What is a Wedge?

A few light rain showers have popped up this morning East of I-65 around Anniston. The reason we are seeing these showers this morning is due a wedge to the East of us. A Wedge refers to an elongated area of shallow high pressure at the earth's surface. It is generally associated with cold air east of the Rockies or Appalachians. Areas west of I-65 this afternoon will warm up into the mid to upper 70's. Communities east of I-65 will not warm up quite as much this afternoon due to the cloud cover and wedge off to the east.