1.   Frontal zones gave periods of rain followed by brighter, more showery conditions.

2.   An unusually strong temperature contrast will occur across the frontal zone.

3.   Broken middle clouds will streak southeast from the frontal zone, dimming the sun at times across the eastern Plains.

4.   Farther east, clouds and scattered showers will occur near the frontal zone from northern Alabama to the Carolinas.

5.   Meanwhile, scattered showers will straddle a stalled frontal zone in southern Florida.

6.   On Wednesday, the system began interacting with a frontal zone to its north.

7.   Rain and embedded thunder will plague the interior Northeast on Tuesday as a frontal zone crosses the region.

8.   Scattered thunder will develop, with the strongest storms most likely near a stalling frontal zone extending from the southern Appalachians to the Tennessee Valley.

9.   The rain will spread into the Northeast and Middle Atlantic States overnight and on Monday as the low travels along the slow-moving frontal zone.