Posted: Aug 28, 2012 7:54 AM by Meteorologist Dave Nussbaum
Updated: Aug 28, 2012 7:54 AM
Source: WBRZ Weather Center
Isaac Morning Update: Isaac is still not a hurricane yet, but the NHC says that it is on the verge of becoming one! Winds are 70 mph and the pressure is down to 976 mb. The storm is getting stronger and the storms are wrapping around the center. The drier air that was being ingested into the center of the storm is not happening anymore, and that is one reason why it will get stronger. The other reasons are the warm Gulf Waters and the slow movement. Once it becomes a hurricane, it will continue to strengthen through landfall. A Hurricane Warning from East of Morgan City, LA east to Destin, FL. A Tropical Storm Warning for Inland Parishes/Counties Around Baton Rouge.
Isaac is moving to the northwest at 7 mph and this track is expected to continue through landfall tonight over Plaquemines Parish, near Grand Isle, LA between 11 PM and 1 AM Wednesday. It will continue to the northwest toward Baton Rouge on Wednesday Afternoon with tropical storm conditions over the Capital City beginning tonight. Then it will go toward Natchez, MS by Early Thursday Morning, and track into Arkansas by Friday.
What can we expect in Baton Rouge: The weather this morning will be mostly cloudy with some showers and a little breeze. This afternoon will have more showers moving into the city and the winds will get stronger. Things will really start to go down hill tonight as Isaac makes landfall. Since it will be a slow-moving storm over SE LA, we will see a very long period of tropical storm force winds around 40-60 mph with higher gusts on Wednesday, very heavy rain totaling 6-12 inches with flash flooding likely, and the NWS has issued a Flash Flood Watch for all of Southeast Louisiana through Wednesday. We could also see a few tornadoes. Lastly, power outages can be expected all across the Baton Rouge area, so please be prepared for that.
Coast Impacts: A storm surge of 6 to 12 FEET will be possible from the MS Coast to SE LA Coast including in the Lakes. Hurricane force winds of 75-85 mph and greater tonight into early Wednesday, then tropical storm winds Wednesday Afternoon/Night. Heavy rain around 10 to 20 inches will be possible! Power outages are also likely.