428 
 WTPA43 PHFO 252101
 TCDCP3
 
 TROPICAL DEPRESSION DARBY DISCUSSION NUMBER  57
 NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   EP052016
 1100 AM HST MON JUL 25 2016
 
 The low level center of Darby appeared to be trackable from
 satellite, surface observations on Kauai, and helpful reports from
 the NOAA ship Hiialakai overnight. Visible imagery this morning
 shows Darby as a low level swirl west of Niihau and becoming
 increasingly seperated from deep convection well north of Oahu. The
 satellite-based current intensity estimates were 2.0 from CPHC and
 JTWC, and 1.5 from SAB. There were some believable 30 kt winds
 northeast of the center from the 16 UTC RapidScat pass, so the
 intensity for this advisory will be maintained at 30 kt. 
  
 Shear has taken its toll on Darby and it seems quite unlikely that
 the system will be able to recover. The remnant circulation will be
 steered in part by the low level easterlies. Have adjusted the
 forecast slightly to the left of the previous official forecast to
 account for this as well as recent motion, which has been somewhat
 erratic. Darby is expected to be a post-tropical remnant low within
 12 hours, followed by dissipation by Tuesday. 
 
 FORECAST POSITIONS AND MAX WINDS
  
 INIT  25/2100Z 22.2N 161.0W   30 KT  35 MPH
  12H  26/0600Z 22.6N 162.1W   30 KT  35 MPH...POST-TROP/REMNT LOW
  24H  26/1800Z 23.5N 163.9W   25 KT  30 MPH...POST-TROP/REMNT LOW
  36H  27/0600Z...DISSIPATED
  
 $$
 Forecaster R Ballard