ALT Tropical Weather Outlook NWS National Hurricane Center Miami FL 200 PM EDT Sat Oct 17 2026 For the North Atlantic...Caribbean Sea and the Gulf of America: 1. Off the East Coast of the United States: A strong non-tropical low pressure area is expected to form during the next day or two off of the eastern coast of the United States. This low is likely to move slowly and erratically through the middle of next week, and some subtropical development is possible during this time. Regardless of whether subtropical development occurs, this system will cause high winds, coastal flooding, and dangerous surf along portions of the U.S. East Coast. Please consult statements and warnings from local National Weather Service offices and the Weather Prediction Center for more information, along with High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 7 days...low...20 percent.

ALT Key Messages: 1. A life-threatening storm surge is expected from the Mouth of the Mississippi River to Suwannee, Florida. Residents in the warning area should follow advice given by local officials and evacuate immediately if told to do so. 2. Damaging hurricane force-winds are expected over portions of the Florida Panhandle, southern Alabama, and southern Mississippi where a Hurricane Warning is in effect. Residents in these areas should prepare for the possibility of long-duration power outages. 3. Damaging wind gusts are possible over much of central and northern Alabama, extreme eastern Mississippi, and portions of western and northern Georgia, especially in areas of higher terrain. Additional Tropical Storm and High Wind Watches and Warnings may be required for portions of that area later tonight. Residents should secure loose outdoor items, avoid driving high-profile vehicles, and prepare for power outages.

ALT Mensajes clave: 1. Se espera una marejada ciclónica que amenaza la vida desde la Boca del Río Mississippi a Suwannee, Florida. Los residentes en el área de aviso deben seguir los consejos dados por los funcionarios locales y evacuar de inmediato si se les indica que lo hagan. 2. Se esperan vientos con fuerza de huracán dañinos sobre porciones de Florida Panhandle, sur de Alabama y sur de Mississippi, donde un Aviso de Huracán está en efecto. Los residentes de estas áreas deben prepararse para la posibilidad de cortes del suministro eléctrico de larga duración.

ALT Key Messages: 1. Isaias is expected to strengthen and be a strong hurricane when it approaches the northern Gulf Coast on Friday. A life-threatening storm surge is expected along a portion of the northern Gulf Coast, and a Storm Surge Warning remains in effect from the Mouth of the Mississippi River to Steinhatchee, Florida. Residents in the warning area should follow advice given by local officials and evacuate if told to do so. 2. Damaging hurricane force-winds are expected over portions of the Florida Panhandle, southern Alabama, and southern Mississippi, and a Hurricane Warning remains in effect from Ocean Springs, Mississippi to the Bay/Gulf County Line, Florida. Residents in these areas should prepare for the possibility of long-duration power outages. 3. Isaias will bring areas of heavy rainfall to the central U. S. Gulf coast and much of the Southeast Friday into the weekend. Flash and urban flooding, along with isolated river flooding, will be possible.

ALT Mensajes clave: 1. Se espera que Isaias se fortalezca y se convierta en un fuerte huracán cuando se acerque a la costa norte del Golfo el viernes. Se espera una marejada ciclónica que amenaza la vida a lo largo de una porción de la costa norte del Golfo, y un Aviso de Marejada Ciclónica permanece en efecto desde la Boca del Río Mississippi a Steinhatchee, Florida. Los residentes en el área de aviso deben seguir los consejos dados por los funcionarios locales y evacuar si se les dice. 2. Se esperan vientos con fuerza de huracán dañinos sobre porciones de Florida Panhandle, sur de Alabama y sur de Mississippi, y un Aviso de Huracán permanece en efecto desde Ocean Springs, Mississippi hasta Bay County Line, Florida. Los residentes de estas áreas deben prepararse para la posibilidad de cortes del suministro eléctrico de larga duración.

ALT Key Messages: 1. There is an increasing risk of dangerous wind and storm surge impacts along portions of the northern Gulf Coast. Residents from Louisiana to the Florida Panhandle should closely monitor the latest forecast updates and ensure they have their hurricane plan in place. Hurricane and Storm Surge Watches will likely be required for a portion of the northern Gulf coast later today. 2. Tropical Storm Isaias will bring areas of heavy rainfall to the central U. S. Gulf coast and much of the Southeast Friday into the weekend. Flash and urban flooding, along with isolated river flooding, will be possible. 3. Yucatan Peninsula of Mexico: Tropical Storm Isaias is expected to strengthen and could bring gusty winds and areas of heavy rain to the western portion of the Yucatan Peninsula over the next day or two.

ALT Mensajes clave: 1. Hay un riesgo creciente de impactos de viento y marejada ciclónica peligrosos a lo largo de porciones de la costa norte del Golfo. Los residentes de Louisiana a Florida Panhandle deben monitorear de cerca las últimas actualizaciones del pronóstico y asegurarse de que tengan su plan de huracán en su lugar. Hoy es probable que se requieran vigilancias de marejada ciclónica para una porción de la costa norte del Golfo. 2. La Tormenta Tropical Isaias traerá áreas de fuertes lluvias a la costa central del Golfo de los Estados Unidos y gran parte del sureste del viernes hasta el fin de semana. Será posible que se produzcan inundaciones repentinas y urbanas, junto con inundaciones aisladas de ríos. 3. Península de Yucatán de México: Se espera que la Tormenta Tropical Isaias se fortalezca y podría traer ráfagas de viento y áreas de lluvia intensa a la porción oeste de la Península de Yucatán durante el próximo día o dos.