Just a quick update on how the forecast is unfolding today. The boundary to our north was a little hard to find in the noon data since it is somewhat diffuse. It appears to be lying east to west across Tennessee which coincides with a moisture convergence area stretching from Northeast Texas through East Tennessee to Virginia. This is where most maps show the front.
There is also an interesting wind shift with wind generally from the east across Kentucky or on the north side of the boundary while the wind here is generally out of the west.
Radar just afternoon did show scattered showers – mostly small at this writing – developing along the southern Tennessee border. A surface low was located near the Dallas-Fort Worth area with a sizable rain shield over a large portion of the western half of Louisiana. The rain area was under a small cool core upper low about half way between Shreveport and New Orleans.
Precipitable water range from about 1.8 inches over East Alabama to about 2.2 inches over West Central Alabama. Heavier rains will be possible in storms that develop in the areas with the higher precipitable water values.
So, lots of explanation for what is slowly developing today. This boundary and the weakness aloft will be the focus for rain and thunderstorm development over the next several days and hopefully everyone gets a good soaking when it is all said and done.
Category: Alabama's Weather