They were informed about tropical moisture that could be pulled into the country by the low.

Hurricane Calvin brought addition rainfall to a nation which had just been drenched by tropical moisture over the previous two weeks.

In late August 2011, much of the western Caribbean came under the influence of abundant tropical moisture.

With a lack of tropical moisture, its corresponding convection was minimal and scattered.

Although it stayed well offshore, the storm enhanced tropical moisture over Bermuda, causing beneficial rainfall in dry areas.

The next day, Alma made landfall on Nicaragua, pulling deep tropical moisture into the region.

A cold front that stalled on September 15 acted as a conveyor belt of tropical moisture, which reached the area early that same day.

The tropical moisture from the system led to a heavy snowfall over the mountains.

The rainy season runs from June to October when winds bring in tropical moisture from the sea.

Large quantities of tropical moisture fed the storm, allowing it to produce torrential rainfall.