Alert archive / Wisconsin / Tornado Warnings in 2005

Tornado Warning 31, NWS Green Bay, WI

August 18, 2005Portage County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Aug 18, 2005, 5:52 PM CDT for Portage County, Wisconsin. It was in force for 53 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
Aug 18, 2005, 5:52 PM CDT (22:52 UTC)
Expired
Aug 18, 2005, 6:45 PM CDT
In force
53 min
Issued by
NWS Green Bay, WI
Area
Counties, with a storm outline in the text

County Portage County, WI

The radar

The Green Bay radar (KGRB), 113 km from the middle of the area, began a volume at 22:53 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 18, 2:50 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.9 hours before the alert went out and 114 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 12:00Z on 2005-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 206 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2005-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
206 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
995 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
90 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 
WFUS53 KGRB 182252
TORGRB
WIC097-182345-
/O.NEW.KGRB.TO.W.0031.050818T2252Z-050818T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
552 PM CDT THU AUG 18 2005

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN PORTAGE COUNTY IN CENTRAL WISCONSIN

* UNTIL 645 PM CDT

* AT 549 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO 22 MILES SOUTHWEST OF AMHERST...OR
  ABOUT 16 MILES SOUTHEAST OF WISCONSIN RAPIDS...MOVING EAST AT 15
  MPH.

* THE TORNADO WILL BE NEAR...
  BANCROFT BY 610 PM...
  ALMOND AND KEENE BY 625 PM...
  BLAINE BY 645 PM...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
WIDESPREAD DAMAGING WINDS.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4425 8970 4426 8924 4447 8923 4442 8971

$$

KURIMSKI
3 follow-up statements
000 
WWUS53 KGRB 182308
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
607 PM CDT THU AUG 18 2005

WIC097-182345-
/O.CON.KGRB.TO.W.0031.000000T0000Z-050818T2345Z/
PORTAGE WI-
607 PM CDT THU AUG 18 2005

...A TORNADO WARNING CONTINUES UNTIL 645 PM CDT FOR SOUTHERN PORTAGE 
COUNTY...

AT 606 PM...DOPPLER RADAR CONTINUED TO INDICATE A TORNADO.  THIS
TORNADO WAS LOCATED NEAR BANCROFT...OR ABOUT 17 MILES SOUTH OF
STEVENS POINT...MOVING EAST AT 20 MPH.

THE TORNADO WILL BE NEAR...
  KEENE BY 615 PM...
  ALMOND BY 620 PM...
  BLAINE BY 635 PM...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

LAT...LON 4425 8970 4426 8924 4447 8923 4442 8971

$$

KURIMSKI
000 
WWUS53 KGRB 182328
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
628 PM CDT THU AUG 18 2005

WIC097-182345-
/O.CON.KGRB.TO.W.0031.000000T0000Z-050818T2345Z/
PORTAGE WI-
628 PM CDT THU AUG 18 2005

...A TORNADO WARNING CONTINUES UNTIL 645 PM CDT FOR SOUTHERN PORTAGE 
COUNTY...

AT 623 PM...DOPPLER RADAR CONTINUED TO INDICATE A TORNADO.  THIS
TORNADO WAS LOCATED NEAR ALMOND...OR ABOUT 17 MILES SOUTH OF STEVENS
POINT...MOVING EAST AT 20 MPH.

THE TORNADO WILL BE NEAR...
  BLAINE BY 645 PM...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

LAT...LON 4425 8970 4426 8924 4447 8923 4442 8971

$$

KURIMSKI
000 
WWUS53 KGRB 182344
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
644 PM CDT THU AUG 18 2005

WIC097-182354-
/O.EXP.KGRB.TO.W.0031.000000T0000Z-050818T2345Z/
PORTAGE WI-
644 PM CDT THU AUG 18 2005

...THE TORNADO WARNING FOR SOUTHERN PORTAGE COUNTY EXPIRES AT 645 PM 
CDT...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED OUT OF
THE AREA.

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA UNTIL 900 PM.

LAT...LON 4425 8970 4426 8924 4447 8923 4442 8971

$$

KURIMSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 6:36 PM CDTTornado WarningGRBWaushara39 min

Nearby

Tornado Warnings in Wisconsin, 2005Every tornado warning in 2005Tornadoes in 2005

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.