1.   On Thursday, clusters of showers and thunderstorms will be concentrated across the southern Great Lakes region as the front continues to move slowly north.

2.   Showers will be most concentrated across western South Dakota.

3.   Showers will be more concentrated across northern New England and the Lower Mississippi Valley, where jet stream disturbances help to destablize the atmosphere.

4.   However, clouds and showers will be concentrated mainly across the south and east sections of our area.

5.   Showers and isolated thunderstorms are expected to develop first and be more concentrated across the interior of Puerto Rico then spread out to affect other portions of the island.

6.   These showers and thunderstorms will be concentrated mainly across the north, northwest and northern interior sections of Puerto Rico.

7.   This afternoon, showers should be concentrated across interior west sections of Puerto Rico.