je.st
news
Hurricane Epsilon Forecast Discussion Number 8
2020-10-21 04:36:55| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Tue Oct 20 2020 849 WTNT42 KNHC 210236 TCDAT2 Hurricane Epsilon Discussion Number 8 NWS National Hurricane Center Miami FL AL272020 1100 PM AST Tue Oct 20 2020 The tropical cyclone has continued to become better organized on satellite images this evening, with the Central Dense Overcast becoming increasingly symmetric. Also the eye, which was intermittently apparent earlier in the evening, has become better defined. Epsilon is being upgraded to a hurricane, consistent with a Dvorak intensity estimate from SAB. This is the tenth hurricane of the season. Epsilon is moving northwestward, or around 310/11 kt, but beginning to turn more toward a west-northwestward heading. The hurricane is expected to move generally west-northwestward on Wednesday in response to a mid-level high pressure system to its north and northwest. In a couple of days, the high is forecast to shift eastward and this should cause Epsilon to turn toward the north-northwest and pass to the east of Bermuda, with the center coming closest to the island in around 48 hours. In 3 to 4 days, the hurricane should turn northward and move through a break in the subtropical ridge. By the end of the forecast period, the system should accelerate north-northeastward to northeastward as it begins to move into the higher-latitude westerlies. The official forecast track is very close to both the previous NHC prediction and the corrected multi-model dynamical consensus. Delta is expected to strengthen some more as it moves over marginally warm waters and within an environment of moderate vertical shear during the next day or so. In 36 to 48 hours, the oceanic heat content below the cyclone is expected to become very low which should limit further intensification. The official intensity forecast is a little above the latest model consensus. By day 5, the global models show the cyclone interacting and merging with a frontal zone so the system will likely be extratropical by that time. Key Message: 1. Epsilon is forecast to remain at hurricane strength by the time it makes its closest approach to Bermuda late Thursday. While it is too soon to determine the exact details of Epsilon's track and intensity near the island, tropical storm conditions are possible on Bermuda beginning Thursday with dangerous surf conditions also likely. FORECAST POSITIONS AND MAX WINDS INIT 21/0300Z 28.5N 56.8W 65 KT 75 MPH 12H 21/1200Z 29.2N 58.5W 70 KT 80 MPH 24H 22/0000Z 29.9N 59.8W 75 KT 85 MPH 36H 22/1200Z 31.0N 60.6W 75 KT 85 MPH 48H 23/0000Z 32.2N 61.1W 75 KT 85 MPH 60H 23/1200Z 33.5N 61.6W 75 KT 85 MPH 72H 24/0000Z 34.6N 62.0W 75 KT 85 MPH 96H 25/0000Z 38.4N 58.8W 70 KT 80 MPH 120H 26/0000Z 44.0N 45.5W 60 KT 70 MPH...POST-TROP/EXTRATROP $$ Forecaster Pasch
Tags: number
discussion
forecast
hurricane
Category:Transportation and Logistics