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971 WTNT21 KNHC 310231 TCMAT1 TROPICAL STORM IRMA FORECAST/ADVISORY NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 0300 UTC THU AUG 31 2017 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 16.4N 32.2W AT 31/0300Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 999 MB MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT. 50 KT....... 20NE 20SE 0SW 0NW. 34 KT....... 50NE 40SE 30SW 40NW. 12 FT SEAS.. 45NE 30SE 0SW 60NW. 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 16.4N 32.2W AT 31/0300Z AT 31/0000Z CENTER WAS LOCATED NEAR 16.3N 31.8W FORECAST VALID 31/1200Z 16.8N 33.6W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 15NE 0SE 0SW 0NW. 50 KT... 30NE 30SE 20SW 30NW. 34 KT... 70NE 60SE 40SW 60NW. FORECAST VALID 01/0000Z 17.3N 35.5W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 20NE 20SE 10SW 20NW. 50 KT... 40NE 40SE 30SW 40NW. 34 KT... 90NE 80SE 60SW 80NW. FORECAST VALID 01/1200Z 17.7N 37.3W MAX WIND 85 KT...GUSTS 105 KT. 64 KT... 30NE 20SE 10SW 20NW. 50 KT... 50NE 40SE 30SW 40NW. 34 KT...100NE 90SE 60SW 90NW. FORECAST VALID 02/0000Z 18.0N 39.5W MAX WIND 90 KT...GUSTS 110 KT. 50 KT... 60NE 50SE 30SW 50NW. 34 KT...110NE 90SE 60SW 100NW. FORECAST VALID 03/0000Z 17.6N 44.3W MAX WIND 95 KT...GUSTS 115 KT. 50 KT... 60NE 50SE 30SW 50NW. 34 KT...120NE 100SE 60SW 100NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 04/0000Z 16.8N 49.0W MAX WIND 100 KT...GUSTS 120 KT. OUTLOOK VALID 05/0000Z 16.2N 53.5W MAX WIND 105 KT...GUSTS 130 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.4N 32.2W NEXT ADVISORY AT 31/0900Z $$ FORECASTER BROWNReturn to the Tropical Systems Page for IRMA Back to main Tropical Weather page
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