Tuesday, November 10, 2009

Ida's Center Nearly Onshore


Tropical Storm Ida continued to weaken overnight, and also slowed its approach to the Gulf Coast. However, the "body" of the storm's cloud-cover and rain is completely covering the Southeast this morning. Moisture from Ida will continue to overspread the region and head toward the Commonwealth this afternoon and evening, with a good chance for rain overnight and through Wednesday. Ida's remnants will be absorbed in an approaching mid- to upper-level trough now moving into the Eastern U.S., and while that trough swings through the region over the next couple of days, we will have an opportunity for rain in Virginia and through the Carolinas. The associated cold front will move south of the area Wednesday, with surface high pressure moving into the region and bringing cooler air. While Ida's remnants interact with this front, rainfall potential will linger into Thursday in Virginia, but the highest rain totals will likely be along and south of the boundary in the Carolinas.

Monday, November 9, 2009

Ida Downgraded To Tropical Storm


Ida has been downgraded to a Tropical Storm at 10 a.m. Monday, with maximum sustained winds of 70mph. Wind shear has been efficiently eroding the circulation this morning, and further weakening is expected until Ida makes landfall overnight tonight.

Update: Ida Weakens Further


The latest data on Hurricane Ida shows the storm has continued to weaken early Monday morning, now down to maximum sustained winds at 80mph. Movement is still to the NNW at 16mph. Ida should make landfall near the Alabama/Florida border on the Gulf Coast shortly after midnight tonight into early Tuesday morning.
Ida will cause a storm surge of 3-6 feet along the eastern Gulf Coast. The areas highlighted in green below have a chance of at least a 3 ft storm surge.


In addition, Ida and its remnants will bring several inches of rainfall to the Southeast through Thursday morning. Here is the projected rainfall accumulation: