{"id": "1217219388981805063", "title": "Public Tropical Cyclone Advisory", "adv_date": "2026-10-09T09:00:00Z", "msg": "803\nWTNT34 KNHC 090857\nTCPAT4\n \nBULLETIN\nHurricane Isaias Advisory Number  11\nNWS National Hurricane Center Miami FL       AL092026\n400 AM CDT Fri Oct 09 2026\n \n...ISAIAS STRENGTHENING...\n...PREPARATIONS SHOULD BE RUSHED TO COMPLETION AS THE WEATHER WILL\nGO DOWNHILL QUICKLY TODAY....\n \n \nSUMMARY OF 400 AM CDT...0900 UTC...INFORMATION\n----------------------------------------------\nLOCATION...26.4N 88.0W\nABOUT 370 MI...590 KM NNE OF PROGRESO MEXICO\nABOUT 200 MI...320 KM SSE OF THE MOUTH OF THE MISSISSIPPI RIVER\nMAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H\nPRESENT MOVEMENT...NNE OR 20 DEGREES AT 15 MPH...24 KM/H\nMINIMUM CENTRAL PRESSURE...963 MB...28.44 INCHES\n \n \nWATCHES AND WARNINGS\n--------------------\nCHANGES WITH THIS ADVISORY:\n \nNone.\n \nSUMMARY OF WATCHES AND WARNINGS IN EFFECT:\n \nA Storm Surge Warning is in effect for...\n* Mouth of the Mississippi River to the Suwannee River\n \nA Hurricane Warning is in effect for...\n* Ocean Springs, MS to the Bay/Gulf County Line, FL\n \nA Tropical Storm Warning is in effect for...\n* Jefferson/Plaquemines Parish Line, LA to west of Ocean Springs, MS\n* East of Bay/Gulf County Line to Aucilla River, FL\n \nA Storm Surge Watch is in effect for...\n* Suwannee River to Yankeetown, FL\n \nA Storm Surge Warning means there is a danger of life-threatening\ninundation, from rising water moving inland from the coastline,\nduring the next 36 hours in the indicated locations. For a depiction\nof areas at risk, please see the National Weather Service Storm\nSurge Watch/Warning Graphic, available at hurricanes.gov. This is a\nlife-threatening situation. Persons located within these areas\nshould take all necessary actions to protect life and property from\nrising water and the potential for other dangerous conditions.\nPromptly follow evacuation and other instructions from local\nofficials.\n \nA Hurricane Warning means that hurricane conditions are expected\nsomewhere within the warning area, in this case within 24 hours.\nPreparations to protect life and property should be rushed to\ncompletion.\n \nA Tropical Storm Warning means that tropical storm conditions are\nexpected somewhere within the warning area, in this case within 24\nhours.\n \nA Storm Surge Watch means there is a possibility of life-\nthreatening inundation, from rising water moving inland from the\ncoastline, in the indicated locations during the next 48 hours. For\na depiction of areas at risk, please see the National Weather\nService Storm Surge Watch/Warning Graphic, available at\nhurricanes.gov.\n \nFor storm information specific to your area, including possible\ninland watches and warnings, please monitor products issued by your\nlocal National Weather Service forecast office.\n \n \nDISCUSSION AND OUTLOOK\n----------------------\nAt 400 AM CDT (0900 UTC), the eye of Hurricane Isaias was located\nnear latitude 26.4 North, longitude 88.0 West. Isaias is moving\ntoward the north-northeast near 15 mph (24 km/h). A turn toward the\nnorth is expected later today. On the forecast track, Isaias is\nexpected to approach the U.S. northern Gulf Coast this afternoon and\nmake landfall within the warning area tonight or early Saturday.\n \nAir Force and NOAA Hurricane Hunter data indicate that the maximum\nsustained winds have increased to near 110 mph (175 km/h) with\nhigher gusts. Isaias is likely to become a major hurricane this\nmorning. Slight weakening is expected before landfall, but it is\nexpected to remain a dangerous hurricane.\n \nHurricane-force winds extend outward up to 30 miles (45 km) from the\ncenter and tropical-storm-force winds extend outward up to 185 miles\n(295 km).\n \nThe estimated minimum central pressure is 963 mb (28.44 inches) \nbased on Air Force dropsonde data.\n \n \nHAZARDS AFFECTING LAND\n----------------------\nKey messages for Isaias can be found in the Tropical Cyclone\nDiscussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.\n \nSTORM SURGE: The combination of a dangerous storm surge and the\ntide will cause normally dry areas near the coast to be flooded by\nrising waters moving inland from the shoreline. The water could\nreach the following heights above ground somewhere in the indicated\nareas if the peak surge occurs at the time of high tide...\n \nDauphin Island, AL to Indian Pass, FL...5-7 ft\nIndian Pass, FL to Steinhatchee River, FL...4-6 ft\nSteinhatchee River, FL to Suwannee River, FL...3-5 ft\nMouth of the Mississippi River, LA to Dauphin Island, AL...3-5 ft\nMobile Bay...3-5 ft\nSuwannee River, FL to Yankeetown, FL...2-4 ft\nYankeetown, FL to Egmont Key, FL...1-3 ft\nLake Pontchartrain...1-3 ft\nMorgan City, LA to Mouth of the Mississippi River, LA...1-2 ft\n \nThe deepest water will occur along the immediate coast in areas of\nonshore winds, where the surge will be accompanied by large and\ndangerous waves. Surge-related flooding depends on the relative\ntiming of the surge and the tidal cycle, and can vary greatly over\nshort distances. For information specific to your area, please see\nproducts issued by your local National Weather Service forecast\noffice.\n \nFor a complete depiction of areas at risk of storm surge inundation,\nplease see the National Weather Service Peak Storm Surge Graphic,\navailable at hurricanes.gov/graphics_at4.shtml?peakSurge.\n \nWIND: Hurricane conditions are expected within the Hurricane Warning\narea tonight into early Saturday, with tropical storm conditions\nbeginning later today. Tropical storm conditions are expected in\nthe warning areas beginning in the next few hours.\n \nRAINFALL:  Through the weekend, Isaias is expected to produce\nrainfall amounts of 4 to 8 inches across southern Alabama, the\nFlorida Panhandle and Big Bend, and southwest Georgia. Localized\ntotals up to 15 inches are possible, particularly within banding\nacross the Florida Panhandle and Big Bend.\n \nAcross much of the remainder of the Southeast, rainfall amounts of 2\nto 5 inches are expected.  Localized higher amounts up to 10 inches\nare possible, especially across the Southern Appalachians and\ncoastal Carolinas.\n \nFlash and urban flooding is likely across the region, with\nconsiderable impacts possible across much of southern Alabama and\nthe Florida Panhandle into southwestern Georgia. River flooding is\nalso expected, some of which could be significant.\n \nFor a complete depiction of forecast rainfall associated with\nIsaias, please see the National Weather Service Storm Total Rainfall\nGraphic available at\nhurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk\ngraphic at hurricanes.gov/graphics_at4.shtml?ero.\n \nTORNADOES: A tornado risk will begin late this afternoon and\ncontinue tonight in coastal areas of Alabama, the Florida Panhandle,\nand far southwest Georgia. The tornado threat will continue Saturday\nacross parts of eastern Alabama, the Florida Panhandle, Georgia, and\nthe Carolinas.\n \nSURF: Swells from Isaias are affecting the western and northern\nportions of the Yucatan Peninsula and will spread northward toward\nthe Gulf Coast later today. These swells are likely to cause\nlife-threatening surf and rip current conditions. Please consult\nproducts from your local weather office.\n \nA depiction of rip current risk for the United States can be found\nat: hurricanes.gov/graphics_at4.shtml?ripCurrents\n \n \nNEXT ADVISORY\n-------------\nNext intermediate advisory at 700 AM CDT.\nNext complete advisory at 1000 AM CDT.\n \n"}