Alert archive / Wisconsin / Tornado Warnings in 2018

Tornado Warning 18, NWS Milwaukee, WI

October 9, 2018Marquette County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Oct 9, 2018, 4:47 PM CDT for Marquette County, Wisconsin. It was in force for 43 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 9, 2018, 4:47 PM CDT (21:47 UTC)
Expired: Oct 9, 2018, 5:30 PM CDT
In force: 43 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Marquette County, WI

The radar

The Green Bay radar (KGRB), 118 km from the middle of the area, began a volume at 21:47 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.8 hours before the alert went out and 117 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: 70 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 986 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

492 
WFUS53 KMKX 092147
TORMKX
WIC077-092230-
/O.NEW.KMKX.TO.W.0018.181009T2147Z-181009T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
447 PM CDT TUE OCT 9 2018

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  Northwestern Marquette County in south central Wisconsin...

* Until 530 PM CDT.
    
* At 447 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Montello, or 15 miles north of Portage, moving
  northeast at 20 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...
  Montello around 500 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Harrisville, Packwaukee, Neshkoro and Oxford.

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 4391 8917 4372 8941 4377 8955 4398 8939
      4398 8917
TIME...MOT...LOC 2147Z 219DEG 18KT 4377 8944 

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

$$

GEHRING

3 follow-up statements

791 
WWUS53 KMKX 092202
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
502 PM CDT TUE OCT 9 2018

WIC077-092230-
/O.CON.KMKX.TO.W.0018.000000T0000Z-181009T2230Z/
Marquette WI-
502 PM CDT TUE OCT 9 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
NORTHEASTERN MARQUETTE COUNTY...
    
At 501 PM CDT, a severe thunderstorm capable of producing a tornado 
was located just northwest of Montello, or 16 miles south of 
Wautoma, moving northeast at 20 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
northeastern Marquette County, including the following locations...
Harrisville and Neshkoro.

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 4391 8917 4380 8934 4382 8945 4398 8939
      4398 8917
TIME...MOT...LOC 2201Z 219DEG 18KT 4383 8938 

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

$$

GEHRING

294 
WWUS53 KMKX 092212
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
512 PM CDT TUE OCT 9 2018

WIC077-092230-
/O.CON.KMKX.TO.W.0018.000000T0000Z-181009T2230Z/
Marquette WI-
512 PM CDT TUE OCT 9 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
NORTHEASTERN MARQUETTE COUNTY...
    
At 512 PM CDT, a severe thunderstorm capable of producing a tornado 
was located north of Montello, or 12 miles south of Wautoma, moving 
northeast at 25 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.

Locations impacted include...
Neshkoro and Harrisville. 

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 4391 8917 4384 8930 4387 8943 4398 8939
      4398 8917
TIME...MOT...LOC 2212Z 222DEG 21KT 4388 8932 

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

$$

GEHRING

798 
WWUS53 KMKX 092226
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
526 PM CDT TUE OCT 9 2018

WIC077-092235-
/O.EXP.KMKX.TO.W.0018.000000T0000Z-181009T2230Z/
Marquette WI-
526 PM CDT TUE OCT 9 2018

...THE TORNADO WARNING FOR NORTHEASTERN MARQUETTE COUNTY WILL EXPIRE
AT 530 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

A Tornado Watch remains in effect until 1000 PM CDT for south central
Wisconsin.

LAT...LON 4391 8917 4384 8930 4387 8943 4398 8939
      4398 8917
TIME...MOT...LOC 2225Z 222DEG 31KT 4396 8921 

$$

GEHRING

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 9, 3:16 AM CDT	Flood Watch	MKX	Iowa, Lafayette, Sauk	32 hr
Oct 9, 2:31 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Lafayette	29 min
Oct 9, 2:54 PM CDT	Severe Thunderstorm Warning	MKX	Iowa	31 min
Oct 9, 3:10 PM CDT	Gale Watch	MKX		12 hr
Oct 9, 3:10 PM CDT	Small Craft Advisory	MKX		30 hr
Oct 9, 4:29 PM CDT	Tornado Warning	MKX	Iowa, Sauk	31 min
Oct 9, 4:47 PM CDT	Severe Thunderstorm Warning	MKX	Columbia	28 min
Oct 9, 4:56 PM CDT	Special Weather Statement	MKX	Sauk	34 min
Oct 9, 5:07 PM CDT	Severe Thunderstorm Warning	MKX	Marquette	38 min
Oct 9, 6:14 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Dodge	46 min
Oct 9, 6:43 PM CDT	Special Weather Statement	MKX	Green Lake	47 min
Oct 9, 6:52 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Green Lake	38 min

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.