STORM IS CAPABLE OF PRODUCING TORRENTIAL RAINFALL...DANGEROUS
LIGHTNING AND SMALL HAIL.

IF THREATENING WEATHER APPROACHES...SEEK SAFE INDOOR SHELTER.

ISAACSON
Special weather statement, Jul 5, 8:00 PM CDT, 44 minutes before
WIZ008-009-012-060200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
759 PM CDT MON JUL 5 1993

...A STRONG THUNDERSTORM MOVING ACROSS NORTHERN CALUMET COUNTY...

AT 755 PM...WEATHER RADAR INDICATED A STRONG THUNDERSTORM 25 MILES WEST
OF MANITOWOC OR NEAR BRILLION IN NORTHEAST CALUMET COUNTY.  THE STORM
WAS MOVING TO THE NORTHEAST AROUND 45 MPH AND WILL BE MOVING INTO
SOUTHEAST BROWN COUNTY NEAR DENMARK...AND WILL MOVE INTO TH`E KEWAUNEE
AREA BY AROUND 9 PM.

THIS STORM IS CAPABLE OF PRODUCING TORRENTIAL RAINFALL...DANGEROUS
LIGHTNING AND SMALL HAIL.

IF THREATENING WEATHER APPROACHES...SEEK SAFE INDOOR SHELTER.

ISAACSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 8:03 PM CDTFlash Flood WarningGRBBrown, Kewaunee, Manitowoc3 hr
Jul 5, 8:03 PM CDTFlash Flood WarningGRBCalumet3 hr
Jul 5, 8:17 PM CDTSevere Thunderstorm WarningGRBManitowoc58 min
Jul 5, 8:27 PM CDTFlash Flood WarningGRBBrown3 hr
Jul 5, 9:35 PM CDTFlash Flood WarningGRBColumbia, Dane5 hr

Nearby

Flash Flood Warnings in Wisconsin, 1993Every flash flood warning in 1993

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.