Tropical Storm Elida Forecast Discussion
|
Español: Aviso Publico Discusión |
000 WTPZ45 KNHC 161435 TCDEP5 Tropical Storm Elida Discussion Number 8 NWS National Hurricane Center Miami FL EP052026 800 AM PDT Thu Jul 16 2026 There has once again been little change in the structure of Elida during the past several hours. Infrared satellite imagery indicates a large area of cold cloud tops near the center, although these tops are in a rectangular block rather than a curved band. A just- received GMI microwave overpass showed that the convection was located primarily southeast of the center and, while there was some curvature it was poorly organized. The various satellite intensity estimates are in the 45-55 kt range, and based on these the initial intensity remains 50 kt. The initial motion is now 280/11 kt. The cyclone is approaching a break in the subtropical ridge caused by a large mid- to upper-level trough seen in water vapor imagery west of California. Due to this, Elida is forecast to turn northwestward during the next 24 hours, with this general motion continuing through the end of the forecast period. The track guidance is in good agreement with this scenario through 72 h, but there is some spread after that. The models that forecast Elida to remain vertically deep, such as the GFS and the HAFS models, show a more northerly track, while other guidance shears the cyclone apart and keeps the low-level portion moving northwestward. Since the expectation is that Elida will be weakening over cold water by that time, the official forecast goes with the more northwesterly track. The new forecast track is similar to the previous track through 96 h, and is a little north of the previous track at 120 h. Elida has 36-48 h of favorable conditions left before the forecast track has it reaching decreasing sea surface temperatures. The intensity guidance shows steady intensification during this time, although the current structure is a caution flag about how much strengthening might occur. The new intensity forecast now shows a peak intensity of 75 kt in 36-48 h. After that, cooler waters and increasing vertical shear should cause steady weakening, and Elida is now expected to become a remnant low by 120 h. The new intensity forecast is a little below the bulk of the guidance models through 24 h, and it lies near the upper edge of the guidance between 36-120 h. FORECAST POSITIONS AND MAX WINDS INIT 16/1500Z 15.7N 117.4W 50 KT 60 MPH 12H 17/0000Z 16.0N 118.8W 55 KT 65 MPH 24H 17/1200Z 16.7N 120.4W 65 KT 75 MPH 36H 18/0000Z 17.9N 121.7W 75 KT 85 MPH 48H 18/1200Z 19.2N 123.1W 75 KT 85 MPH 60H 19/0000Z 20.6N 124.4W 70 KT 80 MPH 72H 19/1200Z 22.2N 125.6W 60 KT 70 MPH 96H 20/1200Z 25.2N 127.6W 40 KT 45 MPH 120H 21/1200Z 27.7N 129.9W 30 KT 35 MPH...POST-TROP/REMNT LOW $$ Forecaster Beven