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Hurricane Ida Probabilistic Storm Surge Graphics
2021-08-28 12:03:04| National Hurricane Center (Atlantic)
Probabilistic Storm Surge Graphics last updated Sat, 28 Aug 2021 10:03:04 GMT
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Summary for Hurricane Ida (AT4/AL092021)
2021-08-28 11:10:42| National Hurricane Center (Atlantic)
...IDA CONTINUES MOVING NORTHWESTWARD ACROSS THE SOUTHEASTERN GULF OF MEXICO... ...FORECAST TO RAPIDLY INTENSIFY BEFORE REACHING THE NORTHERN GULF COAST... As of 4:00 AM CDT Sat Aug 28 the center of Ida was located near 24.0, -85.2 with movement NW at 16 mph. The minimum central pressure was 987 mb with maximum sustained winds of about 80 mph.
Hurricane Ida Public Advisory Number 8
2021-08-28 11:10:42| National Hurricane Center (Atlantic)
Issued at 400 AM CDT Sat Aug 28 2021 000 WTNT34 KNHC 280909 CCA TCPAT4 BULLETIN Hurricane Ida Advisory Number 8...Corrected NWS National Hurricane Center Miami FL AL092021 400 AM CDT Sat Aug 28 2021 Corrected Storm Surge Hazard Section ...IDA CONTINUES MOVING NORTHWESTWARD ACROSS THE SOUTHEASTERN GULF OF MEXICO... ...FORECAST TO RAPIDLY INTENSIFY BEFORE REACHING THE NORTHERN GULF COAST... SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...24.0N 85.2W ABOUT 510 MI...825 KM SE OF NEW ORLEANS LOUISIANA ABOUT 185 MI...300 KM WNW OF HAVANA CUBA MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...987 MB...29.15 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Government of Cuba has discontinued all warnings for Cuba. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * East of Rockefeller Wildlife Refuge Louisiana to the Mississippi/Alabama border * Vermilion Bay, Lake Borgne, Lake Pontchartrain, and Lake Maurepas A Hurricane Warning is in effect for... * Intracoastal City Louisiana to the Mouth of the Pearl River * Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans A Storm Surge Watch is in effect for... * Sabine Pass to Rockefeller Wildlife Refuge Louisiana * Mobile Bay A Hurricane Watch is in effect for... * Cameron Louisiana to west of Intracoastal City Louisiana * Mouth of the Pearl River to the Mississippi/Alabama border A Tropical Storm Warning is in effect for... * Cameron Louisiana to west of Intracoastal City Louisiana * Mouth of the Pearl River to the Mississippi/Alabama border A Tropical Storm Watch is in effect for... * Mississippi/Alabama border to the Alabama/Florida border A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere along the northern U.S. Gulf coast should monitor the progress of this system. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 400 AM CDT (0900 UTC), the center of Hurricane Ida was located near latitude 24.0 North, longitude 85.2 West. Ida is moving toward the northwest near 16 mph (26 km/h) and this general motion should continue through late Sunday or early Monday. A slower northward motion is forecast on Monday. On the forecast track, the center of Ida will move over the southeastern Gulf of Mexico today and over the north central Gulf of Mexico on Sunday. Ida is then expected to make landfall along the U.S. northern Gulf coast within the hurricane warning area by late Sunday or early Monday, then move through portions of Louisiana or western Mississippi later on Monday. Maximum sustained winds are near 80 mph (130 km/h) with higher gusts. Rapid strengthening is forecast during the next 24 to 36 hours and Ida is expected to be an extremely dangerous major hurricane when it approaches the northern Gulf coast on Sunday. Weakening is expected after Ida makes landfall. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 115 miles (185 km). The estimated minimum central pressure is 987 mb (29.15 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Ida can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC, and on the web at hurricanes.gov/graphics_at4.shtml?key_messages. STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Morgan City, LA to Mouth of the Mississippi River...10-15 ft Mouth of the Mississippi River to Ocean Springs, MS including Lake Borgne...7-11 ft Intracoastal City, LA to Morgan City, LA including Vermilion Bay...6-9 ft Ocean Springs, MS to MS/AL border...4-7 ft Lake Pontchartrain...4-7 ft Lake Maurepas...3-5 ft Pecan Island, LA to Intracoastal City, LA...3-5 ft MS/AL border to AL/FL border including Mobile Bay...2-4 ft Sabine Pass to Pecan Island, LA...2-4 ft Overtopping of local levees outside of the Hurricane and Storm Damage Risk Reduction System is possible where local inundation values may be higher than those shown above. The deepest water will occur along the immediate coast near and to the east of the landfall location, where the surge will be accompanied by large and dangerous waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Hurricane conditions are expected in the hurricane warning area along the northern Gulf coast beginning Sunday with tropical storm conditions expected to begin by late Saturday night or early Sunday morning. These conditions will spread inland over portions of Louisiana and Mississippi Sunday night and Monday. Gusty winds are possible over portions of western Cuba and the Florida Keys this morning. RAINFALL: Ida will continue to lift north of Cuba this morning bringing an additional 2 to 4 inches of rain with isolated maximum amounts of 6 inches across western Cuba through today. These rainfall amounts may produce flash floods and mudslides. As Ida moves into the Louisiana coast late Sunday, total rainfall accumulations of 8 to 16 inches with isolated maximum amounts of 20 inches are possible across southeast Louisiana and southern Mississippi through Monday. This is likely to result in significant flash and riverine flooding impacts. Ida is forecast to turn northeast as it moves inland later Monday, with rainfall totals of 4 to 8 inches possible from northeastern Louisiana and central Mississippi into the Tennessee Valley. This is likely to result in considerable flash and riverine flooding impacts. TORNADOES: A few tornadoes will be possible Sunday through early Monday across southeast Louisiana and southern Mississippi. SURF: Swells generated by Ida will continue to affect western Cuba through Saturday morning. Swells will begin reaching portions of the northern Gulf coast Saturday night or early Sunday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 700 AM CDT. Next complete advisory at 1000 AM CDT. $$ Forecaster Beven
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Hurricane Ida Storm Surge Watch/Warning Map
2021-08-28 11:01:59| National Hurricane Center (Atlantic)
Storm Surge Watch/Warning Map last updated Sat, 28 Aug 2021 09:01:59 GMT
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Hurricane Ida Graphics
2021-08-28 11:01:41| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Sat, 28 Aug 2021 09:01:41 GMT Wind Speed Probabilities last updated Sat, 28 Aug 2021 09:23:20 GMT
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