Alert archive / Wisconsin / Tornado Warnings in 2018

Tornado Warning 3, NWS Green Bay, WI

June 17, 2018Oconto County, Shawano County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jun 17, 2018, 9:24 PM CDT for Oconto County, Shawano County, Wisconsin. It was in force for 24 min. 1 report 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: Jun 17, 2018, 9:24 PM CDT (02:24 UTC)
Expired: Jun 17, 2018, 9:48 PM CDT
In force: 24 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Oconto County, WI, Shawano County, WI

What was reported inside it

Time	Report	Where	Remark
Jun 17, 9:33 PM CDT	TSTM WND GST 50	Krakow, WI

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 17, 3:46 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.4 hours before the alert went out and 23 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: 1303 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1550 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

066 
WFUS53 KGRB 180224
TORGRB
WIC083-115-180300-
/O.NEW.KGRB.TO.W.0003.180618T0224Z-180618T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Green Bay WI
924 PM CDT SUN JUN 17 2018

The National Weather Service in Green Bay has issued a

* Tornado Warning for...
  Southern Oconto County in northeastern Wisconsin...
  East central Shawano County in northeastern Wisconsin...

* Until 1000 PM CDT.

* At 924 PM CDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located 7
  miles south of Gillett, or 12 miles east of Shawano, moving east at
  40 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.

* These dangerous storms will be near...
  Pulaski around 935 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Pulcifer, Underhill, Stiles, Advance, Sobieski, South Chase,
Pensaukee, Zachow, Chase and Little Suamico.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4462 8801 4464 8801 4467 8799 4466 8798
      4468 8799 4467 8823 4468 8825 4467 8825
      4472 8848 4489 8843 4484 8779 4471 8792
      4463 8793 4465 8787 4460 8790
TIME...MOT...LOC 0224Z 281DEG 36KT 4479 8834 

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

$$

Kurimski

2 follow-up statements

245 
WWUS53 KGRB 180236
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
936 PM CDT SUN JUN 17 2018

WIC083-115-180300-
/O.CON.KGRB.TO.W.0003.000000T0000Z-180618T0300Z/
Oconto WI-Shawano WI-
936 PM CDT SUN JUN 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR SOUTHERN
OCONTO AND EAST CENTRAL SHAWANO COUNTIES...

At 936 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located 10
miles northeast of Pulaski, or 20 miles northwest of Bay Shore Park,
moving east at 45 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.

This tornadic thunderstorm will remain over mainly rural areas of
southern Oconto and east central Shawano Counties, including the
following locations... Stiles, Sobieski, South Chase, Pensaukee,
Chase, Little Suamico, Morgan, Abrams, Brookside and Green Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4469 8834 4488 8828 4484 8779 4471 8792
      4467 8793 4468 8799 4467 8823 4468 8823
      4468 8825 4467 8825
TIME...MOT...LOC 0236Z 272DEG 40KT 4480 8814 

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

$$

Kurimski

227 
WWUS53 KGRB 180248
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
948 PM CDT SUN JUN 17 2018

WIC083-115-180258-
/O.CAN.KGRB.TO.W.0003.000000T0000Z-180618T0300Z/
Oconto WI-Shawano WI-
948 PM CDT SUN JUN 17 2018

...THE TORNADO WARNING FOR SOUTHERN OCONTO AND EAST CENTRAL SHAWANO
COUNTIES IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been 
cancelled. However, damaging winds remain likely and a Severe 
Thunderstorm Warning remains in effect for the area.  

To report severe weather, contact your nearest law enforcement 
agency. They will relay your report to the National Weather Service 
Green Bay.

LAT...LON 4469 8834 4488 8828 4484 8779 4471 8792
      4467 8793 4468 8799 4467 8823 4468 8823
      4468 8825 4467 8825
TIME...MOT...LOC 0247Z 281DEG 36KT 4478 8797 

$$

Kurimski

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:06 PM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Portage, Wood	39 min
Jun 17, 7:17 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	88 min
Jun 17, 7:20 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	40 min
Jun 17, 8:11 PM CDT	Special Marine Warning	GRB		2 hr
Jun 17, 8:16 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Oconto, Shawano	59 min
Jun 17, 8:17 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	31 min
Jun 17, 8:51 PM CDT	Special Weather Statement	GRB	Door	54 min
Jun 17, 9:12 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Menominee, Oconto, Shawano	51 min
Jun 17, 9:19 PM CDT	Special Marine Warning	GRB		116 min
Jun 17, 10:01 PM CDT	Special Weather Statement	GRB	Brown, Kewaunee	59 min
Jun 17, 10:25 PM CDT	Special Weather Statement	GRB	Waupaca	65 min
Jun 17, 10:56 PM CDT	Special Weather Statement	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago, Wood	49 min
Jun 17, 11:48 PM CDT	Special Weather Statement	GRB	Winnebago	27 min
Jun 18, 12:19 AM CDT	Special Weather Statement	GRB	Calumet, Manitowoc	41 min
Jun 18, 12:51 AM CDT	Special Weather Statement	GRB	Brown, Calumet, Manitowoc, Outagamie, Portage, Waupaca and 3 more	84 min
Jun 18, 2:43 AM CDT	Areal Flood Advisory	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago, Wood	6 hr
Jun 18, 10:21 AM CDT	River Flood Warning	GRB	Oneida	35 hr
Jun 18, 11:30 AM CDT	River Flood Warning	GRB	Waupaca	5 days
Jun 18, 11:32 AM CDT	River Flood Warning	GRB	Waupaca	3 days
Jun 18, 3:52 PM CDT	River Flood Advisory	GRB	Oneida	36 hr

Nearby

Tornado Warnings in Wisconsin, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.