Cliff Mass: East Coast versus West Coast. The continental weather seesaw…
It often seems that the U.S. east and west coasts are on some kind of weather seesaw. Recently westerners have been complaining that the East Coast is warm and the West is cool, but sometimes it goes the other way. Quite frequently, warm records are found on one coast when cool records are occurring on the other. The coastal weather seesaw some people call it. And now, a new index reveals its intimate details. In this blog you will view the Coastal Contrast Index (CCI), an advanced new diagnostic tool never shown before in public.
The CCI is based on the difference between the temperatures of major cites on both coasts. Specifically, the mean temperatures of eastern cities (TE) minus the mean temperatures of western cities (TW).
For TE we use Boston, New York, Washington DC and Atlanta. For TW we use Seattle, Portland, San Francisco, and Los Angeles. The selection of these particular cities is based on arcane scientific principles that are too complicated to explain in this blog. Yes, the latitudes don’t match exactly, but that is where the people are. And I should note that the data analysis for the CCI was done by data analyst extraordinaire of the UW: Neal Johnson.
Ready to see it? Take a look at this graph… (more)