41NM SSW Cape Constantine AK

Synopsis: A 978 mb N Pacific low 80 nm E of Shemya this morning moves to 100 nm N of Attu at 985 mb Mon afternoon before dissipating through Tue morning. Another N Pacific low 140 nm S of Adak at 976 mb Monday evening moves to 360 nm N of Amchitka at 989 mb Tue afternoon before dissipating. The front from a 965 mb low begins impacting the western Aleutians Tuesday evening.