Illinois State Water Survey
Institute of Natural Resource Sustainability
University of Illinois at Urbana-Champaign
Institute of Natural Resource Sustainability
University of Illinois at Urbana-Champaign
Illinois State Climatologist Office
Jim Angel, state climatologist
Heavy Rainfall in northern Illinois in August 2007
Jim Angel, state climatologistNorthern Illinois has been plagued by heavy rainfall in August 2007. Here is information on the events, including maps and data. A Illinois State Water Survey press release was issued here.
A portion of that release says, "Rainfall amounts in northeastern Illinois already have established this as the wettest August and wettest summer since regional records began in 1895. As of the morning of August 24, rainfall for northeastern Illinois (including those counties from Boone to LaSalle and eastward) averaged 11.32 inches, 8.10 inches above normal, and beating the 1987 record of 11.02 inches. Totals for June–August thus far in this area averaged 20.02 inches, 8.91 inches above normal, and beating the 1972 record of 19.26 inches" more...
Since that press release, rainfall totals have decreased slightly (see table below):
Illinois
8/ 1/2007 to 8/31/2007
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 74.1 71.5 2.6 7.17 4.40 2.77 163
Northeast 73.4 71.6 1.8 10.99 4.15 6.84 265
West 78.1 73.9 4.2 4.57 3.58 0.99 128
Central 76.8 73.0 3.7 4.16 3.60 0.55 115
East 75.8 72.4 3.4 4.73 3.77 0.96 125
West-southwest 80.1 74.6 5.4 1.66 3.23 -1.57 51
East-southeast 80.0 74.6 5.4 2.05 3.39 -1.34 60
Southwest 81.9 75.9 5.9 1.33 3.34 -2.01 40
Southeast 82.1 76.0 6.1 1.26 3.27 -2.01 38
State 77.9 73.6 4.2 4.31 3.65 0.66 118
Dev means Deviation From Normal, Percent means Percent of Normal
Maps
The first two maps are provided by the Midwestern Regional Climate Center while the third is provided by the National Weather Service.
Station Data
NWS cooperative weather observer reports from 8/01/2007 To 8/31/2007.
"Obs" means the observed precipitation, "Dev" means the deviation from
the climate division normal for this period, and "Percen Avail Data"
means the percent available data. An "na" means no data were available.
State: Illinois Climate Division: 1
From 8/01/2007 To 8/31/2007
Station Percent Percent
ID Precipitation Avail <--- Temperature ----> Avail
Number Name Obs Dev Data High Low Mean Dev Data
-------------------------------------------------------------------------------
110072 ALEDO 7.96 3.85 100 84.6 67.0 75.8 2.8 81
110146 AMBOY 7.92 3.70 100 na na na na 00
110211 APPLE_RIVER_CANYON_ST_PK 9.30 4.85 100 na na na na 00
112348 DIXON_1_NW 7.35 3.02 100 82.9 64.6 73.8 2.5 100
112745 ELIZABETH 7.20 2.71 100 82.4 63.1 72.7 2.1 100
113262 FREEPORT_WASTE_WTR_PL 12.11 7.71 100 82.7 63.1 72.9 2.4 100
113290 FULTON_L&D_#13 3.45 -1.04 100 83.9 66.3 75.1 3.8 100
113312 GALENA 6.04 1.55 100 na na na na 00
113335 GALVA 6.98 2.87 100 84.9 65.4 75.2 2.7 100
113384 GENESEO 8.08 3.78 100 85.0 67.5 76.2 4.0 100
114013 HENNEPIN_WATER_TRTMT 8.92 4.93 100 86.1 66.0 76.0 3.9 100
114355 ILLINOIS_CITY_DAM_16 7.80 3.55 100 86.5 68.0 77.2 4.3 100
114710 KEWANEE_1_E 7.66 3.52 100 83.8 64.9 74.4 2.0 100
114879 LANARK 6.81 2.33 100 na na na na 00
115751 MOLINE_WSO_AP 7.34 3.05 100 86.3 68.2 77.2 4.7 100
115833 MORRISON 6.01 1.57 100 85.2 64.3 74.7 3.3 100
115901 MOUNT_CARROLL 5.52 1.01 100 84.7 63.7 74.2 3.3 100
116080 NEW_BOSTON_DAM_17 7.15 3.05 100 87.3 68.0 77.6 4.3 100
116490 OREGON_3_SW 8.29 3.93 100 na na na na 00
116661 PAW_PAW_2_NW 6.52 2.40 100 81.4 63.1 72.2 0.9 100
116897 POLO_5_NW 7.32 2.89 100 84.4 63.6 74.0 3.1 100
116998 PRINCETON 9.57 5.48 100 84.7 66.7 75.7 3.6 100
117014 PROPHETSTOWN 8.83 4.45 100 na na na na 00
117354 ROCHELLE 10.23 5.98 100 81.7 64.0 72.8 1.9 100
117370 ROCK_FALLS_3_NE 7.25 2.90 100 na na na na 00
117382 ROCKFORD_AIRPORT 13.98 9.68 100 83.8 65.3 74.5 4.0 100
117391 ROCK_ISLAND_L&D_15 6.10 1.79 100 85.4 69.7 77.5 5.2 100
117470 ROSCOE_2_SE 12.24 7.96 100 na na na na 00
117916 SHIRLAND 11.62 7.31 94 na na na na 00
118254 STEWARD_3S 10.53 6.35 100 na na na na 00
118293 STOCKTON_3_NNE 7.16 2.71 100 81.1 62.5 71.8 1.5 100
119469 WOODHULL 5.79 1.69 100 na na na na 00
State: Illinois Climate Division: 2
From 8/01/2007 To 8/31/2007
Station Percent Percent
ID Precipitation Avail <--- Temperature ----> Avail
Number Name Obs Dev Data High Low Mean Dev Data
-------------------------------------------------------------------------------
110203 ANTIOCH 11.42 7.12 100 81.1 65.0 73.1 2.5 100
110338 AURORA 9.20 5.03 100 83.0 66.6 74.8 3.2 100
110442 BARRINGTON_3SW 13.84 9.50 100 80.4 64.3 72.3 1.1 100
110583 BELVIDERE 15.29 10.97 100 na na na na 00
111420 CHANNAHON_DRESDEN_ISLAND 10.35 6.48 100 85.0 66.9 75.9 3.9 100
111497 CHICAGO_BOTANICAL_GARDEN 12.76 8.52 100 83.8 63.7 73.8 2.5 100
111549 CHICAGO_OHARE_AP 9.70 5.39 100 83.2 66.4 74.8 3.2 100
111550 CHICAGO_NORTHERLY_ISLAND na na 00 82.9 70.1 76.5 4.9 100
111577 CHICAGO_MIDWAY_AP_3SW 8.76 4.69 100 83.1 67.9 75.5 3.8 100
112048 CRYSTAL_LAKE_4_NW 12.12 7.80 100 na na na na 00
112223 DE_KALB 12.02 7.74 100 82.4 64.7 73.6 2.5 100
112510 EARLVILLE_3_S 10.65 6.59 100 na na na na 00
112709 ELBURN 9.06 4.82 100 na na na na 00
112736 ELGIN 15.69 11.35 100 83.2 63.7 73.4 2.1 100
113392 GENOA_2_SW 16.56 12.23 100 na na na na 00
113490 GLEN_ELLYN_4_S 8.28 4.08 100 na na na na 00
113902 HARVARD 11.55 7.24 100 na na na na 00
114530 JOLIET_BRANDON_RD_DAM 10.75 6.82 100 83.1 66.3 74.7 2.8 100
114816 LA_GRANGE 8.72 4.58 100 na na na na 00
114890 LANSING 6.77 2.86 100 na na na na 00
115110 LITTLE_RED_SCHOOL_HOUSE 9.68 5.60 100 na na na na 00
115313 MANHATTAN_4_SW 0.55 -3.24 100 na na na na 00
115326 MARENGO 14.19 9.87 100 83.3 63.8 73.5 2.9 100
115372 MARSEILLES_LOCK 14.46 10.56 100 84.4 64.6 74.5 2.4 100
115493 MCHENRY_WG_STRATTON_L&D 12.71 8.39 100 80.6 63.3 72.0 1.1 100
115562 MENDOTA__2_SE 10.91 6.81 100 na na na na 00
115763 MONEE_RESERVOIR 13.14 9.31 74 na na na na 00
115825 MORRIS_1_NW 12.59 8.72 100 85.1 67.2 76.2 4.1 100
115961 MUNDELEIN_4_WSW 12.48 8.16 100 82.0 63.8 72.9 1.8 100
116065 NEWARK_2_SSE 11.90 7.90 68 na na na na 00
116281 OAK_BROOK_2W 8.13 3.93 100 na na na na 00
116526 OTTAWA_5SW 14.27 10.34 100 84.0 66.3 75.1 3.1 100
116616 PARK_FOREST 6.88 2.99 94 85.0 65.9 75.4 3.7 71
116725 PEOTONE 16.06 12.27 100 na na na na 00
116753 PERU 11.66 7.67 100 84.7 65.4 75.0 3.0 100
116849 PLAINFIELD_3_NE 9.38 5.33 100 na na na na 00
116855 PLANO 10.86 6.77 100 na na na na 00
117457 ROMEOVILLE_WFO 9.76 5.75 100 83.2 66.3 74.7 2.9 100
117579 ST_CHARLES_2NW_RIVER 8.09 3.80 26 na na na na 00
117586 ST_CHARLES_7_NW 10.49 6.18 100 na na na na 00
117833 SHABBONA_3S 8.30 4.14 100 na na na na 00
118192 SPRING_GROVE 10.06 5.76 100 na na na na 00
118324 STREAMWOOD 11.79 7.45 100 86.9 61.9 74.4 2.9 100
119221 WHEATON_3_SE 5.56 1.37 81 83.9 63.2 73.5 1.8 81
119480 WOODSTOCK_5_NW 12.96 8.64 100 na na na na 00
119827 YORKVILLE_3_SW 11.17 7.12 87 na na na na 00
State: Illinois Climate Division: 3
From 8/01/2007 To 8/31/2007
Station Percent Percent
ID Precipitation Avail <--- Temperature ----> Avail
Number Name Obs Dev Data High Low Mean Dev Data
-------------------------------------------------------------------------------
110140 ALTONA 1.71 -2.37 39 na na na na 00
110330 AUGUSTA 2.87 -0.69 100 na na na na 00
110356 AVON_5_NE 4.59 0.87 100 na na na na 00
110598 BENTLEY 5.09 1.47 100 92.5 67.3 79.9 5.7 100
110987 BROOKLYN 1.68 -1.87 100 na na na na 00
111316 CARTHAGE 3.47 -0.18 100 na na na na 00
112125 DAHINDA_1_NE 5.37 1.46 100 na na na na 00
113320 GALESBURG 6.37 2.44 100 86.3 68.4 77.3 4.3 100
113455 GLADSTONE_DAM_18 6.14 2.22 100 87.5 68.4 77.9 4.4 100
113530 GOLDEN 2.67 -0.84 100 91.5 67.2 79.3 4.9 100
114780 KNOXVILLE 6.93 3.05 100 85.8 66.6 76.2 3.3 100
114823 LA_HARPE 4.96 1.24 100 89.3 65.4 77.3 3.6 100
115038 LEWISTOWN 2.56 -1.02 100 na na na na 00
115280 MACOMB 1.65 -2.00 100 na na na na 00
115334 MARIETTA 3.16 -0.47 29 na na na na 00
115768 MONMOUTH 6.34 2.42 97 88.1 67.1 77.6 4.4 100
115772 MONMOUTH_4NW 6.40 2.46 100 85.3 65.7 75.5 2.2 100
115935 MOUNT_STERLING 1.11 -2.35 100 na na na na 00
116670 PAYSON 3.76 0.30 100 na na na na 00
116970 PRAIRIE_CITY_2S 2.56 -1.10 100 89.0 67.7 78.4 5.0 100
117072 QUINCY_REGIONAL_AP 2.50 -0.96 100 91.0 68.7 79.9 5.2 100
117077 QUINCY_DAM_21 5.60 2.12 100 91.0 70.1 80.5 5.7 100
117278 RIPLEY 0.55 -2.93 16 na na na na 00
117551 RUSHVILLE 0.89 -2.62 100 90.6 67.3 79.0 4.9 100
118204 ST_DAVID 3.09 -0.50 100 na na na na 00
119816 YATES_CITY 4.85 1.11 100 na na na na 00
State: Illinois Climate Division: 4
From 8/01/2007 To 8/31/2007
Station Percent Percent
ID Precipitation Avail <--- Temperature ----> Avail
Number Name Obs Dev Data High Low Mean Dev Data
-------------------------------------------------------------------------------
110305 ATHENS_2_N 1.45 -2.16 90 na na na na 00
110306 ATHENS_2SW 2.78 -0.78 100 88.5 67.2 77.8 3.9 100
110761 BLOOMINGTON_WATERWORKS 2.04 -1.64 100 na na na na 00
110764 BLOOMINGTON_5W 1.61 -2.06 100 86.8 66.1 76.4 3.4 100
110868 BRADFORD_3SSE 5.26 1.25 100 na na na na 00
111083 BUFFALO 2.98 -0.66 100 na na na na 00
111236 CAMP_GROVE_2_SW 6.44 2.50 100 na na na na 00
111475 CHENOA 4.47 0.80 100 86.6 66.0 76.3 3.8 100
111627 CHILLICOTHE 6.96 3.16 100 na na na na 00
111743 CLINTON_1_SSW 1.90 -1.98 100 na na na na 00
111836 CONGERVILLE_2_NW 3.31 -0.30 100 88.5 65.5 77.0 4.1 100
112193 DECATUR 0.64 -3.13 90 na na na na 00
112197 DECATUR_4N 1.12 -2.73 90 92.9 65.7 79.3 5.5 100
112854 EUREKA 5.54 1.92 100 na na na na 00
112993 FARMER_CITY 1.48 -2.38 100 na na na na 00
113722 GROVELAND_2WNW 3.16 -0.46 100 na na na na 00
113940 HAVANA_4_NNE 2.54 -1.02 100 na na na na 00
114805 LACON_1_N 6.25 2.38 100 88.6 68.2 78.4 5.9 100
115041 LEXINGTON 3.91 0.27 100 na na na na 00
115079 LINCOLN 0.89 -2.86 100 na na na na 00
115272 MACKINAW_1N 2.60 -1.03 100 na na na na 00
115712 MINONK 7.72 4.00 100 86.4 65.4 75.9 3.4 100
115876 MORTON 2.91 -0.71 100 na na na na 00
115927 MOUNT_PULASKI 3.04 -0.78 100 na na na na 00
116200 NORMAL_4NE 2.57 -1.09 100 88.5 65.0 76.7 3.8 100
116703 PEORIA_AIRPORT_3SW 3.10 -0.52 100 na na na na 00
116711 PEORIA_GTR_PEORIA_RGNL_A 4.12 0.50 100 87.8 68.7 78.3 5.4 100
116760 PETERSBURG_3_SSW 2.99 -0.55 100 na na na na 00
116765 PETERSBURG_2SW 2.27 -1.27 100 na na na na 00
117004 PRINCEVILLE_2W 4.97 1.11 97 87.9 65.0 76.5 3.8 100
117329 ROANOKE 6.16 2.48 100 na na na na 00
117590 SAYBROOK_2N 2.98 -0.79 100 na na na na 00
118222 STANFORD_2S 1.56 -2.14 100 na na na na 00
118630 TOULON_2_SSW 6.87 2.87 100 na na na na 00
118797 VARNA 8.09 4.25 100 na na na na 00
118990 WASHINGTON_2_WSW 5.53 1.90 100 na na na na 00
State: Illinois Climate Division: 5
From 8/01/2007 To 8/31/2007
Station Percent Percent
ID Precipitation Avail <--- Temperature ----> Avail
Number Name Obs Dev Data High Low Mean Dev Data
-------------------------------------------------------------------------------
110803 BOURBONNAIS_3NW 10.18 6.40 100 na na na na 00
111447 CHATSWORTH 6.62 2.88 100 na na na na 00
111655 CISCO 1.29 -2.67 100 na na na na 00
112140 DANVILLE 3.03 -0.91 100 89.2 67.6 78.4 5.6 100
112145 DANVILLE_SEWAGE_PLANT 2.89 -1.07 100 na na na na 00
112500 DWIGHT 10.65 6.85 100 83.5 64.4 74.0 1.8 74
112923 FAIRBURY__WWTP 6.07 2.36 100 na na na na 00
113061 FISHER 1.53 -2.32 100 na na na na 00
113413 GIBSON_CITY 3.63 -0.16 100 86.0 66.1 76.0 3.3 100
113774 HAMMOND 2.11 -1.68 100 na na na na 00
114198 HOOPESTON_1_NE 4.46 0.60 100 88.5 66.3 77.4 5.1 100
114603 KANKAKEE_METRO_WASTWTR 6.14 2.36 77 na na na na 00
115292 MAHOMET 2.31 -1.58 100 na na na na 00
115646 MILFORD_5_NW 2.70 -1.11 100 na na na na 00
115758 MOMENCE_5_ENE 6.79 2.98 100 na na na na 00
115792 MONTICELLO_NO_2 1.87 -2.08 100 na na na na 00
116344 OGDEN 2.73 -1.21 100 na na na na 00
116663 PAXTON_2_WSW 4.35 0.52 100 86.3 64.1 75.2 2.6 100
116769 PHILO 3.00 -0.97 100 na na na na 00
116819 PIPER_CITY 8.79 5.03 100 86.1 64.1 75.1 2.9 100
116910 PONTIAC 7.21 3.48 100 85.5 67.6 76.6 4.2 100
117150 RANTOUL 1.51 -2.36 94 90.6 67.3 78.9 6.1 100
117952 SIDELL_5NW 1.67 -2.29 100 88.8 64.9 76.9 3.7 100
118194 ST_ANNE 9.28 5.48 100 na na na na 00
118353 STREATOR_3_SE 9.82 6.01 100 na na na na 00
118632 TOULON_2_SSE 6.87 2.87 100 na na na na 00
118740 URBANA 1.48 -2.46 100 88.8 67.5 78.1 4.9 100
118742 URBANA_2 2.19 -1.74 100 na na na na 00
118745 URBANA_S_AGRONOMY_FARM 2.22 -1.72 100 88.6 70.2 79.4 6.2 100
119021 WATSEKA_2_NW 4.73 0.93 100 85.5 64.2 74.8 2.8 100
Normals used for the deviations are from a grid and should only be considered
as an approximation for a particular station
University of Illinois at Urbana-Champaign- Illinois State Water Survey
- All files and information ©2008
- Last Modified: March 6, 2008