Geez, how unlucky can we get? First we had the clouds & moisture from Hanna and now we have a slow moving complex upper disturbance that keeps us gloomy and feeling S.A.D. (Seasonal Affective Disorder due to lack of sunlight). You can see the remains of Hurricane Hanna are far removed back over Mexico with this linger blob of clouds along the northern Gulf coast.
The complex pattern over us finds a mid level (850 mb-5,000 FT) rotation north of Baton Rouge while the Water Vapor loop finds the higher (500mb-18,000 ft) upper low south of Houston. This keeps us on the "wet side" of this disturbance bring in wave after wave of heavy downpours from the Gulf. Look west of the upper low and you see fewer clouds and showers over Texas.
That's easier to see on the radar presentation with the rain shield over us keeping temps mainly in the 70s.
There is no such reflection on the surface weather map as most of the eastern half of the nation remains locked in typical summer heat & humidity. Note how far north the 70+ dew points go. It feels like NOLA in Chicago Detroit D.C., NYC & Boston. Fortunately for them, a cool front will bring some relief tomorrow & Wednesday. We have at least another day of above normal clouds and showers tomorrow before a drier pattern sets in for later this week.
Finally over the Tropical Atlantic, there is a large broad area of low pressure that NHC has decreased chances for development from 90% to 80%. They still believe this will be our next named storm (Isaias). IF it remains weak (as the Euro believes), it will likely track to the south of the Islands with the POTENTIAL of reaching the Gulf NEXT week.
However, IF it gets stronger as most models indicate, then it's likely to recurve away from the U.S. As I mentioned yesterday, we have a long time to watch it and it's way too soon to be nervous about something that probably will not be our problem. We need to get rid of our rainy pattern first! Stay tuned!
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