Tropical Storm Bertha Forecast Advisory #9

By: National Weather Service
By: National Weather Service

000
WTNT22 KNHC 050838
TCMAT2
TROPICAL STORM BERTHA FORECAST/ADVISORY NUMBER 9
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL022008
0900 UTC SAT JUL 05 2008

TROPICAL STORM CENTER LOCATED NEAR 16.5N 35.3W AT 05/0900Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 18 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB
MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT.
34 KT....... 75NE 30SE 0SW 75NW.
12 FT SEAS..240NE 90SE 60SW 180NW.
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 16.5N 35.3W AT 05/0900Z
AT 05/0600Z CENTER WAS LOCATED NEAR 16.3N 34.4W

FORECAST VALID 05/1800Z 17.0N 38.0W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 75NE 30SE 0SW 75NW.

FORECAST VALID 06/0600Z 17.6N 41.8W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 30NE 0SE 0SW 30NW.
34 KT... 90NE 45SE 30SW 90NW.

FORECAST VALID 06/1800Z 18.2N 45.6W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 30NE 0SE 0SW 30NW.
34 KT... 90NE 45SE 30SW 90NW.

FORECAST VALID 07/0600Z 19.0N 49.3W
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 50NE 30SE 0SW 50NW.
34 KT...100NE 60SE 30SW 100NW.

FORECAST VALID 08/0600Z 20.5N 56.0W
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 50NE 30SE 0SW 50NW.
34 KT...100NE 60SE 30SW 100NW.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 225 NM
ON DAY 4 AND 300 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY

OUTLOOK VALID 09/0600Z 22.5N 61.0W
MAX WIND 60 KT...GUSTS 75 KT.

OUTLOOK VALID 10/0600Z 24.5N 66.0W
MAX WIND 60 KT...GUSTS 75 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.5N 35.3W

NEXT ADVISORY AT 05/1500Z

$$
FORECASTER KNABB


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