Overview
Fast Facts
Event Snow Totals
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1122 AM CST MON DEC 12 2016
...2-DAY SNOWFALL ROUND-UP...
THE FOLLOWING ARE SNOW AMOUNTS FOR THE PREVIOUS 2 DAYS
AS MEASURED IN THE MORNING BY NWS COOPERATIVE OBSERVERS
AND COCORAHS OBSERVERS. OBSERVATIONS ARE USUALLY
TAKEN AT 7 AM.
2-DAY SNOW TOTALS FOR MONDAY (12/12/16)
AS OF 11:22 AM CST
ILLINOIS 2-DAY SNOW FALL
LOCATION (COUNTY): AMT(IN) REPORTS
HARVARD 3SSE (MCHENRY).......................11.7 (2)
BULL VALLEY 2WNW (MCHENRY)...................10.8 (2)
HARVARD (MCHENRY).............................9.5 (2)
RIVERWOODS (LAKE).............................9.3 (2)
LAKE ZURICH (LAKE)............................9.1 (2)
HIGHWOOD 1S (LAKE)............................9.0 (2)
GENOA (DE KALB)...............................8.8 (2)
WOODSTOCK 5NW (MCHENRY).......................8.7 (2)
WOODSTOCK 4SW (MCHENRY).......................8.5 (2)
WONDER LAKE 1WNW (MCHENRY)....................8.1 (2)
SCHAUMBURG 2E (COOK)..........................8.1 (2)
DOWNERS GROVE 0.4NNE (DU PAGE)...............11.7 (3)
ST. CHARLES (KANE)............................8.0 (2)
WAUKEGAN 2N (LAKE)............................7.9 (2)
ELK GROVE VILLAGE 1ESE (COOK).................7.9 (2)
OHARE (COOK)..................................7.8 (2)
LAKE VILLA 1SSW (LAKE)........................7.8 (2)
BEACH PARK 1W (LAKE)..........................7.8 (2)
ELGIN 2W (KANE)...............................7.8 (2)
HOFFMAN ESTATES 5W (COOK).....................7.8 (2)
ROSCOE 2SE (WINNEBAGO)........................7.7 (2)
ROSCOE 2ESE (WINNEBAGO).......................7.7 (2)
LAKE VILLA 2WSW (LAKE)........................7.7 (2)
BARRINGTON (LAKE).............................7.7 (2)
FOX LAKE 2SE (LAKE)...........................7.7 (2)
ELK GROVE VILLAGE 2WSW (COOK).................7.7 (2)
PARK FOREST (COOK)............................7.5 (2)
BUFFALO GROVE 2N (LAKE).......................7.5 (2)
LINCOLNSHIRE 1N (LAKE)........................7.5 (2)
GENEVA 4WSW (KANE)............................7.5 (2)
BOTANIC GARDENS (COOK)........................7.5 (2)
WILLOW SPRINGS (COOK).........................7.4 (2)
MUNDELEIN 2WNW (LAKE).........................7.4 (2)
GENEVA 1SSW (KANE)............................7.3 (2)
MUNDELEIN (LAKE)..............................7.2 (2)
MIDWAY COOP (COOK)............................7.0 (2)
ROCKFORD 1NW (WINNEBAGO)......................7.0 (2)
BATAVIA 1WSW (KANE)...........................7.0 (2)
ROSELLE 1ESE (DU PAGE)........................7.0 (2)
PARK RIDGE 1WNW (COOK)........................7.0 (2)
BATAVIA 2WNW (KANE)...........................6.9 (2)
MCHENRY (MCHENRY).............................6.7 (2)
PALATINE 1E (COOK)............................6.7 (2)
ELMHURST 1ESE (DU PAGE).......................6.7 (2)
ROCKFORD 2ENE (WINNEBAGO).....................6.5 (2)
NAPERVILLE 1NW (DU PAGE)......................6.5 (2)
OAK PARK 2S (COOK)............................6.5 (2)
PARK RIDGE (COOK).............................6.4 (2)
ROCKFORD (WINNEBAGO)..........................6.3 (2)
LISLE 1SE (DU PAGE)...........................6.3 (2)
LINCOLNWOOD 2E (COOK).........................6.2 (2)
MONEE (WILL)..................................6.1 (2)
CRETE 3E (WILL)...............................6.1 (2)
BATAVIA (KANE)................................6.1 (2)
BYRON 3N (OGLE)...............................6.0 (2)
NORTH AURORA 2NE (KANE).......................6.0 (2)
ELBURN (KANE).................................6.0 (2)
OAK LAWN 2WNW (COOK)..........................6.0 (2)
ELBURN (KANE).................................6.0 (2)
AMBOY (LEE)...................................6.0 (2)
SUGAR GROVE 1NE (KANE)........................5.9 (2)
LISLE (DU PAGE)...............................5.9 (2)
PEOTONE (WILL)................................5.8 (2)
LA GRANGE PARK 1SSW (COOK)....................5.8 (2)
ROMEOVILLE (WILL).............................5.6 (2)
DE KALB (DE KALB).............................5.6 (2)
ROGERS PARK 2SW (COOK)........................5.6 (2)
NEW LENOX 2SE (WILL)..........................5.5 (2)
ST. CHARLES 6NW (KANE)........................5.5 (2)
ELGIN 1S (KANE)...............................5.5 (2)
NAPERVILLE 2SE (DU PAGE)......................5.5 (2)
SOMONAUK 2NE (DE KALB)........................5.5 (2)
LINCOLNWOOD 3E (COOK).........................5.5 (2)
CHICAGO RIDGE (COOK)..........................5.5 (2)
CHICAGO 6ESE (COOK)...........................5.5 (2)
ELGIN (KANE)..................................5.5 (2)
CAPRON (BOONE)................................5.4 (2)
BURR RIDGE 2SW (DU PAGE)......................5.3 (2)
LANSING (COOK)................................5.2 (2)
PARK FOREST 1SW (COOK)........................5.2 (2)
HOMER GLEN 1ENE (WILL)........................5.1 (2)
BOLINGBROOK 3NE (DU PAGE).....................5.1 (2)
JOLIET LOCK/DAM (WILL)........................5.0 (2)
DE KALB (DE KALB).............................5.0 (2)
MANHATTAN (WILL)..............................4.9 (2)
MANHATTAN 5ENE (WILL).........................4.9 (2)
PLAINFIELD 5SW (KENDALL)......................4.9 (2)
CORTLAND (DE KALB)............................4.9 (2)
PALOS PARK 1SW (COOK).........................4.9 (2)
WORTH (COOK)..................................4.9 (2)
YORKVILLE 2SE (KENDALL).......................4.8 (2)
OAK LAWN (COOK)...............................4.7 (2)
NAPERVILLE 4SSW (WILL)........................4.7 (2)
LISLE MORTON ARB (DU PAGE)....................4.6 (2)
NEW LENOX 3E (WILL)...........................4.5 (2)
LOCKPORT 1SE (WILL)...........................4.5 (2)
GURNEE 2W (LAKE)..............................4.5 (1)
LAKE FOREST 2NNE (LAKE).......................4.5 (1)
PLAINFIELD (WILL).............................4.4 (2)
MOKENA 1W (WILL)..............................4.4 (2)
HOMEWOOD (COOK)...............................4.4 (2)
WILMINGTON 3SE (WILL).........................4.3 (2)
JOLIET 2N (WILL)..............................4.2 (2)
NEW LENOX 4SE (WILL)..........................4.2 (2)
MONTGOMERY 1SSE (KENDALL).....................4.0 (2)
EARLVILLE 3S (LA SALLE).......................4.0 (2)
DIXON (LEE)...................................4.0 (2)
STEWARD (LEE).................................3.9 (2)
ASHTON (LEE)..................................3.9 (2)
MANHATTAN 2SE (WILL)..........................3.8 (2)
OTTAWA 2N (LA SALLE)..........................3.8 (2)
PLAINFIELD 2SSE (WILL)........................3.6 (2)
OTTAWA 1NW (LA SALLE).........................3.5 (2)
DIXON 2SW (LEE)...............................3.5 (2)
MOMENCE (KANKAKEE)............................3.2 (2)
LA SALLE (LA SALLE)...........................3.2 (2)
CARBON HILL 3.1N (GRUNDY).....................3.2 (2)
COAL CITY 4NNW (GRUNDY).......................3.2 (2)
ST ANNE (KANKAKEE)............................3.0 (2)
MAZON 0.5ENE (GRUNDY).........................3.0 (2)
BOURBONNAIS (KANKAKEE)........................3.0 (2)
MORRIS 6ESE (GRUNDY)..........................2.9 (2)
OTTAWA (LA SALLE).............................2.7 (2)
MINOOKA (GRUNDY)..............................2.6 (2)
PAW PAW (LEE).................................2.5 (2)
MORRIS (GRUNDY)...............................2.5 (2)
BONFIELD 4WSW (KANKAKEE)......................2.5 (2)
ASHKUM 5.6E (IROQUOIS)........................2.4 (2)
STREATOR 4ENE (LA SALLE)......................2.0 (2)
WATSEKA 6.9WNW (IROQUOIS).....................2.0 (2)
MARSEILLES (LA SALLE).........................1.9 (2)
CHATSWORTH (LIVINGSTON).......................1.0 (2)
DWIGHT (LIVINGSTON)...........................1.0 (2)
CHATSWORTH (LIVINGSTON).......................1.0 (2)
INDIANA 2-DAY SNOW FALL
LOCATION (COUNTY): AMT(IN) REPORTS
CHESTERTON 4E (PORTER)........................7.5 (2)
CROWN POINT (LAKE)............................7.2 (2)
(KB9F)VALPARAISO 4S (PORTER)..................7.0 (2)
(W9MAL)MERRILLVILLE 2NNW (LAKE)...............7.0 (2)
VALPARAISO 6WSW (PORTER)......................6.6 (2)
LAKES OF THE FOUR SEASONS 2NNE (PORTER).......6.6 (2)
CROWN POINT 1N (LAKE).........................6.6 (2)
DE MOTTE 1NNW (JASPER)........................6.5 (2)
PORTAGE 3E (PORTER)...........................6.0 (2)
HEBRON 4NE (PORTER)...........................6.0 (2)
PORTER 1S (PORTER)............................5.9 (2)
VALPARAISO 6SSW (PORTER)......................5.5 (2)
DE MOTTE 4SW (JASPER).........................5.5 (2)
VALPARAISO 1SE (PORTER).......................5.3 (2)
REMINGTON (JASPER)............................5.2 (2)
VALPARAISO 4SW (PORTER).......................5.0 (2)
DE MOTTE 6S (JASPER)..........................4.5 (2)
DYER 1WNW (LAKE)..............................4.0 (2)
REMINGTON (JASPER)............................4.0 (2)
RENSSELAER (JASPER)...........................3.1 (2)
MOROCCO (NEWTON)..............................3.0 (2)
CROWN POINT 2WSW (LAKE).......................3.0 (2)
MOUNT AYR 2NNE (NEWTON).......................2.6 (2)
$$
Storm Reports
247
NWUS53 KLOT 052015
LSRLOT
Preliminary Local Storm Report...Summary
National Weather Service Chicago IL
315 PM CDT Sun Apr 5 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0611 PM Tornado 4 NNW Nelson 41.85N 89.62W
04/02/2026 Lee IL NWS Storm Survey
An NWS damage survey confirmed that an EF-1
tornado with estimated peak winds of 100 mph
tracked for 5.75 miles through northwestern
Lee County. The tornado damaged or destroyed
multiple farm outbuildings, downed several
trees and power poles, and caused minor
damage to a few residences.
0623 PM Tstm Wnd Dmg 1 NNW Grand Detour 41.91N 89.42W
04/02/2026 Ogle IL Fire Dept/Rescue
Reports of trees down and damage to
outbuildings near W. Edgewood Rd and S.
Ridge Rd in Ogle County. Time estimated.
0624 PM Tornado 3 N Grand Detour 41.94N 89.41W
04/02/2026 Ogle IL NWS Storm Survey
An NWS damage survey confirmed that a brief
EF-1 tornado with estimated peak winds of
105 mph impacted a few properties along
Ridge Road in southern Ogle County. One
house had two-thirds of its roof removed by
the tornado, and several trees were damaged
by the tornado as well.
0625 PM Tstm Wnd Gst Dixon 41.84N 89.48W
04/02/2026 E65 MPH Lee IL Emergency Mngr
Estimated 60-70 mph gusts.
0630 PM Tstm Wnd Gst Oregon 42.01N 89.33W
04/02/2026 E60 MPH Ogle IL Trained Spotter
Small 2-inch limbs coming down.
0637 PM Hail Dixon 41.84N 89.48W
04/02/2026 E1.00 Inch Lee IL Trained Spotter
Nickel to quarter sized hail.
0644 PM Tornado 3 SSW Davis Junction 42.06N 89.12W
04/02/2026 Ogle IL NWS Storm Survey
An NWS damage survey confirmed that an EF-0
tornado with estimated peak winds of 85 mph
and a path length of 2.71 miles tracked
through the community of Holcomb in
northeastern Ogle County. The tornado caused
extensive tree damage in Holcomb, damaged a
few farm outbuildings, and caused a grain
leg to collapse onto railroad tracks.
0650 PM Tstm Wnd Dmg 1 WNW Monroe Center 42.10N 89.02W
04/02/2026 Ogle IL NWS Employee
Roof or other structural material on road.
Also downed tree at farm just east of I-39.
Reported by retired NWS employee. Time
estimated from radar.
0704 PM Hail 2 W Lindenwood 42.05N 89.07W
04/02/2026 M1.00 Inch Ogle IL Trained Spotter
Quarter sized hail ongoing at E Lindenwood
Rd and IL-251. Has been nearly continuous
for several minutes.
0718 PM Tstm Wnd Gst 2 NW Peru 41.35N 89.15W
04/02/2026 M55 MPH La Salle IL AWOS
Measured at VYS.
0722 PM Hail 2 NW Utica 41.37N 89.03W
04/02/2026 E1.00 Inch La Salle IL Public
Report from mPING: Quarter (1.00 in.).
0729 PM Tstm Wnd Dmg Woodstock 42.31N 88.45W
04/02/2026 McHenry IL Broadcast Media
Tree downed onto a house on the 600 block of
South Jefferson Street in Woodstock. Time
estimated from radar.
0731 PM Tstm Wnd Dmg 4 W Greenwood 42.39N 88.47W
04/02/2026 McHenry IL Public
Siding damage, partial loss of a tree, and
various outdoor objects blown around. Time
estimated from radar.
0735 PM Tstm Wnd Dmg Ottawa 41.35N 88.84W
04/02/2026 La Salle IL Public
Photo shared on social media of a tree down
across Columbus Street just north of East
Jackson Street. Time estimated from radar.
0735 PM Tstm Wnd Dmg 2 S Wonder Lake 42.36N 88.35W
04/02/2026 McHenry IL Broadcast Media
Updates previous tstm wnd dmg report from 2
SSW Wonder Lake. Reports of a large tree
down across IL 120 and blocking the road
between Wonder Lake Drive and Thompson Road.
Seven power poles downed in the same area.
Time estimated based on radar.
0738 PM Tstm Wnd Dmg 1 SW Ringwood 42.38N 88.32W
04/02/2026 McHenry IL Public
Tree downed along McCullom Lake Road. Time
estimated from radar.
0742 PM Tstm Wnd Dmg 2 W Pistakee Highlands 42.41N 88.25W
04/02/2026 McHenry IL Trained Spotter
Tree uprooted and metal street sign blown
over. Time estimated from radar.
0742 PM Tstm Wnd Gst 3 ENE Norway 41.48N 88.61W
04/02/2026 M65 MPH La Salle IL Public
Measured at an Ambient Personal Weather
station.
0753 PM Tstm Wnd Dmg 1 NNE Antioch 42.49N 88.09W
04/02/2026 Lake IL Public
Multiple public reports of trees downed on
the north side of Antioch. Time estimated
from radar.
0810 PM Tstm Wnd Gst Marengo 42.25N 88.61W
04/02/2026 E55 MPH McHenry IL Trained Spotter
Reports of 50-60 mph wind gusts in the
Marengo area.
0811 PM Tstm Wnd Dmg 1 WSW Lombard 41.87N 88.03W
04/02/2026 DuPage IL Public
Multiple public reports of downed trees and
tree branches at and near Sunset Knoll Park
in Lombard. Time estimated from radar.
0811 PM Tstm Wnd Dmg Winfield 41.87N 88.16W
04/02/2026 DuPage IL Trained Spotter
Eight-inch tree branch down.
0827 PM Tstm Wnd Dmg Garfield Park - Chicago 41.88N 87.72W
04/02/2026 Cook IL NWS Storm Survey
Multiple large tree branches downed in and
near Garfield Park. Small tree also
uprooted.
0831 PM Tstm Wnd Gst Midway Airport 41.78N 87.75W
04/02/2026 M69 MPH Cook IL ASOS
Measured at the Midway ASOS.
0832 PM Tstm Wnd Gst 2 SSE Logan Square - Ch 41.90N 87.68W
04/02/2026 M64 MPH Cook IL Public
Measured at PWS KILCHICA780.
0836 PM Tstm Wnd Gst 3.0 SW Midway Airport 41.74N 87.78W
04/02/2026 M70 MPH Cook IL CO-OP Observer
0837 PM Tstm Wnd Dmg 1 SW Douglas - Chicago 41.82N 87.63W
04/02/2026 Cook IL NWS Storm Survey
Multiple large tree branches and limbs
downed in and near the Douglas community
area of Chicago.
0840 PM Marine Tstm Wind 3 NE Navy Pier 41.92N 87.57W
04/02/2026 M59 MPH LMZ741 IL C-Man Station
Measured at the Harrison Dever Crib.
0908 PM Marine Tstm Wind 3 NE Navy Pier 41.92N 87.57W
04/02/2026 M72 MPH LMZ741 IL C-Man Station
Peak wind gust at Harrison-Dever Crib.
1020 PM Tstm Wnd Gst NWS Chicago-Romeoville 41.60N 88.08W
04/02/2026 E60 MPH Will IL NWS Employee
Estimated 60+ mph winds at NWS office.
1032 PM Tstm Wnd Gst Indian Head Park 41.77N 87.90W
04/02/2026 M60 MPH Cook IL Public
1046 PM Tstm Wnd Dmg 4 NNW Manhattan 41.47N 88.02W
04/02/2026 Will IL Emergency Mngr
Downed power poles. Time estimated by radar.
1140 PM Marine Tstm Wind 3 NE Beverly Shores 41.72N 86.94W
04/02/2026 M39 MPH LMZ745 IN C-Man Station
Measured at MCYI3. A stronger surge of winds
occurred about 30 minutes after this
observation.
&&
$$
Meteorology
The second snow event of the season, this one also during the weekend, was a longer duration event that was truly made up of two meteorological systems. The first was a minor upper disturbance that produced lift and saturation in an inherent cold atmosphere, favorable for larger dendritic snowflake growth. The second system was about 12 hours later, with occasional flurries/light snow in-between. This second upper level disturbance was a stronger one and steered high moisture northward over the area. The snow caused by this event was a more wet snow, with snowflakes sticking together as they fell. Both "bursts" of snow activity had rates near or over one inch per hour at times north of I-80.
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| December 10, 2016: Radar loop from noon to midnight | December 11, 2016: Radar loop from midnight to noon | December 11, 2016: Radar loop from noon to midnight |
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| December 11, 2016: NWS Chicago Doppler Radar Reflectivity loop from 9 a.m. through 10 p.m. The yellow areas indicate over 30 dBZ echoes of snow that are indicative of a high number of snowflakes or large snowflakes, or both. These echoes were often in stripes correlating with snow bands. The forcing for this was a developing frontogenetic circulation in response to the deepening of the weather system and tightening of the temperature gradient aloft. |
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| December 11, 2016: NWS Chicago Doppler Radar Reflectivity image from 4:45 pm Heavy snow bands across Lake and McHenry Counties southwest through DuPage, Kane, DeKalb, and LaSalle Counties. |
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| December 11, 2016: RAP Analysis of 500 mb at 6 p.m. The colors indicate the mid-level winds and the black lines heights. The short wave trough moving across the Upper Midwest and the associated jet promoted widespread lift and deformation across northern Illinois, which favored the development of the frontogenetic circulation and snow bands. | December 11, 2016: RAP Analysis of Precipitable Water (PWAT) at 3 p.m. Moisture values in excess of 0.6 inches are high for all snow events. Similar to the prior Sunday, the snow became more wet and coupled with the light winds at the surface, it stuck to many objects such as trees. The 6 pm NWS Lincoln, IL weather balloon confirmed these values with 0.71" PWAT observed. |
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| December 10, 2016 6 p.m.: RAP model analysis in far northern Illinois | December 11, 2016 9 a.m.: RAP model analysis in far northern Illinois | December 11, 2016 6 p.m.: RAP model analysis in far northern Illinois |
Additional
Photos
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| Photo courtesy of Christian Lyon, Lakeview area of Chicago, IL | Photo courtesy of Christine McEvilly in the southwest Suburbs |
Links
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