41.   A weak trough pushing into the Appalachians was expected to bring rain to the Carolinas and Virginias.

42.   A weather map analysis indicated a weak surface trough moving across our coastal waters early this morning.

43.   Ahead of this cold front are several weak pre-frontal troughs.

44.   Another weak low level trough across Lesser Antilles will affect our coastal waters on Sunday.

45.   At the same time, a weak low level trough moving westward across the eastern Caribbean may also reach our area before this evening.

46.   At middle to upper levels of the atmosphere a weak trough of low pressure is dominating the region.

47.   Between these two high pressures is a weak low-pressure trough located just east of the Leeward Islands and extending south to the Windward Islands.

48.   Doppler weather radar still shows a weak surface frontal trough remaining over the offshore waters southwest of Puerto Rico.

49.   For Friday, a few more clouds are possible across the area as a weak mid level trough moves eastward north of the region.

50.   However, patches of clouds were noted over the Mona Passage and western Puerto Rico and were associated with a weak low-level trough.