A So-Called Wet Fall

Another Way to Call it a Wet Fall

Precipitation for September was over 3.00" above normal and ranked #4 wettest September for Detroit. October was .38" below normal, and this combination will not likely be setting records for highest fall precipitation. One way to quantify what a wet fall we've had, though, is to look back at the days of measurable precipitation (days with .01" or greater).  Detroit recorded 2nd place for days with measurable precipitation in September and October with 31, which falls 2nd to 1925 when there were 32. Interesting as well is that historically  we received 14-16 days of measurable precip in November based and the previous Sep-Oct's with 30 or more days. See chart below:

Days measuring .01" of rain or greater

 

    Sep-Oct Sep-Nov
    Rain Days Rain Days
  1925 (1) 32 46
  2011 (2)
31                   ?
Detroit 1926 (3) 30 46
  1881 (4) 30 45
       
  2006 (1) 28 35
  2001 (2) 27 39
Flint 1941 (3) 27 36
  2011 (9)
25                   ?
       
  1925 (1) 29 41
  1997 (2) 28 44
MBS 1954 (3) 28 42
  2011 (60)
20                   ?

 The weather pattern is setting up to spoil any record-breaking plans we may have though. The first 10 days of November appear to sport only 1 major precipitation event. A dry pattern looks to setup as upper level ridging sets-in.



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