ZCZC MIATCDEP1 ALL TTAA00 KNHC DDHHMM Tropical Storm Eugene Discussion Number 6 NWS National Hurricane Center Miami FL EP062023 300 PM MDT Sun Aug 06 2023 Eugene is sending some mixed signals this afternoon. While earlier a possible eye feature was present on the visible imagery, the feature has weakened and become part of a ragged central dense overcast. Overall, the system doesn't seem much different than the last advisory, so 60 kt is maintained on this cycle. The Dvorak estimate ranges are quite large, with estimates of 40-65 kt, so the initial wind is a bit more uncertain than average. The storm should begin to weaken overnight as it crosses a tight sea-surface temperature gradient, with very cold waters along the forecast track within 24 h. By early Tuesday, Eugene should transition to a non-convective post-tropical low, consistent with the stable environment and the latest global model infrared satellite forecasts. The new NHC forecast is slightly lower than the last one, between the model consensus and the NOAA corrected-consensus prediction. Eugene is moving along pretty quickly to the west-northwest at about 17 kt. This motion should continue for about a day until it reaches the edge of the subtropical ridge. Thereafter, a weaker cyclone should slow down and turn northward toward a weakness in the ridge. However, the very hostile environment should cause what's left of Eugene to stall well west of Baja California and degenerate to a trough in about 3 days. The latest NHC track is basically an update of the previous one, close to the eastern Pacific track consensus TVCE. FORECAST POSITIONS AND MAX WINDS INIT 06/2100Z 22.7N 113.2W 60 KT 70 MPH 12H 07/0600Z 23.7N 115.7W 55 KT 65 MPH 24H 07/1800Z 24.9N 118.9W 45 KT 50 MPH 36H 08/0600Z 25.7N 121.1W 35 KT 40 MPH...POST-TROPICAL 48H 08/1800Z 26.5N 122.3W 25 KT 30 MPH...POST-TROP/REMNT LOW 60H 09/0600Z 27.0N 122.0W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 09/1800Z...DISSIPATED $$ Forecaster Blake NNNN