WTNT24 KWNH 281441 TCMAT4 POST-TROPICAL CYCLONE HELENE FORECAST/ADVISORY NUMBER 21 NWS WEATHER PREDICTION CENTER COLLEGE PARK MD AL092024 1500 UTC SAT SEP 28 2024 POST-TROPICAL CYCLONE CENTER LOCATED NEAR 36.6N 87.4W AT 28/1500Z POSITION ACCURATE WITHIN 10 NM PRESENT MOVEMENT TOWARD THE EAST OR 90 DEGREES AT 3 KT ESTIMATED MINIMUM CENTRAL PRESSURE 998 MB MAX SUSTAINED WINDS 15 KT WITH GUSTS TO 20 KT. 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 36.6N 87.4W AT 28/1500Z AT 28/1200Z CENTER WAS LOCATED NEAR 36.6N 87.6W FORECAST VALID 29/0000Z 36.5N 87.0W...POST-TROP/EXTRATROP MAX WIND 15 KT...GUSTS 20 KT. FORECAST VALID 29/1200Z 36.3N 86.5W...POST-TROP/EXTRATROP MAX WIND 15 KT...GUSTS 20 KT. FORECAST VALID 30/0000Z 36.1N 86.0W...POST-TROP/EXTRATROP MAX WIND 15 KT...GUSTS 20 KT. FORECAST VALID 01/0000Z...DISSIPATED THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE WEATHER PREDICTION CENTER ON THIS SYSTEM $$ FORECASTER GALLINA