Hot temperatures and high humidity are forecast to continue across much of east Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Friday could bring areas of flooding across parts of the central Plains into the upper Midwest and Four Corners states. Read More >
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Overview
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Tornadoes/Storm Survey Findings
Select a tornado from the table to zoom into the track and view more information. The default table view is limited to 8 tracks, but can be scrolled by a mouse wheel or dynamically expanded. Additionally, the table can fill the entire window by clicking the small circular expanding arrow icon at the very top right of the table and returned to its original size by clicking the button again. The side information panel that opens over the map can be closed using the "X" on the upper right corner of the pop-up. Zoom into the map and click damage points to see detailed information and pictures from the surveys.
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NOTE: Times shown below are local to your device's time zone. |
The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:
| EF0 Weak 65-85 mph |
EF1 Moderate 86-110 mph |
EF2 Significant 111-135 mph |
EF3 Severe 136-165 mph |
EF4 Extreme 166-200 mph |
EF5 Catastrophic 200+ mph |
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| Tornadoes that fail to impact any ratable damage indicators on the EF-Scale are rated EF-Unknown (EF-U) | |||||
1.) Pontiac Tornado
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Summary: This tornado began just south of 4H Park Rd. on the northwest side of Pontiac and immediately moved northeast across the Motorola and Vermillion Estates subdivisions. There, it caused roofing and siding damage to a number of houses, apartments, and manufactured homes. Two houses had large portions of roofing blown off, leaving their attics exposed. The tornado then crossed IL Route 23 and produced additional siding and fascia damage to a few manufactured homes in the Redwood mobile home park before ending north of E 1830 North Rd. The tornado also damaged a number of trees in its path. |
2.) Gibson City Tornado
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Summary: A large, west-facing section of the metal roof of the southernmost building at the GDM (formerly Dairyland Seed) facility south of Gibson City was peeled eastward as a strengthening miniature supercell storm passed overhead. While no condensation funnel was evident, eyewitnesses reported visible rotation in the clouds passing over the facility and debris from the impacted building getting lofted and swirled around in the air before being deposited in the field to the east of the facility, which would suggest that a brief tornado occurred here. This is further corroborated by an apparent tornado debris signature (TDS) sampled by the KILX radar that appeared shortly after the associated circulation passed over this location. This tornado appeared to only cause high-end EF-0 damage to the one building at the GDM facility before ending a few hundred yards to the east-northeast. |
3.) West of Clifton Tornado
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Summary: This tornado formed west of Clifton near the intersection of N 400 East Rd. and E 2900 North Rd. Three power poles were snapped as the tornado tracked across E 2900 North Rd. At a property at the intersection of N 500 East Rd. and E 2900 North Rd., tree damage was noted, and roofing material was peeled off of a house. As the tornado continued to move east-northeastward and crossed N 600 East Rd. and E 2950 North Rd., two farm outbuildings had portions of their roofs ripped off at the same property. Additional tree damage was also noted. The tornado likely lifted before reaching N 700 East Rd. |
4.) Clifton - St. Anne Tornado
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Summary: This tornado likely began in a field approximately two miles east of Clifton based on a tight gate-to-gate velocity couplet sampled by the KLOT radar. In the first few minutes of its lifespan, the tornado largely remained over open fields and may have briefly lifted as little damage was observed near and west of U.S. Highway 45/52. However, the tornado strengthened as it tracked across and east of N 1500 East Rd. At the intersection of E 3100 North Rd. and N 1600 East Rd., a residence had a sizable portion of its eastward-facing roof torn off and deposited in the downstream field. Several trees at this property were damaged as well, including one pine tree whose top half was snapped off and tossed nearly 100 yards to the east. At the adjacent property to the east-northeast, a barn was shifted off of its foundation and had a portion of its roof peeled. As the tornado reached the Iroquois River, it tore the roof off of a garage and peeled roofing material off of a house at a property next to the river. Extensive tree damage was noted at this property and just to the east along the river, where multiple trees were uprooted and dozens of trees lost limbs and branches. The tornado weakened a bit east of the Iroquois River, but continued to cause tree damage as it approached and crossed N 1800 East Rd. A residence along N 1900 East Rd. and two additional barns along N 2000 East Rd. were then damaged by the tornado. The tornado lifted over a field southwest of St. Anne, shortly after it tipped over an irrigation pivot. |
5.) Northeast of Clifton Tornado
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Summary: This tornado likely began near or just west of N 1300 East Rd. northeast of Clifton, where some twigs and branches were downed across the road. Little to no damage was observed as the tornado tracked across open farm fields on either side of U.S. Highway 45/52. The tornado then impacted a farmstead along N 1500 East Rd. just north of E 3200 North Rd., peeling roof shingles off of the house at the property and damaging multiple farm outbuildings. A barn was blown off of its foundation, while a garage collapsed entirely after it was penetrated by the tornado's estimated 85 mph peak winds. The tornado likely lifted before reaching the Iroquois River as no damage was noted to the treeline along the river or anywhere east of there along the parent circulation's track. |
6.) Martinton Tornado
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Summary: Storm spotters and storm chasers captured footage of a funnel cloud near Martinton that lasted for several minutes just before 4:00 PM CST. Photos and videos shared with the NWS show that the funnel cloud was intermittently in contact with the ground as it tracked east-northeastward across open farm fields between N 1900 East Rd. and N 2400 East Rd. The last footage of the funnel cloud was captured at around 3:59 PM as it dissipated east of Martinton south of E 2800 North Rd. The tornado did not cause any known damage, and therefore, has been assigned the EF-U (EF-Unknown) rating. |
Fairbury - Forrest Straight-Line Winds
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Summary: NWS meteorologists also surveyed storm damage that occurred in southern Livingston County during the morning of the 28th. The damage survey confirmed that a concentrated area of straight-line wind damage in and west of Forrest was produced by a microburst with estimated peak winds of 80 mph. Damage consisted of downed power poles and trees, at least one shed blown off of its foundation, and a portion of Prairie Central Junior High School's gymnasium roof getting blown off. |
Storm Reports
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Preliminary Storm Report Map |
Preliminary Local Storm Report...Summary
National Weather Service Chicago IL
813 PM CST Tue Dec 30 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 AM Tstm Wnd Dmg Fairbury 40.75N 88.52W
12/28/2025 Livingston IL Emergency Mngr
Power poles downed. A farm outbuilding also
had its roof torn off and sustained siding
damage in the Fairbury area. Time estimated
from radar.
1034 AM Tstm Wnd Gst 1 NNW Forrest 40.76N 88.41W
12/28/2025 E80 MPH Livingston IL NWS Storm Survey
An NWS damage survey confirmed that a
concentrated area of straight-line winds
with estimated peak winds of 80 MPH occurred
in and west of Forrest, IL. These strong
winds downed power poles and trees, damaged
at least one shed, and blew off a portion of
the roof of a junior high school gymnasium.
1034 AM Tstm Wnd Dmg 2 W Forrest 40.75N 88.44W
12/28/2025 Livingston IL Emergency Mngr
Power poles downed 1-2 miles west of
Forrest. Time estimated from radar.
1034 AM Tstm Wnd Dmg 2 WNW Forrest 40.76N 88.45W
12/28/2025 Livingston IL Broadcast Media
Shed torn off of its foundation, swingset
twisted and demolished, and multiple power
poles downed on N 2500 East Road west of
Forrest. Time estimated from radar.
1037 AM Tstm Wnd Dmg 1 NNW Forrest 40.76N 88.41W
12/28/2025 Livingston IL Emergency Mngr
The roof of Prairie Central Junior High
Schools gymnasium was torn off in Forrest.
Power poles were also downed in the area.
Time estimated from radar.
1037 AM Tstm Wnd Dmg Forrest 40.75N 88.41W
12/28/2025 Livingston IL CO-OP Observer
Several large trees and power poles downed
across the north side of Forrest. Time
estimated from radar.
1220 PM Flood 2 S Portage 41.55N 87.18W
12/28/2025 Porter IN Law Enforcement
Part of Willowcreek Road on the south side
of Portage flooded with several inches of
standing water. Multiple vehicles got stuck
in the flood waters. A separate report of
flooding was also received from a trained
spotter of many roads in central and
southern Portage flooded with up to 6-12
inches of standing water and many ditches
and retention ponds filling and overflowing
in the area.
0253 PM Tornado 1 WNW Pontiac 40.89N 88.66W
12/28/2025 Livingston IL NWS Storm Survey
An NWS damage survey confirmed an EF-1
tornado with estimated peak winds of 90 MPH,
path length of 0.95 miles, and maximum width
of 125 yards impacted a portion of northwest
Pontiac, IL, resulting in damage to roofing
and siding to multiple houses, apartments,
and manufactured homes.
0254 PM Tstm Wnd Dmg Pontiac 40.89N 88.63W
12/28/2025 Livingston IL Public
A large tree limb was downed onto North Mill
Street in Pontiac. Time estimated from
radar.
0317 PM Tstm Wnd Dmg Cullom 40.88N 88.27W
12/28/2025 Livingston IL NWS Storm Survey
Multiple large tree branches and limbs
downed across the east side of Cullom. A
video shared via broadcast media also showed
a brief burst of strong winds blowing tree
debris around.
0331 PM Tornado 6 ESE Stelle 40.92N 88.05W
12/28/2025 Iroquois IL NWS Storm Survey
An NWS damage survey confirmed an EF-0
tornado with estimated peak winds of 80 MPH,
path length of 2.64 miles, and maximum width
of 100 yards impacted rural areas west of
Clifton, IL, resulting in damage to power
poles, farm outbuildings, and the roof of a
house.
0332 PM Tornado 2 S Gibson City 40.44N 88.38W
12/28/2025 Ford IL NWS Storm Survey
Based on eyewitness accounts and an
assessment of damage photos provided to the
NWS by the Ford County EMA and local
broadcast media, it has been confirmed that
a brief EF-0 tornado with estimated peak
winds of 85 MPH, path length of 0.85 miles,
and maximum width of 20 yards impacted the
GDM facility south of Gibson City, peeling a
portion of the metal roof off of a building
there. No additional damage appeared to be
caused by this tornado.
0340 PM Tornado 2 E Clifton 40.94N 87.90W
12/28/2025 Iroquois IL NWS Storm Survey
An NWS damage survey confirmed an EF-1
tornado with estimated peak winds of 95 MPH,
path length of 9.53 miles, and maximum width
of 150 yards impacted rural areas between
Clifton and St. Anne, IL, causing damage to
homes, barns, and several large trees, and
also knocking over an irrigation pivot.
0341 PM Tornado 2 SSE Chebanse 40.97N 87.89W
12/28/2025 Iroquois IL NWS Storm Survey
An NWS damage survey confirmed an EF-0
tornado with estimated peak winds of 85 MPH,
path length of 3.35 miles, and maximum width
of 75 yards impacted rural areas northeast
of Clifton, IL, resulting in damage to a
home and multiple farm outbuildings.
0353 PM Tornado 2 WSW Martinton 40.90N 87.77W
12/28/2025 Iroquois IL Trained Spotter
Video footage and photos taken by storm
spotters and storm chasers show that a
funnel cloud was intermittently in contact
with the ground as it tracked across open
farm fields south of Martinton, IL. The
tornado did not cause any known damage, and
thus, has been assigned the EF-U rating.
0406 PM Tstm Wnd Dmg 5 NE Donovan 40.93N 87.54W
12/28/2025 Iroquois IL Trained Spotter
Tree downed near the intersection of E 2880
North Rd. and N 3100 East Rd.
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Rainfall/Snowfall
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Map of Approximate Rainfall Totals |
CoCoRaHS Precipitation Summary National Weather Service Chicago IL 914 AM CST Mon Dec 29 2025 24-hour CoCoRaHS precipitation reports ending between 6 AM and 9 AM local time. These reports are considered supplemental and unofficial. .B LOT 1229 C DH07/PP/SF/SD/SW : : :Illinois CoCoRaHS Precipitation Reports : : Snow Snow Water : Pcpn Fall Depth Equiv : IL-WL-149 : Bult Field-Monee 4.9 SE : 2.35 / 0.5 / 0.5 / MM IL-WL-46 : Peotone 0.4 ENE : 2.29 / 1.1 / 1.0 / MM IL-WL-25 : Crete 2.6 E : 1.96 / 0.9 / 1.0 / MM IL-LV-28 : Dwight 2.3 SSE : 1.87 / MM / MM / MM IL-LS-01 : Ottawa 1.3 NW : 1.45 / 0.2 / 0.2 / 0.01 IL-WL-136 : Crete 3.3 ENE Franktuary : 1.44 / 0.5 / 0.5 / MM IL-CK-64 : Homewood 0.1 ESE : 1.42 / 1.0 / 1.0 / 0.04 IL-KD-34 : Plainfield 4.8 SW : 1.39 / 1.5 / 1.5 / MM IL-GY-01 : Carbon Hill 3.1 N : 1.35 / 0.3 / 0.5 / MM IL-CK-148 : Oak Lawn 1.9 SE : 1.35 / MM / MM / MM IL-DP-198 : Woodridge 0.3 SW : 1.33 / 0.2 / MM / MM IL-GY-16 : Morris 6.4 ESE : 1.31 / 0.5 / 0.5 / 0.04 IL-WL-51 : Plainfield 2.4 SSE : 1.28 / 1.7 / MM / MM IL-CK-455 : Hometown 0.3 S : 1.28 / 1.0 / 1.0 / MM IL-WL-165 : Frankfort 1.3 ESE : 1.27 / MM / MM / MM IL-WL-131 : Homer Glen 0.7 NNE : 1.26 / 1.8 / 1.8 / 0.07 IL-WL-171 : Plainfield 1.7 WNW : 1.26 / MM / MM / MM IL-CK-50 : Palos Park 1.3 SW : 1.25 / 1.8 / 1.8 / MM IL-WL-63 : New Lenox 1.8 SE : 1.24 / 2.0 / MM / MM IL-KD-126 : Oswego 1.1 ESE : 1.22 / 2.0 / 2.0 / 0.12 IL-LK-81 : Lake Villa 2.3 WSW : 1.22 / 0.1 / 0.1 / 0.01 IL-CK-390 : Alsip 0.9 E : 1.22 / MM / MM / MM IL-WL-73 : Wilmington 2.6 SE : 1.19 / MM / MM / MM IL-KD-127 : Oswego 1.7 WSW : 1.18 / MM / MM / MM IL-LK-42 : Gurnee 1.6 W : 1.17 / 0.1 / 0.1 / 0.01 IL-DK-28 : De Kalb 0.7 SW : 1.16 / 1.3 / 1.0 / MM IL-BN-19 : Belvidere 5.0 NNW : 1.15 / 1.0 / 1.0 / 0.06 IL-CK-74 : Oak Park 1.3 NNE : 1.15 / 1.0 / MM / MM IL-DP-16 : Aurora 3.6 SE : 1.15 / 1.0 / 1.0 / 0.08 IL-KN-115 : Aurora 3.5 ESE : 1.15 / 1.0 / MM / MM IL-DP-178 : Villa Park 0.8 ESE : 1.15 / 0.2 / 0.2 / 0.01 IL-IR-14 : Watseka 6.9 WNW : 1.14 / T / T / MM IL-MCH-103 : Harvard 4.4 NNE : 1.13 / 2.0 / 2.0 / 0.12 IL-MCH-107 : Crystal Lake 3.9 WNW : 1.11 / 1.5 / 1.5 / MM IL-MCH-43 : Algonquin 0.7 N : 1.11 / 1.0 / 1.0 / MM IL-MCH-83 : Crystal Lake 1.0 WSW : 1.11 / 1.0 / 1.0 / MM IL-GY-38 : Dwight 2.2 NNW : 1.11 / T / T / T IL-MCH-118 : Cary 0.9 W : 1.11 / MM / MM / MM IL-IR-29 : Donovan 5.8 SE : 1.10 / MM / MM / MM IL-KN-140 : Algonquin 1.3 SE : 1.10 / MM / MM / MM IL-BN-14 : Capron 0.1 N : 1.07 / 1.5 / 1.5 / 0.09 IL-MCH-95 : Cary 0.5 SSW : 1.07 / 0.8 / 0.8 / MM IL-CK-149 : Oak Lawn 0.5 SSW : 1.06 / 1.5 / 1.5 / 0.03 IL-GY-28 : Morris 1.5 SW : 1.06 / 0.3 / MM / MM IL-DP-38 : Elmhurst 0.4 SW : 1.02 / MM / MM / MM IL-LK-74 : Mundelein 1.6 WNW : 1.02 / MM / 1.0 / MM IL-MCH-87 : Marengo 0.7 NNE : 1.01 / 0.7 / MM / MM IL-CK-94 : Lincolnwood 1.8 E : 1.01 / 0.6 / 0.5 / MM IL-WL-147 : New Lenox 2.0 ESE : 0.99 / 1.2 / MM / MM IL-DP-109 : Elmhurst 0.8 ESE : 0.99 / 1.0 / 1.0 / 0.03 IL-KN-95 : Elgin 2.5 W : 0.99 / 0.5 / 0.5 / MM IL-CK-214 : Rogers Park 1.5 SW : 0.97 / 1.0 / 1.0 / MM IL-KN-134 : Maple Park 3.9 S : 0.96 / 0.3 / 0.3 / 0.03 IL-CK-12 : Bridgeview 1.3 NNW : 0.95 / 0.5 / 0.5 / MM IL-MCH-13 : Bull Valley 2.5 WNW : 0.95 / 0.5 / 0.5 / MM IL-MCH-33 : Woodstock 3.8 SW : 0.94 / 0.5 / MM / MM IL-GY-37 : Mazon 2.4 SE : 0.94 / MM / MM / MM IL-LE-22 : Amboy 0.5 SSW : 0.93 / MM / MM / MM IL-KD-157 : Yorkville 4.5 N : 0.92 / 0.5 / 0.5 / MM IL-KN-33 : North Aurora 1.5 NE : 0.91 / 0.5 / 0.5 / MM IL-KN-23 : Batavia 1.5 WNW : 0.90 / 1.5 / 1.5 / MM IL-LE-10 : Dixon 3.0 NNW : 0.89 / 1.2 / 1.2 / MM IL-KN-153 : South Elgin 3.1 WSW : 0.89 / 0.9 / 0.9 / MM IL-CK-285 : Harwood Heights 0.4 NNE : 0.88 / 3.7 / 3.5 / MM IL-LE-08 : Ashton 0.4 SSW : 0.88 / 0.3 / 0.3 / 0.05 IL-KN-121 : Geneva 1.3 NW : 0.87 / 1.0 / 1.0 / MM IL-DP-157 : West Chicago 3.5 NNE : 0.87 / MM / MM / MM IL-KN-04 : Sugar Grove 0.7 NE : 0.87 / MM / MM / MM IL-CK-278 : Hoffman Estates 1.6 SE : 0.86 / T / MM / MM IL-CK-131 : Schaumburg 2.0 E : 0.85 / 0.7 / 0.5 / 0.05 IL-CK-345 : Franklin Park 0.5 SSE : 0.85 / 0.5 / MM / MM IL-CK-346 : Palatine 1.2 NW : 0.85 / 0.5 / 0.5 / MM IL-GY-21 : Coal City 2.8 N : 0.85 / MM / MM / MM IL-KN-67 : St. Charles 6.0 NW : 0.84 / 1.1 / 1.0 / 0.06 IL-LK-16 : Buffalo Grove 1.5 N : 0.84 / 1.1 / 1.0 / MM IL-DP-177 : Winfield 0.8 ENE : 0.84 / 1.0 / MM / MM IL-KK-39 : Herscher 3.3 E : 0.84 / MM / MM / MM IL-WN-40 : Rockford 4.5 WSW : 0.82 / 0.5 / MM / MM IL-DK-29 : Earlville 4.8 NNE : 0.82 / MM / MM / MM IL-DP-150 : Bloomingdale 1.2 ESE : 0.82 / MM / MM / MM IL-LK-128 : Lake Forest 2.0 WSW : 0.82 / MM / MM / MM IL-DP-132 : Wheaton 2.0 NNE : 0.81 / 1.0 / 1.0 / MM IL-DK-05 : Cortland 0.3 SSW : 0.81 / 0.3 / 0.3 / 0.01 IL-DP-187 : Lombard 0.2 N : 0.81 / MM / MM / MM IL-LV-21 : Chatsworth 1.2 S : 0.81 / MM / MM / MM IL-KN-128 : Batavia 3.4 WSW : 0.80 / 0.7 / 1.0 / MM IL-CK-326 : Morton Grove 1.2 WNW : 0.80 / MM / MM / MM IL-GY-20 : Morris 2.5 SSE : 0.79 / MM / MM / MM IL-KK-45 : Kankakee 1.4 WSW : 0.78 / 1.0 / 1.0 / MM IL-WN-41 : South Beloit 1.5 ESE : 0.77 / MM / MM / MM IL-CK-460 : Wheeling 1.0 NW : 0.73 / 0.9 / 1.0 / MM IL-KN-123 : Aurora 2.8 WSW : 0.71 / 1.5 / MM / MM IL-CK-75 : Elk Grove Village 2.2 WSW : 0.70 / 0.5 / 0.5 / MM IL-CK-367 : Mount Prospect 0.2 NNE : 0.69 / 0.5 / 0.5 / MM IL-OG-16 : Rochelle 5.1 WNW : 0.68 / 0.5 / 0.5 / MM IL-KN-132 : Batavia 0.3 SE : 0.67 / 0.9 / MM / MM IL-LS-76 : Grand Ridge 0.2 SSW : 0.67 / 0.2 / MM / MM IL-LK-39 : Riverwoods 0.4 ENE : 0.63 / 0.5 / 0.5 / MM IL-CK-121 : Palatine 1.3 E : 0.58 / 0.5 / 0.5 / MM IL-CK-456 : Hoffman Estates 4.2 W : 0.55 / MM / 0.0 / 0.00 IL-WL-159 : New Lenox 2.1 S : 0.55 / MM / MM / MM IL-LK-136 : Highland Park 1.1 N : 0.50 / MM / MM / MM IL-KN-118 : Sleepy Hollow 0.7 W : 0.31 / 0.9 / 1.0 / 0.04 IL-IR-26 : Buckley 4.0 ENE : 0.21 / MM / MM / MM IL-FD-09 : Gibson City 3.0 WNW : 0.12 / MM / MM / MM IL-CK-152 : Chicago Ridge 0.2 WSW : MM / 2.2 / 2.2 / MM IL-LK-54 : Mundelein 0.5 NNE : MM / 0.2 / MM / MM : : :Indiana CoCoRaHS Precipitation Reports : : Snow Snow Water : Pcpn Fall Depth Equiv : IN-PT-80 : Portage 2.8 E : 3.98 / MM / MM / MM IN-LK-46 : St. John 0.2 WSW : 3.51 / 0.4 / 0.5 / MM IN-LK-67 : Schererville 1.1 E : 3.33 / MM / MM / MM IN-LK-127 : Merrillville 1.4 S : 2.95 / T / T / T IN-PT-69 : Porter 0.6 S : 2.74 / 0.8 / MM / MM IN-PT-157 : Portage 2.4 NNW : 2.35 / 0.1 / 0.1 / MM IN-PT-98 : Valparaiso 0.9 NNW : 1.56 / 0.2 / 0.0 / MM IN-PT-180 : Valparaiso 2.7 ENE : 1.44 / MM / MM / MM IN-PT-03 : Valparaiso 2.0 WSW : 1.40 / 0.2 / 0.2 / T IN-JS-07 : Rensselaer 1.9 SSW : 1.37 / T / MM / MM IN-LK-89 : Hammond 0.6 SSW : 1.26 / 0.2 / MM / MM IN-PT-117 : Valparaiso 5.5 SSW : 1.22 / T / MM / MM IN-LK-15 : Dyer 1.0 WNW : 1.20 / 1.3 / 1.5 / MM IN-NW-01 : Mount Ayr 1.6 NNE : 0.95 / 0.2 / 0.2 / MM IN-JS-37 : De Motte 0.8 NNW : 0.87 / 0.5 / 0.5 / MM IN-JS-31 : De Motte 5.9 S : 0.85 / T / MM / MM IN-JS-47 : Remington 0.3 N : 0.25 / T / T / MM IN-BT-11 : Earl Park 5.0 NW : 0.12 / MM / MM / MM .END $$ |
Non-Thunderstorm Winds
Public Information Statement National Weather Service Chicago IL 1011 AM CST Mon Dec 29 2025 ...Peak Wind Gusts Since the Afternoon of 12/28/25... Location Speed Time/Date Lat/Lon Michigan City Light 66 MPH 0220 AM 12/29 41.73N/86.91W Sugar Grove - Aurora Arpt. 60 MPH 1246 AM 12/29 41.77N/88.48W Harrison-Dever Crib 59 MPH 0300 AM 12/29 41.92N/87.57W Valparaiso Airport 56 MPH 0203 AM 12/29 41.45N/87.00W West Chicago - DuPage Arpt. 55 MPH 0140 AM 12/29 41.92N/88.25W Pontiac Airport 54 MPH 1255 AM 12/29 40.92N/88.62W Chicago OHare 53 MPH 0303 AM 12/29 41.98N/87.90W Peru Airport 53 MPH 0515 AM 12/29 41.35N/89.15W Montrose Beach Light 53 MPH 0316 AM 12/29 41.97N/87.63W Waukegan Airport 52 MPH 1200 AM 12/29 42.42N/87.87W Gary Airport 51 MPH 0550 AM 12/29 41.62N/87.42W Morris Airport 49 MPH 1055 PM 12/28 41.43N/88.42W Kankakee Airport 49 MPH 1255 AM 12/29 41.07N/87.85W Chicago Midway 49 MPH 0344 AM 12/29 41.78N/87.76W Lansing Airport 48 MPH 0235 AM 12/29 41.53N/87.53W Romeoville - Lewis Airport 47 MPH 0115 AM 12/29 41.60N/88.10W Wheeling-Chicago Exec. Arpt. 46 MPH 1206 AM 12/29 42.12N/87.90W Rockford Airport 45 MPH 0705 PM 12/28 42.20N/89.10W Observations are collected from a variety of sources with varying equipment and exposures. Not all data listed are considered official. $$ |
Photos
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| Prairie Central Junior High School in Forrest, IL. Photo courtesy of Bruce Sanders. | South of Gibson City, IL. Photo courtesy of the Ford County EMA. | Martinton, IL tornado. Photo taken by NWS Chicago meteorologist Brett Borchardt. |
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| Pontiac, IL. Photo from NWS damage survey. | Northeast of Clifton, IL. Photo from NWS damage survey. | Northeast of Clifton, IL. Photo from NWS damage survey. |
Meteorology/Radar
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| Effective deep-layer wind shear (change of wind speed and direction). Values over 50 knots were supportive of mid-level updraft rotation. | Low-level (0-3 km) instability. Values near 50 J/kg were sufficient for low-level updraft intensification. | Significant Tornado Parameter (STP). Values near 0.5 indicate an airmass supportive of storm rotation and brief tornadoes. |
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| NWS WPC surface analysis from 3 PM CST on 12/28/2025. This map shows a deepening low pressure system tracking northeastward across northern Illinois. The system's "warm sector" (the area south of its warm front and east of its cold front) was where conditions were favorable for severe weather and tornadoes. | NWS Lincoln/Central Illinois weather balloon sounding from 1900Z/1 PM CST. This sounding shows an unusually large amount of instability for the Midwest in the wintertime, unseasonably warm and moist air at ground level, and a substantial amount of wind shear, particularly in the lowest levels of the atmosphere. | KLOT radar imagery from 3:46 PM CST, showing (clockwise from the top left): reflectivity (Z), velocity (V), normalized rotation (NROT), and correlation coefficient (CC). The reductions in the CC product (blue/green colors) co-located with two distinct, tight rotational velocity couplets (circled in white) is indicative of two tornadoes ongoing simultaneously at this time in northern Iroquois County. |
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Media use of NWS Web News Stories is encouraged! Please acknowledge the NWS as the source of any news information accessed from this site. Additional event recaps can be found on the NWS Chicago Past Events Page |
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