The Weather Blog

November 19, 2009|By FRANK ROYLANCE | FRANK ROYLANCE,frank.roylance@baltsun.com

John Polyniak of Lake Shore says that in late fall, it often gets cold and frosty just before a warm front arrives. "Why?" he asks. Steve Zubrick, an NWS science officer, says it's a cycle. A cold front passes by, temperatures drop. High pressure moves in, skies clear, winds calm, frost forms. Then the high moves east, allowing the next low to approach. It drags in a warm front, just ahead of the next cold front. Cycles.

Up-to-the-minute local data and radar at marylandweather.com

Baltimore Sun Articles
|
|
|
Please note the green-lined linked article text has been applied commercially without any involvement from our newsroom editors, reporters or any other editorial staff.