{"id": "1216897585227431943", "title": "Public Tropical Cyclone Advisory", "adv_date": "2026-10-08T06:00:00Z", "msg": "317\nWTNT34 KNHC 080541\nTCPAT4\n \nBULLETIN\nHurricane Isaias Intermediate Advisory Number 6A\nNWS National Hurricane Center Miami FL       AL092026\n100 AM CDT Thu Oct 08 2026\n \n...MULTIPLE HURRICANE HUNTER AIRCRAFT INVESTIGATING ISAIAS AS IT \nMOVES EAST-NORTHEASTWARD...\n...ADDITIONAL INTENSIFICATION EXPECTED...\n \n \nSUMMARY OF 100 AM CDT...0600 UTC...INFORMATION\n----------------------------------------------\nLOCATION...23.1N 91.7W\nABOUT 180 MI...285 KM NW OF PROGRESO MEXICO\nABOUT 445 MI...715 KM SSW OF THE MOUTH OF THE MISSISSIPPI RIVER\nMAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H\nPRESENT MOVEMENT...ENE OR 70 DEGREES AT 9 MPH...15 KM/H\nMINIMUM CENTRAL PRESSURE...981 MB...28.97 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 Steinhatchee River, FL\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* Steinhatchee 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. A warning is typically issued 36\nhours before the anticipated first occurrence of\ntropical-storm-force winds, conditions that make outside\npreparations difficult or dangerous. Preparations to protect life\nand property should be rushed to completion.\n \nA Tropical Storm Warning means that tropical storm conditions are\nexpected somewhere within the warning area within 36 hours.\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 \nInterests in the Yucatan Peninsula of Mexico and elsewhere along the\nU.S. northern Gulf Coast should closely monitor the progress of this\nsystem.\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 100 AM CDT (0600 UTC), the center of Hurricane Isaias was located \nby Air Force Reserve and NOAA Hurricane Hunter aircraft near \nlatitude 23.1 North, longitude 91.7 West. Isaias is moving toward \nthe east-northeast near 9 mph (15 km/h). A continued \neast-northeastward motion is expected overnight, followed by a turn \ntoward the northeast and north later today and Friday. On the \nforecast track, Isaias is expected to pass to the north of the \nYucatan Peninsula later today and make landfall along the U.S. \nnorthern Gulf Coast within the warning area late Friday or early \nSaturday.\n \nAircraft data indicate that maximum sustained winds are near 75 \nmph (120 km/h) with higher gusts. Additional strengthening is \nexpected through early Friday, and Isaias should remain a strong \nhurricane as it approaches the northern Gulf Coast on Friday night. \n \nHurricane-force winds extend outward up to 25 miles (40 km) from the \ncenter and tropical-storm-force winds extend outward up to 60 miles \n(95 km).\n \nThe minimum central pressure measured recently by NOAA Hurricane \nHunter dropsonde data is 981 mb (28.97 inches).\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 \nOcean Springs, MS to Indian Pass, FL...5-7 ft\nMobile Bay...5-7 ft\nMouth of the Mississippi River, LA to Ocean Springs, MS...3-5 ft\nIndian Pass, FL to Steinhatchee River, FL...4-6 ft\nSteinhatchee River, FL to Yankeetown, FL...2-4 ft\nLake Pontchartrain...1-3 ft\n \nThe deepest water will occur along the immediate coast near and to\nthe east of the landfall location, where the surge will be\naccompanied by large and dangerous waves. Surge-related flooding\ndepends on the relative timing of the surge and the tidal cycle, and\ncan vary greatly over short distances. For information specific to\nyour area, please see products issued by your local National Weather\nService forecast office.\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 Friday night into early Saturday, with tropical storm\nconditions beginning on Friday. Tropical storm conditions are\nexpected in the warning areas on Friday and Friday night.\n \nGusty winds are possible in portions of the Yucatan Peninsula later \ntoday.\n \nRAINFALL: Isaias is expected to produce rainfall amounts of 1 to 3\ninches through today across coastal portions of the eastern Bay\nof Campeche with isolated higher amounts possible in the states of\nCampeche and western Yucatan.\n \nFrom Friday through the weekend, the system is expected to produce\nrainfall amounts of 3 to 7 inches, with localized totals up to 10\ninches, across the central U.S. Gulf Coast extending from far\nsoutheastern Louisiana to the Florida Panhandle. Rainfall amounts of\n1 to 3 inches, with localized amounts up to 5 inches, are possible\nacross much of the Southeast as far north as the Tennessee Valley\nand the Carolinas. Flash and urban flooding, along with isolated\nriver flooding, will be possible.\n \nFor a complete depiction of forecast rainfall associated with\nIsaias, please see the National Weather Service Storm Total Rainfall\nGraphic available at hurricanes.gov/graphics_at4.shtml?rainqpf and\nthe Flash Flood Risk graphic at\nhurricanes.gov/graphics_at4.shtml?ero\n \nTORNADOES: Isolated tornadoes will be possible Friday night in\ncoastal areas of Alabama and the Florida Panhandle. The tornado\nthreat will persist into Saturday for eastern Alabama, western\nGeorgia and the Florida Panhandle.\n \nSURF: Swells will affect the western and northern portions of the \nYucatan Peninsula beginning later today and spread northward toward \nthe Gulf Coast late this week. 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 complete advisory at 400 AM CDT.\n \n"}