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TROPICAL STORM NORMA FORECAST/ADVISORY NUMBER  17
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP172017
1500 UTC MON SEP 18 2017

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

TROPICAL STORM CENTER LOCATED NEAR 21.4N 112.1W AT 18/1500Z
POSITION ACCURATE WITHIN  15 NM

PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT   4 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT....... 60NE  50SE  60SW  60NW.
12 FT SEAS..120NE  60SE  60SW 120NW.
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 21.4N 112.1W AT 18/1500Z
AT 18/1200Z CENTER WAS LOCATED NEAR 21.4N 111.9W

FORECAST VALID 19/0000Z 21.5N 113.1W
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 50NE  40SE  50SW  50NW.

FORECAST VALID 19/1200Z 21.7N 114.1W
MAX WIND  35 KT...GUSTS  45 KT.
34 KT... 40NE  30SE   0SW  30NW.

FORECAST VALID 20/0000Z 22.1N 115.0W
MAX WIND  30 KT...GUSTS  40 KT.

FORECAST VALID 20/1200Z 22.8N 115.8W...POST-TROP/REMNT LOW
MAX WIND  30 KT...GUSTS  40 KT.

FORECAST VALID 21/1200Z 24.5N 116.0W...POST-TROP/REMNT LOW
MAX WIND  20 KT...GUSTS  30 KT.

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 22/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.4N 112.1W

NEXT ADVISORY AT 18/2100Z

$$
FORECASTER ZELINSKY


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