343 WTNT21 KNHC 171444 TCMAT1 TROPICAL STORM ARTHUR FORECAST/ADVISORY NUMBER 4 NWS NATIONAL HURRICANE CENTER MIAMI FL AL012020 1500 UTC SUN MAY 17 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * SURF CITY TO DUCK NC * PAMLICO AND ALBEMARLE SOUNDS A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE NEXT 24 HOURS. TROPICAL STORM CENTER LOCATED NEAR 30.5N 77.4W AT 17/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHEAST OR 15 DEGREES AT 8 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1002 MB MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. 34 KT.......100NE 100SE 0SW 0NW. 12 FT SEAS..120NE 90SE 0SW 105NW. 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 30.5N 77.4W AT 17/1500Z AT 17/1200Z CENTER WAS LOCATED NEAR 30.3N 77.4W FORECAST VALID 18/0000Z 32.0N 76.8W MAX WIND 45 KT...GUSTS 55 KT. 34 KT...110NE 110SE 0SW 0NW. FORECAST VALID 18/1200Z 34.3N 75.5W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 40SE 0SW 0NW. 34 KT...110NE 110SE 0SW 50NW. FORECAST VALID 19/0000Z 36.4N 73.2W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 40SE 0SW 0NW. 34 KT...120NE 120SE 40SW 50NW. FORECAST VALID 19/1200Z 37.3N 70.4W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 40NE 40SE 0SW 0NW. 34 KT...150NE 120SE 70SW 90NW. FORECAST VALID 20/0000Z 37.1N 68.2W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 40NE 40SE 0SW 0NW. 34 KT...180NE 120SE 70SW 120NW. FORECAST VALID 20/1200Z 36.5N 66.5W...POST-TROP/EXTRATROP MAX WIND 45 KT...GUSTS 55 KT. 34 KT...180NE 90SE 70SW 120NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 21/1200Z 35.5N 64.5W...POST-TROP/EXTRATROP MAX WIND 35 KT...GUSTS 45 KT. OUTLOOK VALID 22/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 30.5N 77.4W INTERMEDIATE PUBLIC ADVISORY...WTNT31 KNHC/MIATCPAT1...AT 17/1800Z NEXT ADVISORY AT 17/2100Z $$ FORECASTER BROWN