1.   Several clusters of thunderstorms are possible in Missouri and Iowa as a wedge of very warm air from Texas feeds into the low pressure circulation.

2.   A broad and weak low pressure circulation presently exists across the region, producing very light and variable winds.

3.   A large and broad upper level low pressure circulation resides over the eastern half of the Caribbean this morning and will drift very slowly west and reorganize through Monday.

4.   A weak low pressure trough extends from near Guadeloupe and Martinique this morning north-northeast across the Atlantic to a very weak low pressure circulation over the central Atlantic.

5.   The clouds were produce by a weak low pressure circulation in the middle atmosphere east of Puerto Rico.