Tropical Storm Isaac Update

Sam Champion reveals potential paths the tropical storm might take.
3:00 | 08/23/12

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Transcript for Tropical Storm Isaac Update
Tropical storm Isaac is gaining strength heading towards South Florida -- even track it all overnight. And some unexpected moves from -- overnight in kind of a weakening situation here so we watch this system that is a couple hundred miles past -- Guadeloupe Martinique. Let me show the pictures of what it looked like when it passed -- -- now. Putting -- big spray of ocean also is about 47 inches of rain across silent so still and that we can strength some flooding some big wind -- -- we're not worried about it staying -- and let's show you exactly why that is here's the path of the hurricane center has lined out for this storm. Gaining a little straight before it hit. -- there's one or two places that are very important watch this storm. One of ms. right -- by the Dominican Republic and Haiti because the elevation those mountain about 101000 feet that's a stalls the Rockies and that can take a weak storm and sheared apart little bit. But the hurricane -- -- to gather strength again here in the Florida Straits passing somewhere near the keys and then curving up around that West Coast of Florida. There's Tampa that's where the Republican Convention will be all of next week so right now if you follow its current path it's a good dousing George and Nancy and they're -- the Tampa mayor saying -- ready for anything -- that convention even get there to evacuate how likely is that. You know at this point that the models have trended more west and west what we're looking for right now is to see if it continues to -- west. The real important thing is the strength of this storm if it's a one. Nearby Tampa and that's a good hitting -- brain if it's -- 23 then it's a whole different thing and a lot stronger the storm if it's farther away from Tampa certainly it's less of an impact of its closer it's a lot more so we watch it by about Florida Straits and that's over the -- And they are watching closely to -- thanks very much.

This transcript has been automatically generated and may not be 100% accurate.

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