IEM Daily Feature
Sunday, 17 March 2013
Sunday, 17 March 2013
Blizzard Warning Climatology
Posted: 17 Mar 2013 03:55 PM
Blizzard Warnings are in effect over far northern Iowa for Monday
thanks to a quick moving storm system that will dump snow and then blow
it around a bunch. Are blizzard warnings common as we are mere days
from spring? The featured chart attempts to provide a climatology of
blizzard warnings in the continental US by week of the year. The unit
is the combination of a single NWS weather forecast office issuing a
blizzard warning for a given week of the year. For example, the peak
value in late December represents, on average, seven NWS offices
issuing at least one blizzard warning per year. The chart shows a
remarkable drop during the heart of winter in January. The reason for
this drop is that blizzard systems are driven by large temperature
gradients and amble supplies of moisture, both of which are somewhat
limited in January as most the country is at its coldest.
Voting:
Good = 7
Bad = 2
Tags: blizzard nws
Voting:
Good = 7
Bad = 2
Tags: blizzard nws