Tuesday, December 4, 2012

Looking Back at Meteorological Fall 2012

Meteorologists break the year up to in four equal segments for spring, summer, fall and winter.  This makes it easier when looking at seasons.
(Click to see larger version.)

Meteorological Seasons:
  • Spring – March 1 – May 31
  • Summer – June 1 – August 31
  • Fall – September 1 – November 30
  • Winter – December 1 – February 28/29

METEOROLOGICAL FALL 2012

Most of 2012 has gone in to the books above normal, however Meteorological Fall bucked the trend.  In the Midwest, fall went in to the books below normal.
 
Below is a breakdown of the monthly temperatures for Cape Girardeau, Carbondale, Indianapolis and St. Louis.
  
CITY
SEPTEMBER
OCTOBER
NOVEMBER
Cape Girardeau
-0.6°
-1.9°
-1.9°
Carbondale
-0.6°
-2.3°
-2.4°
Indianapolis
-1.7°
-2.3°
-2.2°
St. Louis
-1.0°
-1.9°
-0.8°

Interestingly, for all four cities listed above, the last time any of the cities had three consecutive months below normal was December 2009, January 2010 and February 2010.

Below is a breakdown of the number of days each month below normal.
 
METEOROLOGICAL FALL 2012
CITY
SEPTEMBER
OCTOBER
NOVEMBER
TOTAL
Cape Girardeau
14
18
18
50
(55% of days)
Indianapolis
17
20
18
55
(60% of days)
St. Louis
15
19
18
52
(57% of days)

As you can see, the majority of days during the three months were below normal.

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