Hurricane Bertha

Forecast Advisory 21

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688
WTNT22 KNHC 080830
TCMAT2
HURRICANE BERTHA FORECAST/ADVISORY NUMBER 21
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL022008
0900 UTC TUE JUL 08 2008

HURRICANE CENTER LOCATED NEAR 21.4N 53.3W AT 08/0900Z
POSITION ACCURATE WITHIN 25 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 9 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 955 MB
EYE DIAMETER 15 NM
MAX SUSTAINED WINDS 105 KT WITH GUSTS TO 130 KT.
64 KT....... 25NE 20SE 15SW 25NW.
50 KT....... 50NE 40SE 30SW 50NW.
34 KT.......100NE 60SE 40SW 100NW.
12 FT SEAS..270NE 180SE 150SW 270NW.
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 21.4N 53.3W AT 08/0900Z
AT 08/0600Z CENTER WAS LOCATED NEAR 21.1N 52.9W

FORECAST VALID 08/1800Z 22.2N 54.4W
MAX WIND 100 KT...GUSTS 120 KT.
64 KT... 25NE 20SE 15SW 25NW.
50 KT... 50NE 40SE 30SW 50NW.
34 KT...100NE 60SE 40SW 100NW.

FORECAST VALID 09/0600Z 23.4N 55.9W
MAX WIND 95 KT...GUSTS 115 KT.
64 KT... 30NE 25SE 20SW 30NW.
50 KT... 60NE 50SE 40SW 60NW.
34 KT...120NE 90SE 60SW 120NW.

FORECAST VALID 09/1800Z 24.7N 57.4W
MAX WIND 90 KT...GUSTS 110 KT.
64 KT... 30NE 25SE 20SW 30NW.
50 KT... 60NE 50SE 40SW 60NW.
34 KT...120NE 90SE 75SW 120NW.

FORECAST VALID 10/0600Z 26.0N 58.6W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 70NE 50SE 40SW 60NW.
34 KT...140NE 100SE 75SW 120NW.

FORECAST VALID 11/0600Z 28.0N 59.5W
MAX WIND 80 KT...GUSTS 100 KT.
50 KT... 70NE 50SE 40SW 60NW.
34 KT...140NE 100SE 75SW 120NW.

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 12/0600Z 30.0N 59.5W
MAX WIND 75 KT...GUSTS 90 KT.

OUTLOOK VALID 13/0600Z 32.0N 59.0W
MAX WIND 70 KT...GUSTS 85 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.4N 53.3W

NEXT ADVISORY AT 08/1500Z

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FORECASTER PASCH