Salient information from the NHC at their Midnight Position Report:
"A STORM SURGE OF 11.0 FEET WAS RECENTLY REPORTED AT A NATIONAL
OCEAN SERVICE TIDE GAUGE AT SHELL BEACH LOUISIANA. A STORM SURGE
OF 6.9 FEET WAS OBSERVED AT A NATIONAL OCEAN SERVICE TIDE GAUGE IN
WAVELAND MISSISSIPPI. "
image below from this site, shows how different Isaac looked after 24 hours righting himself and becoming a Hurricane:
Excellent example of how things can change so fast with tropical systems.
My concerns currently concern the Water Vapor Loop. (Yes I know that was redundant)
Isaac is having problems moving NORTHwest because he is it seems... being blocked from movement in that direction as illustrated here by this loop:
Which could mean...and hopefully it does not happen... that Isaac just stalls out, loops about and continues to dump rain across the Gulf Coast for a day or two until something changes. Some models did predict this or something like it happening.
Anyway, that does worry me.
Currently he is sitting offshore... dumping rain. Good for New Orleans, not as good for cities to their west.
At some point upwelling will occur which means basically cooler air moves up into an area previously very hot... from the storm sitting over it for so long. Then the storm stops intensifying... to be as simple as possible explanation wise..
Either way he is looping out in the Gulf and it's too soon to say when he will stop looping and meandering and when he will start significant movement.
For now going to bed, saying prayers for everyone in his path and I mean everyone..especially those in Grand Isle who are cut off and taking the brunt of the storm right now. And, if he is looping...that may continue for some time.
Awesome link my son sent me... http://hint.fm/wind/
So far he's been right... Isaac did just what he said it would days ago... last Wednesday. Nice to know I raised him well :) Incredible loop.
I'll be back in the morning and where ever Isaac goes, when ever he goes... I'll be here covering it.
Sweet Tropical Dreams