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TROPICAL STORM IRWIN FORECAST/ADVISORY NUMBER  23
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP102017
0300 UTC FRI JUL 28 2017

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

TROPICAL STORM CENTER LOCATED NEAR 14.9N 124.6W AT 28/0300Z
POSITION ACCURATE WITHIN  20 NM

PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT   2 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB
MAX SUSTAINED WINDS  50 KT WITH GUSTS TO  60 KT.
50 KT....... 20NE  20SE   0SW   0NW.
34 KT....... 60NE  50SE  50SW  60NW.
12 FT SEAS.. 90NE  90SE  90SW  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 14.9N 124.6W AT 28/0300Z
AT 28/0000Z CENTER WAS LOCATED NEAR 14.9N 124.5W

FORECAST VALID 28/1200Z 14.8N 124.8W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 20NE  20SE   0SW   0NW.
34 KT... 60NE  50SE  50SW  60NW.

FORECAST VALID 29/0000Z 14.8N 125.0W
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 20NE  20SE   0SW   0NW.
34 KT... 60NE  50SE  50SW  60NW.

FORECAST VALID 29/1200Z 15.0N 125.1W
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 30NE  20SE  20SW  30NW.
34 KT... 60NE  50SE  50SW  60NW.

FORECAST VALID 30/0000Z 16.4N 124.8W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 30NE  20SE  20SW  20NW.
34 KT... 70NE  60SE  50SW  70NW.

FORECAST VALID 31/0000Z 20.0N 126.0W
MAX WIND  45 KT...GUSTS  55 KT.
34 KT... 70NE  60SE  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 01/0000Z...MERGED WITH TROPICAL STORM HILARY

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.9N 124.6W

NEXT ADVISORY AT 28/0900Z

$$
FORECASTER STEWART


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