Alert archive / Wisconsin / Tornado Warnings in 2021
Tornado Warning 3, NWS Green Bay, WI
NWS Green Bay, WI issued this tornado warning at Jul 28, 2021, 9:54 PM CDT for Portage County, Waupaca County, Wisconsin. It was in force for 36 min. 8 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, 9:54 PM CDT (02:54 UTC)
- Expired
- Jul 28, 2021, 10:30 PM CDT
- In force
- 36 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.5 in
Counties Portage County, WI, Waupaca County, WI
The radar
The Green Bay radar (KGRB), 88 km from the middle of the area, began a volume at 02:57 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, 9:55 PM CDT | TSTM WND DMG | 5 Ne Amherst Junction, WI | REPORT VIA SOCIAL MEDIA, TIME ESTIMATED. MANY TREES DOWN AT THE WISCONSIN ENVIRONMENTAL STATION IN AMHERST JUNCTION. |
| Jul 28, 10:14 PM CDT | TSTM WND DMG | 5 W Waupaca, WI | MULTIPLE SNAPPED PINE TREES. PICTURE VIA SOCIAL MEDIA. TIME ESTIMATED BY RADAR. |
| Jul 28, 10:16 PM CDT | TSTM WND DMG | 5 Ssw Waupaca, WI | SHINGLES BLOWN OFF ROOF. REPORT VIA SOCIAL MEDIA. TIME ESTIMATED BY RADAR. |
| Jul 28, 10:17 PM CDT | TSTM WND DMG | 2 Wsw Waupaca, WI | MULTIPLE TREES DOWN, SOME UPROOTED. FENCE BLOWN DOWN. REPORT VIA SOCIAL MEDIA. TIME ESTIMATED BY RADAR. |
| Jul 28, 10:17 PM CDT | TSTM WND DMG | 3 Wsw Waupaca, WI | SOME DOWNED TREES, BROKEN TREE LIMBS, AND TREE DEBRIS. REPORT VIA SOCIAL MEDIA. TIME ESTIMATED BY RADAR. |
| Jul 28, 10:20 PM CDT | TSTM WND DMG | 5 W Waupaca, WI | MULTIPLE SNAPPED PINE TREES. PICTURE VIA SOCIAL MEDIA |
| Jul 28, 10:22 PM CDT | TSTM WND DMG | 5 Ssw Waupaca, WI | SHINGLES BLOWN OFF ROOF. REPORT VIA SOCIAL MEDIA. TIME ESTIMATED BY RADAR. |
| Jul 28, 10:30 PM CDT | TSTM WND DMG | 5 Ne Amherst Junction, WI | REPORT VIA SOCIAL MEDIA, TIME ESTIMATED. MANY TREES DOWN AT THE WISCONSIN ENVIRONMENTAL STATION IN AMHERST JUNCTION. |
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 | SPC | 7 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.9 hours before the alert went out and 89 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.
- 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
The text
As transmitted.
607
WFUS53 KGRB 290254
TORGRB
WIC097-135-290330-
/O.NEW.KGRB.TO.W.0003.210729T0254Z-210729T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Green Bay WI
954 PM CDT Wed Jul 28 2021
The National Weather Service in Green Bay has issued a
* Tornado Warning for...
Southeastern Portage County in central Wisconsin...
Southwestern Waupaca County in northeastern Wisconsin...
* Until 1030 PM CDT.
* At 954 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Amherst, or 13 miles northwest of Waupaca, moving
southeast at 40 mph.
HAZARD...Tornado and ping pong ball 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...
Chain O' Lakes-King and Hartman Creek State Park around 1010 PM
CDT.
Waupaca around 1020 PM CDT.
Other locations impacted by this tornadic thunderstorm include Rural,
Lind Center, Emmons Creek Barrens, Scandinavia, Sheridan, Northland,
Nelsonville, Ogdensburg, King and Amherst Junction.
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 4451 8940 4460 8918 4429 8884 4425 8928
TIME...MOT...LOC 0254Z 329DEG 33KT 4450 8925
TORNADO...RADAR INDICATED
HAIL...1.50IN
$$
EB4 follow-up statements
986
WWUS53 KGRB 290302
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1002 PM CDT Wed Jul 28 2021
WIC097-135-290330-
/O.CON.KGRB.TO.W.0003.000000T0000Z-210729T0330Z/
Portage WI-Waupaca WI-
1002 PM CDT Wed Jul 28 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
SOUTHEASTERN PORTAGE AND SOUTHWESTERN WAUPACA COUNTIES...
At 1002 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Amherst, or 8 miles northwest of Waupaca, moving
southeast at 40 mph.
HAZARD...Tornado and ping pong ball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Hartman Creek State Park around 1010 PM CDT.
Chain O' Lakes-King around 1015 PM CDT.
Waupaca around 1020 PM CDT.
Other locations impacted by this tornadic thunderstorm include Rural,
Sheridan, Lind Center, Ogdensburg, King, Blaine, Iola, Emmons Creek
Barrens, Scandinavia and Weyauwega.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4444 8937 4454 8912 4429 8884 4425 8928
TIME...MOT...LOC 0302Z 329DEG 33KT 4444 8920
TORNADO...RADAR INDICATED
HAIL...1.50IN
$$
EB271
WWUS53 KGRB 290312
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1012 PM CDT Wed Jul 28 2021
WIC097-135-290330-
/O.CON.KGRB.TO.W.0003.000000T0000Z-210729T0330Z/
Portage WI-Waupaca WI-
1012 PM CDT Wed Jul 28 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
SOUTHEASTERN PORTAGE AND SOUTHWESTERN WAUPACA COUNTIES...
At 1012 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Chain O' Lakes-King, or over Waupaca, moving
southeast at 40 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...
Waupaca around 1020 PM CDT.
Other locations impacted by this tornadic thunderstorm include Rural,
Sheridan, Lind Center, King, Blaine, Emmons Creek Barrens,
Scandinavia and Weyauwega.
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!
&&
LAT...LON 4439 8935 4449 8919 4429 8884 4425 8928
TIME...MOT...LOC 0312Z 329DEG 33KT 4436 8913
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
EB908
WWUS53 KGRB 290318
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1018 PM CDT Wed Jul 28 2021
WIC097-290327-
/O.CAN.KGRB.TO.W.0003.000000T0000Z-210729T0330Z/
Portage WI-
1018 PM CDT Wed Jul 28 2021
...THE TORNADO WARNING FOR SOUTHEASTERN PORTAGE COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area herefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
central and northeastern Wisconsin.
LAT...LON 4428 8923 4436 8923 4438 8919 4429 8884
4426 8921
TIME...MOT...LOC 0317Z 329DEG 33KT 4432 8909
$$
WIC135-290330-
/O.CON.KGRB.TO.W.0003.000000T0000Z-210729T0330Z/
Waupaca WI-
1018 PM CDT Wed Jul 28 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
SOUTHWESTERN WAUPACA COUNTY...
At 1017 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Waupaca, moving southeast at 40 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
southwestern Waupaca County, including the following locations...
Rural, Lind Center, King, Emmons Creek Barrens and Weyauwega.
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!
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4428 8923 4436 8923 4438 8919 4429 8884
4426 8921
TIME...MOT...LOC 0317Z 329DEG 33KT 4432 8909
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
EB415
WWUS53 KGRB 290324
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1024 PM CDT Wed Jul 28 2021
WIC135-290333-
/O.EXP.KGRB.TO.W.0003.000000T0000Z-210729T0330Z/
Waupaca WI-
1024 PM CDT Wed Jul 28 2021
...THE TORNADO WARNING FOR SOUTHWESTERN WAUPACA COUNTY WILL EXPIRE AT
1030 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire. However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
central and northeastern Wisconsin.
Remember, a Severe Thunderstorm Warning still remains in effect for
Waupaca County.
LAT...LON 4428 8923 4436 8923 4438 8919 4429 8884
4426 8921
TIME...MOT...LOC 0323Z 329DEG 33KT 4427 8905
$$
EBThe 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, 8:58 PM CDT | Tornado Warning | GRB | Marathon | 32 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, 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, 2021Every tornado warning in 2021Tornadoes 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.