ZCZC MIATCDEP4 ALL TTAA00 KNHC DDHHMM Tropical Depression Lidia Discussion Number 18 NWS National Hurricane Center Miami FL EP142017 800 PM PDT Sat Sep 02 2017 Lidia continues to weaken over the very cold waters of the northeastern Pacific. There have been no recent reports of sustained winds above 30 kt, so Lidia is now classified as a 30-kt depression, in agreement with the Dvorak current intensity estimate from TAFB. Deep convection is limited to a broken band displaced about 120 n mi to the northeast of the low-level center. Assuming this convective trend continues, Lidia will likely become a remnant low overnight. After becoming post-tropical, the global models are in good agreement that the circulation of Lidia should continue to gradually spin down over the course of a day or two, before dissipating in about 48 h. A recent SSMIS overpass indicates that the low-level circulation is somewhat ill defined and located nearly a degree to the west of our previous center estimate. The initial position and subsequent track forecast has been shifted in that direction, but not quite as far as the microwave data would suggest, given the uncertainty associated with that fix. Regardless of the exact center position, Lidia is still expected to continue generally west-northwestward to northwestward for the next 24-36 h along the southwest periphery of a mid-level ridge located over the southwestern U.S. FORECAST POSITIONS AND MAX WINDS INIT 03/0300Z 29.0N 115.8W 30 KT 35 MPH 12H 03/1200Z 29.9N 117.2W 25 KT 30 MPH...POST-TROP/REMNT LOW 24H 04/0000Z 31.0N 119.1W 20 KT 25 MPH...POST-TROP/REMNT LOW 36H 04/1200Z 31.7N 121.2W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 05/0000Z...DISSIPATED $$ Forecaster Zelinsky NNNN
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