IEM Daily Feature
Thursday, 02 December 2010
Thursday, 02 December 2010
When does winter start?
Posted: 02 Dec 2010 05:48 AM
While yesterday was the start of meteorological winter, the 21st is
the start of the commonly defined winter season. If one considers
winter a 91 day period with the coldest climatological temperatures,
the actual start of winter is slightly before 1 December in Iowa. The
feature map presents an IEM produced analysis of the start date of the
coldest 91 consecutive day period based on climatology data. The map
nicely shows the start of this period comes first for those in the
western US and marches east with a ~4 week difference between the two.
The coastal regions of California enjoy the moderating effects of the
Pacific Ocean and appear to be the last to join the winter period.
Voting:
Good = 31
Bad = 4
Tags: winter temp
Voting:
Good = 31
Bad = 4
Tags: winter temp