Hurricane Igor

Forecast Advisory 12

---

000
WTNT21 KNHC 110834
TCMAT1
TROPICAL STORM IGOR FORECAST/ADVISORY NUMBER 12
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL112010
0900 UTC SAT SEP 11 2010

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

TROPICAL STORM CENTER LOCATED NEAR 17.1N 37.8W AT 11/0900Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 18 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 995 MB
MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT.
50 KT....... 20NE 20SE 0SW 20NW.
34 KT....... 50NE 50SE 30SW 50NW.
12 FT SEAS..100NE 50SE 50SW 100NW.
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 17.1N 37.8W AT 11/0900Z
AT 11/0600Z CENTER WAS LOCATED NEAR 17.0N 37.0W

FORECAST VALID 11/1800Z 17.1N 40.2W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 20NE 20SE 0SW 20NW.
50 KT... 30NE 30SE 15SW 30NW.
34 KT... 75NE 75SE 50SW 75NW.

FORECAST VALID 12/0600Z 17.2N 43.1W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 25NE 25SE 0SW 25NW.
50 KT... 50NE 50SE 25SW 50NW.
34 KT...100NE 100SE 75SW 100NW.

FORECAST VALID 12/1800Z 17.4N 46.0W
MAX WIND 80 KT...GUSTS 100 KT.
64 KT... 25NE 25SE 0SW 20NW.
50 KT... 50NE 50SE 25SW 50NW.
34 KT...100NE 100SE 75SW 100NW.

FORECAST VALID 13/0600Z 17.5N 48.5W
MAX WIND 90 KT...GUSTS 110 KT.
50 KT... 50NE 50SE 25SW 50NW.
34 KT...100NE 100SE 75SW 100NW.

FORECAST VALID 14/0600Z 17.5N 52.5W
MAX WIND 100 KT...GUSTS 120 KT.
50 KT... 50NE 50SE 25SW 50NW.
34 KT...120NE 100SE 75SW 120NW.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 200 NM
ON DAY 4 AND 250 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY

OUTLOOK VALID 15/0600Z 18.5N 55.5W
MAX WIND 100 KT...GUSTS 120 KT.

OUTLOOK VALID 16/0600Z 20.5N 59.0W
MAX WIND 100 KT...GUSTS 120 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.1N 37.8W

NEXT ADVISORY AT 11/1500Z

$$
FORECASTER AVILA