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TROPICAL STORM NORMA FORECAST/ADVISORY NUMBER  12
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP172017
0900 UTC SUN SEP 17 2017
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
NONE.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT... 
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* LOS BARRILES TO TODOS SANTOS
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* NORTH OF TODOS SANTOS TO CABO SAN LAZARO
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA... IN THIS CASE WITHIN 24
HOURS.
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA... IN THIS CASE WITHIN 36 HOURS.
 
TROPICAL STORM CENTER LOCATED NEAR 20.5N 110.4W AT 17/0900Z
POSITION ACCURATE WITHIN  15 NM
 
PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 345 DEGREES AT   4 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  999 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT....... 80NE  60SE  60SW  70NW.
12 FT SEAS..120NE  90SE  90SW 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 20.5N 110.4W AT 17/0900Z
AT 17/0600Z CENTER WAS LOCATED NEAR 20.3N 110.3W
 
FORECAST VALID 17/1800Z 21.1N 110.7W
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 80NE  60SE  60SW  70NW.
 
FORECAST VALID 18/0600Z 21.7N 111.3W
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 70NE  60SE  60SW  60NW.
 
FORECAST VALID 18/1800Z 22.1N 112.1W
MAX WIND  35 KT...GUSTS  45 KT.
34 KT... 60NE  60SE  60SW  60NW.
 
FORECAST VALID 19/0600Z 22.4N 113.0W
MAX WIND  35 KT...GUSTS  45 KT.
34 KT... 50NE  50SE  50SW  50NW.
 
FORECAST VALID 20/0600Z 22.9N 114.3W
MAX WIND  30 KT...GUSTS  40 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 21/0600Z 23.5N 114.5W...POST-TROP/REMNT LOW
MAX WIND  25 KT...GUSTS  35 KT.
 
OUTLOOK VALID 22/0600Z 24.0N 114.0W...POST-TROP/REMNT LOW
MAX WIND  25 KT...GUSTS  35 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.5N 110.4W
 
NEXT ADVISORY AT 17/1500Z
 
$$
FORECASTER ZELINSKY
 
 
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