I thought I'd start a new post on what is currently Tropical Storm Isaac. The latest 5pm data shows the following:
SUMMARY OF 500 PM AST...2100 UTC...
ABOUT 25 MI...40 KM SSE OF GUADELOUPE
ABOUT 365 MI...585 KM ESE OF SAN JUAN PUERTO RICO
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 22 MPH...35 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES
While there is a large amount of uncertainty in Isaac's path, especially this far out, Isaac is something that everyone in the southeast needs to be watching closely. Right now the computer models show Isaac moving toward the Gulf of Mexico in about 96 hours. Depending on the exact path that Isaac follows, it may already be a hurricane by the time it gets there. People in Florida and all along the Gulf Coast area need to pay special attention as Isaac gets closer.
Today Isaac has had a difficult time gaining strength due to dry air being drawn in to the system at mid levels of the atmosphere. Some believe that this advection of dry air will end by morning if it hasn't already. Either way, Isaac is forecast to be a hurricane within 48 hours, taking a path almost directly over Jamaica. If it stays to the south of the big islands, and the mountains on Haiti in particular, Isaac could gain strength over the very warm Caribbean waters, which are 86 to 89 degrees.
I have a web page just for Isaac that has everything you might need to know about Isaac with the most up to date information possible. On that page are links to other tropical weather information pages for the entire tropical Atlantic basin. Take a few minutes to explore all of the tropical maps, charts, discussions, and the latest satellite images.
While Isaac won't affect us (if at all) until Monday, there is a very real possibility that Isaac could follow a path that may potentially bring us the tropical moisture that we need to break the drought.
I'll be making periodic updates as Isaac progresses, please check back for more information.
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