Tropical Storm GREG
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TROPICAL STORM GREG FORECAST/ADVISORY NUMBER 4
NWS NATIONAL HURRICANE CENTER MIAMI FL EP072011
1500 UTC WED AUG 17 2011
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
INTERESTS ALONG THE SOUTHERN AND SOUTHWESTERN COASTS OF MEXICO
SHOULD MONITOR THE PROGRESS OF GREG.
TROPICAL STORM CENTER LOCATED NEAR 16.7N 104.2W AT 17/1500Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 18 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB
MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT.
34 KT....... 50NE 0SE 0SW 40NW.
12 FT SEAS.. 50NE 0SE 0SW 40NW.
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 16.7N 104.2W AT 17/1500Z
AT 17/1200Z CENTER WAS LOCATED NEAR 16.4N 103.4W
FORECAST VALID 18/0000Z 17.7N 106.6W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 35NE 25SE 0SW 35NW.
34 KT... 75NE 60SE 45SW 75NW.
FORECAST VALID 18/1200Z 18.4N 109.4W
MAX WIND 65 KT...GUSTS 80 KT.
64 KT... 20NE 0SE 0SW 20NW.
50 KT... 45NE 35SE 20SW 45NW.
34 KT... 90NE 75SE 60SW 90NW.
FORECAST VALID 19/0000Z 19.0N 111.8W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 35NE 30SE 30SW 35NW.
50 KT... 60NE 45SE 40SW 60NW.
34 KT...110NE 90SE 75SW 110NW.
FORECAST VALID 19/1200Z 19.4N 113.6W
MAX WIND 75 KT...GUSTS 90 KT.
50 KT... 60NE 45SE 40SW 60NW.
34 KT...110NE 90SE 75SW 110NW.
FORECAST VALID 20/1200Z 20.0N 116.5W
MAX WIND 65 KT...GUSTS 80 KT.
50 KT... 50NE 40SE 35SW 50NW.
34 KT...110NE 90SE 75SW 110NW.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
OUTLOOK VALID 21/1200Z 20.5N 119.0W
MAX WIND 45 KT...GUSTS 55 KT.
OUTLOOK VALID 22/1200Z 20.5N 122.0W
MAX WIND 30 KT...GUSTS 40 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.7N 104.2W
NEXT ADVISORY AT 17/2100Z
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FORECASTER BEVEN
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