Meanwhile, in the eastern half of the nation, an upper-level trough of low pressure is likely to develop at about the same time the ridging pops up in the western part of the US and Canada. With the combination of the western US/Canada ridging and trough over the central/eastern US, the upper-level wind flow later this month will be much more conducive to transporting cold air masses from Canada into the eastern half of the nation. This potential change to the overall temperature pattern should also raise the chances for snow in the central and eastern US…largely non-existent in recent weeks.
Bottom line…important changes are on the way for much of North America beginning in about ten days or so.
Meteorologist Paul Dorian
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