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Tropical Depression Norbert Forecast Discussion Number 18
2020-10-10 04:37:50| National Hurricane Center (East Pacific)
Issued at 900 PM MDT Fri Oct 09 2020 000 WTPZ44 KNHC 100237 TCDEP4 Tropical Depression Norbert Discussion Number 18 NWS National Hurricane Center Miami FL EP192020 900 PM MDT Fri Oct 09 2020 Small, sporadic bursts of deep convection continue to pulse near the center of Norbert, mainly in the western semicircle due to some easterly vertical wind shear. Earlier satellite-derived wind data suggested that Norbert's low-level circulation is becoming elongated, and its structure will be reassessed overnight when new scatterometer data becomes available. The initial intensity remains 25 kt with this advisory. The global models suggest Norbert will open up into a trough and merge with the Intertropical Convergence Zone (ITCZ) within the next 48-72 h. However, it could degenerate into a remnant low even sooner if convection wanes. The official forecast hangs on to pesky Norbert for a couple more days before showing dissipation by 60 h. Norbert is moving northwestward at 4 kt. A weak mid-level ridge to the northeast of the cyclone will continue steering Norbert slowly to the northwest for the next couple of days. The NHC track forecast is very similar to the previous one and remains near the track model consensus guidance. FORECAST POSITIONS AND MAX WINDS INIT 10/0300Z 14.0N 106.8W 25 KT 30 MPH 12H 10/1200Z 14.4N 107.0W 25 KT 30 MPH 24H 11/0000Z 14.9N 107.3W 25 KT 30 MPH 36H 11/1200Z 15.1N 107.4W 25 KT 30 MPH 48H 12/0000Z 15.3N 107.4W 25 KT 30 MPH 60H 12/1200Z...DISSIPATED $$ Forecaster Reinhart/Berg
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