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 214 
 WTNT44 KNHC 091434
 TCDAT4
 
 Tropical Storm Debby Discussion Number   9
 NWS National Hurricane Center Miami FL       AL042018
 1100 AM AST Thu Aug 09 2018
 
 Debby continues to produce a small area of deep convection just
 south of its exposed low-level center. Overnight and early this
 morning, the cyclone passed over a warm eddy within the Gulf Stream,
 and this may have provided enough energy to allow the cyclone to
 maintain its convection and intensity. A recent ASCAT overpass
 around 1230 UTC showed that the maximum winds of Debby are still
 near 40 kt, but the cyclone has nearly opened up into a trough of
 low pressure. Furthermore, the wind field has broadened, typically
 an indication that a system is losing its tropical characteristics.
 
 No significant changes have been made to the track or intensity
 forecasts. The tropical storm continues to move quickly
 northeastward, with an initial motion of 055/15 kt. The cyclone, or
 its remnants, should accelerate northeastward today ahead of a
 fast-moving shortwave trough until dissipation occurs. Debby is now
 crossing over the northern wall of the Gulf Stream, so weakening is
 expected to resume later today. The forecast conservatively shows
 Debby as a post-tropical cyclone at 12 hours, but it is very
 possible that Debby will dissipate later today as its forward speed
 increases.
 
 FORECAST POSITIONS AND MAX WINDS
 
 INIT  09/1500Z 44.5N  43.1W   40 KT  45 MPH
  12H  10/0000Z 46.2N  39.2W   35 KT  40 MPH...POST-TROP/EXTRATROP
  24H  10/1200Z...DISSIPATED
 
 $$
 Forecaster Zelinsky
 
 
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