Alert archive / Wisconsin / Flash Flood Warnings in 2003

Flash Flood Warning 7, NWS Green Bay, WI

July 30, 2003Brown County, Outagamie County, Wisconsin

NWS Green Bay, WI issued this flash flood warning at Jul 30, 2003, 8:18 PM CDT for Brown County, Outagamie County, Wisconsin. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 30, 2003, 8:18 PM CDT (01:18 UTC)
Expired: Jul 30, 2003, 11:15 PM CDT
In force: 3 hr
Issued by: NWS Green Bay, WI
Area: Counties, with a storm outline in the text

Counties Brown County, WI, Outagamie County, WI

The radar

The Green Bay radar (KGRB), 16 km from the middle of the area, began a volume at 01:17 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 00:00Z, 1.3 hours before the alert went out and 17 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: 127 J/kg
Mixed-layer CIN: -147 J/kg
Mixed-layer LCL: 900 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KGRB 310122
FFWGRB
WIC009-087-310415-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
818 PM CDT WED JUL 30 2003

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BROWN COUNTY IN WISCONSIN
  OUTAGAMIE COUNTY IN WISCONSIN

* UNTIL 1115 PM CDT

* AT 818 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS WITH TORRENTIAL RAIN. THE STORMS WERE CENTERED       
  NEAR MACKVILLE...OR 8 MILES NORTH OF APPLETON. THE STORMS WERE     
  SLOWLY MOVING EAST.

* RADAR ESTIMATES INDICATED THAT UP TO 6 INCHES OF RAIN HAD FALLEN IN
  THIS AREA. 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 THIS AREA. SOME LOCATIONS WHICH      
  ARE AT HIGH RISK OF FLASH FLOODING INCLUDE...BLACK CREEK...SEYMOUR 
  BINGHAMTON...GREEN BAY....AND GREENLEAF.

THIS WARNING REPLACES THE PREVIOUS WARNINGS FOR OUTAGAMIE AND 
SOUTHERN BROWN COUNTIES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4458 8873 4425 8873 4425 8819 4433 8777
          4468 8776 4459 8828

$$

KALLAS

2 follow-up statements

000 
WGUS73 KGRB 310216
FFSGRB
WIC009-087-310415-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
915 PM CDT WED JUL 30 2003

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR BROWN AND OUTAGAMIE
COUNTIES...

AT 915 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
THUNDERSTORMS WITH TORRENTIAL RAIN. THE STORMS WERE FROM 11 MILES
EAST OF GREEN BAY TO APPLETON. THE STORMS WERE LOCATED MOVING EAST AT
10 MPH. THE STORMS WILL CONTINUE TO PRODUCE HEAVY RAIN. A FLASH FLOOD
WARNING IS IN EFFECT FOR BROWN AND OUTAGAMIE COUNTIES UNTIL 1115 PM.

RADAR ESTIMATES INDICATED THAT UP TO 6 INCHES OF RAIN HAD FALLEN IN
THIS AREA. ANOTHER INCH OF RAIN IS LIKELY IN THIS AREA. SOME
LOCATIONS WHICH ARE AT HIGH RISK OF FLASH FLOODING INCLUDE...NEW
FRANKEN...APPLETON...HUMBOLDT...WRIGHTSTOWN AND BELLEVUE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

$$

KALLAS

000 
WGUS73 KGRB 310255
FFSGRB
WIC009-087-310415-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
950 PM CDT WED JUL 30 2003

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR BROWN AND OUTAGAMIE
COUNTIES...

AT 950 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A 
LINE OF THUNDERSTORMS WITH TORRENTIAL RAIN EXTENDING FROM 5 MILES 
SOUTH OF FREMONT...EAST ACROSS APPLETON TO 5 MILES NORTH OF 
MANITOWOC. THE STRONGEST STORMS WERE LOCATED BETWEEN DENMARK AND 
GREENLEAF AND JUST NORTH OF MISHICOT.  THE STORMS WERE MOVING EAST 
AT 20 MPH.  A FLASH FLOOD WARNING REMAINS IN EFFECT FOR BROWN AND 
OUTAGMIE COUNTIES UNTIL 1115 PM CDT. 

RADAR ESTIMATES INDICATED THAT UP TO 6 INCHES OF RAIN HAD FALLEN IN 
PARTS OF SOUTHERN OUTAGAMIE AND EXTREME SOUTHERN BROWN COUNTIES 
SINCE 4 PM THIS AFTERNOON. ALTHOUGH THE STORMS HAVE DIMINISHED 
SOMEWHAT IN INTENSITY...ANOTHER INCH OF RAIN IS STILL POSSIBLE AS 
THE STORMS CONTINUE TO TRAIN ACROSS THE SAME GENERAL AREA DURING 
THE NEXT HOUR. SOME LOCATIONS WHICH ARE AT HIGH RISK OF FLASH 
FLOODING INCLUDE...APPLETON...GREENLEAF AND DENMARK.  

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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.

$$

BRUSKY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 7:17 PM CDT	Flash Flood Warning	GRB	Brown, Calumet, Manitowoc	3 hr
Jul 30, 7:27 PM CDT	Flash Flood Warning	GRB	Winnebago	3 hr
Jul 31, 1:46 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	44 min
Jul 31, 2:04 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	41 min
Jul 31, 2:19 PM CDT	Severe Thunderstorm Warning	GRB	Manitowoc	41 min
Jul 31, 2:41 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	49 min
Jul 31, 3:27 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	48 min
Jul 31, 3:51 PM CDT	Severe Thunderstorm Warning	GRB	Oconto	54 min
Jul 31, 4:06 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	54 min
Jul 31, 4:21 PM CDT	Special Marine Warning	GRB		54 min
Jul 31, 4:21 PM CDT	Special Marine Warning	GRB		54 min
Jul 31, 5:31 PM CDT	Special Marine Warning	GRB		74 min
Jul 31, 6:27 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	33 min
Jul 31, 6:43 PM CDT	Special Marine Warning	GRB		47 min

Nearby

Flash Flood Warnings in Wisconsin, 2003 Every flash flood warning in 2003

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.