Alert archive / Wisconsin / Tornado Warnings in 2015

Tornado Warning 5, NWS Green Bay, WI

July 6, 2015Oconto County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jul 6, 2015, 5:54 PM CDT for Oconto County, Wisconsin. It was in force for 32 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 6, 2015, 5:54 PM CDT (22:54 UTC)
Expired: Jul 6, 2015, 6:26 PM CDT
In force: 32 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Oconto County, WI

The radar

The Green Bay radar (KGRB), 46 km from the middle of the area, began a volume at 22:54 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.

What was reported inside it

Time	Report	Where	Remark
Jul 6, 5:56 PM CDT	TORNADO	2 E Gillett, WI	A WEAK TORNADO /EF1/ UPROOTED AND SNAPPED TREES IN HALF AND PRODUCED MINOR DAMAGE TO A HOUSE. THE TORNADO TRACK WAS 50 YARDS WIDE...1340 YARDS LONG AND WAS ON THE GROUND FROM 556 PM TO 600 PM.
Jul 6, 5:59 PM CDT	TSTM WND DMG	3 E Gillett, WI	TREES AND POWERLINES DOWN AT INTERSECTION OF HWY 22 AND 32. REPORTED FORWARDED BY NBC 26. TIME OF EVENT ESTIMATED.
Jul 6, 6:02 PM CDT	TORNADO	3 Ene Gillett, WI	A WEAK TORNADO /EF0/ UPROOTED A SMALL STAND OF TREES AND SNAPPED A SMALL TREE IN HALF. THE TORNADO TRACK WAS 15 YARDS LONG...50 YARDS WIDE AND WAS ON THE GROUND FROM 602 PM TO 603 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.9 hours before the alert went out and 49 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: 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.

125 
WFUS53 KGRB 062254
TORGRB
WIC083-062345-
/O.NEW.KGRB.TO.W.0005.150706T2254Z-150706T2345Z/

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

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN OCONTO COUNTY IN NORTHEASTERN WISCONSIN...

* UNTIL 645 PM CDT
    
* AT 553 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A 
  TORNADO WAS LOCATED 5 MILES SOUTHWEST OF GILLETT...OR 14 MILES 
  NORTHEAST 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...
  GILLETT...OCONTO FALLS...STILES...SPRUCE AND LENA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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 4479 8825 4485 8825 4485 8834 4494 8840
      4505 8812 4502 8812 4502 8808 4490 8791
TIME...MOT...LOC 2253Z 244DEG 22KT 4487 8833 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

AK

3 follow-up statements

541 
WWUS53 KGRB 062301
SVSGRB

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

WIC083-062345-
/O.CON.KGRB.TO.W.0005.000000T0000Z-150706T2345Z/
OCONTO WI-
601 PM CDT MON JUL 6 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
SOUTHEASTERN OCONTO COUNTY...
    
AT 600 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR GILLETT...OR 17 
MILES NORTHEAST OF SHAWANO...MOVING NORTHEAST AT 25 MPH.

HAZARD...DAMAGING TORNADO. 

SOURCE...WEATHER SPOTTERS CONFIRMED A 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. 

LOCATIONS IMPACTED INCLUDE...
GILLETT...OCONTO FALLS...STILES...SPRUCE AND LENA. 

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 4479 8825 4485 8825 4485 8830 4494 8837
      4505 8812 4502 8812 4502 8808 4490 8791
TIME...MOT...LOC 2300Z 244DEG 22KT 4489 8827 

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

$$

AK

961 
WWUS53 KGRB 062313
SVSGRB

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

WIC083-062345-
/O.CON.KGRB.TO.W.0005.000000T0000Z-150706T2345Z/
OCONTO WI-
613 PM CDT MON JUL 6 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR CENTRAL
OCONTO COUNTY...
    
AT 611 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 
WAS LOCATED 5 MILES SOUTHWEST SPRUCE...OR 22 MILES NORTHEAST OF 
SHAWANO...MOVING NORTHEAST AT 25 MPH. THE CIRCULATION HAD 
WEAKENED... HOWEVER IT MAY INTENSIFY ONCE AGAIN...THUS THE TORNADO 
WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR CENTRAL OCONTO 
COUNTY.

HAZARD...TORNADO. 

SOURCE...RADAR INDICATED WEAK 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...
OCONTO FALLS...SPRUCE AND LENA. 

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 4486 8821 4498 8828 4505 8812 4502 8812
      4502 8808 4492 8795
TIME...MOT...LOC 2311Z 239DEG 23KT 4494 8819 

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

$$

AK

000 
WWUS53 KGRB 062326
SVSGRB

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

WIC083-062334-
/O.CAN.KGRB.TO.W.0005.000000T0000Z-150706T2345Z/
OCONTO WI-
626 PM CDT MON JUL 6 2015

...THE TORNADO WARNING FOR CENTRAL OCONTO COUNTY IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO. 
THEREFORE...THE WARNING HAS BEEN CANCELLED. HOWEVER...HEAVY RAIN
IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4486 8821 4498 8828 4505 8812 4502 8812
      4502 8808 4492 8795
TIME...MOT...LOC 2323Z 244DEG 22KT 4498 8809 

$$

AK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 1:53 AM CDT	Special Weather Statement	GRB	Lincoln, Oneida, Vilas	82 min
Jul 6, 3:27 AM CDT	Beach Hazards Statement	GRB	Door, Kewaunee, Manitowoc	19 hr
Jul 6, 6:52 AM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Oneida, Vilas, Wood	38 min
Jul 6, 7:35 AM CDT	Special Weather Statement	GRB	Langlade, Lincoln, Marathon, Oneida, Vilas, Wood	55 min
Jul 6, 8:29 AM CDT	Special Weather Statement	GRB	Forest, Langlade, Portage, Waupaca	61 min
Jul 6, 9:31 AM CDT	Special Weather Statement	GRB	Florence, Marinette, Menominee, Oconto, Shawano, Waupaca	59 min
Jul 6, 4:23 PM CDT	Special Weather Statement	GRB	Shawano	22 min
Jul 6, 4:44 PM CDT	Special Weather Statement	GRB	Shawano	31 min
Jul 6, 5:02 PM CDT	Tornado Warning Tornado observed	GRB	Shawano	28 min
Jul 6, 5:28 PM CDT	Tornado Warning Tornado observed	GRB	Shawano	32 min
Jul 6, 6:25 PM CDT	Special Weather Statement	GRB	Oconto	50 min

Nearby

Tornado Warnings in Wisconsin, 2015 Every tornado warning in 2015 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.