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Tropical Depression BONNIE


ZCZC MIATCDAT3 ALL
TTAA00 KNHC DDHHMM
TROPICAL DEPRESSION BONNIE DISCUSSION NUMBER   9
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL032010
1000 AM CDT SAT JUL 24 2010
 
STRONG SOUTHEASTERLY SHEAR HAS TAKEN ITS TOLL ON BONNIE AND THE
CYCLONE HAS BECOME A TIGHT SWIRL OF LOW CLOUDS WITH A FEW PATCHES
OF DEEP CONVECTION TO THE NORTHWEST OF THE CENTER. DATA FROM A
RECONNAISSANCE PLANE INDICATE THAT THE PRESSURE OF THE CENTER HAS
BEEN GRADUALLY RISING AND WIND REPORTS BARELY SUPPORT AN INTENSITY
OF 25 KNOTS. ENVIRONMENTAL CONDITIONS ARE NOT FAVORABLE FOR
STRENGTHENING AND THE DEPRESSION WILL PROBABLY CONTINUE WITH 25
KNOTS UNTIL IT MOVES INLAND TONIGHT. SINCE INTERMITTENT BURST OF
DEEP CONVECTION COULD DEVELOP...HOWEVER...STRONGER WIND GUSTS ARE
POSSIBLE IN SQUALLS PRIOR TO THE ARRIVAL OF THE CENTER TO THE
COAST. THE CYCLONE IS FORECAST TO DISSIPATE THEREAFTER.
 
A BLEND OF SATELLITE AND RECONNAISSANCE PLANE FIXES INDICATE THAT
BONNIE IS MOVING TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 15
KNOTS.  THE DEPRESSION IS BEING STEERED BY THE FLOW AROUND A HIGH
PRESSURE SYSTEM OVER THE SOUTHEASTERN UNITED STATES AND A CONTINUED
WEST-NORTHWEST MOTION WITH A SMALL DECREASE IN FORWARD SPEED IS
FORECAST.
 
BECAUSE BONNIE IS NOT EXPECTED TO RE-INTENSIFY...ALL COASTAL
TROPICAL STORM WARNINGS HAVE BEEN DISCONTINUED.
 
WE HAVE TO GIVE CREDIT TO DYNAMICAL AND GLOBAL MODELS THAT ALL ALONG
FORECAST THE CURRENT WEAKENING TREND OF BONNIE.
 
 
 
FORECAST POSITIONS AND MAX WINDS
 
INITIAL      24/1500Z 28.0N  86.7W    25 KT
 12HR VT     25/0000Z 29.1N  88.7W    25 KT
 24HR VT     25/1200Z 30.5N  91.0W    25 KT...INLAND
 36HR VT     26/0000Z 31.5N  92.5W    20 KT...POST-TROP/REMNT LOW
 48HR VT     26/1200Z 33.0N  93.0W    20 KT...POST-TROP/REMNT LOW
 72HR VT     27/1200Z...DISSIPATED
 
$$
FORECASTER AVILA/ROBERTS
 
NNNN


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Page last modified: Friday, 15-Apr-2011 12:09:04 UTC