Friday, September 5, 2008

11 PM Hanna Update

As of 11 PM, Hanna continues as a strong tropical storm with maximum sustained winds of 70 mph. Landfall should occur around 2 AM just north of Charleston, SC. I expect the greatest impact from wind and rain in central Virginia to occur between 11 AM and 4 PM.

Zach

Forecasted Rain Totals

Here is a map of projected rain totals from Hanna. The shades of red and bright orange indicate the potential of 3 to 6". Isolated areas within this area could easily exceed 10", just like what we saw with the remnants of Fay last week. Notice how the heavy rain extends all the way up the east coast through New England!

-Aaron-


5 PM Update on Hanna

The latest advisory from the National Hurricane Center shows very little change in Hanna over the past 3 hours. Movement of the storm continues to be to the north at 20 mph, with maximum sustained winds of 70 mph. It is still possible that Hanna could become a hurricane (winds 74+) before making landfall near the NC/SC border early Saturday morning. Moderate rainfall will continue in Richmond and adjacent counties through 6:30 PM as an initial rain band moves through the area. Expect rain totals in the range of .25 in. to .50 in. from this first wave of rain.

Zach

Hanna Slightly Stronger...Nearing Hurricane Strength

The latest advisory from the National Hurricane Center indicates that Hanna now has max winds of 70 mph, and is moving north at 20 mph. The initial rain bands on the north side of Hanna are beginning to move into central Virginia. Expect rain to begin in Richmond at approximately 4:30 PM. A flash flood watch has been issued for all of central Virginia, in the anticipation 3-6 inches of rain.

Zach

11 AM Update: Hanna Accelerating to the NW

The 11 AM update from the National Hurricane Center shows that Hanna continues as a strong tropical storm with max winds of 65 mph.  The speed of the storm has increased to 20 mph, and continues in a northwesterly direction.  Although the westerlies will eventually steer Hanna to the north and eventually to the northeast, I think the momentum of the storm will result in a landfall a little farther south than in previous forecasts.  Hanna should move onshore just north of Charleston, SC at 4 AM Saturday.  A gradual turn to the north and northeast will bring the storm over Raleigh and then Richmond.  The center of Hanna should be over the Northern Neck at 8 PM Saturday evening.  I'll have another update as soon as new data arrives at 2 PM today.

Zach

Tropical Storm Hanna

Tropical Storm Hanna is producing rain showers in portions on Florida. Some of the rain bands are already making it to the coastal portions of the Carolina's. Hanna will gradually increase its forward speed and is expected to make landfall near the North & South Carolina border early Saturday morning.

A tropical storm warning is now in effect along the Virginia coastline. Expect rain showers to arrive late this afternoon and evening along with the possibility of a few thunderstorms. Hanna will produce periods of heavy rainfall and gusty winds. Keep in mind there is still a possibility that Hanna could restrengthen into a weak hurricane.

Jennifer