Alert archive / Wisconsin / Tornado Warnings in 2018

Tornado Warning 9, NWS Green Bay, WI

October 3, 2018Langlade County, Menominee County, Shawano County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Oct 3, 2018, 7:07 PM CDT for Langlade County, Menominee County, Shawano County, Wisconsin. It was in force for 23 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: Oct 3, 2018, 7:07 PM CDT (00:07 UTC)
Expired: Oct 3, 2018, 7:30 PM CDT
In force: 23 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Langlade County, WI, Menominee County, WI, Shawano County, WI

The radar

The Green Bay radar (KGRB), 85 km from the middle of the area, began a volume at 00:09 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
Oct 3, 7:08 PM CDT	TORNADO	1 Sw Mattoon, WI	WEAK, BRIEF TORNADO JUST SOUTH OF MATTOON. DAMAGE WAS CONFINED TO TREES IN A WOODED AREA.

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
Oct 3, 3:31 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.1 hours before the alert went out and 87 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: 500 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 1400 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 428 m²/s²
0-3 km storm-relative helicity: 749 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 6.6

Open this sounding in Storm Lab

The text

As transmitted.

801 
WFUS53 KGRB 040007
TORGRB
WIC067-078-115-040030-
/O.NEW.KGRB.TO.W.0009.181004T0007Z-181004T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Green Bay WI
707 PM CDT WED OCT 3 2018

The National Weather Service in Green Bay has issued a

* Tornado Warning for...
  Menominee County in northeastern Wisconsin...
  Southeastern Langlade County in north central Wisconsin...
  Western Shawano County in northeastern Wisconsin...

* Until 730 PM CDT.
    
* At 706 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 11 miles south of Antigo, moving east at 50 mph.

  HAZARD...Tornado and quarter size hail.

  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 dangerous storm will be near...
  Neopit around 720 PM CDT.

Other locations impacted by this tornadic thunderstorm include Middle
Village, Upper Bass Lake, Mattoon, Zoar and Phlox.

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.

&&

LAT...LON 4488 8913 4509 8915 4517 8865 4492 8860
TIME...MOT...LOC 0006Z 253DEG 44KT 4499 8906 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

EB

2 follow-up statements

922 
WWUS53 KGRB 040019
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
719 PM CDT WED OCT 3 2018

WIC067-115-040028-
/O.CAN.KGRB.TO.W.0009.000000T0000Z-181004T0030Z/
Langlade WI-Shawano WI-
719 PM CDT WED OCT 3 2018

...THE TORNADO WARNING FOR SOUTHEASTERN LANGLADE AND WESTERN SHAWANO
COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1100 PM CDT for north central
and northeastern Wisconsin.

LAT...LON 4493 8873 4494 8874 4495 8898 4512 8898
      4512 8864 4492 8860
TIME...MOT...LOC 0018Z 253DEG 44KT 4504 8885 

$$

WIC078-040030-
/O.CON.KGRB.TO.W.0009.000000T0000Z-181004T0030Z/
Menominee WI-
719 PM CDT WED OCT 3 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR CENTRAL
MENOMINEE COUNTY...
    
At 718 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Neopit, or 16 miles southeast of Antigo, moving east
at 50 mph.

HAZARD...Tornado and quarter size hail.

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
central Menominee County, including the following locations... Zoar,
Upper Bass Lake and Middle Village.

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.

&&

LAT...LON 4493 8873 4494 8874 4495 8898 4512 8898
      4512 8864 4492 8860
TIME...MOT...LOC 0018Z 253DEG 44KT 4504 8885 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Kurimski

880 
WWUS53 KGRB 040030
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
730 PM CDT WED OCT 3 2018

WIC078-040039-
/O.EXP.KGRB.TO.W.0009.000000T0000Z-181004T0030Z/
Menominee WI-
730 PM CDT WED OCT 3 2018

...THE TORNADO WARNING FOR CENTRAL MENOMINEE COUNTY WILL EXPIRE AT
730 PM CDT...
    
Although the Tornado Warning will expire, a Severe Thunderstorm 
Warning remains in effect for Menominee County.

LAT...LON 4493 8873 4494 8874 4495 8898 4512 8898
      4512 8864 4492 8860
TIME...MOT...LOC 0029Z 253DEG 44KT 4508 8869 

$$

Kurimski

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 3, 7:08 PM CDT	Special Weather Statement	GRB	Marathon	52 min
Oct 3, 7:20 PM CDT	Tornado Warning	GRB	Marathon, Shawano	25 min
Oct 3, 7:29 PM CDT	Severe Thunderstorm Warning	GRB	Menominee, Oconto	19 min
Oct 3, 7:44 PM CDT	Tornado Warning	GRB	Menominee, Shawano	18 min
Oct 3, 8:18 PM CDT	Special Weather Statement	GRB	Marathon, Portage, Wood	42 min
Oct 3, 8:44 PM CDT	Special Weather Statement	GRB	Florence, Forest, Langlade, Menominee, Portage, Shawano and 1 more	61 min
Oct 3, 9:00 PM CDT	Special Weather Statement	GRB	Kewaunee	45 min
Oct 3, 9:18 PM CDT	Special Weather Statement	GRB	Marinette, Menominee, Oconto, Outagamie, Shawano, Waupaca and 2 more	42 min
Oct 3, 9:59 PM CDT	Special Weather Statement	GRB	Brown, Calumet, Door, Kewaunee, Manitowoc, Marinette and 7 more	61 min
Oct 3, 10:54 PM CDT	Special Weather Statement	GRB	Manitowoc	36 min
Oct 3, 10:55 PM CDT	Special Weather Statement	GRB	Door	50 min
Oct 4, 6:32 AM CDT	Small Craft Advisory	GRB		9 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; radar from the NEXRAD Level II archive.