Tropical Cyclone Discussion
Issued by NWS
Issued by NWS
014 WTPZ43 KNHC 030240 TCDEP3 Hurricane Rachel Discussion Number 24 NWS National Hurricane Center Miami FL EP182026 800 PM MST Fri Oct 02 2026 The convective structure of Rachel has remained largely unchanged since the previous advisory. Visible satellite imagery continues to show a cloud-filled eye inside a central dense overcast (CDO), with much of the deeper convection displaced slightly to the west of the center due to moderate northeasterly wind shear. The latest subjective intensity estimate from TAFB is T4.5/77 kt, while objective estimates from UW-CIMSS range from 79 to 94 kt. The initial intensity is lowered slightly to 85 kt for this advisory, blending the subjective and objective estimates. The initial motion is estimated to be 280/4 kt, or slowly westward. This slow westward motion is expected to continue, with a gradual increase in forward speed and a turn toward the west-northwest over the weekend as the ridge begins to weaken. While the track guidance is in fair agreement with this scenario, there is some guidance disagreement regarding the timing of the forward speed early next week. The updated track forecast closely aligns with the previous advisory through 96 h, then nudges slightly southward thereafter, lying near the reliable HCCA consensus model. Rachel is forecast to encounter moderate northeasterly vertical wind shear and a moisture-starved environment, which should initiate a weakening trend over the next several days. Sea-surface temperatures (SSTs) along the hurricane`s path will decrease from 29 to 27C over the next 36 to 48 h as Rachel moves through the cold wake of Hurricane Polo, further expediting this weakening. Beyond that time, SSTs should rebound slightly to 28C as the cyclone exits the cold wake, though it will be entering an increasingly dry mid-level environment. These competing factors are expected to result in little net change in strength during the 48- to 72-hour period, and the NHC intensity forecast continues to flatline Rachel at 70 kt. By 96 to 120 hours, Rachel is forecast to cross sub-26C waters and encounter even drier air, inducing steady weakening back to tropical storm strength by the end of the forecast period. FORECAST POSITIONS AND MAX WINDS INIT 03/0300Z 19.4N 111.5W 85 KT 100 MPH 12H 03/1200Z 19.5N 112.1W 80 KT 90 MPH 24H 04/0000Z 19.8N 112.9W 75 KT 85 MPH 36H 04/1200Z 20.1N 113.8W 75 KT 85 MPH 48H 05/0000Z 20.2N 114.8W 70 KT 80 MPH 60H 05/1200Z 20.4N 116.1W 70 KT 80 MPH 72H 06/0000Z 20.7N 117.7W 70 KT 80 MPH 96H 07/0000Z 21.2N 121.1W 65 KT 75 MPH 120H 08/0000Z 22.1N 124.2W 55 KT 65 MPH $$ Forecaster Pierce/Beven