1. Tropical Storm Isaac Briefing August 30, 2012 400 AM CDT National Weather Service Weather Forecast Office Slidell, LA August 30, 2012 400 AM CDT National Weather Service Weather Forecast Office Slidell, LA

2. Current Satellite

3. Tropical Storm Isaac

4. Watches/Warnings

5. Tropical Storm Isaac Wind Forecast

6. Wind Impacts LocationProjected end of frequent TS force gusts MS Gulf Coast and Pearl River County Lower St. Bernard/Lower Plaquemines 9 am South Shore/North Shore2 pm Baton Rouge Area Pike and Walthall Counties 2 pm Pointe Coupee & W. Feliciana Parishes Wilkinson & Amite Counties 3 pm Winds gradually decreasing from east to west beginning late this evening

7. Storm Tide Levels MS Coast: Tide levels were receding this morning and should continue to do so though reflect a positive anomaly through tonight. SE LA Coast: Tide levels will begin to recede slowly overnight. Lake Pontchartrain/Maurepas: Tides 5 to 8 feet to remain at these elevated levels before receding slowly later today. Positive anomaly tide levels will continue into the weekend. MS Coast: Tide levels were receding this morning and should continue to do so though reflect a positive anomaly through tonight. SE LA Coast: Tide levels will begin to recede slowly overnight. Lake Pontchartrain/Maurepas: Tides 5 to 8 feet to remain at these elevated levels before receding slowly later today. Positive anomaly tide levels will continue into the weekend.

8. Current Storm Tide Levels

9. Rainfall Accumulation Radar rainfall estimates show large swaths of 12 to 16 inches (red) and averages of 6 to 12 inches (yellow and orange)

10. Rainfall through Friday

11. Tornado Threat

12. Summary TROPICAL STORM WARNING remains in effect for all of SE Louisiana and SW and coastal MS until surge waters and frequent gusts subside. Affects of Isaac will diminish throughout the day. Storm tides will fall steadily through this morning on the open coast and remain elevated in Lakes Pontchartrain and Maurepas before beginning to recede slowly later today. Excessive rainfall has taken place, with additional heavy rainfall expected at times under spiral bands today. Preliminary event rainfall accumulations will be provided with the 10 am briefing package. TROPICAL STORM WARNING remains in effect for all of SE Louisiana and SW and coastal MS until surge waters and frequent gusts subside. Affects of Isaac will diminish throughout the day. Storm tides will fall steadily through this morning on the open coast and remain elevated in Lakes Pontchartrain and Maurepas before beginning to recede slowly later today. Excessive rainfall has taken place, with additional heavy rainfall expected at times under spiral bands today. Preliminary event rainfall accumulations will be provided with the 10 am briefing package.

13. Next Update Emails with updated slides will be sent following each advisory. Next conference call will be 2 PM CDT today. Emails with updated slides will be sent following each advisory. Next conference call will be 2 PM CDT today.

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