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Tropical Storm HANNA


ZCZC MIATCDAT3 ALL
TTAA00 KNHC DDHHMM
TROPICAL STORM HANNA DISCUSSION NUMBER  42
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL082008
500 AM EDT SUN SEP 07 2008
 
THE CLOUD PATTERN ASSOCIATED WITH HANNA IS SPREADING OUT WELL AHEAD
OF THE SURFACE CENTER...WITH THE CLOSEST DEEP CONVECTION NOW
DISPLACED ABOUT 125 NMI TO THE NORTH AND NORTHEAST.  THE
CIRCULATION IS ALSO CLOSE TO...BUT NOT QUITE ENTANGLED WITH...A
FRONTAL BOUNDARY.  BASED ON THE LOSS OF CONVECTION NEAR THE
CORE...HANNA IS NO LONGER CONSIDERED TO BE A TROPICAL CYCLONE AND
THIS WILL BE THE LAST ADVISORY.

MAXIMUM WINDS ARE ESTIMATED TO BE 45 KT BASED ON SHIP REPORTS...AND
HANNA IS EXPECTED TO REMAIN A VIGOROUS EXTRATROPICAL CYCLONE DURING
ITS PASSAGE OVER THE NORTH ATLANTIC.  THE OFFICIAL FORECAST IS IN
GOOD AGREEMENT WITH THE GFS.
 
FUTURE INFORMATION ON THIS SYSTEM CAN BE FOUND IN HIGH SEAS
FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE OCEAN PREDICTION
CENTER...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.

 
FORECAST POSITIONS AND MAX WINDS
 
INITIAL      07/0900Z 42.6N  70.0W    45 KT...EXTRATROPICAL
 12HR VT     07/1800Z 45.4N  64.5W    45 KT...EXTRATROPICAL
 24HR VT     08/0600Z 48.4N  57.1W    45 KT...EXTRATROPICAL
 36HR VT     08/1800Z 50.0N  50.0W    45 KT...EXTRATROPICAL
 48HR VT     09/0600Z 51.0N  43.0W    45 KT...EXTRATROPICAL
 72HR VT     10/0600Z 53.5N  27.0W    45 KT...EXTRATROPICAL
 96HR VT     11/0600Z 58.0N  16.0W    40 KT...EXTRATROPICAL
120HR VT     12/0600Z...ABSORBED WITHIN EXTRATROPICAL LOW
 
$$
FORECASTER FRANKLIN
 
NNNN


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Page last modified: Tuesday, 21-Apr-2009 12:09:17 UTC