Tornado Warning 9, NWS Green Bay, WI

Issued

Aug 11, 2021, 1:40 PM CDT (18:40 UTC)

Expired

Aug 11, 2021, 2:00 PM CDT

In force

20 min

Issued by

NWS Green Bay, WI

Area

Storm-based polygon

Tornado

Radar indicated

Hail

1.0 in

County Marathon County, WI

The Green Bay radar (KGRB), 146 km from the middle of the area, began a volume at 18:40 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.

065 
WFUS53 KGRB 111840
TORGRB
WIC073-111930-
/O.NEW.KGRB.TO.W.0009.210811T1840Z-210811T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Green Bay WI
140 PM CDT Wed Aug 11 2021

The National Weather Service in Green Bay has issued a

* Tornado Warning for...
  Southwestern Marathon County in central Wisconsin...

* Until 230 PM CDT.
    
* At 139 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 14 miles northeast of Marshfield, or 19 miles southwest
  of Wausau, moving east at 35 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...
  Mosinee and Weston.

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4478 9010 4489 9006 4492 8960 4471 8965
TIME...MOT...LOC 1839Z 275DEG 22KT 4484 9001 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Cooley

262 
WWUS53 KGRB 111900
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
200 PM CDT Wed Aug 11 2021

WIC073-111909-
/O.CAN.KGRB.TO.W.0009.000000T0000Z-210811T1930Z/
Marathon WI-
200 PM CDT Wed Aug 11 2021

...THE TORNADO WARNING FOR SOUTHWESTERN MARATHON 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 gusty winds 
to 50 mph are still possible with this thunderstorm.

A Tornado Watch remains in effect until 800 PM CDT for central
Wisconsin.

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

LAT...LON 4478 9010 4489 9006 4492 8960 4471 8965
TIME...MOT...LOC 1858Z 275DEG 22KT 4483 8983 

$$

Cooley

Tornado Warnings in Wisconsin, 2021Every tornado warning in 2021Tornadoes in 2021

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.