JACKSONVILLE, Fla -- A big change from the long mid-winter warm spell is on the way. A cold front will roll west to east Thursday bringing clouds, showers and a gusty wind shift to the northwest. Temperatures will top out near 70 degrees during the middle of the day then fall through the afternoon and early evening. The abrupt change combined with strong winds will make the air feel especially chilly. Rainfall will not be heavy averaging less than a quarter of an inch but will briefly lower pollen counts some by late in the day. Friday will much cooler with gusty north winds as temperatures struggle to reach 60 degrees.