By late Saturday, this Gulf storm will begin a push to the east and likely result in tropical storm-like heavy rainfall and strong winds for Florida and other sections of the SE US as well. In the upper atmosphere, the low over the eastern Gulf will continue to deepen as it turns to the north and east and a northern stream system will begin to play an increasingly important role in the overall pattern. The northern system may very well begin to phase with the southern disturbance creating significant intensification of surface low pressure over the southeastern states by later Sunday. If indeed these two features phase together then the pressure gradient field will tighten dramatically between the intensifying low and departing high pressure well to the northeast – potentially resulting in damaging winds across the eastern states aided by a strong low-level jet streak. Heavy rain and strong winds are likely to spread northward into the Mid-Atlantic/Northeast US from later Sunday into Monday and additional weather threats there could include beach erosion and flooding along coastal sections.
With the lack of cold air at the onset, the likely dominate precipitation type throughout the Mid-Atlantic/Northeast US would be rain from later Sunday into Monday afternoon. However, there is the chance that this intense storm system likely positioned near the Mid-Atlantic/Northeast US coastline can draw in enough cold air from Canada to cause a changeover to snow. This is most likely to happen across the inland, higher elevation locations of upstate New York and New England and would take place in the later Monday/Tuesday time frame.
Meteorologist Paul Dorian
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