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 120 
 WTPZ45 KNHC 010832
 TCDEP5
 
 Tropical Storm Hector Discussion Number   3
 NWS National Hurricane Center Miami FL       EP102018
 200 AM PDT Wed Aug 01 2018
 
 Hector is still somewhat disorganized, with a majority of its deep
 convection displaced to the south and west of its surface center. In
 fact, a recent AMSU pass around 0515 UTC indicated that the center
 of Hector was nearly exposed on the northeast side of a small curved
 band. Dvorak classifications from TAFB and SAB have not changed
 since the last advisory and the ASCAT instruments missed the cyclone
 once again, so the initial intensity has been held at 35 kt.
 
 Easterly shear of around 10 kt, as analyzed in SHIPS diagnostics,
 appears to be the primary factor preventing Hector from becoming
 better organized. The latest GFS and ECMWF runs at 00Z suggest that
 the shear will increase slightly during the next 24-36 hours before
 decreasing substantially during the second half of the forecast
 period. Despite the shear, all of the intensity guidance forecasts
 that Hector will intensify in an otherwise favorable environment,
 and the intensity guidance is generally higher than it was
 previously. The dynamical hurricane models, HWRF, HMON, and
 COAMPS-TC all bring Hector to near major hurricane strength, while
 SHIPS and LGEM are a little lower. Given that Hector is still fairly
 disorganized, the intensity forecast for the first 24 hours is
 somewhat conservative, and favors the statistical-dynamical models.
 Beyond that time, the NHC intensity forecast is a little higher than
 it was previously, but is still just below the intensity consensus.
 
 The estimated initial motion of the tropical storm is 285/13 kt.
 Little change has been made to the track forecast, which has been
 adjusted only slightly to the north through most of the forecast
 period. The track guidance is in very good agreement on the track of
 Hector, and the main source of uncertainty is the speed at which an
 extensive mid-level ridge to the north will steer the cyclone
 westward. Since I see no obvious reason to favor any one of the
 typically-reliable global models, the NHC forecast is now very close
 to the various consensus aids.
 
 
 FORECAST POSITIONS AND MAX WINDS
 
 INIT  01/0900Z 13.4N 119.4W   35 KT  40 MPH
  12H  01/1800Z 13.9N 121.1W   40 KT  45 MPH
  24H  02/0600Z 14.2N 123.2W   50 KT  60 MPH
  36H  02/1800Z 14.4N 125.2W   60 KT  70 MPH
  48H  03/0600Z 14.4N 127.5W   65 KT  75 MPH
  72H  04/0600Z 14.3N 132.0W   75 KT  85 MPH
  96H  05/0600Z 14.0N 136.0W   80 KT  90 MPH
 120H  06/0600Z 14.0N 140.0W   80 KT  90 MPH
 
 $$
 Forecaster Zelinsky
 
 
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