Gabrielle 1:30pm AST Special Advisory: 50mph; Intensity forecast adjusted to 60mph
Posted by
Chris in Tampa on 9/10/2013, 2:25 pm
TROPICAL STORM GABRIELLE SPECIAL DISCUSSION NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL AL072013
130 PM AST TUE SEP 10 2013
A PAIR OF ASCAT PASSES FROM 1342Z AND 1436Z INDICATE THAT GABRIELLE
IS STRONGER THAN PREVIOUSLY ESTIMATED. BOTH PASSES SHOWED SEVERAL
45-KT WIND RETRIEVALS...AND THAT IS THE INITIAL INTENSITY FOR THIS
SPECIAL ADVISORY. THE INTENSITY FORECAST HAS BEEN ADJUSTED UPWARD
AT 12 AND 24 HOURS TO 50 KT BASED ON THE INCREASE IN THE INITIAL
INTENSITY. THE ANALYZED 34-KT WIND RADII HAVE ALSO BEEN ADJUSTED
OUTWARD BASED ON THE ASCAT DATA...AND THEIR FORECAST HAS BEEN
MODIFIED AS WELL TO REFLECT THE LARGER WIND FIELD. AN AIR FORCE
RESERVE AIRCRAFT WILL INVESTIGATE GABRIELLE LATER THIS AFTERNOON TO
PROVIDE MORE DETAILED INFORMATION ON THE STRENGTH AND STRUCTURE OF
THE CYCLONE.
NO CHANGES WERE MADE TO THE PREVIOUS TRACK FORECAST FOR THIS SPECIAL
ADVISORY.
NOTE THAT THIS SPECIAL ADVISORY TAKES THE PLACE OF THE 200 PM
AST/1800 UTC INTERMEDIATE ADVISORY.
FORECAST POSITIONS AND MAX WINDS
INIT 10/1730Z 30.9N 64.8W 45 KT 50 MPH
12H 11/0000Z 31.9N 64.9W 50 KT 60 MPH
24H 11/1200Z 33.1N 65.2W 50 KT 60 MPH
36H 12/0000Z 34.0N 65.8W 45 KT 50 MPH
48H 12/1200Z 35.2N 66.2W 45 KT 50 MPH
72H 13/1200Z 39.5N 65.0W 45 KT 50 MPH
96H 14/1200Z 49.0N 56.5W 45 KT 50 MPH...POST-TROP/EXTRATROP
120H 15/1200Z...DISSIPATED
$$
FORECASTER BRENNAN
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Gabrielle 1:30pm AST Special Advisory: 50mph; Intensity forecast adjusted to 60mph - Chris in Tampa, 9/10/2013, 2:25 pm
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