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Tropical Storm Polo Forecast Discussion Number 6
2020-11-19 03:34:31| National Hurricane Center (East Pacific)
Issued at 700 PM PST Wed Nov 18 2020 000 WTPZ41 KNHC 190234 TCDEP1 Tropical Storm Polo Discussion Number 6 NWS National Hurricane Center Miami FL EP212020 700 PM PST Wed Nov 18 2020 Satellite imagery shows that the convection associated with Polo has diminished this evening, with the remaining convection now to the east of the exposed low-level center. The initial intensity is held at a possibly generous 35 kt as a blend of subjective and objective satellite intensity estimates. Polo is moving into an environment of moderate westerly shear, a dryer air mass, and decreasing sea surface temperatures, and the system should gradually weaken during the next 48 h. The new intensity forecast has minor adjustments from the previous forecast, and it calls for Polo to degenerate to a remnant low by 36 h and dissipate by 60 h. The initial motion is 285/11. A low-level ridge to the north of the cyclone should steer the system generally westward until it dissipates. and the new track forecast is an update of the previous forecast. FORECAST POSITIONS AND MAX WINDS INIT 19/0300Z 16.9N 118.3W 40 KT 45 MPH 12H 19/1200Z 17.2N 119.9W 35 KT 40 MPH 24H 20/0000Z 17.3N 122.0W 30 KT 35 MPH 36H 20/1200Z 17.3N 124.2W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 21/0000Z 17.3N 126.5W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 21/1200Z...DISSIPATED $$ Forecaster Beven
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