That, combined with temperature inversion (warmer air trapped above cooler air) helps the radio waves bounce hundreds of miles.
Nosoff caught the occurrence this morning outside the News 12 Long Island studios in Bethpage, New York, where Long Island's radio station WBLI was replaced by Rumba 106.1 Philadelphia. Watch the video below:
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Toward the East End, Philadelphia's 105.3 WDAS made listening to Party 105.3 difficult.
In these conditions, normally empty frequencies have other radio stations from far away. This morning, car radios picked up several radio stations over 300 miles away from Richmond, Virginia.