A major snowstorm struck the central US on December 7-9, 2009. While most of Illinois missed the worst of the heavy snows and blizzard conditions, it did effect the northwest part of the state. Several locations reported more than ten inches from this event. They include Apple River State Park with 10.0 inches, Elizabeth with 11.2 inches, Galena with 10.5 inches, Mt. Carroll with 11.1 inches and Rockford with 11.8 inches (see table below).
While the worst of the snow fell on December 8 and 9, some of that snowfall was included in the reports for the next day. Therefore, the maps and table including data through December 10.
Below are maps of the snowfall from several sources as well as maps of the surface weather pattern on December 8 and 9, the temperature departure for December 10, and tables with the snowfall reports from individual stations.
State: Illinois Climate Division: 1 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110072 ALEDO 0.1 25 110146 AMBOY 6.6 75 110211 APPLE_RIVER_CANYON_ST_PK 10.0 75 112348 DIXON_1_NW 0.0 25 112745 ELIZABETH 11.2 100 113262 FREEPORT_WASTE_WTR_PL 9.5 100 113312 GALENA 10.5 100 114710 KEWANEE_1_E 5.5 100 115901 MOUNT_CARROLL 11.1 100 116490 OREGON_3_SW 9.9 100 116661 PAW_PAW_2_NW 7.0 100 117354 ROCHELLE 5.3 100 117382 ROCKFORD_AIRPORT 11.8 100 117470 ROSCOE_2_SE 9.8 100 118254 STEWARD_3S 6.0 100 119469 WOODHULL 4.0 50 State: Illinois Climate Division: 2 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110442 BARRINGTON_3SW 6.4 100 110583 BELVIDERE 9.2 100 111420 CHANNAHON_DRESDEN_ISLAND 2.5 100 111497 CHICAGO_BOTANICAL_GARDEN 3.6 100 111549 CHICAGO_OHARE_AP 6.4 100 111577 CHICAGO_MIDWAY_AP_3SW 4.4 100 112048 CRYSTAL_LAKE_4_NW 6.4 25 112223 DE_KALB 6.3 100 112510 EARLVILLE_3_S 4.2 100 112709 ELBURN 9.0 100 112736 ELGIN 4.7 100 113392 GENOA_2_SW 12.1 100 113490 GLEN_ELLYN_4_S 3.8 75 113902 HARVARD 9.0 50 114530 JOLIET_BRANDON_RD_DAM 0.8 100 114816 LA_GRANGE 6.5 100 114890 LANSING 0.0 75 115313 MANHATTAN_4_SW 2.3 75 115326 MARENGO 5.5 25 115372 MARSEILLES_LOCK 2.0 100 115493 MCHENRY_WG_STRATTON_L&D 6.0 100 115562 MENDOTA__2_SE 6.5 100 115763 MONEE_RESERVOIR 0.0 75 115825 MORRIS_1_NW 2.9 100 115961 MUNDELEIN_4_WSW 6.1 100 116065 NEWARK_2_SSE 1.8 100 116281 OAK_BROOK_2W 7.1 100 116526 OTTAWA_5SW 2.0 75 116616 PARK_FOREST 1.7 100 116753 PERU 2.7 75 116849 PLAINFIELD_3_NE 3.8 100 116855 PLANO 4.1 100 117457 ROMEOVILLE_WFO 3.7 100 117579 ST_CHARLES_2NW_RIVER 8.4 75 117586 ST_CHARLES_7_NW 8.2 100 117833 SHABBONA_3S 6.4 100 118192 SPRING_GROVE 8.0 100 118324 STREAMWOOD 5.9 100 119221 WHEATON_3_SE 3.5 100 119480 WOODSTOCK_5_NW 11.4 100 119827 YORKVILLE_3_SW 5.0 100 State: Illinois Climate Division: 3 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110140 ALTONA 7.9 100 110330 AUGUSTA 1.0 25 110356 AVON_5_NE 1.8 75 110598 BENTLEY 2.3 100 112125 DAHINDA_1_NE 2.6 75 113320 GALESBURG 4.3 75 114780 KNOXVILLE 2.4 100 114823 LA_HARPE 3.5 75 115038 LEWISTOWN 1.8 75 115334 MARIETTA 1.4 100 115772 MONMOUTH_4NW 6.0 100 115935 MOUNT_STERLING 1.2 50 116670 PAYSON 1.0 50 116970 PRAIRIE_CITY_2S 2.2 100 117551 RUSHVILLE 1.0 100 118204 ST_DAVID 1.6 100 State: Illinois Climate Division: 4 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110305 ATHENS_2_N 0.1 75 110306 ATHENS_2SW 0.9 100 110761 BLOOMINGTON_WATERWORKS 0.2 100 110764 BLOOMINGTON_5W 1.5 100 110868 BRADFORD_3SSE 4.2 100 111083 BUFFALO 0.5 75 111236 CAMP_GROVE_2_SW 2.7 75 111475 CHENOA 1.1 100 111627 CHILLICOTHE 2.0 100 111743 CLINTON_1_SSW 0.5 25 111836 CONGERVILLE_2_NW 0.8 75 112854 EUREKA 3.0 75 112993 FARMER_CITY 0.0 75 113940 HAVANA_4_NNE 0.0 75 115079 LINCOLN 0.0 25 115272 MACKINAW_1N 1.6 100 115413 MASON_CITY 0.9 75 115712 MINONK 2.0 75 115876 MORTON 1.9 100 115927 MOUNT_PULASKI 1.0 75 116200 NORMAL_4NE 0.5 100 116703 PEORIA_AIRPORT_3SW 1.4 100 116765 PETERSBURG_2SW 0.4 25 117004 PRINCEVILLE_2W 1.9 100 117329 ROANOKE 2.2 100 117590 SAYBROOK_2N 0.3 100 118222 STANFORD_2S 1.0 100 State: Illinois Climate Division: 5 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110803 BOURBONNAIS_3NW 1.8 100 111447 CHATSWORTH 0.0 100 111655 CISCO 0.0 75 112140 DANVILLE 0.0 25 112145 DANVILLE_SEWAGE_PLANT 0.0 100 112500 DWIGHT 2.0 75 112923 FAIRBURY__WWTP 0.6 75 113774 HAMMOND 0.0 50 114198 HOOPESTON_1_NE 0.0 100 114603 KANKAKEE_METRO_WASTWTR 0.9 25 115646 MILFORD_5_NW 0.5 100 116344 OGDEN 0.3 100 116663 PAXTON_2_WSW 0.0 25 116769 PHILO 0.0 50 116910 PONTIAC 1.7 100 117150 RANTOUL 0.0 50 117952 SIDELL_5NW 0.3 100 118194 ST_ANNE 0.7 75 118353 STREATOR_3_SE 1.7 100 118632 TOULON_2_SSE 4.9 100 118740 URBANA 0.0 100 118745 URBANA_S_AGRONOMY_FARM 0.1 100 119021 WATSEKA_2_NW 0.0 50 State: Illinois Climate Division: 6 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110137 ALTON_MELVIN_PRICE_L&D 0.0 100 110492 BEARDSTOWN 1.2 100 111280 CARLINVILLE 0.0 100 112679 EDWARDSVILLE_2_W 0.1 50 113666 GREENFIELD 0.5 75 113693 GREENVILLE_2_NE 0.0 25 113717 GRIGGSVILLE 0.0 50 114089 HIGHLAND 0.0 50 114442 JACKSONVILLE_2E 1.0 100 114447 JACKSONVILLE_2 1.0 100 114489 JERSEYVILLE_2_SW 0.0 100 114739 KINCAID 0.1 50 115113 LOAMI_3_SSW 1.0 50 115539 MEDORA 0.2 50 115841 MORRISONVILLE 0.0 50 116738 PERRY_6_NW 1.7 100 117318 RIVERTON_4NNE 0.7 25 117896 SHERMAN_1ESE 0.8 100 118186 SPRINGFIELD_#2 1.0 100 118870 VIRGINIA 0.5 100 119241 WHITE_HALL_1_E 0.6 75 119331 WINCHESTER 0.4 50 State: Illinois Climate Division: 7 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110500 BEECHER_CITY 1.5 75 111329 CASEY 0.9 75 111436 CHARLESTON 0.4 100 111691 CLAREMONT_6N 0.8 100 111700 CLAY_CITY_6_SSE 0.5 50 112685 EFFINGHAM_SE 1.0 50 112687 EFFINGHAM 1.0 100 113106 FLORA 0.0 25 114078 HIDALGO_3SW 0.6 75 114317 HUTSONVILLE_POWER_PLANT 0.8 25 114400 IUKA_12_SW 0.9 50 114957 LAWRENCEVILLE 1.7 50 115219 LOVINGTON 0.1 50 115430 MATTOON 1.2 100 115950 MOWEAQUA_2S 0.1 25 116025 NEOGA_4NW 0.2 50 116134 NEWMAN_3W 0.0 100 116446 OLNEY_2S 1.0 100 116558 PALESTINE__2W 1.0 50 116579 PANA_3_E 0.0 50 116610 PARIS_WATERWORKS 0.4 50 116642 PATOKA 0.8 25 117126 RAMSEY 0.3 100 117345 ROBINSON 0.8 75 117636 SALEM 0.5 75 118389 SULLIVAN_3_S 0.0 100 118684 TUSCOLA 0.0 100 118781 VANDALIA 0.3 25 State: Illinois Climate Division: 8 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110050 ALBERS_1_W 0.0 75 110510 BELLEVILLE_SIU_RESEARCH 0.0 25 111166 CAIRO_3_N 0.0 100 111265 CARBONDALE_SEWAGE_PLANT 0.0 25 111290 CARLYLE_RESERVOIR 0.0 25 111386 CENTRALIA 0.9 50 111491 CHESTER 0.0 25 112483 DU_QUOIN_4_SE 0.0 25 113580 GRAND_CHAIN_DAM_53 0.0 100 114629 KASKASKIA_RIV_NAV_LOCK 0.0 25 115983 MURPHYSBORO_2_SW 0.0 75 116011 NASHVILLE_4_NE 0.0 100 116072 NEW_ATHENS 0.0 100 116973 PRAIRIE_DUROCHER 0.0 25 117157 RED_BUD_5_SE 0.0 50 119002 WATERLOO 0.0 50 State: Illinois Climate Division: 9 From 12/07/2009 To 12/10/2009 Station Percent ID Avail Number Name Snow(in.) Data ----------------------------------------------------- 110993 BROOKPORT_DAM_52 0.0 100 112931 FAIRFIELD_RADIO_WFIW 0.5 25 113612 GRAYVILLE 1.0 100 115943 MT_VERNON_3_NE 0.0 25 118020 SMITHLAND_LOCK_&_DAM 0.0 25