Tropical Storm Irwin

Forecast Advisory 7

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000
WTPZ24 KNHC 270840
TCMEP4
TROPICAL STORM IRWIN FORECAST/ADVISORY NUMBER 7
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP092005
0900Z SAT AUG 27 2005

TROPICAL STORM CENTER LOCATED NEAR 17.5N 111.9W AT 27/0900Z
POSITION ACCURATE WITHIN 45 NM

PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 10 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT.
34 KT....... 40NE 40SE 60SW 40NW.
12 FT SEAS.. 60NE 60SE 60SW 60NW.
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 17.5N 111.9W AT 27/0900Z
AT 27/0600Z CENTER WAS LOCATED NEAR 17.5N 111.4W

FORECAST VALID 27/1800Z 17.5N 113.3W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 40NE 40SE 60SW 40NW.

FORECAST VALID 28/0600Z 17.5N 115.2W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 40NE 40SE 60SW 40NW.

FORECAST VALID 28/1800Z 17.5N 116.8W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 40NE 40SE 60SW 40NW.

FORECAST VALID 29/0600Z 17.5N 118.5W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 40NE 40SE 60SW 40NW.

FORECAST VALID 30/0600Z 17.5N 122.0W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 40SE 60SW 40NW.

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 31/0600Z 17.5N 125.5W...DISSIPATING
MAX WIND 25 KT...GUSTS 35 KT.

OUTLOOK VALID 01/0600Z 17.5N 129.0W...REMNANT LOW
MAX WIND 20 KT...GUSTS 25 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.5N 111.9W

NEXT ADVISORY AT 27/1500Z

FORECASTER ROBERTS/KNABB


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