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Hurricane Ida Public Advisory Number 11
2021-08-29 04:48:59| National Hurricane Center (Atlantic)
Issued at 1000 PM CDT Sat Aug 28 2021 000 WTNT34 KNHC 290248 TCPAT4 BULLETIN Hurricane Ida Advisory Number 11 NWS National Hurricane Center Miami FL AL092021 1000 PM CDT Sat Aug 28 2021 ...IDA FORECAST TO STRENGTHEN RAPIDLY BEFORE LANDFALL... ...LIFE-THREATENING STORM SURGE, POTENTIALLY CATASTROPHIC WIND DAMAGE, AND FLOODING RAINFALL EXPECTED TO IMPACT THE NORTHERN GULF COAST BEGINNING SUNDAY MORNING... SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...27.2N 88.0W ABOUT 145 MI...235 KM SSE OF THE MOUTH OF THE MISSISSIPPI RIVER ABOUT 235 MI...375 KM SE OF HOUMA LOUISIANA MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/H PRESENT MOVEMENT...NW OR 325 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...964 MB...28.47 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * East of Rockefeller Wildlife Refuge Louisiana to the Alabama/Florida border * Vermilion Bay, Lake Borgne, Lake Pontchartrain, Lake Maurepas, and Mobile Bay 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 Tropical Storm Warning is in effect for... * Cameron Louisiana to west of Intracoastal City Louisiana * Mouth of the Pearl River 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. 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 1000 PM CDT (0300 UTC), the center of Hurricane Ida was located near latitude 27.2 North, longitude 88.0 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, followed by a slower northward motion on Monday. A northeastward turn is forecast by Monday night. On the forecast track, the center of Ida will continue moving across the central and northern Gulf of Mexico tonight and early Sunday, and make landfall along the coast of Louisiana within the hurricane warning area Sunday afternoon or evening. Ida is then forecast to move well inland over portions of Louisiana and western Mississippi on Monday and Monday night. Maximum sustained winds are near 105 mph (165 km/h) with higher gusts. Rapid strengthening is forecast during the next 12 to 18 hours and Ida is expected to be an extremely dangerous major hurricane when it makes landfall along the Louisiana coast on Sunday. Rapid weakening is expected after landfall. Hurricane-force winds extend outward up to 40 miles (65 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). The estimated minimum central pressure based on data from the NOAA Hurricane Hunter aircraft is 964 mb (28.47 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 Burns Point, LA to Morgan City, LA...6-9 ft Lake Pontchartrain...5-8 ft Ocean Springs, MS to MS/AL border...4-7 ft Intracoastal City, LA to Burns Point, LA including Vermilion Bay...4-6 ft Lake Maurepas...4-6 ft Pecan Island, LA to Intracoastal City, LA...2-4 ft MS/AL border to AL/FL border including Mobile Bay...2-4 ft Sabine Pass to Pecan Island, LA...1-3 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 Louisiana coast beginning Sunday with tropical storm conditions expected to begin later tonight or early Sunday morning. These conditions will spread inland over portions of Louisiana and Mississippi Sunday night and Monday. RAINFALL: Heavy rainfall from Ida will begin to impact the Louisiana coast Sunday morning, spreading northeast into the Lower Mississippi Valley later Sunday into Monday. Total rainfall accumulations of 8 to 16 inches with isolated maximum amounts of 20 inches are possible across southeast Louisiana into southern Mississippi through Monday. This is likely to result in life-threatening flash and urban flooding and significant riverine flooding impacts. Elsewhere across eastern Louisiana, Mississippi, far southwestern Alabama and the Middle Tennessee Valley -- considerable flash and riverine flooding impacts are likely on Monday and Tuesday, with rainfall totals of 4 to 8 inches possible. Rainfall from Ida will begin to affect the Ohio Valley by mid-week, resulting in flash and riverine flooding impacts. TORNADOES: Tornadoes will be possible Sunday into Monday across eastern Louisiana, Mississippi, central and southern Alabama, and the Florida Panhandle. SURF: Swells are beginning to reach the northern Gulf coast and will continue to affect that area through Monday. 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 100 AM CDT. Next complete advisory at 400 AM CDT. $$ Forecaster Cangialosi
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Hurricane Ida Forecast Advisory Number 11
2021-08-29 04:48:29| National Hurricane Center (Atlantic)
Issued at 0300 UTC SUN AUG 29 2021 380 WTNT24 KNHC 290248 TCMAT4 HURRICANE IDA FORECAST/ADVISORY NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092021 0300 UTC SUN AUG 29 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * EAST OF ROCKEFELLER WILDLIFE REFUGE LOUISIANA TO THE ALABAMA/FLORIDA BORDER * VERMILION BAY...LAKE BORGNE...LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND MOBILE BAY 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 TROPICAL STORM WARNING IS IN EFFECT FOR... * CAMERON LOUISIANA TO WEST OF INTRACOASTAL CITY LOUISIANA * MOUTH OF THE PEARL RIVER 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. HURRICANE CENTER LOCATED NEAR 27.2N 88.0W AT 29/0300Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 325 DEGREES AT 14 KT ESTIMATED MINIMUM CENTRAL PRESSURE 964 MB MAX SUSTAINED WINDS 90 KT WITH GUSTS TO 110 KT. 64 KT....... 35NE 30SE 20SW 30NW. 50 KT....... 70NE 60SE 40SW 60NW. 34 KT.......120NE 100SE 80SW 110NW. 12 FT SEAS..180NE 180SE 150SW 120NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 27.2N 88.0W AT 29/0300Z AT 29/0000Z CENTER WAS LOCATED NEAR 26.7N 87.5W FORECAST VALID 29/1200Z 28.4N 89.4W MAX WIND 115 KT...GUSTS 140 KT. 64 KT... 35NE 30SE 20SW 30NW. 50 KT... 70NE 60SE 40SW 60NW. 34 KT...130NE 110SE 90SW 100NW. FORECAST VALID 30/0000Z 29.9N 90.7W...INLAND MAX WIND 85 KT...GUSTS 105 KT. 64 KT... 25NE 25SE 15SW 15NW. 50 KT... 50NE 50SE 30SW 30NW. 34 KT...100NE 120SE 80SW 70NW. FORECAST VALID 30/1200Z 31.4N 91.2W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 50NE 120SE 40SW 40NW. FORECAST VALID 31/0000Z 33.1N 90.6W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 31/1200Z 34.8N 89.1W...INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 01/0000Z 36.3N 86.7W...INLAND MAX WIND 20 KT...GUSTS 30 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 02/0000Z 38.6N 80.6W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. OUTLOOK VALID 03/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 27.2N 88.0W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 29/0600Z NEXT ADVISORY AT 29/0900Z $$ FORECASTER CANGIALOSI
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Tropical Depression Eleven Public Advisory Number 1
2021-08-29 04:48:02| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Sat Aug 28 2021 981 WTNT31 KNHC 290247 TCPAT1 BULLETIN Tropical Depression Eleven Advisory Number 1 NWS National Hurricane Center Miami FL AL112021 1100 PM AST Sat Aug 28 2021 ...NEW TROPICAL DEPRESSION FORMS OVER THE SUBTROPICAL CENTRAL ATLANTIC... ...EXPECTED TO BECOME A SHORT-LIVED TROPICAL STORM... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...33.0N 49.7W ABOUT 1320 MI...2120 KM W OF THE AZORES MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NE OR 50 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1010 MB...29.83 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Depression Eleven was located near latitude 33.0 North, longitude 49.7 West. The depression is moving toward the northeast near 12 mph (19 km/h). A faster northeastward motion is expected through Monday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Gradual strengthening is expected through Sunday, and the depression is expected to strengthen to a tropical storm later tonight or tomorrow. The system is then forecast to become extratropical by Monday. The estimated minimum central pressure is 1010 mb (29.83 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. $$ Forecaster Latto
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Tropical Depression Eleven Forecast Advisory Number 1
2021-08-29 04:47:29| National Hurricane Center (Atlantic)
Issued at 0300 UTC SUN AUG 29 2021 460 WTNT21 KNHC 290247 TCMAT1 TROPICAL DEPRESSION ELEVEN FORECAST/ADVISORY NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112021 0300 UTC SUN AUG 29 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 33.0N 49.7W AT 29/0300Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 50 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1010 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 33.0N 49.7W AT 29/0300Z AT 29/0000Z CENTER WAS LOCATED NEAR 32.7N 50.1W FORECAST VALID 29/1200Z 34.6N 47.1W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 50NE 70SE 20SW 0NW. FORECAST VALID 30/0000Z 36.8N 43.4W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 60NE 90SE 50SW 10NW. FORECAST VALID 30/1200Z 39.5N 39.2W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 10NE 30SE 10SW 10NW. 34 KT... 60NE 100SE 60SW 20NW. FORECAST VALID 31/0000Z 43.4N 36.4W...POST-TROP/EXTRATROP MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 60NE 100SE 60SW 20NW. FORECAST VALID 31/1200Z 47.9N 36.3W...POST-TROP/EXTRATROP MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 80NE 110SE 40SW 20NW. FORECAST VALID 01/0000Z...ABSORBED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 33.0N 49.7W NEXT ADVISORY AT 29/0900Z $$ FORECASTER LATTO
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Tropical Depression Ten Forecast Advisory Number 4
2021-08-29 04:35:28| National Hurricane Center (Atlantic)
Issued at 0300 UTC SUN AUG 29 2021 000 WTNT25 KNHC 290235 TCMAT5 TROPICAL DEPRESSION TEN FORECAST/ADVISORY NUMBER 4 NWS NATIONAL HURRICANE CENTER MIAMI FL AL102021 0300 UTC SUN AUG 29 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 16.6N 49.9W AT 29/0300Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTH OR 360 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 16.6N 49.9W AT 29/0300Z AT 29/0000Z CENTER WAS LOCATED NEAR 16.2N 49.9W FORECAST VALID 29/1200Z 17.7N 49.9W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 30NE 30SE 0SW 0NW. FORECAST VALID 30/0000Z 19.4N 49.9W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 30NE 30SE 0SW 0NW. FORECAST VALID 30/1200Z 20.8N 49.7W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 40SE 0SW 0NW. FORECAST VALID 31/0000Z 22.3N 49.2W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 40SE 0SW 0NW. FORECAST VALID 31/1200Z 23.5N 49.0W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 40SE 0SW 0NW. FORECAST VALID 01/0000Z 25.0N 49.2W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 40NE 40SE 0SW 0NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 02/0000Z 28.2N 50.6W MAX WIND 40 KT...GUSTS 50 KT. OUTLOOK VALID 03/0000Z 31.5N 51.7W MAX WIND 45 KT...GUSTS 55 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.6N 49.9W NEXT ADVISORY AT 29/0900Z $$ FORECASTER LATTO
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