After Friday, no big storms for a while, but the dreaded polar vortex back later next week

After a line of rain – with thunderstorms – lingers over the east coast on Friday, we go for a while without major storms, but a polar low will drive cold air into the midwest and northeast starting by the middle of next week, with the coldest air arriving by the beginning of March.

Look below at the computer forecast map for the northern hemisphere at one kilometer above the surface for Saturday evening MARCH 1st (00Z March 2 on the map); the blue area is the coldest temperatures – look at the area of blue extending from the USA on the lower right back across the North Pole to Siberia.
The solid lines show the wind flow.

From the ncep.noaa.gov website, where the US weather models live

From the ncep.noaa.gov website, where the US weather models live

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