1. Tropical Weather Update August 31, 2011 0730 CDT National Weather Service Weather Forecast Office Slidell, LA

2. Overview Tropical wave currently located over the northwestern Caribbean may develop further as it moves through the central and western/northwestern Gulf late this week/over the weekend Tropical wave currently located over the northwestern Caribbean may develop further as it moves through the central and western/northwestern Gulf late this week/over the weekend Main local threats: Main local threats:  Heavy rainfall  Higher than normal tides  Strong winds over the coastal waters

3. Tropical Weather Outlook

4. Satellite Image 615am

5. 5 Day Rainfall Forecast (through Sunday morning)

6. Other Threats - Wind  Marine Areas:  Sustained winds increasing over the next couple days  Expect winds 15-20 knots by Friday with 20-25 knots over the weekend (higher gusts)  Small Craft Advisories likely  Land Areas:  Gusts 25 to 35 mph in squalls and thunderstorms

7. Other Threats - Tides  A prolonged period of moderate to strong easterly or southeasterly winds will lead to elevated tide levels by Friday and through the weekend  Tides may rise up to 1 to 2 feet above astronomical over the weekend (could be higher depending on how strong the winds are)

8. Summary  There is still much uncertainty concerning the development, eventual track, and intensity of this system. Future forecasts will continue to refine the details.  Main local threats for the northern Gulf coast will be:  heavy rainfall  higher than normal tides  strong winds over the coastal waters

9. NWS New Orleans Baton Rouge www.weather.gov/lix http://www.srh.noaa.gov/lix?n=embrief2 *Tropical Briefing Section Facebook http://www.facebook.com/US.NationalWeatherService. NewOrleans.gov http://www.facebook.com/US.NationalWeatherService. NewOrleans.gov