Issued at 2100 UTC MON SEP 10 2018


642
WTNT24 KNHC 102030
TCMAT4

HURRICANE ISAAC FORECAST/ADVISORY NUMBER 13
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092018
2100 UTC MON SEP 10 2018

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

INTERESTS IN THE LESSER ANTILLES SHOULD MONITOR THE PROGRESS OF
ISAAC.

HURRICANE CENTER LOCATED NEAR 14.4N 45.0W AT 10/2100Z
POSITION ACCURATE WITHIN 20 NM

PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 12 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 993 MB
MAX SUSTAINED WINDS 65 KT WITH GUSTS TO 80 KT.
64 KT....... 10NE 0SE 0SW 10NW.
50 KT....... 20NE 10SE 10SW 20NW.
34 KT....... 40NE 20SE 20SW 40NW.
12 FT SEAS..120NE 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 14.4N 45.0W AT 10/2100Z
AT 10/1800Z CENTER WAS LOCATED NEAR 14.4N 44.4W

FORECAST VALID 11/0600Z 14.5N 47.1W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 10NE 0SE 0SW 10NW.
50 KT... 20NE 10SE 10SW 20NW.
34 KT... 50NE 20SE 20SW 50NW.

FORECAST VALID 11/1800Z 14.6N 49.8W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 10NE 10SE 10SW 10NW.
50 KT... 30NE 20SE 20SW 20NW.
34 KT... 50NE 30SE 30SW 50NW.

FORECAST VALID 12/0600Z 14.6N 52.3W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 15NE 10SE 10SW 10NW.
50 KT... 30NE 20SE 20SW 20NW.
34 KT... 70NE 40SE 40SW 70NW.

FORECAST VALID 12/1800Z 14.8N 54.7W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 20NE 10SE 10SW 15NW.
50 KT... 40NE 20SE 20SW 30NW.
34 KT... 80NE 40SE 40SW 70NW.

FORECAST VALID 13/1800Z 15.3N 60.2W
MAX WIND 70 KT...GUSTS 85 KT.
50 KT... 40NE 20SE 20SW 30NW.
34 KT... 80NE 50SE 40SW 80NW.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY

OUTLOOK VALID 14/1800Z 15.5N 65.5W
MAX WIND 60 KT...GUSTS 75 KT.

OUTLOOK VALID 15/1800Z 15.5N 70.5W
MAX WIND 50 KT...GUSTS 60 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.4N 45.0W

NEXT ADVISORY AT 11/0300Z

$$
FORECASTER PASCH





Source: Hurricane Isaac Forecast Advisory Number 13


David Cottle

UBB Owner & Administrator