Tropical Storm Elida Forecast Discussion
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Español: Aviso Publico Discusión |
000 WTPZ45 KNHC 151438 TCDEP5 Tropical Storm Elida Discussion Number 4 NWS National Hurricane Center Miami FL EP052026 800 AM MST Wed Jul 15 2026 Elida continues to slowly become better organized on satellite imagery after a nocturnal burst of deep convection. However, earlier data from the new AMSR-3 microwave imager showed that the circulation remains tilted with height, with the low-level center located northwest ahead of the deepest convection. The subjective Dvorak estimate from TAFB remains T3.0/45 kt, and the objective intensity estimates from UW-CIMSS have slightly increased between 39-44 kt. Therefore, the initial intensity has been increased to 40 kt for this advisory. Based on the earlier microwave imagery, Elida position was adjusted a little north of the previous track, but still appears to be moving westward at 280/13 kt. A prominent subtropical ridge north of Elida should maintain this general motion through the day. Afterwards, this ridge is expected to shift eastward as a weakness develops ahead of Elida, associated with a mid-latitude trough located off the California coast. This synoptic weather pattern should allow Elida to begin gaining more latitude by the end of this week as it gradually turns northwestward. This track should continue through early next week. The track guidance is in fairly good agreement early on, but across-track spread increases notably by the end of the forecast period. The latest NHC track forecast was adjusted a little north over the first 24 h, due to the initial position adjustment, but converges close to the prior forecast track. This forecast is also very close to the latest Google DeepMind ensemble mean (GDMI). The tropical storm is currently over a very warm ocean sea-surface (30 C) and embedded in a fairly moist environment. However, Elida's vertical structure is tilted to the south with height, and shear analysis from the GFS and ECMWF show evidence of mid-level northerly shear undercutting the convective outflow. Thus, short-term intensification will likely be on the gradual side. Assuming Elida becomes more vertically aligned and develops an inner core, a faster rate of intensification could occur in 36-48 h. After 60 h, the tropical cyclone will cross the 26 C isotherm with weakening expected to begin by this weekend. The latest NHC intensity forecast has a slightly lower peak than the prior cycle, but still remains on the upper end of the intensity aids. This forecast is closest to the latest GDMI and HCCA aids, but is higher than the HAFS-A/B guidance. FORECAST POSITIONS AND MAX WINDS INIT 15/1500Z 15.4N 113.5W 40 KT 45 MPH 12H 16/0000Z 15.5N 115.3W 45 KT 50 MPH 24H 16/1200Z 15.9N 117.6W 50 KT 60 MPH 36H 17/0000Z 16.4N 119.5W 60 KT 70 MPH 48H 17/1200Z 17.1N 121.4W 75 KT 85 MPH 60H 18/0000Z 18.2N 122.8W 80 KT 90 MPH 72H 18/1200Z 19.5N 124.2W 75 KT 85 MPH 96H 19/1200Z 22.0N 126.9W 60 KT 70 MPH 120H 20/1200Z 24.5N 129.0W 40 KT 45 MPH $$ Forecaster Papin/Katz