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Tropical Weather Update August 31, 2011 0730 CDT

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

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Tropical Weather Update August 31, 2011 0730 CDT

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  1. Tropical Weather Update August 31, 20110730 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 • 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

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