Alert archive / Wisconsin / Tornado Warnings in 2008

Tornado Warning 11, NWS Green Bay, WI

August 1, 2008Door County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Aug 1, 2008, 2:55 PM CDT for Door County, Wisconsin. It was in force for 20 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 1, 2008, 2:55 PM CDT (19:55 UTC)
Expired
Aug 1, 2008, 3:15 PM CDT
In force
20 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon

County Door County, WI

The radar

The Green Bay radar (KGRB), 87 km from the middle of the area, began a volume at 19:55 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 1, 12:53 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.9 hours before the alert went out and 88 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 2008-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2008-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1166 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
26 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 011955
TORGRB
WIC029-012015-
/O.NEW.KGRB.TO.W.0011.080801T1955Z-080801T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
255 PM CDT FRI AUG 1 2008

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  DOOR COUNTY IN NORTHEAST WISCONSIN...

* UNTIL 315 PM CDT

* AT 250 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO 7 MILES WEST OF EGG HARBOR...OR 10
  MILES EAST OF MARINETTE...MOVING SOUTHEAST AT 36 MPH.

* THE TORNADO WILL BE NEAR...
  A POINT JUST SOUTH OF EGG HARBOR BY 305 PM...

THE MOST DANGEROUS PART OF THIS STORM WILL PASS BETWEEN EGG HARBOR 
AND CARLSVILLE...THEN MOVE TOWARD WHITEFISH DUNES STATE PARK.

IF YOU ARE IN THE PATH OF THIS STORM...MOVE TO A PLACE OF SAFETY 
IMMEDIATELY.

LAT...LON 4498 8716 4492 8715 4488 8718 4481 8727
      4492 8743 4505 8733 4508 8747 4507 8738
      4512 8732 4511 8729 4514 8726 4504 8710
TIME...MOT...LOC 1952Z 311DEG 31KT 4503 8740

$$
JS
2 follow-up statements
000 
WWUS53 KGRB 012009
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
309 PM CDT FRI AUG 1 2008

WIC029-012015-
/O.CON.KGRB.TO.W.0011.000000T0000Z-080801T2015Z/
DOOR-
307 PM CDT FRI AUG 1 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR DOOR
COUNTY...

AT 304 PM...DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS
TORNADO WAS LOCATED NEAR CARLSVILLE...OR 10 MILES NORTHEAST OF 
STURGEON BAY...AND MOVING SOUTHEAST AT 36 MPH. THE STORM WILL MOVE 
TOWARD VALMY AND INSTITUTE...AND WHITEFISH DUNES STATE PARK.

DOPPLER RADAR INDICATES STRONG ROTATION WITH THE STORM. A TORNADO MAY
DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS 
STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING AND 
STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A 
HIGHWAY OVERPASS.

CAMPERS AND OTHERS SHOULD SEEK SHELTER IN A STURDY BUILDING
IMMEDIATELY.

LAT...LON 4498 8716 4492 8715 4488 8718 4481 8727
      4492 8743 4505 8733 4508 8747 4507 8738
      4512 8732 4511 8729 4514 8726 4504 8710
TIME...MOT...LOC 2007Z 311DEG 31KT 4494 8726

$$

SKOWRONSKI
000 
WWUS53 KGRB 012016
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
316 PM CDT FRI AUG 1 2008

WIC029-012025-
/O.EXP.KGRB.TO.W.0011.000000T0000Z-080801T2015Z/
DOOR-
315 PM CDT FRI AUG 1 2008

...THE TORNADO WARNING FOR DOOR COUNTY HAS EXPIRED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED.
GUSTY WINDS AND SMALL HAIL ARE STILL POSSIBLE AS THE STORM MOVES 
ACROSS THE VALMY AND INSTITUTE AREAS.

LAT...LON 4498 8716 4492 8715 4488 8718 4481 8727
      4492 8743 4505 8733 4508 8747 4507 8738
      4512 8732 4511 8729 4514 8726 4504 8710
TIME...MOT...LOC 2015Z 307DEG 26KT 4493 8722

$$

SKOWRONSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 1:50 PM CDTSevere Thunderstorm WarningGRBMarinette25 min
Aug 1, 1:54 PM CDTSpecial Marine WarningGRB66 min
Aug 1, 2:04 PM CDTSevere Thunderstorm WarningGRBCalumet, Outagamie, Winnebago41 min
Aug 1, 2:33 PM CDTSevere Thunderstorm WarningGRBCalumet42 min
Aug 1, 2:34 PM CDTSevere Thunderstorm WarningGRBDoor56 min
Aug 1, 3:00 PM CDTSpecial Marine WarningGRB50 min
Aug 1, 4:36 PM CDTSpecial Marine WarningGRB24 min

Nearby

Tornado Warnings in Wisconsin, 2008Every tornado warning in 2008Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.