The Weather Page

March 23, 2007|By FRANK ROYLANCE | FRANK ROYLANCE,Sun Reporter -- Weather Blogger

Daily Sun reader Ed O. Lohmeyer, 86, writes from Baltimore: "What causes the jet stream to move in the pattern it does, and what causes it to drastically change?" The jet stream flows along the shifting boundaries between big masses of warm and cold air, like a conga line through a crowded party, steering energy and storms. As arctic air plunges south in winter, or hot air moves north in summer, the jet stream moves with them. Spring and fall may find it snaking all over the map.

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