Isaac, now fully onshore, has continued its trend of wobbling the past few hours. Isaac has turned a bit more north-northwest than northwest, and latest radar is indicating Isaac may be making a more due north or even slight northeasterly turn. A northerly or northeasterly turn will spread more rain across our areas and also have longer effects with the rain.
The heaviest rain has been along the Mississippi and Louisiana coasts, where several inches have already fallen and flooding is a major concern. Some levees southeast of New Orleans have overflowed, but there are no major reports of flooding from the city at this time. Portions of the Mississippi Gulf Coast are impassible as water continues to rise in Waveland and Biloxi.
Now locally, rain has been spreading northward since about 9am this morning. Jones and Wayne county have seen rain almost all day, with locations along the Mississippi Highway 18 and Alabama Highway 10 corridors just now entering the rain. If the pattern continues, I-20 should expect to start seeing rain by the 1pm hour.
The rain is not falling too hard this far away from the center, but if we enter into a rainband, this will allow for stronger winds than we have seen so far today, and also may allow a thunderstorm or two to form.
Storms to our south have been tornado warned this morning, with Forrest county the closest to us as to actually go under a warning. We have warmed more than locations to our south thanks to the delay in warming, and if Isaac starts creeping a little more to the north, our winds will turn more southeasterly, which is much more conducive for tornadic development. Our threat for tornadoes is still low, but something to watch out for if Isaac starts moving more northerly and if storms are able to develop over us.
We are carefully watching Isaac in the weather center as Isaac has been very unpredictable to this point. Most of the rain is falling on the eastern side of the storm, so the track at this point will determine how much rain we see and how far north the rain gets. We will have updates on our webchannel regularly and live on WTOK should the need arise.