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Post-Tropical Cyclone Octave Forecast Discussion Number 9
2019-10-19 22:39:43| National Hurricane Center (East Pacific)
Issued at 200 PM PDT Sat Oct 19 2019 000 WTPZ43 KNHC 192039 TCDEP3 Post-Tropical Cyclone Octave Discussion Number 9 NWS National Hurricane Center Miami FL EP182019 200 PM PDT Sat Oct 19 2019 Deep convection has not returned, now being absent for at least 12 hours. The environment around Octave is dry and stable, and it is unlikely that significant convection will come back any time soon. Octave has therefore become a remnant low, and its maximum winds are estimated to be 30 kt based on recent scatterometer data. The remnant low is expected to linger for at least the next 5 days with its intensity holding steady or decreasing due to moderate southeasterly shear and mid-level relative humidities of 30-40 percent. The initial motion remains very slowly east-northeastward, or 070/2 kt. The remnant low is trapped in a weak steering regime, and it is expected to meander for the next 5 days, only moving a net distance of 50-100 n mi during that period. A slight westward adjustment was made to this last NHC official forecast to account for the latest multi-model consensus aids and the ECMWF, which lies along the western edge of the guidance envelope. FORECAST POSITIONS AND MAX WINDS INIT 19/2100Z 11.6N 125.7W 30 KT 35 MPH...POST-TROPICAL 12H 20/0600Z 11.4N 125.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 24H 20/1800Z 11.1N 125.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 21/0600Z 10.8N 125.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 21/1800Z 10.9N 125.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 22/1800Z 11.7N 125.8W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 23/1800Z 12.4N 125.4W 20 KT 25 MPH...POST-TROP/REMNT LOW 120H 24/1800Z 12.0N 124.6W 20 KT 25 MPH...POST-TROP/REMNT LOW $$ Forecaster Berg
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