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#538692 (Received by flhurricane at: 10:54 AM 30.Aug.2012) TCMAT4 TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER 38 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012 1500 UTC THU AUG 30 2012 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED WEST OF MORGAN CITY LOUISIANA. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * MORGAN CITY LOUISIANA TO THE MISSISSIPPI-ALABAMA BORDER... INCLUDING LAKE PONTCHARTRAIN AND LAKE MAUREPAS TROPICAL STORM CENTER LOCATED NEAR 31.7N 92.1W AT 30/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 330 DEGREES AT 8 KT ESTIMATED MINIMUM CENTRAL PRESSURE 987 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 50 KT. 34 KT....... 60NE 170SE 140SW 0NW. 12 FT SEAS.. 0NE 180SE 0SW 0NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 31.7N 92.1W AT 30/1500Z AT 30/1200Z CENTER WAS LOCATED NEAR 31.3N 91.9W FORECAST VALID 31/0000Z 33.0N 92.8W...INLAND MAX WIND 30 KT...GUSTS 45 KT. FORECAST VALID 31/1200Z 35.0N 93.3W...INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 01/0000Z 37.0N 93.3W...INLAND MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 01/1200Z 38.4N 92.3W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 02/1200Z 39.4N 89.2W...POST-TROP/REMNT LOW MAX WIND 15 KT...GUSTS 25 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 175 NM ON DAY 4 AND 225 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY OUTLOOK VALID 03/1200Z 39.5N 86.0W...POST-TROP/REMNT LOW MAX WIND 15 KT...GUSTS 25 KT. OUTLOOK VALID 04/1200Z 39.5N 83.0W...POST-TROP/REMNT LOW MAX WIND 15 KT...GUSTS 25 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 31.7N 92.1W NEXT ADVISORY AT 30/2100Z $$ FORECASTER STEWART |