Hanna on the move, a little stronger

By Josh Marthers
Meteorologist
Published: September 3, 2008

There remains a high amount of uncertainty regarding the exact track of Tropical Storm Hanna but the general motion of Hanna is more clear this evening.  We expect a motion to the northwest with an accelaration in forward speed as we head through the overnight and into tomorrow.  Based off of the latest thinking, Hanna will likely make landfall along the northern South Carolina coast or in eastern North Carolina Friday night or Saturday morning.  At this point, strengthening is expected and Hanna will likely become a hurricane by Thursday morning.

Hanna has gained some strength with maximum sustained winds near 65 mph.  The exact strength at landfall is an even more difficult forecast as Hanna’s inner-core has been greatly disrupted by an all out assault of strong wind shear.  The shear will continue to diminish and based off of the water temperature profile Hanna is expected to strengthen.  The rate of strengthening is in question due to the possibility of dry air intrusion and the known disruption of the inner core.  Based off of the latest thinking, Hanna will likely be no stronger than a category two hurricane on the Saffir-Simpson scale.

It is important to note that there is still uncertainty regarding Hanna’s exact track and strength.  Please continue to monitor the latest forecasts and be prepared to take action if watches and warnings are issued.