Alert archive / Wisconsin / Tornado Warnings in 2018

Tornado Warning 11, NWS Green Bay, WI

October 3, 2018Menominee County, Shawano County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Oct 3, 2018, 7:44 PM CDT for Menominee County, Shawano County, Wisconsin. It was in force for 18 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: Oct 3, 2018, 7:44 PM CDT (00:44 UTC)
Expired: Oct 3, 2018, 8:02 PM CDT
In force: 18 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Menominee County, WI, Shawano County, WI

The radar

The Green Bay radar (KGRB), 72 km from the middle of the area, began a volume at 00:47 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.

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, 0.7 hours before the alert went out and 74 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.

804 
WFUS53 KGRB 040044
TORGRB
WIC078-115-040115-
/O.NEW.KGRB.TO.W.0011.181004T0044Z-181004T0115Z/

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

The National Weather Service in Green Bay has issued a

* Tornado Warning for...
  Southern Menominee County in northeastern Wisconsin...
  Western Shawano County in northeastern Wisconsin...

* Until 815 PM CDT.

* At 744 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Wittenberg, or 22 miles south of Antigo, moving
  east at 50 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Weather spotters reported funnel cloud.

  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...
  Keshena around 810 PM CDT.
  Legend Lake around 815 PM CDT.

Other locations impacted by this tornadic thunderstorm include
College Of Menominee Nation, Shepley, Whitcomb, Tilleda, Lyndhurst,
Gresham, Middle Village and Bowler.

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 4476 8911 4490 8915 4501 8851 4484 8849
TIME...MOT...LOC 0044Z 259DEG 44KT 4483 8906 

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

$$

RDM

2 follow-up statements

193 
WWUS53 KGRB 040053
SVSGRB

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

WIC078-115-040115-
/O.CON.KGRB.TO.W.0011.000000T0000Z-181004T0115Z/
Menominee WI-Shawano WI-
753 PM CDT WED OCT 3 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR SOUTHERN
MENOMINEE AND CENTRAL SHAWANO COUNTIES...
    
At 753 PM CDT, a severe thunderstorm capable of producing a tornado
was located 10 miles southwest of Neopit, or 16 miles west of
Shawano, moving east at 50 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 dangerous storm will be near...
  Keshena around 810 PM CDT.
  Legend Lake around 815 PM CDT.

Other locations impacted by this tornadic thunderstorm include
College Of Menominee Nation, Tilleda, Middle Village, Lyndhurst,
Gresham and Bowler.

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 4478 8899 4492 8904 4501 8851 4484 8849
TIME...MOT...LOC 0053Z 259DEG 44KT 4485 8891 

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

$$

RDM

468 
WWUS53 KGRB 040102
SVSGRB

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

WIC078-115-040112-
/O.CAN.KGRB.TO.W.0011.000000T0000Z-181004T0115Z/
Menominee WI-Shawano WI-
802 PM CDT WED OCT 3 2018

...THE TORNADO WARNING FOR SOUTHERN MENOMINEE AND CENTRAL SHAWANO
COUNTIES 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 gusty winds are
still possible with this thunderstorm.

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

LAT...LON 4478 8899 4492 8904 4501 8851 4484 8849
TIME...MOT...LOC 0101Z 259DEG 44KT 4487 8893 

$$

RDM

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 3, 7:07 PM CDT	Tornado Warning	GRB	Langlade, Menominee, Shawano	23 min
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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.