January 23 UPDATE: You may recall that the original bomb piece included a link to Brooks Garner's blog and WIS-TV web-weather.. Well, we HAVE heard from him.. Below describes their recent unusual conditions..
Todd,
Thought you might be interested in this:
We're having one heck of wedge today in South Carolina. It's near
freezing in our northern viewing area, and near 65 in our southern
viewing area! It's all thanks to cold air damming, around a stubborn
area of High Pressure in the DelMarVa. As you know, it gets wedged
down the eastern spine of the Apps, into SC. Even though 850 temps
are 9+C, with a 50kt LLJ, the surface has a NNE wind at 5, with a
shallow layer of CHILL! Brrr. We had icing late last week in a
similar situation. The difference was that the air was much dryer
last week. It was just as "warm" (well, "cold") but dews were in the
teens. Last week when it started raining thru that dry air, major
evap. cooling occured, which dropped temps from the low 40s, to the
upper 20s! This go around, we're marginally freezing. (SEE IMAGE BELOW)
It's 67 in Charleston, and 39 in Columbia -- just a one hour drive!!
The mix of orographic lift and associated dry adiabatic cooling, plus
some evap. cooling with somewhat low dews is driving inland temps to
chi-chi-chilllly levels! It's flipflops for the beaches and winter
coats for the Piedmont.
-Brooks
Jan 16, 2007 - The late week event features damaging winds on Saturday following a "bombogenesis" or rapid intensification of a storm. Read more about bombogenesis at Jeff Haby's HabysHints. Learn more about Low Pressure systems At the University of Illinois WW2010 page "Low Pressure Centers".
Read more about storms at NASA's Clouds Generated During Midlatitude Storms
"Categorizing storms according to their sea level pressure patterns is another way of classifying storms. By plotting central sea level pressure against time a pressure profile can be created. All storms do not conform to the same sea level pressure pattern throughout its life. Some storms can be classified as classical storms. These are storms where their pressure profiles are "V" shaped or have a dip pattern in pressure. Oscillating storms are those with insignificant pressure changes, while ascending storms increase in pressure over time. Descending storms are those that decrease over time in pressure only."
Also possibly of interest given the anomalous season thus far:
Northern Hemisphere Winter Surface Temperature Predictions based on Land-Atmosphere Fall Anomalies