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Tropical Storm Marie Forecast Discussion Number 26
2020-10-05 16:50:32| National Hurricane Center (East Pacific)
Issued at 500 AM HST Mon Oct 05 2020 000 WTPZ43 KNHC 051450 TCDEP3 Tropical Storm Marie Discussion Number 26 NWS National Hurricane Center Miami FL EP182020 500 AM HST Mon Oct 05 2020 The remains of the deep convection associated with Marie continues to get further displaced from the exposed low-level center due strong upper-level westerly winds, with the gap now over 100 n mi between those two features. The various satellite intensity estimates suggest that the current intensity may only be 45 kt. However, due to fair number of 55-kt wind vectors on the ASCAT overpass early this morning, the intensity is conservatively being lowered to 50 kt for this advisory. Marie is expected to weaken over the next few days in a hostile environment of 30 plus kt of wind shear, over SSTs cooler that 25 degrees C, surrounded by a dry and stable airmass. With the convection now displaced so far from the center, and no regeneration of convection near the center anticipated, Marie is now forecast to become a remnant low by Tuesday night. This could happen even sooner if the current trend continues. Marie continues to move west-northwestward at about 8 kt around a mid-level ridge to its north. A turn to the west is expected in a couple of days as the cyclone becomes a more shallow system. The latest NHC track forecast is little changed from the previous one, and is near the various track consensus forecasts. FORECAST POSITIONS AND MAX WINDS INIT 05/1500Z 21.1N 131.9W 50 KT 60 MPH 12H 06/0000Z 21.5N 133.0W 40 KT 45 MPH 24H 06/1200Z 22.1N 134.5W 35 KT 40 MPH 36H 07/0000Z 22.7N 136.0W 30 KT 35 MPH...POST-TROP/REMNT LOW 48H 07/1200Z 23.1N 137.1W 30 KT 35 MPH...POST-TROP/REMNT LOW 60H 08/0000Z 23.3N 138.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 08/1200Z 23.3N 138.8W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 09/1200Z 22.9N 140.2W 20 KT 25 MPH...POST-TROP/REMNT LOW 120H 10/1200Z...DISSIPATED $$ Forecaster Latto
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