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TROPICAL STORM IRWIN FORECAST/ADVISORY NUMBER 20
NWS NATIONAL HURRICANE CENTER MIAMI FL EP102017
0900 UTC THU JUL 27 2017
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
TROPICAL STORM CENTER LOCATED NEAR 14.7N 123.8W AT 27/0900Z
POSITION ACCURATE WITHIN 20 NM
PRESENT MOVEMENT TOWARD THE WEST-SOUTHWEST OR 255 DEGREES AT 5 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 997 MB
MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT.
50 KT....... 0NE 0SE 0SW 20NW.
34 KT....... 70NE 50SE 50SW 70NW.
12 FT SEAS.. 90NE 60SE 60SW 90NW.
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 14.7N 123.8W AT 27/0900Z
AT 27/0600Z CENTER WAS LOCATED NEAR 14.8N 123.6W
FORECAST VALID 27/1800Z 14.6N 124.4W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 0NE 0SE 0SW 20NW.
34 KT... 70NE 50SE 50SW 70NW.
FORECAST VALID 28/0600Z 14.5N 124.8W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 30NE 20SE 20SW 30NW.
34 KT... 80NE 60SE 60SW 80NW.
FORECAST VALID 28/1800Z 14.3N 124.7W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 30NE 20SE 20SW 30NW.
34 KT... 80NE 60SE 60SW 80NW.
FORECAST VALID 29/0600Z 14.7N 124.3W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 30NE 20SE 20SW 30NW.
34 KT... 80NE 60SE 60SW 80NW.
FORECAST VALID 30/0600Z 17.8N 124.4W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 20NE 10SE 10SW 20NW.
34 KT... 70NE 50SE 50SW 70NW.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM
ON DAY 4 AND 150 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
OUTLOOK VALID 31/0600Z 22.0N 128.0W
MAX WIND 40 KT...GUSTS 50 KT.
OUTLOOK VALID 01/0600Z 24.5N 133.5W
MAX WIND 35 KT...GUSTS 45 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.7N 123.8W
NEXT ADVISORY AT 27/1500Z
$$
FORECASTER ROBERTS
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