Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 13, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Apr 13, 2026, 5:42 PM CDT for Langlade County, Marathon County, Shawano County, Wisconsin. It was in force for 48 min. 1 report 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 13, 2026, 5:42 PM CDT (22:42 UTC)
- Expired
- Apr 13, 2026, 6:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Langlade County, WI, Marathon County, WI, Shawano County, WI
The radar
The Green Bay radar (KGRB), 115 km from the middle of the area, began a volume at 22:42 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 13, 5:55 PM CDT | HAIL 1 | 1 E Wausau, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 13 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
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 13, 3:11 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.7 hours before the alert went out and 327 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
- 8 J/kg
- Mixed-layer CIN
- -259 J/kg
- Mixed-layer LCL
- 1506 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 229 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
957
WUUS53 KGRB 132242
SVRGRB
WIC067-073-115-132330-
/O.NEW.KGRB.SV.W.0013.260413T2242Z-260413T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
542 PM CDT Mon Apr 13 2026
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for...
Southeastern Marathon County in central Wisconsin...
South Central Langlade County in north central Wisconsin...
Western Shawano County in northeastern Wisconsin...
* Until 630 PM CDT.
* At 542 PM CDT, a severe thunderstorm was located near Rib Mountain,
or 5 miles south of Wausau, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
* This severe thunderstorm will be near...
Weston, Rib Mountain, Wausau and Mosinee around 545 PM CDT. Antigo
around 620 PM CDT.
Other locations impacted by the severe thunderstorm include Camp
Phillips Scout Camp, Rothschild, Schofield, Rib Mountain State Park,
Evergreen, Peplin, Ringle, Sunset, Nutterville and Hatley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Report severe weather to your nearest law enforcement agency or the
National Weather Service office in Green Bay WI.
A Tornado Watch remains in effect until 1000 PM CDT Monday for a
portion of central Wisconsin.
&&
LAT...LON 4477 8972 4494 8982 4512 8905 4489 8896
TIME...MOT...LOC 2241Z 254DEG 35KT 4488 8964
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPC3 follow-up statements
193
WWUS53 KGRB 132256
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
556 PM CDT Mon Apr 13 2026
WIC067-073-115-132330-
/O.CON.KGRB.SV.W.0013.000000T0000Z-260413T2330Z/
Langlade WI-Marathon WI-Shawano WI-
556 PM CDT Mon Apr 13 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
EAST CENTRAL MARATHON, SOUTH CENTRAL LANGLADE AND WESTERN SHAWANO
COUNTIES...
At 556 PM CDT, a severe thunderstorm was located 6 miles east of
Weston, or 10 miles east of Wausau, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will be near...
Weston around 600 PM CDT. Antigo around 620 PM CDT.
Other locations impacted by the severe thunderstorm include Ringle,
Hatley, Sunset, Nutterville, Birnamwood, Norrie, Hogarty, Eland,
Aniwa and Elmhurst.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Report severe weather to your nearest law enforcement agency or the
National Weather Service office in Green Bay WI.
A Tornado Watch remains in effect until 1000 PM CDT Monday for a
portion of central Wisconsin.
&&
LAT...LON 4481 8960 4497 8971 4512 8905 4489 8896
TIME...MOT...LOC 2242Z 254DEG 35KT 4489 8962
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPC298
WWUS53 KGRB 132307
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
607 PM CDT Mon Apr 13 2026
WIC067-073-115-132330-
/O.CON.KGRB.SV.W.0013.000000T0000Z-260413T2330Z/
Langlade WI-Marathon WI-Shawano WI-
607 PM CDT Mon Apr 13 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
EAST CENTRAL MARATHON, SOUTH CENTRAL LANGLADE AND WESTERN SHAWANO
COUNTIES...
At 607 PM CDT, a severe thunderstorm was located 10 miles northwest
of Wittenberg, or 15 miles southwest of Antigo, moving east at 40
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will be near...
Antigo around 620 PM CDT.
Other locations impacted by the severe thunderstorm include
Birnamwood, Norrie, Hogarty, Hatley, Eland, Aniwa, Elmhurst and
Mattoon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Report severe weather to your nearest law enforcement agency or the
National Weather Service office in Green Bay WI.
A Tornado Watch remains in effect until 1000 PM CDT Monday for a
portion of central Wisconsin.
&&
LAT...LON 4484 8952 4499 8962 4512 8905 4489 8896
TIME...MOT...LOC 2256Z 254DEG 35KT 4492 8943
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPC708 WWUS53 KGRB 132325 SVSGRB Severe Weather Statement National Weather Service Green Bay WI 625 PM CDT Mon Apr 13 2026 WIC067-073-115-132335- /O.EXP.KGRB.SV.W.0013.000000T0000Z-260413T2330Z/ Langlade WI-Marathon WI-Shawano WI- 625 PM CDT Mon Apr 13 2026 ...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 630 PM CDT FOR EAST CENTRAL MARATHON, SOUTH CENTRAL LANGLADE AND WESTERN SHAWANO COUNTIES... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning will be allowed to expire. A Tornado Watch remains in effect until 1000 PM CDT Monday for a portion of central Wisconsin. && LAT...LON 4484 8952 4499 8962 4512 8905 4489 8896 TIME...MOT...LOC 2307Z 254DEG 35KT 4495 8929 $$ MPC
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Green Bay, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 13, 2:44 PM CDT, 2 hours 58 minutes earlier. Its key messages:
- Thunderstorms will develop late this afternoon and continue into the overnight hours with hail in excess of 2 inches, damaging winds and a tornado possible with the strongest storms. The highest risk is across central Wisconsin.
- Rainfall amounts of 1 to 3 inches across parts of central into east-central Wisconsin may lead to additional flood concerns through tonight.
- An active stretch of weather continues through late week with continued periods of showers and storms. The risk area for severe storms shifts south on Tuesday, but extends north into parts of central and east-central Wisconsin.
- Minor to moderate river flooding is ongoing or forecast to occur on several area rivers. Expect many rivers to rise this week due to additional rain and runoff from Upper Michigan, with the greatest impacts expected on the Menominee River, where some locations may see major flooding during the mid to late part of the week.
Area forecast discussion, Apr 13, 2:44 PM CDT, 2 hours 58 minutes before
Area Forecast Discussion
National Weather Service Green Bay WI
244 PM CDT Mon Apr 13 2026
.KEY MESSAGES...
- Thunderstorms will develop late this afternoon and continue
into the overnight hours with hail in excess of 2 inches,
damaging winds and a tornado possible with the strongest
storms. The highest risk is across central Wisconsin.
- Rainfall amounts of 1 to 3 inches across parts of central into
east-central Wisconsin may lead to additional flood concerns
through tonight.
- An active stretch of weather continues through late week with
continued periods of showers and storms. The risk area for
severe storms shifts south on Tuesday, but extends north into
parts of central and east-central Wisconsin.
- Minor to moderate river flooding is ongoing or forecast to
occur on several area rivers. Expect many rivers to rise this
week due to additional rain and runoff from Upper Michigan,
with the greatest impacts expected on the Menominee River,
where some locations may see major flooding during the mid to
late part of the week.
&&
.DISCUSSION...
Issued at 245 PM CDT Mon Apr 13 2026
Tonight: Severe Storms/Heavy Rain
Early afternoon surface analysis indicated a surface low over
central Nebraska with a warm front snaking eastward across
northern Iowa into central Wisconsin. MLCAPE has increased to
around 1000 J/kg across central Wisconsin with some inhibition
noted.
Late this afternoon, expect more focused storm
initiation/intensification generally in the vicinity of the
warm front and nose of the low- level jet. Surface-based
instability is maximized over central Wisconsin (1000-2000 J/kg)
by late this afternoon with effective shear around 40-50 kts.
Combined with steep lapse rates already sampled by the 18Z GRB
RAOB, the environment will be supportive of large to very large
hail. The tornado risk likely will be highest along the warm
front from west-central Wisconsin into perhaps central
Wisconsin as the low-level jet increases early this evening and
overlaps the warm front/instability axis. Damaging wind risk
will depend on the degree of upscale growth/organization of
storms. Overall, the severe weather risk lessens with northward
extent.
Precipitable water values remain near the top of climatology for
mid April. HREF probability matched mean 24-hr rainfall is in
the 1 to 3 inch range across parts of central into east-central
Wisconsin through tonight, on the nose of the low-level jet.
However, rainfall amounts will depend on the organization and
degree of training. This rainfall could exacerbate already
saturated soils.
Areas of fog may also develop overnight behind the storms.
Tuesday: Additional storms
The front slides south on Tuesday with the instability axis also
displaced south. The placement of the boundary will impact the
northward extent of severe weather during the
afternoon/evening. RAP hodographs show lesser low-level shear
although an elongated profile favorable for large hail and
winds. Currently the highest risk of severe storms is across
southern Wisconsin, but could extend into parts of east-central
Wisconsin.
Wednesday-Monday: Active into the weekend
Southwest flow aloft persists into late week keeping the area in
a warm, wet pattern. Another shortwave trough will bring
additional shower (40-80%) chances Wednesday into Thursday. A
more dynamic trough is slated to impact the region late Friday
into the weekend bringing additional widespread rainfall and
storms. The northward extent of greater instability is somewhat
uncertain with this system, impacting severe weather potential,
but this will be something to watch in the coming days. Drier
and cooler weather is expected behind this system for early next
week.
&&
.AVIATION /18Z TAFS THROUGH 18Z TUESDAY/...
Issued at 1251 PM CDT Mon Apr 13 2026
Widespread showers and storms will develop late this afternoon
into the overnight hours with MFVR/IFR conditions. Initial
storms may begin to initiate by 21-22Z today, becoming more
widespread this evening. Areas of fog/low clouds will likely
persist into Tuesday.
&&
.HYDROLOGY...
Issued at 245 PM CDT Mon Apr 13 2026
Flooding is expected to continue on several area rivers during
the week, and will be exacerbated by periodic heavy rainfall.
Runoff from Upper Michigan is still expected to bring moderate
to major flooding along the Menominee River, especially during
the mid to late part of the week. If you live near a river or
stream, keep a close eye on water levels this week and monitor
the latest Flood Warnings from the National Weather Service in
Green Bay.
&&
.GRB WATCHES/WARNINGS/ADVISORIES...
WI...Flood Watch through Tuesday morning for WIZ013-018>022-030-031-
035>040-045-048>050-073-074.
MARINE...None.
&&
DISCUSSION...JM
AVIATION...JM
HYDROLOGY...Kieckbusch/JMHazardous weather outlook, Apr 13, 2:51 PM CDT, 2 hours 51 minutes before
Hazardous Weather Outlook National Weather Service Green Bay WI 251 PM CDT Mon Apr 13 2026 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-142000- Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln- Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano- Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago- Calumet-Manitowoc-Southern Marinette County- Southern Oconto County- 251 PM CDT Mon Apr 13 2026 This Hazardous Weather Outlook is for north-central and northeast Wisconsin. .DAY ONE...Tonight Elevated water levels or flooding continue along some rivers. Severe storms, including heavy rainfall, large to very large hail, damaging winds and tornado or two are possible late this afternoon into tonight. The highest risk of severe storms is across central into east- central Wisconsin. Additional flooding may occur for areas that receive heavy rainfall tonight. .DAYS TWO THROUGH SEVEN...Tuesday through Monday There is a chance of severe thunderstorms south of a line from Wisconsin Rapids to Sturgeon bay during the late afternoon and evening on Tuesday. Large hail and strong winds will be the primary threats. Additional thunderstorms are possible Wednesday afternoon into Wednesday night, and again Friday night into Saturday. Elevated water levels and at least minor flooding will continue along many rivers through the week. Runoff from the Upper Peninsula will likely result in moderate to possibly major flooding on the Menominee River during the mid to late part of the week. .SPOTTER INFORMATION STATEMENT... Spotters should report severe weather and flooding to the National Weather Service in Green Bay. LMZ521-522-541>543-142000- The Bay of Green Bay south of a line from Cedar River MI to Rock Island Passage-Lake Michigan from Washington Island to Sheboygan- 251 PM CDT Mon Apr 13 2026 This Hazardous Weather Outlook is for portions of northwest Lake Michigan and the waters of Green Bay. .DAY ONE...Tonight Thunderstorms, some possibly strong to severe, are expected tonight. Areas of fog are possible. .DAYS TWO THROUGH SEVEN...Tuesday through Monday Thunderstorms will be possible at times Tuesday through Wednesday night, and again Friday night into Saturday. Severe storms will be possible Tuesday evening.
In the hours before
Special weather statement, Apr 13, 4:16 PM CDT, 1 hour 26 minutes before
Special Weather Statement
National Weather Service Green Bay WI
416 PM CDT Mon Apr 13 2026
WIZ030-036-132145-
Marathon WI-Portage WI-
416 PM CDT Mon Apr 13 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN PORTAGE AND
SOUTHEASTERN MARATHON COUNTIES UNTIL 445 PM CDT...
At 416 PM CDT, Doppler radar was tracking a strong thunderstorm 5
miles northeast of Stevens Point, moving northeast at 20 mph.
HAZARD...Wind gusts up to 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
The strong thunderstorm will be near...
Stevens Point and Whiting around 420 PM CDT.
Other locations impacted by this strong thunderstorm include Jordan,
Ellis, Polonia, Stockton, Park Ridge, Custer, Dewey Marsh Wildlife
Area, North Star, Shantytown and Holt.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4469 8963 4477 8962 4475 8922 4472 8922
4449 8932 4449 8965
TIME...MOT...LOC 2116Z 203DEG 15KT 4458 8948
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
KurimskiLocal storm report, Apr 13, 4:52 PM CDT, 50 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
452 PM CDT Mon Apr 13 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0434 PM Hail Ellis 44.58N 89.43W
04/13/2026 M1.00 Inch Portage WI Public
&&Special weather statement, Apr 13, 5:07 PM CDT, 35 minutes before
Special Weather Statement
National Weather Service Green Bay WI
507 PM CDT Mon Apr 13 2026
WIZ019>021-132230-
Northern Oconto County WI-Menominee WI-Langlade WI-
507 PM CDT Mon Apr 13 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHERN MENOMINEE...
SOUTHEASTERN LANGLADE AND NORTHERN OCONTO COUNTIES UNTIL 530 PM
CDT...
At 507 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles southwest of Gardner Dam Scout Camp, or 21 miles north of
Shawano, moving northeast at 35 mph.
HAZARD...Wind gusts up to 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
The strong thunderstorm will be near...
Neopit and Big Smokey Falls around 510 PM CDT. Gardner Dam Scout
Camp and White Lake around 515 PM CDT. Mountain around 525 PM CDT.
Other locations impacted by this strong thunderstorm include
Intersection Of Hwy 55 And County M, Langlade, Boulder Lake
Campground, Fredenberg Lake and Bagley Rapids Campground.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
Torrential rainfall is also occurring with this storm and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4512 8884 4531 8853 4513 8835 4494 8870
4505 8895
TIME...MOT...LOC 2207Z 232DEG 30KT 4506 8874
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
KurimskiLocal storm report, Apr 13, 5:13 PM CDT, 29 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
513 PM CDT Mon Apr 13 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0452 PM Hail Spencer 44.76N 90.28W
04/13/2026 M0.75 Inch Marathon WI Amateur Radio
&&Special weather statement, Apr 13, 5:23 PM CDT, 19 minutes before
Special Weather Statement
National Weather Service Green Bay WI
523 PM CDT Mon Apr 13 2026
WIZ013-019>021-073-132300-
Menominee WI-Northern Oconto County WI-Langlade WI-Southern
Marinette County WI-Northern Marinette County WI-
523 PM CDT Mon Apr 13 2026
...A STRONG THUNDERSTORM WILL IMPACT MENOMINEE...CENTRAL MARINETTE...
SOUTHEASTERN LANGLADE AND NORTHERN OCONTO COUNTIES UNTIL 6 PM CDT...
At 523 PM CDT, Doppler radar was tracking a strong thunderstorm over
Neopit, or 17 miles southeast of Antigo, moving northeast at 35 mph.
HAZARD...Penny size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to outdoor objects is possible.
The strong thunderstorm will be near...
Neopit around 525 PM CDT. White Lake and Big Smokey Falls around
540 PM CDT. Gardner Dam Scout Camp around 545 PM CDT.
Other locations impacted by this strong thunderstorm include Zoar,
Lake Noseum, Upper Bass Lake, Elton, Langlade, Boulder Lake
Campground, Bagley Rapids Campground, Boot Lake Campground and
Lakewood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
Torrential rainfall is also occurring with this storm and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4512 8897 4538 8849 4538 8843 4541 8843
4544 8837 4523 8815 4494 8872 4494 8897
4511 8898
TIME...MOT...LOC 2223Z 233DEG 32KT 4501 8887
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...<30 MPH
KurimskiLocal storm report, Apr 13, 5:35 PM CDT, 7 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
535 PM CDT Mon Apr 13 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0517 PM Hail Vesper 44.48N 89.96W
04/13/2026 M1.00 Inch Wood WI Trained Spotter
&&The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 11:33 PM CDT | River Flood Warning | GRB | Shawano, Waupaca | 5 days |
| Apr 13, 2:04 AM CDT | Flood Watch | GRB | Brown, Calumet, Door, Kewaunee, Langlade, Lincoln and 12 more | 49 hr |
| Apr 13, 7:30 AM CDT | River Flood Warning | GRB | Portage | 4 days |
| Apr 13, 7:31 AM CDT | River Flood Warning | GRB | Portage | 3 days |
| Apr 13, 10:53 AM CDT | River Flood Warning | GRB | Lincoln, Marathon | 11 hr |
| Apr 13, 3:49 PM CDT | Small Craft Advisory | GRB | 7 hr | |
| Apr 13, 4:10 PM CDT | River Flood Warning | GRB | Florence, Forest | 8 days |
| Apr 13, 4:16 PM CDT | Special Weather Statement | GRB | Portage | 29 min |
| Apr 13, 4:22 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage | 53 min |
| Apr 13, 4:43 PM CDT | Severe Thunderstorm Warning | GRB | Shawano, Waupaca | 62 min |
| Apr 13, 4:44 PM CDT | River Flood Warning | GRB | Marinette | 4 days |
| Apr 13, 4:46 PM CDT | Severe Thunderstorm Warning | GRB | Marathon | 59 min |
| Apr 13, 5:03 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Wood | 57 min |
| Apr 13, 5:07 PM CDT | Special Weather Statement | GRB | Menominee | 23 min |
| Apr 13, 5:22 PM CDT | Flash Flood Warning | GRB | Marathon, Portage, Wood | 5 hr |
| Apr 13, 5:23 PM CDT | Special Weather Statement | GRB | Menominee | 37 min |
| Apr 13, 5:41 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Wood | 48 min |
| Apr 13, 5:45 PM CDT | Marine Dense Fog Advisory | GRB | 67 hr | |
| Apr 13, 5:47 PM CDT | Areal Flood Advisory | GRB | Langlade, Menominee, Oconto, Shawano, Waupaca | 3 hr |
| Apr 13, 5:55 PM CDT | Areal Flood Advisory | GRB | Marathon, Portage | 3 hr |
| Apr 13, 5:59 PM CDT | Special Weather Statement | GRB | Marinette | 46 min |
| Apr 13, 6:19 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waupaca | 41 min |
| Apr 13, 6:37 PM CDT | Special Weather Statement | GRB | Brown, Outagamie | 38 min |
| Apr 13, 6:39 PM CDT | Special Weather Statement | GRB | Lincoln | 36 min |
| Apr 13, 6:44 PM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Marathon | 35 min |
| Apr 13, 6:49 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Shawano, Waupaca | 41 min |
| Apr 13, 6:55 PM CDT | Severe Thunderstorm Warning | GRB | Marathon | 29 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2026Every severe thunderstorm warning 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.