Alert archive / Wisconsin / Tornado Warnings in 2024
Tornado Warning 4, NWS Green Bay, WI
NWS Green Bay, WI issued this tornado warning at May 21, 2024, 8:29 PM CDT for 8 counties in Wisconsin. It was in force for 46 min. 6 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
- May 21, 2024, 8:29 PM CDT (01:29 UTC)
- Expired
- May 21, 2024, 9:15 PM CDT
- In force
- 46 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Forest County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Shawano County, WI
The radar
The Green Bay radar (KGRB), 125 km from the middle of the area, began a volume at 01:30 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 |
|---|---|---|---|
| May 21, 8:30 PM CDT | TSTM WND DMG | 1 Se Harrison, WI | Trees and wires down near Harrison. Time based on radar. |
| May 21, 8:30 PM CDT | TSTM WND DMG | 1 Se Harrison, WI | Trees and wires down near Harrison. Time based on radar. |
| May 21, 8:30 PM CDT | TSTM WND DMG | 7 W Deerbrook, WI | Trees down in Township of Vilas. |
| May 21, 8:30 PM CDT | TSTM WND DMG | 7 W Deerbrook, WI | Trees down in Township of Vilas. |
| May 21, 8:48 PM CDT | TSTM WND DMG | 3 W Monico, WI | Trees down at the intersection of highways 8 and 45 in the Town of Monico. Time estimated from radar. |
| May 21, 8:48 PM CDT | TSTM WND DMG | 3 W Monico, WI | Trees down at the intersection of highways 8 and 45 in the Town of Monico. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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 |
|---|---|---|---|
| May 21, 6:42 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.5 hours before the alert went out and 127 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
- 442 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
376
WFUS53 KGRB 220129
TORGRB
WIC041-067-069-073-078-083-085-115-220215-
/O.NEW.KGRB.TO.W.0004.240522T0129Z-240522T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Green Bay WI
829 PM CDT Tue May 21 2024
The National Weather Service in Green Bay has issued a
* Tornado Warning for...
Northeastern Lincoln County in north central Wisconsin...
Southwestern Forest County in northeastern Wisconsin...
Eastern Marathon County in central Wisconsin...
Southeastern Oneida County in north central Wisconsin...
Northern Menominee County in northeastern Wisconsin...
Northern Oconto County in northeastern Wisconsin...
Langlade County in north central Wisconsin...
Western Shawano County in northeastern Wisconsin...
* Until 915 PM CDT.
* At 829 PM CDT, severe thunderstorms capable of producing both
tornadoes and extensive straight line wind damage were located
along a line extending from near Harrison to 7 miles south of
Parrish to near Antigo to near Wittenberg, moving northeast at 60
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.
* These dangerous storms will be near...
Antigo, Harrison, and Parrish around 835 PM CDT.
Veterans Memorial County Park around 840 PM CDT.
Neopit, Pearson, and Ma Ka Ja Wan Scout Reservation around 845 PM
CDT.
Crandon, White Lake, and Woodlawn around 855 PM CDT.
North Otter Creek Natural Area and Gardner Dam Scout Camp around
900 PM CDT.
Other locations impacted by these tornadic storms include Gagen, Lake
Noseum, Ackley Wildlife Area, Mattoon, Kelly Lynn Bog Natural Area,
Polar, Otter Springs Recreation Area, Choate, Birnamwood, and
Bavaria.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4583 8917 4567 8876 4552 8869 4502 8858
4471 8930 4506 8937 4523 8948 4537 8972
TIME...MOT...LOC 0129Z 234DEG 52KT 4543 8956 4530 8936 4513 8927 4485
8923
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Kieckbusch5 follow-up statements
676
WWUS53 KGRB 220136
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
836 PM CDT Tue May 21 2024
WIC073-220146-
/O.CAN.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Marathon WI-
836 PM CDT Tue May 21 2024
...THE TORNADO WARNING FOR EASTERN MARATHON COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until midnight CDT for central,
north central and northeastern Wisconsin.
&&
LAT...LON 4583 8917 4567 8876 4552 8869 4502 8858
4476 8920 4488 8923 4512 8922 4512 8928
4533 8936 4545 8962
TIME...MOT...LOC 0136Z 230DEG 56KT 4552 8946 4539 8925 4519 8916 4491
8912
$$
WIC041-067-069-078-083-085-115-220215-
/O.CON.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Lincoln WI-Forest WI-Oneida WI-Menominee WI-Oconto WI-Langlade WI-
Shawano WI-
836 PM CDT Tue May 21 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
NORTHEASTERN LINCOLN...SOUTHWESTERN FOREST...SOUTHEASTERN ONEIDA...
NORTHERN MENOMINEE...NORTHERN OCONTO...LANGLADE AND WESTERN SHAWANO
COUNTIES...
At 836 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located along a
line extending from near Harrison to 7 miles east of Parrish to near
Antigo to 6 miles north of Wittenberg, moving northeast at 65 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.
These dangerous storms will be near...
Antigo, Rhinelander, and Veterans Memorial County Park around 840
PM CDT.
Neopit, Pearson, and Ma Ka Ja Wan Scout Reservation around 845 PM
CDT.
Crandon and White Lake around 850 PM CDT.
Woodlawn and Gardner Dam Scout Camp around 855 PM CDT.
North Otter Creek Natural Area around 900 PM CDT.
Other locations impacted by these tornadic storms include Gagen, Lake
Noseum, Mattoon, Kelly Lynn Bog Natural Area, Polar, Otter Springs
Recreation Area, Choate, Birnamwood, Deerbrook, and Otter Lake
Campground.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
&&
LAT...LON 4583 8917 4567 8876 4552 8869 4502 8858
4476 8920 4488 8923 4512 8922 4512 8928
4533 8936 4545 8962
TIME...MOT...LOC 0136Z 230DEG 56KT 4552 8946 4539 8925 4519 8916 4491
8912
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Kieckbusch905
WWUS53 KGRB 220141
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
841 PM CDT Tue May 21 2024
WIC069-220150-
/O.CAN.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Lincoln WI-
841 PM CDT Tue May 21 2024
...THE TORNADO WARNING FOR NORTHEASTERN LINCOLN COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until midnight CDT for north
central and northeastern Wisconsin.
&&
LAT...LON 4583 8917 4567 8876 4552 8869 4502 8858
4479 8914 4522 8920 4537 8925 4549 8943
4555 8943 4556 8949
TIME...MOT...LOC 0140Z 233DEG 52KT 4555 8941 4542 8920 4522 8911 4493
8907
$$
WIC041-067-078-083-085-115-220215-
/O.CON.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Forest WI-Oneida WI-Menominee WI-Oconto WI-Langlade WI-Shawano WI-
841 PM CDT Tue May 21 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SOUTHWESTERN FOREST...SOUTHEASTERN ONEIDA...NORTHERN MENOMINEE...
NORTHERN OCONTO...LANGLADE AND WESTERN SHAWANO COUNTIES...
At 840 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located along a
line extending from 6 miles south of Rhinelander to 7 miles northwest
of Veterans Memorial County Park to near Antigo to 8 miles northeast
of Wittenberg, moving northeast at 60 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.
These dangerous storms will be near...
Neopit, Pearson, Veterans Memorial County Park, and Ma Ka Ja Wan
Scout Reservation around 845 PM CDT.
Crandon, White Lake, and Woodlawn around 855 PM CDT.
North Otter Creek Natural Area and Gardner Dam Scout Camp around
900 PM CDT.
Other locations impacted by these tornadic storms include Gagen, Boot
Lake Campground, Lake Noseum, Mattoon, Kelly Lynn Bog Natural Area,
Post Lake, Polar, Kempster, Otter Springs Recreation Area, and Upper
Bass Lake.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4583 8917 4567 8876 4552 8869 4502 8858
4479 8914 4522 8920 4537 8925 4549 8943
4555 8943 4556 8949
TIME...MOT...LOC 0140Z 233DEG 52KT 4555 8941 4542 8920 4522 8911 4493
8907
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Kieckbusch619
WWUS53 KGRB 220152
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
852 PM CDT Tue May 21 2024
WIC115-220201-
/O.CAN.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Shawano WI-
852 PM CDT Tue May 21 2024
...THE TORNADO WARNING FOR WESTERN SHAWANO COUNTY IS CANCELLED...
The storms which prompted the warning have weakened. Therefore, the
warning has been cancelled.
A Tornado Watch remains in effect until midnight CDT for north
central and northeastern Wisconsin.
&&
LAT...LON 4567 8876 4552 8869 4502 8858 4503 8904
4516 8905 4536 8910 4554 8917 4569 8886
TIME...MOT...LOC 0151Z 217DEG 57KT 4554 8908 4531 8901 4508 8896
$$
WIC041-067-078-083-085-220215-
/O.CON.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Forest WI-Oneida WI-Menominee WI-Oconto WI-Langlade WI-
852 PM CDT Tue May 21 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SOUTHWESTERN FOREST...SOUTHEASTERN ONEIDA...NORTHERN MENOMINEE...
NORTHERN OCONTO AND EASTERN LANGLADE COUNTIES...
At 851 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located along a
line extending from 9 miles west of Crandon to near Pearson to 9
miles northwest of Neopit, moving northeast at 65 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.
These dangerous storms will be near...
Crandon, Pearson, and Ma Ka Ja Wan Scout Reservation around 855 PM
CDT.
White Lake and Woodlawn around 900 PM CDT.
North Otter Creek Natural Area around 905 PM CDT.
Other locations impacted by these tornadic storms include Bryant,
Boot Lake Campground, Lake Noseum, Post Lake, Polar, Phlox, Otter
Springs Recreation Area, Lawrence Lake Natural Area, Pelican Lake,
and Nashville.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
&&
LAT...LON 4567 8876 4552 8869 4502 8858 4503 8904
4516 8905 4536 8910 4554 8917 4569 8886
TIME...MOT...LOC 0151Z 217DEG 57KT 4554 8908 4531 8901 4508 8896
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Kieckbusch373
WWUS53 KGRB 220202
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
902 PM CDT Tue May 21 2024
WIC085-220212-
/O.CAN.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Oneida WI-
902 PM CDT Tue May 21 2024
...THE TORNADO WARNING FOR SOUTHEASTERN ONEIDA COUNTY IS CANCELLED...
The storms which prompted the warning have weakened. Therefore, the
warning has been cancelled.
A Tornado Watch remains in effect until midnight CDT for north
central and northeastern Wisconsin.
&&
LAT...LON 4567 8876 4552 8869 4502 8858 4503 8885
4518 8889 4538 8895 4564 8896 4569 8886
TIME...MOT...LOC 0202Z 233DEG 52KT 4556 8888 4538 8888 4515 8880
$$
WIC041-067-078-083-220215-
/O.CON.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Forest WI-Menominee WI-Oconto WI-Langlade WI-
902 PM CDT Tue May 21 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SOUTHWESTERN FOREST...NORTHEASTERN MENOMINEE...NORTHERN OCONTO AND
EASTERN LANGLADE COUNTIES...
At 902 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located along a
line extending from Crandon to near Ma Ka Ja Wan Scout Reservation to
White Lake, moving northeast at 60 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.
These dangerous storms will be near...
Crandon, White Lake, North Otter Creek Natural Area, Woodlawn, and
Gardner Dam Scout Camp around 905 PM CDT.
Other locations impacted by these tornadic storms include Argonne,
Boot Lake Campground, Elton, Freeman, Otter Springs Recreation Area,
Pickerel, Boulder Lake Campground, Choate, Hollister, and Langlade.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
&&
LAT...LON 4567 8876 4552 8869 4502 8858 4503 8885
4518 8889 4538 8895 4564 8896 4569 8886
TIME...MOT...LOC 0202Z 233DEG 52KT 4556 8888 4538 8888 4515 8880
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Kieckbusch974
WWUS53 KGRB 220212
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
912 PM CDT Tue May 21 2024
WIC041-067-078-083-220221-
/O.EXP.KGRB.TO.W.0004.000000T0000Z-240522T0215Z/
Forest WI-Menominee WI-Oconto WI-Langlade WI-
912 PM CDT Tue May 21 2024
...THE TORNADO WARNING FOR SOUTHWESTERN FOREST...NORTHEASTERN
MENOMINEE...NORTHERN OCONTO AND EASTERN LANGLADE COUNTIES WILL EXPIRE
AT 915 PM CDT...
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and
a Severe Thunderstorm Warning remains in effect for part of the
area. However, gusty winds are still possible with these
thunderstorms.
A Tornado Watch remains in effect until midnight CDT for north
central and northeastern Wisconsin.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Green Bay.
&&
LAT...LON 4567 8876 4552 8869 4502 8858 4503 8885
4518 8889 4538 8895 4564 8896 4569 8886
TIME...MOT...LOC 0211Z 234DEG 52KT 4561 8879 4543 8879 4520 8871
$$
KieckbuschWhat forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at May 21, 6:52 PM CDT, 1 hour 37 minutes earlier. Its key messages:
- Impactful strong to severe storms are anticipated across portions of the area this evening. The areas most likely to see severe weather will be central to east-central Wisconsin. Damaging winds, large hail, and a few tornadoes will be possible with the stronger storms.
- Heavy rainfall through this evening may also pose a flooding concern, especially as areas of central WI have already received an inch of rainfall.
- Showers and thunderstorms possible at times Wednesday and Thursday, mainly across northern Wisconsin.
- Better chance for widespread showers and thunderstorms Friday into Friday night.
Area forecast discussion, May 21, 6:52 PM CDT, 1 hour 37 minutes before
Area Forecast Discussion National Weather Service Green Bay WI 652 PM CDT Tue May 21 2024 Updated aviation portion for 00Z TAF issuance .KEY MESSAGES... - Impactful strong to severe storms are anticipated across portions of the area this evening. The areas most likely to see severe weather will be central to east-central Wisconsin. Damaging winds, large hail, and a few tornadoes will be possible with the stronger storms. - Heavy rainfall through this evening may also pose a flooding concern, especially as areas of central WI have already received an inch of rainfall. - Showers and thunderstorms possible at times Wednesday and Thursday, mainly across northern Wisconsin. - Better chance for widespread showers and thunderstorms Friday into Friday night. && .DISCUSSION... Issued at 258 PM CDT Tue May 21 2024 Short Term...Tonight and Wednesday Initial convection ahead of the warm front The first round of convection is on its way this afternoon, with showers and a few thunderstorms developing north and ahead of the warm front. These initial storms remain capable of producing moderate to heavy rainfall, some small hail, and the occasional wind gust up to 30 to 40 mph. The bigger concern will be a second round this evening, as a second round of strong storms is brought in along a surface cold front. This line is already in development on radar in western Iowa this afternoon, and is expected to steadily cross towards and into Wisconsin by the early evening. Although instability remains on the more modest side in our area, with MUCAPE around 1000 J/kg, the remaining dynamics remain impressive. Bulk shear and helicity values remain incredibly high, and wind fields support these storms to be quite fast moving once they arrive in the evening. Therefore, one of the primary concerns will be strong wind gusts reaching the surface. Additionally, low LCL heights and high helicity values associated with these storms will support tornado-genesis, especially in portions of western to central Wisconsin. North and east of these areas the tornado threat quickly drops off, but again wind is expected to be the predominant concern, with gusts up to 60 to 70 mph possible at times. Finally, localized flooding can't be discounted with these storms either, as some portions of central WI have already reported near an inch of rainfall from this morning and although the next round of storms will be fast moving, they will also bring additional heavy rainfall. The main uncertainties between this afternoon and the evening remain the norther extent of the warm front and whether any additional development precedes the arrival of the second line. Clearing on satellite evident in southern Minnesota and Wisconsin do support this front to begin lifting towards central Wisconsin by this evening, which would also support stronger storm development. If any storms do develop ahead of the main line as well, they too may ingest enough ambient shear and helicity to be a severe concern, but these will be more localized than the longer, stronger line. Finally, as the system departs, dry conditions are expected to return to the region fairly quickly overnight. Winds however will remain gusty, with some gusts up to 25 to 35 mph still possible through the overnight into Wednesday. Cooler conditions follow for tomorrow. Long Term...Wednesday Night Through Tuesday Zonal flow is expected to persist over the region through this forecast period with a few embedded shortwave/troughs bringing chances for showers and storms at times. Timing out these shortwave/troughs will be the main forecast challenge. The greatest confidence for showers and storms appears to be Friday into Friday evening from a cold frontal passage. Models suggest marginally severe parameters will be present as the cold front moves through, but it is too early to determine the full severe potential at this time. High pressure will follow this cold front for Saturday into Saturday night, leaving dry conditions in the forecast. Models are not in agreement with the next chance for showers and storms due to disagreement with the evolution of two mid-level shortwaves riding along the zonal flow late this weekend. This translates to chances for showers and storms from Sunday through Tuesday, but anticipate the timing to become more confined over the coming days. && .AVIATION...for 00Z TAF Issuance Issued at 645 PM CDT Tue May 21 2024 A line of strong to severe thunderstorms will move across much of the area this evening. The storms will impact KCWA/KAUW/KRHI between 00z and 02z and then to KGRB/KATW/KMTW between 02z and 04z and then should exit the lakeshore by 05z. CIGS will vary from IFR across portions of north-central and central to VFR across the east outside the thunderstorm activity this evening. Low CIGS in the MVFR will spread eastward overnight reaching east- central Wisconsin overnight. CIGS will gradually improve on Wednesday. Unusually gusty winds for the night time hours are expected tonight with gusty winds continuing through much of the day Wednesday. && .GRB WATCHES/WARNINGS/ADVISORIES... None. && DISCUSSION.....Uhlmann/Kruk AVIATION.......Eckberg
Hazardous weather outlook, May 21, 7:14 PM CDT, 1 hour 15 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Green Bay WI 714 PM CDT Tue May 21 2024 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-230015- 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- 714 PM CDT Tue May 21 2024 This Hazardous Weather Outlook is for north-central and northeast Wisconsin. .DAY ONE...Tonight A tornado watch is in effect south of a line from Rhinelander to Iron Mountain. A line of severe thunderstorms will cross the area from west to east this evening. Damaging winds, large hail, and a few tornadoes will be possible with the stronger storms. Heavy rain and localized flooding is also possible. The heavy rainfall will also result in rising river and stream levels tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Tuesday There is a chance of thunderstorms Wednesday and Thursday, mainly across northern Wisconsin. Severe weather is not expected with any of these storms. There is a better chance for widespread thunderstorms Friday into Friday night. However, it is too early to determine whether any of these storms may become severe. .SPOTTER INFORMATION STATEMENT... Spotters are asked to report any severe weather this evening, including large hail, winds and/or wind damage, and any tornadoes or rotating wall clouds. LMZ521-522-541>543-230015- The Bay of Green Bay south of a line from Cedar River MI to Rock Island Passage-Lake Michigan from Washington Island to Sheboygan- 714 PM CDT Tue May 21 2024 This Hazardous Weather Outlook is for portions of northwest Lake Michigan and the waters of Green Bay. .DAY ONE...Tonight Dense marine fog will reduce visibilities at times below one nautical mile, and at times down to a few hundred feet. Thunderstorms later this evening should help dissipate the fog. A tornado watch is in effect until noon for the southern portion of the Bay of Green Bay and the nearshore waters of Lake Michigan from Washington Island to Sheboygan. Confidence is increasing in potential for impactful severe weather across much of the forecast area this evening. The strongest storms will be capable of producing damaging winds, large hail, and a few waterspouts, which will all pose a threat to mariners. Conditions may be hazardous to small craft tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Tuesday Conditions will continue to be hazardous to small craft through Wednesday afternoon. There is a chance for thunderstorms Friday afternoon into Friday night. Any of these storms may pose a hazard to mariners. Eckberg/Kruk
In the hours before
Local storm report, May 21, 8:02 PM CDT, 27 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
802 PM CDT Tue May 21 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0739 PM Tstm Wnd Dmg 3 NNW Bakerville 44.66N 90.23W
05/21/2024 Wood WI Trained Spotter
Trees down in Marshfield. Wren and Robin
roads partially blocked.
&&
JLALocal storm report, May 21, 8:05 PM CDT, 24 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
805 PM CDT Tue May 21 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0757 PM Tstm Wnd Gst Wisconsin Rapids Airpor 44.36N 89.84W
05/21/2024 M63 MPH Wood WI ASOS
Reported at KISW - Alexander Field South
Wood County Airport.
&&Local storm report, May 21, 8:06 PM CDT, 23 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
806 PM CDT Tue May 21 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 PM Tstm Wnd Dmg Stratford 44.79N 90.08W
05/21/2024 Marathon WI Public
Trees down.
&&
JLALocal storm report, May 21, 8:15 PM CDT, 14 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
815 PM CDT Tue May 21 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0809 PM Tstm Wnd Dmg 5 SW Whiting 44.44N 89.65W
05/21/2024 Portage WI Trained Spotter
Street signs bent over at the intersection
of highways 54 and F to west of Plover.
&&
JLALocal storm report, May 21, 8:17 PM CDT, 12 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
817 PM CDT Tue May 21 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0807 PM Tstm Wnd Gst Wausau Downtown Airport 44.93N 89.63W
05/21/2024 M60 MPH Marathon WI Public
&&Local storm report, May 21, 8:20 PM CDT, 9 minutes before
Preliminary Local Storm Report
National Weather Service Green Bay WI
820 PM CDT Tue May 21 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0745 PM Tstm Wnd Gst 2 SSW Stratford 44.76N 90.10W
05/21/2024 M58 MPH Marathon WI Mesonet
Measured at the Marshfield Wisconet station.
&&
JLAThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:19 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Wood | 26 min |
| May 21, 7:41 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 49 min |
| May 21, 7:42 PM CDT | Tornado Warning | GRB | Marathon | 33 min |
| May 21, 8:00 PM CDT | Tornado Warning | GRB | Langlade, Lincoln, Marathon | 30 min |
| May 21, 8:03 PM CDT | Tornado Warning | GRB | Waushara | 27 min |
| May 21, 8:18 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Marathon, Menominee, Outagamie, Portage, Shawano and 3 more | 57 min |
| May 21, 8:24 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Langlade, Lincoln, Oneida | 51 min |
| May 21, 8:33 PM CDT | Tornado Warning | GRB | Winnebago | 15 min |
| May 21, 8:41 PM CDT | Tornado Warning | GRB | Winnebago | 9 min |
| May 21, 8:47 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Calumet, Manitowoc, Outagamie, Waupaca, Winnebago | 58 min |
| May 21, 8:48 PM CDT | Special Marine Warning | GRB | 117 min | |
| May 21, 8:54 PM CDT | Special Marine Warning | GRB | 2 hr | |
| May 21, 9:07 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Marinette, Menominee, Oconto, Shawano | 53 min |
| May 21, 9:11 PM CDT | Areal Flood Advisory | GRB | Portage, Wood | 3 hr |
| May 21, 9:11 PM CDT | Special Weather Statement | GRB | Florence, Forest | 34 min |
| May 21, 9:15 PM CDT | Special Marine Warning | GRB | 2 hr | |
| May 21, 9:21 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Calumet, Door, Kewaunee, Manitowoc | 39 min |
| May 21, 9:44 PM CDT | Special Weather Statement | GRB | Brown, Calumet | 46 min |
| May 21, 9:59 PM CDT | Severe Thunderstorm Warning | GRB | Door | 46 min |
| May 21, 10:44 PM CDT | Special Weather Statement | GRB | Calumet, Outagamie, Winnebago | 46 min |
| May 21, 11:12 PM CDT | Special Marine Warning | GRB | 63 min | |
| May 21, 11:25 PM CDT | Special Weather Statement | GRB | Kewaunee, Manitowoc | 65 min |
| May 22, 5:46 AM CDT | River Flood Warning | GRB | Wood | 23 hr |
| May 22, 9:42 AM CDT | Beach Hazards Statement | GRB | Door, Kewaunee, Manitowoc | 6 hr |
| May 22, 5:10 PM CDT | Special Weather Statement | GRB | Shawano, Waupaca | 50 min |
| May 22, 5:59 PM CDT | Special Weather Statement | GRB | Brown | 46 min |
| May 22, 6:15 PM CDT | Special Weather Statement | GRB | Brown, Kewaunee | 45 min |
| May 22, 6:19 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Kewaunee | 26 min |
| May 22, 6:37 PM CDT | Special Marine Warning | GRB | 53 min | |
| May 22, 6:41 PM CDT | Special Weather Statement | GRB | Kewaunee | 34 min |
Nearby
Tornado Warnings in Wisconsin, 2024Every tornado warning in 2024Tornadoes in 2024
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.