Chicago WX Posted December 31, 2010 Share Posted December 31, 2010 A new set of 30 year normals is upon us. Out with 1971-00, in with 1981-2010. I'm not sure exactly when the new official normals will be released, but I thought it'd be fun to see everyone post their new season snowfall averages for the 1981-2010 set. I also realize that NCDC has their way of smoothing the numbers, so these may not be the exact figures, but t should be pretty close. Chicago - ORD 81-10...71-00 (change) January: 11.7"...11.3" (+0.4") February: 8.4"...8.3" (+0.1") March: 5.4"...6.0" (-0.6") April: 1.1"...1.6" (-0.5") October: 0.3"...0.3" (0.0") November: 1.4"...1.8" (-0.4") December: 8.5"...8.7" (-0.2") Total: 36.8"...38.0" (-1.2") So it looks like Chicago lost 1.2" of snow with the new normals. Gains were made with January and February, bit all other months lost some. The December average really made ground with the past 4 Decembers, it could have been much lower due to the pathetic late 80's and 90's. Random numbers from the 1981-2010 data set: Highest yearly snowfall total: 64.9" in 2008 Lowest yearly snowfall total: 9.8" in 2001 Highest single month snowfall total (DJF): 30.9" in December 2000 Lowest single month snowfall total (DJF): T in February 1987 and 1998 Link to comment Share on other sites More sharing options...
snowstormcanuck Posted December 31, 2010 Share Posted December 31, 2010 Toronto (Downtown) Oct......T (-0.1") Nov....3.1" (-0.1") Dec....10.3" (-2.4") Jan.....14.0" (-1.0") Feb.....11.2" (+0.7") Mar.....7.6" (-1.1") Apr......1.8" (-0.6") ---------------------------- 1981-2010 avg = 48.0" (-4.4") Snowiest calendar year = 2008 (83.0") Least snowiest calendar year = 2006 (12.1") Snoweist month (DJF) = Jan 1999 (46.6") Least snoweist month (DJF) = Dec 2006/Feb 1998 (0.3") Certainly hurt losing the "snowy 70s". Link to comment Share on other sites More sharing options...
michsnowfreak Posted December 31, 2010 Share Posted December 31, 2010 Based on my calculations for Detroit the new set of normals will lose a negligible 0.3" off of seasonal average. this is due largely to a relatively big drop in November, as gains were made in Jan/Feb. So the new "normals" make the onset of winter a little more tame and the dead of winter a little more harsh. As you said though, NCDC does tend to smooth things over, so I merely exchanged the 1971-80 with 2001-10 data set for a third of the avg. Detroit- DTW 81-10...71-00 (change) October: 0.2"...0.3" (-0.1") November: 1.4"...2.7" (-1.3") December: 10.3"...11.1" (-0.8") January: 12.5"...11.9" (+0.6") February: 10.8"...9.3" (+1.5") March: 6.7"...7.0" (-0.3") April: 1.8"...1.7" (+0.1") May: T......T (0.0") Total: 43.7"...44.0" (-0.3") Random numbers from the 1981-2010 data set: Highest yearly snowfall total: 82.6" in 2008 Lowest yearly snowfall total: 13.9" in 1998 Highest single month snowfall total (DJF): 27.3" in January 1999 Lowest single month snowfall total (DJF): T in February 1998 Link to comment Share on other sites More sharing options...
Trent Posted January 3, 2011 Share Posted January 3, 2011 I'm not sure exactly how they calculate the new normals, but CLE will actually GAIN about 5" to a new average of 68.3" or thereabouts. That's a pretty significant jump. Link to comment Share on other sites More sharing options...
OHSnow Posted January 3, 2011 Share Posted January 3, 2011 I'm not sure exactly how they calculate the new normals, but CLE will actually GAIN about 5" to a new average of 68.3" or thereabouts. That's a pretty significant jump. How much will YNG and MFD gain? Link to comment Share on other sites More sharing options...
cincywxpro Posted January 5, 2011 Share Posted January 5, 2011 Here are the unofficial snowfall averages for Cincinnati: October: 0.4" (No change) November: 0.4" (-0.9") December: 4.7" (+1.0") January: 6.5" (-1.3") February: 6.5" (+0.5") March: 3.0" (-0.8") April: 0.5" (-0.1") ------------------------------- Total : 22.0" (-1.6") Link to comment Share on other sites More sharing options...
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