What is storm surge?
A lot of people think of it like a tsunami, when actually it's a slow rise of water over many hours. You'll start to see the water rise before the storm makes landfall Tuesday.
Is storm surge more common on the Gulf Coast?
The Gulf Coast in generally is more vulnerable to storm surge than, say, the East Coast because the coastal shelf is shallower. That broad shelf allows the storm surge to run up much greater distance and be a higher magnitude.
But storm surge is not just a line along the coast — it doesn't stop on the beach. With Katrina we saw storm surge 30 to 40 miles inland. We don't expect to see it that far inland with this storm, but you can expect some inland component.
How will the storm surge you expect to see from Isaac compare to what hit New Orleans after
We're careful about comparing this with Katrina; this is a different storm, a different event.
It doesn’t take much. We’ve seen significant storm surge with
Will the levees in New Orleans be able to handle the level of storm surge you're predicting?
We cannot predict how the levees will hold with these waters. The hurricane risk-reduction system that is in place was put there to mitigate the risk and protect people. There is no forecast of overtopping, but it's difficult to predict if the numbers will go up. It's a very slow-moving system and it could kind of stall over the coast and that could create flooding concerns.
Will New Orleans bear the brunt of the storm surge?
This is not just a New Orleans event. During Tropical Storm Debby, we saw significant storm surge in
There are areas to the east that may fall out of the [storm's] track or the cone. We don't want those residents to think they won't also see a significant storm surge hazard.