Alert archive / Wisconsin / Tornado Warnings in 2021

Tornado Warning 1, NWS Green Bay, WI

July 28, 2021Marathon County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jul 28, 2021, 8:58 PM CDT for Marathon County, Wisconsin. It was in force for 32 min. 10 reports 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: Jul 28, 2021, 8:58 PM CDT (01:58 UTC)
Expired: Jul 28, 2021, 9:30 PM CDT
In force: 32 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Marathon County, WI

The radar

The Green Bay radar (KGRB), 117 km from the middle of the area, began a volume at 01:57 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
Jul 28, 8:58 PM CDT	TSTM WND GST 60	Schofield, WI
Jul 28, 9:00 PM CDT	TSTM WND DMG	Rib Mountain, WI	MULTIPLE PINE TREES SNAPPED OFF AT 15 FEET. HOUSE DAMAGE.
Jul 28, 9:00 PM CDT	TSTM WND GST 62	Wausau, WI	AT THE AIRPORT.
Jul 28, 9:02 PM CDT	TSTM WND GST 63	Wausau, WI	AT THE AIRPORT.
Jul 28, 9:04 PM CDT	TSTM WND GST 78	Weston, WI	VIA SOCIAL MEDIA FROM WSAW TV-7.
Jul 28, 9:05 PM CDT	TSTM WND DMG	Wausau, WI	NUMEROUS TREES AND POWER LINES DOWN IN THE CITY OF WAUSAU.
Jul 28, 9:12 PM CDT	TSTM WND DMG	1 Nw Hatley, WI	BARN FLATTENED AND SPORADIC TREE DAMAGE. REPORT VIA SOCIAL MEDIA. TIME ESTIMATED BY RADAR.
Jul 28, 9:14 PM CDT	TSTM WND GST 54	Hatley, WI
Jul 28, 9:15 PM CDT	TSTM WND DMG	Hatley, WI	TREES AND POWER LINES DOWN.
Jul 28, 9:20 PM CDT	FUNNEL CLOUD	4 Nw Bevent, 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
Jul 28, 7:17 PM CDT	Severe Thunderstorm Watch PDS	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.0 hours before the alert went out and 119 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: 593 J/kg
Mixed-layer CIN: -264 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

642 
WFUS53 KGRB 290158
TORGRB
WIC073-290230-
/O.NEW.KGRB.TO.W.0001.210729T0158Z-210729T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Green Bay WI
858 PM CDT Wed Jul 28 2021

The National Weather Service in Green Bay has issued a

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

* Until 930 PM CDT.
    
* At 858 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Weston, or near Wausau, moving southeast at 45
  mph.

  HAZARD...Tornado and half dollar 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
  eastern Marathon County, including the following locations...
  Sunset, Ringle, Peplin, Camp Phillips Scout Camp, Pike Lake,
  Schofield, Rocky Corners, Nutterville, Rib Mountain State Park and
  Rothschild.

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.

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.

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

&&

LAT...LON 4510 8954 4485 8922 4483 8922 4469 8960
      4496 8970
TIME...MOT...LOC 0158Z 321DEG 40KT 4495 8954 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

EB

3 follow-up statements

131 
WWUS53 KGRB 290206
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
906 PM CDT Wed Jul 28 2021

WIC073-290230-
/O.CON.KGRB.TO.W.0001.000000T0000Z-210729T0230Z/
Marathon WI-
906 PM CDT Wed Jul 28 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
SOUTHEASTERN MARATHON COUNTY...
    
At 905 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Weston, or 10 miles southeast of Wausau, moving
southeast at 45 mph.

HAZARD...Tornado and half dollar 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
southeastern Marathon County, including the following locations...
Ringle, Camp Phillips Scout Camp, Pike Lake, Schofield, Rothschild,
Hatley and Evergreen.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

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.

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

&&

LAT...LON 4499 8951 4485 8922 4483 8922 4469 8960
      4491 8963
TIME...MOT...LOC 0205Z 321DEG 40KT 4488 8946 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

EB

374 
WWUS53 KGRB 290213
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
913 PM CDT Wed Jul 28 2021

WIC073-290230-
/O.CON.KGRB.TO.W.0001.000000T0000Z-210729T0230Z/
Marathon WI-
913 PM CDT Wed Jul 28 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
SOUTHEASTERN MARATHON COUNTY...
    
At 913 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Bevent, or 16 miles southeast of Wausau, moving
southeast at 45 mph.

HAZARD...Tornado and half dollar 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
southeastern Marathon County, including the following locations...
Ringle, Pike Lake and Hatley.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

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.

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

&&

LAT...LON 4493 8940 4485 8922 4483 8922 4469 8960
      4484 8957
TIME...MOT...LOC 0213Z 321DEG 40KT 4481 8938 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

EB

147 
WWUS53 KGRB 290225
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
925 PM CDT Wed Jul 28 2021

WIC073-290234-
/O.EXP.KGRB.TO.W.0001.000000T0000Z-210729T0230Z/
Marathon WI-
925 PM CDT Wed Jul 28 2021

...THE TORNADO WARNING FOR SOUTHEASTERN MARATHON COUNTY WILL EXPIRE
AT 930 PM CDT...
    
A new Tornado Warning has been issued for southeastern Marathon 
County until 945 pm. 

LAT...LON 4493 8940 4485 8922 4483 8922 4469 8960
      4484 8957
TIME...MOT...LOC 0224Z 321DEG 40KT 4472 8928 

$$

Kurimski

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 7:04 PM CDT	Special Weather Statement	GRB	Lincoln, Oneida, Vilas	41 min
Jul 28, 7:36 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon	39 min
Jul 28, 7:36 PM CDT	Severe Thunderstorm Warning	GRB	Oneida	39 min
Jul 28, 7:52 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln	53 min
Jul 28, 8:20 PM CDT	Special Weather Statement	GRB	Shawano	40 min
Jul 28, 8:37 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon, Shawano	53 min
Jul 28, 9:05 PM CDT	Areal Flood Advisory	GRB	Langlade, Lincoln, Marathon, Shawano	3 hr
Jul 28, 9:21 PM CDT	Tornado Warning	GRB	Marathon, Portage	24 min
Jul 28, 9:22 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Shawano, Waupaca	53 min
Jul 28, 9:54 PM CDT	Tornado Warning	GRB	Portage, Waupaca	36 min
Jul 28, 10:10 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago	65 min
Jul 28, 10:18 PM CDT	Severe Thunderstorm Warning	GRB	Wood	43 min
Jul 28, 10:35 PM CDT	Areal Flood Advisory	GRB	Marathon, Outagamie, Portage, Shawano, Waupaca, Waushara and 1 more	3 hr
Jul 28, 11:12 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca, Waushara, Winnebago	45 min
Jul 28, 11:38 PM CDT	Tornado Warning	GRB	Winnebago	16 min
Jul 29, 3:42 AM CDT	Small Craft Advisory	GRB		23 hr

Nearby

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

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.