Alert archive / Wisconsin / Tornado Warnings in 2026

Tornado Warning 9, NWS Green Bay, WI

April 17, 2026Langlade County, Menominee County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Apr 17, 2026, 5:30 PM CDT for Langlade County, Menominee County, Wisconsin. It was in force for 45 min. 3 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: Apr 17, 2026, 5:30 PM CDT (22:30 UTC)
Expired: Apr 17, 2026, 6:15 PM CDT
In force: 45 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Langlade County, WI, Menominee County, WI

The radar

The Green Bay radar (KGRB), 94 km from the middle of the area, began a volume at 22:31 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
Apr 17, 5:38 PM CDT	FUNNEL CLOUD	1 Nnw Phlox, WI	call center called to report a funnel cloud going north east of Phlox.
Apr 17, 5:40 PM CDT	FUNNEL CLOUD	4 Wnw Elton, WI	Langlade dispatch called saying funnel cloud seen southwest of Elton.
Apr 17, 6:19 PM CDT	FUNNEL CLOUD	2 Ssw White Lake, WI	Call from Shawano county dispatch reporting funnel cloud by white lake.

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
Apr 17, 12:40 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.5 hours before the alert went out and 367 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2301 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

098 
WFUS53 KGRB 172230
TORGRB
WIC067-078-172315-
/O.NEW.KGRB.TO.W.0009.260417T2230Z-260417T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Green Bay WI
530 PM CDT Fri Apr 17 2026

The National Weather Service in Green Bay has issued a

* Tornado Warning for...
  Southeastern Langlade County in north central Wisconsin...
  Northwestern Menominee County in northeastern Wisconsin...

* Until 615 PM CDT.

* At 530 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles southeast of Antigo, moving northeast at 30
  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 tornado will be near...
  White Lake around 600 PM CDT. Gardner Dam Scout Camp around 605 PM
  CDT.

Other locations impacted by the tornado include Phlox, Lake Noseum,
Zoar, Polar, Upper Bass Lake, Elton, Langlade, Hollister and Lily.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from 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 4503 8898 4503 8919 4512 8911 4532 8879
      4514 8864 4502 8893
TIME...MOT...LOC 2229Z 231DEG 25KT 4504 8906

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Kurimski

2 follow-up statements

008 
WWUS53 KGRB 172250
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
550 PM CDT Fri Apr 17 2026

WIC067-078-172315-
/O.CON.KGRB.TO.W.0009.000000T0000Z-260417T2315Z/
Langlade WI-Menominee WI-
550 PM CDT Fri Apr 17 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR
SOUTHEASTERN LANGLADE AND NORTHWESTERN MENOMINEE COUNTIES...

At 550 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles west of White Lake, or 13 miles east of Antigo,
moving northeast at 30 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 tornado will be near...
  White Lake around 600 PM CDT. Gardner Dam Scout Camp around 605 PM
  CDT.

Other locations impacted by the tornado include Elton, Upper Bass
Lake, Polar, Langlade, Hollister and Lily.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from 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 4503 8898 4503 8919 4512 8911 4532 8879
      4514 8864 4502 8893
TIME...MOT...LOC 2230Z 231DEG 27KT 4505 8905

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

$$

Kurimski

504 
WWUS53 KGRB 172310
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
610 PM CDT Fri Apr 17 2026

WIC067-078-172320-
/O.EXP.KGRB.TO.W.0009.000000T0000Z-260417T2315Z/
Langlade WI-Menominee WI-
610 PM CDT Fri Apr 17 2026

...TORNADO WARNING WILL EXPIRE AT 615 PM CDT FOR SOUTHEASTERN
LANGLADE AND NORTHWESTERN MENOMINEE COUNTIES...

The Tornado Warning that was previously in effect has been reissued
for Langlade County and is in effect until 700 PM CDT. Please refer
to that bulletin for the latest severe weather information.

A Tornado Watch remains in effect until 800 PM CDT for portions of
north central and northeast Wisconsin.

&&

LAT...LON 4503 8898 4503 8919 4512 8911 4532 8879
      4514 8864 4502 8893
TIME...MOT...LOC 2250Z 231DEG 27KT 4514 8888

$$

Kurimski

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 8:36 PM CDT	Dense Fog Advisory	GRB	Brown, Calumet, Door, Forest, Kewaunee, Langlade and 9 more	12 hr
Apr 16, 8:37 PM CDT	Marine Dense Fog Advisory	GRB		31 hr
Apr 17, 2:56 AM CDT	Small Craft Advisory	GRB		31 hr
Apr 17, 2:53 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Wood	82 min
Apr 17, 3:00 PM CDT	Tornado Warning	GRB	Wood	60 min
Apr 17, 3:27 PM CDT	Severe Thunderstorm Warning	GRB	Wood	48 min
Apr 17, 3:40 PM CDT	Special Weather Statement	GRB	Lincoln	65 min
Apr 17, 3:52 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	53 min
Apr 17, 4:10 PM CDT	Flash Flood Warning	GRB	Marathon, Wood	5 hr
Apr 17, 4:11 PM CDT	Special Weather Statement	GRB	Winnebago	34 min
Apr 17, 4:19 PM CDT	Severe Thunderstorm Warning	GRB	Oneida	24 min
Apr 17, 4:21 PM CDT	Tornado Warning	GRB	Marathon	39 min
Apr 17, 4:36 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln	39 min
Apr 17, 4:44 PM CDT	Tornado Warning Tornado observed	GRB	Marathon	32 min
Apr 17, 4:48 PM CDT	Tornado Warning	GRB	Lincoln	21 min
Apr 17, 4:50 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln	30 min
Apr 17, 4:52 PM CDT	Tornado Warning	GRB	Langlade, Lincoln	30 min
Apr 17, 5:00 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida	45 min
Apr 17, 5:06 PM CDT	Tornado Warning Tornado observed	GRB	Langlade, Marathon, Shawano	39 min
Apr 17, 5:14 PM CDT	Tornado Warning	GRB	Wood	61 min
Apr 17, 5:19 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Langlade, Oneida	18 min
Apr 17, 5:24 PM CDT	Special Weather Statement	GRB	Vilas	36 min
Apr 17, 5:27 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Marathon, Menominee, Portage, Shawano, Waupaca	37 min
Apr 17, 5:28 PM CDT	Tornado Warning	GRB	Vilas	17 min
Apr 17, 5:48 PM CDT	Tornado Warning	GRB	Shawano	9 min
Apr 17, 5:58 PM CDT	Severe Thunderstorm Warning	GRB	Vilas	32 min
Apr 17, 6:06 PM CDT	Tornado Warning	GRB	Langlade, Oconto	28 min
Apr 17, 6:26 PM CDT	Special Weather Statement	GRB	Marathon, Portage, Wood	64 min
Apr 17, 6:43 PM CDT	Special Weather Statement	GRB	Oneida	32 min
Apr 17, 6:52 PM CDT	Flash Flood Warning	GRB	Langlade, Marathon, Menominee, Shawano	2 hr
Apr 17, 6:58 PM CDT	Severe Thunderstorm Warning	GRB	Oneida, Vilas	32 min

Nearby

Tornado Warnings in Wisconsin, 2026 Every tornado warning in 2026 Tornadoes in 2026

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.