Alert archive / Wisconsin / Tornado Warnings in 2015

Tornado Warning 4, NWS Green Bay, WI

July 6, 2015Shawano County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jul 6, 2015, 5:28 PM CDT for Shawano County, Wisconsin. It was in force for 32 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
Jul 6, 2015, 5:28 PM CDT (22:28 UTC)
Expired
Jul 6, 2015, 6:00 PM CDT
In force
32 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon
Tornado
Observed
Hail
0.75 in

County Shawano County, WI

The radar

The Green Bay radar (KGRB), 40 km from the middle of the area, began a volume at 22:28 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 12:00Z, 10.5 hours before the alert went out and 42 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 2015-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 37 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 2015-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.193958Sfc1 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
37 J/kg
Mixed-layer CIN
-212 J/kg
Mixed-layer LCL
884 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
42 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.

562 
WFUS53 KGRB 062228
TORGRB
WIC115-062300-
/O.NEW.KGRB.TO.W.0004.150706T2228Z-150706T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
528 PM CDT MON JUL 6 2015

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL SHAWANO COUNTY IN NORTHEASTERN WISCONSIN...

* UNTIL 600 PM CDT

* AT 527 PM CDT...A CONFIRMED TORNADO WAS LOCATED OVER 5 
  MILES SOUTHEAST OF SHAWANO... MOVING NORTHEAST AT 25 MPH.

  HAZARD...DAMAGING TORNADO. 

  SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  EAST CENTRAL SHAWANO COUNTY...INCLUDING THE FOLLOWING LOCATIONS...
  PULCIFER...SHAWANO LAKE...ADVANCE...GREEN VALLEY...CECIL...
  KRAKOW...ZACHOW AND BONDUEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW! MOVE TO A
BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A MOBILE HOME...OR
IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4473 8854 4485 8859 4485 8825 4473 8825
TIME...MOT...LOC 2227Z 244DEG 21KT 4477 8853 

TORNADO...OBSERVED
HAIL...<.75IN

$$

AK
2 follow-up statements
200 
WWUS53 KGRB 062240
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
540 PM CDT MON JUL 6 2015

WIC115-062300-
/O.CON.KGRB.TO.W.0004.000000T0000Z-150706T2300Z/
SHAWANO WI-
540 PM CDT MON JUL 6 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR EAST
CENTRAL SHAWANO COUNTY...
    
AT 538 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES EAST OF SHAWANO...MOVING NORTHEAST AT 25 MPH.

HAZARD...TORNADO. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

LOCATIONS IMPACTED INCLUDE...
CECIL...GREEN VALLEY...AND PULCIFER. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
GREEN BAY.

&&

LAT...LON 4475 8847 4485 8851 4485 8825 4474 8825
TIME...MOT...LOC 2238Z 243DEG 23KT 4481 8843 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

AK
576 
WWUS53 KGRB 062256
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
556 PM CDT MON JUL 6 2015

WIC115-062305-
/O.EXP.KGRB.TO.W.0004.000000T0000Z-150706T2300Z/
SHAWANO WI-
556 PM CDT MON JUL 6 2015

...THE TORNADO WARNING FOR EAST CENTRAL SHAWANO COUNTY WILL EXPIRE AT
600 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA. 
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER...HEAVY 
RAIN IS STILL POSSIBLE WITH THIS STORM.

LAT...LON 4475 8847 4485 8851 4485 8825 4474 8825
TIME...MOT...LOC 2254Z 244DEG 21KT 4481 8843 

$$

AK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 1:53 AM CDTSpecial Weather StatementGRBLincoln, Oneida, Vilas82 min
Jul 6, 3:27 AM CDTBeach Hazards StatementGRBDoor, Kewaunee, Manitowoc19 hr
Jul 6, 6:52 AM CDTSpecial Weather StatementGRBLincoln, Marathon, Oneida, Vilas, Wood38 min
Jul 6, 7:35 AM CDTSpecial Weather StatementGRBLanglade, Lincoln, Marathon, Oneida, Vilas, Wood55 min
Jul 6, 8:29 AM CDTSpecial Weather StatementGRBForest, Langlade, Portage, Waupaca61 min
Jul 6, 9:31 AM CDTSpecial Weather StatementGRBFlorence, Marinette, Menominee, Oconto, Shawano, Waupaca59 min
Jul 6, 4:23 PM CDTSpecial Weather StatementGRBShawano22 min
Jul 6, 4:44 PM CDTSpecial Weather StatementGRBShawano31 min
Jul 6, 5:02 PM CDTTornado Warning Tornado observedGRBShawano28 min
Jul 6, 5:54 PM CDTTornado WarningGRBOconto32 min
Jul 6, 6:25 PM CDTSpecial Weather StatementGRBOconto50 min

Nearby

Tornado Warnings in Wisconsin, 2015Every tornado warning in 2015Tornadoes in 2015

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.