Chicago WX Posted September 4, 2011 Share Posted September 4, 2011 January 1 through August 31, 2011 is the wettest such period at O'Hare Airport...by a relatively large margin. Records at ORD began in November of 1958 (or available data did). Note this is only for records at O'Hare from 1959 to present. Top 10 wettest January 1 through August 31 periods at ORD... 1) 38.31" - 2011 2) 35.72" - 1993 3) 32.28" - 1987 4) 31.54" - 2009 5) 31.34" - 1975 6) 30.79" - 1999 7) 30.67" - 1983 8) 30.63" - 1981 9) 30.45" - 1990 10) 30.21" - 1979 -Long term average normal January 1-August 31 precipitation at ORD is 24.76". -36 years never reached 38.31" total. 2011 monthly precipitation and ranks at ORD all-time... January: 0.92" (40/53) February: 3.52" (3/53) March: 2.62" (26/53) April: 4.90" (12/53) May: 7.27" (1/53) June: 3.39" (30/53) July: 11.15" (1/53) August: 4.54" (18/53) July 2011 ranks as the 5th wettest month at ORD all-time... 1) 17.10" - August 1987 2) 13.63" - September 2008 3) 12.25" - August 2001 4) 11.44" - September 1961 5) 11.15" - July 2011 Link to comment Share on other sites More sharing options...
Hoosier Posted September 4, 2011 Share Posted September 4, 2011 The haves and the have nots in the Midwest are not very far apart. Link to comment Share on other sites More sharing options...
Chicago WX Posted September 4, 2011 Author Share Posted September 4, 2011 The haves and the have nots in the Midwest are not very far apart. Yep. Just look at this past summer. Using LAF and two relatively close locations to us... Lafayette, IN (LAF): 14.76" (+3.23") Champaign, IL (CMI): 5.82" (-6.30") Indianapolis, IN (IND): 7.34" (-4.59") Link to comment Share on other sites More sharing options...
Chicago WX Posted September 4, 2011 Author Share Posted September 4, 2011 Looking into the future, here's the top 10 wettest years at O'Hare Airport (1959 to 2010)... 1) 50.86" - 2008 2) 49.35" - 1983 3) 45.77" - 2001 4) 45.47" - 1972 5) 44.90" - 1993 6) 44.68" - 1982 7) 43.40" - 1970 8) 43.12" - 1990 9) 42.57" - 2009 10) 41.93" - 2006 If not another drop of rain fell the rest of this year, 2011 would go down as the 17th wettest at ORD. Link to comment Share on other sites More sharing options...
Chicago WX Posted September 4, 2011 Author Share Posted September 4, 2011 I don't have the August data yet, but here's the wettest January-July periods at the West Lafayette COOP (records since 1901). 1) 35.46" - 1929 2) 33.65" - 1927 3) 33.64" - 1998 4) 33.59" - 1909 5) 32.48" - 1957 6) 31.83" - 2011 7) 30.57" - 1950 8) 30.46" - 1939 9) 30.43" - 1990 10) 30.32" - 1902 Link to comment Share on other sites More sharing options...
Trent Posted September 9, 2011 Share Posted September 9, 2011 When you look at the YTD precip maps, It's definitely been more wet than dry, but there have been a few big dry pockets in between the wet spots. It's just September 8th, but Cleveland is already in the top ten wettest years on record (going way back to mid 1870s!) 1. 53.83 1990 2. 53.51 1878 3. 50.38 1950 4. 48.53 1992 5. 48.34 1972 6. 47.82 1890 7. 46.44 1996 8. 44.59 2008 x. 44.29 2011 *as of Sept 8th 9. 44.22 1951 10. 43.99 1947 A top 3 wettest year is almost a lock, with wettest year ever likely even if precip starts to run below average through the end of the year. Looking at the YTD % of normal maps, not one area in Ohio is running a deficit for rainfall this year, the only state in the US to show that. It's just incredibly green and lush out there. Looks like mid spring. I wonder what effect this will have on the fall foliage? Link to comment Share on other sites More sharing options...
A-L-E-K Posted September 9, 2011 Share Posted September 9, 2011 Been a great year, tons of action but we've managed plenty of nice stretches mixed in. Probably the best year of weather ever IMBY. Link to comment Share on other sites More sharing options...
Chicago WX Posted September 11, 2011 Author Share Posted September 11, 2011 WL COOP (since 1901) wettest January through August periods. 1) 40.70" - 1909 2) 37.02" - 1929 3) 36.52" - 2011 4) 36.14" - 1927 5) 36.05" - 1957 6) 35.01" - 1998 7) 34.54" - 1958 8) 34.41" - 1990 9) 33.89" - 1907 10) 33.64" - 1950 1981-10 normal Jan-Aug precipitation: 26.63" Link to comment Share on other sites More sharing options...
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