A New Year for Heating Degree Days and Snowfall

Happy New Year!

Well, at least for heating degree days (HDD) and snowfall, anyway, tomorrow.  Rather than using a calendar year for HDD and snowfall totals, meteorologists and climatologists usually use a July 1 - June 30 year instead, since these phenomena primarily occur during the cold season.

Heating degree days are calculated by subtracting the average temperature for a calendar day from 65.  For example, if the average temperature for a particular day is 35, then 65 - 35 = 30 HDD.  Heating degree days are used by utilities as a measure of energy demand.

Location

2013-14 HDD

Departure from Normal

Bowling Green

4533

+487

Frankfort

5223

+524

Lexington

4855

+247

Louisville Bowman

4706

+439

Louisville Standiford

4547

+454

 

Location

2013-14 Snowfall

Departure from Normal

Bowling Green

10.4"

+1.3"

Lexington

27.1"

+14.1"

Louisville

26.0"

+13.5"



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