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 855 
 WTNT44 KNHC 192058
 TCDAT4
 
 TROPICAL DEPRESSION FOUR DISCUSSION NUMBER   1
 NWS NATIONAL HURRICANE CENTER MIAMI FL       AL042016
 400 PM CDT SUN JUN 19 2016
 
 The low pressure system over the southwestern Gulf of Mexico has
 become sufficiently organized to be classified as a tropical
 depression, the fourth tropical cyclone of the 2016 Atlantic
 hurricane season. Although the thunderstorm activity was closer to
 the center of the cyclone earlier today, the convection is now
 a little better organized with some evidence of banding features on
 the north side. In addition, data from an Air Force Hurricane
 Hunter aircraft show that the circulation is well defined and has
 maximum winds near 30 kt.  This intensity is also supported by
 NOAA buoy 42055 which has been reporting winds around 30 kt
 most of the day.
 
 The depression is moving westward at about 7 kt to the south a
 mid-level high pressure system over the south-central United States.
 This general motion with a slight decrease in forward speed is
 predicted, taking the cyclone inland over eastern Mexico in about 24
 hours, or perhaps sooner.  The official NHC track forecast is close
 to the GFS and ECMWF models.
 
 The strong southwesterly wind shear currently affecting the
 depression is expected to lessen by tonight, which could allow for
 slight strengthening before the system begins to interact with land.
 Once inland, the cyclone is expected to quickly dissipate when it
 interacts with rugged terrain.
 
 Based on the forecast, the Government of Mexico has issued a
 tropical storm warning for a portion of the coast of Mexico within
 the state of Veracruz.
 
 The primary hazard associated with this system is expected to be
 heavy rainfall, which could cause life-threatening flash floods and
 mud slides over portions of eastern Mexico tonight through Tuesday.
 
 
 FORECAST POSITIONS AND MAX WINDS
 
 INIT  19/2100Z 19.9N  94.7W   30 KT  35 MPH
  12H  20/0600Z 20.0N  95.7W   35 KT  40 MPH
  24H  20/1800Z 20.3N  96.9W   35 KT  40 MPH...NEAR THE COAST
  36H  21/0600Z 20.5N  98.0W   20 KT  25 MPH...POST-TROP/REMNT LOW
  48H  21/1800Z...DISSIPATED
 
 $$
 Forecaster Cangialosi/Brown
 
 
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