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Summary for Hurricane Laura (AT3/AL132020)
2020-08-27 08:55:35| National Hurricane Center (Atlantic)
...EYEWALL OF LAURA PUSHING INLAND ACROSS SOUTHWESTERN LOUISIANA... ...CATASTROPHIC STORM SURGE, EXTREME WINDS, AND FLASH FLOODING ONGOING... As of 2:00 AM CDT Thu Aug 27 the center of Laura was located near 30.0, -93.3 with movement N at 15 mph. The minimum central pressure was 941 mb with maximum sustained winds of about 140 mph.
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Hurricane Laura Public Advisory Number 29A
2020-08-27 07:59:05| National Hurricane Center (Atlantic)
Issued at 100 AM CDT Thu Aug 27 2020 000 WTNT33 KNHC 270558 TCPAT3 BULLETIN Hurricane Laura Intermediate Advisory Number 29A NWS National Hurricane Center Miami FL AL132020 100 AM CDT Thu Aug 27 2020 ...EXTREMELY DANGEROUS CATEGORY 4 HURRICANE LAURA MAKES LANDFALL NEAR CAMERON LOUISIANA... ...CATASTROPHIC STORM SURGE, EXTREME WINDS, AND FLASH FLOODING OCCURRING IN PORTIONS OF LOUISIANA... SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...29.8N 93.3W ABOUT 30 MI...45 KM SSW OF LAKE CHARLES LOUISIANA ABOUT 40 MI...70 KM E OF PORT ARTHUR TEXAS MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H PRESENT MOVEMENT...N OR 350 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...938 MB...27.70 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Hurricane Warning from High Island westward to San Luis Pass, Texas has been replaced with a Tropical Storm Warning. The Tropical Storm Warning southwest of San Luis Pass has been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Freeport Texas to the Mouth of the Mississippi River A Hurricane Warning is in effect for... * High Island Texas to Intracoastal City Louisiana A Tropical Storm Warning is in effect for... * San Luis Pass to High Island Texas * East of Intracoastal City Louisiana to the Mouth of the Mississippi River A Hurricane Watch is in effect for... * East of Intracoastal City to west of Morgan City Louisiana A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline 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. Preparations to protect life and property should be rushed to completion. A Hurricane Watch means that hurricane conditions are possible within the watch area. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. 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 100 AM CDT (0600 UTC), Doppler radar images indicate that the eye of Hurricane Laura has made landfall at the coast near Cameron, Louisiana, near latitude 29.8 North, longitude 93.3 West. Laura is moving toward the north near 15 mph (24 km/h), and this motion should continue through the day. A northeastward to east-northeastward motion is expected tonight and Friday. On the forecast track, Laura will move inland across southwestern Louisiana this morning, and then continue northward across the state through this afternoon. The center of Laura is forecast to move over Arkansas tonight, and over the mid-Mississippi Valley on Friday, and the mid-Atlantic states on Saturday. Air Force reconnaissance and Doppler radar data indicate that the maximum sustained winds are near 150 mph (240 km/h) with higher gusts. Rapid weakening is forecast as Laura moves inland. Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 205 miles (335 km). A Weatherflow site in Cameron recently reported a sustained wind of 101 mph (163 km/h) with a gust to 116 mph (187 km/h). A National Ocean Service site at Calcasieu Pass reported a sustained wind of 93 mph (150 km/h) and a wind gust of 127 mph (204 km/h) within the last hour. A wind gust of 104 mph (167 km/h) was recently reported at Lake Charles, Louisiana. The minimum central pressure estimated the from Air Force Hurricane Hunter observations is 938 mb (27.70 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Laura can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. 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... Johnson Bayou to Rockefeller Wildlife Refuge including Calcasieu Lake...15-20 ft Rockefeller Wildlife Refuge to Intracoastal City...10-15 ft Intracoastal City to Morgan City including Vermilion Bay...8-12 ft Sea Rim State Park to Johnson Bayou including Sabine Lake...6-9 ft Morgan City to Mouth of the Mississippi River...4-7 ft High Island to Sea Rim State Park...3-6 ft Freeport to High Island including Galveston Bay...2-4 ft Mouth of the Mississippi River to Ocean Springs including Lake Borgne...1-3 ft Lake Pontchartrain and Lake Maurepas...1-3 ft The deepest water will occur along the immediate coast near and to the right of the landfall location, where the surge will be accompanied by large and destructive waves. Unsurvivable storm surge with large and destructive waves will cause catastrophic damage from Sea Rim State Park, Texas, to Intracoastal City, Louisiana, including Calcasieu and Sabine Lakes. This surge could penetrate up to 40 miles inland from the immediate coastline, and flood waters will not fully recede for several days after the storm. 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 through the morning, with catastrophic wind damage expected near Laura's eyewall. Tropical storm conditions will spread northward within the warning areas through the day. Hurricane-force winds and damaging wind gusts are also expected to spread well inland into portions of eastern Texas and western Louisiana this morning. RAINFALL: Through Friday, Laura is expected to produce the following rainfall totals: Across the northwestern Gulf Coast from far southwest Louisiana and the Golden Triangle of Southeast Texas: 8 to 12 inches with isolated totals of 18 inches. Across central and the rest of western Louisiana into far eastern Texas: 5 to 10 inches with isolated totals of 15 inches. Across much of Arkansas: 3 to 7 inches with isolated totals of 10 inches. This rainfall will cause widespread flash and urban flooding, small streams and creeks to overflow their banks, and minor to moderate freshwater river flooding. By Friday into Saturday, Laura is expected to produce the following rainfall totals: Across the mid-Mississippi and portions of the Tennessee Valley, Lower Ohio Valley, and central Appalachians: 2 to 4 inches with isolated maximum amounts of 6 inches. This rainfall may lead to flash and urban flooding and rapid rises on small streams. Across the Mid-Atlantic Region: 1 to 3 inches. TORNADOES: Several tornadoes are expected overnight over Louisiana, far southeast Texas, and southwestern Mississippi. The risk for tornadoes will continue through the day across Louisiana, Arkansas, and western Mississippi. SURF: Swells produced by Laura are affecting the U.S. Gulf coast from the west coast of Florida to Texas and northeastern Mexico. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 400 AM CDT. $$ Forecaster Cangialosi/Blake/Zelinsky
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Hurricane Laura Update Statement
2020-08-27 06:56:33| National Hurricane Center (Atlantic)
Issued at 1200 AM CDT Thu Aug 27 2020 000 WTNT63 KNHC 270456 TCUAT3 Hurricane Laura Tropical Cyclone Update NWS National Hurricane Center Miami FL AL132020 1200 AM CDT Thu Aug 27 2020 ...NORTHERN EYEWALL OF LAURA MOVING OVER CAMERON PARISH... ...CATASTROPHIC STORM SURGE, EXTREME WINDS, AND FLASH FLOODING OCCURING IN SOUTHWESTERN LOUISIANA... The eyewall of Laura is moving onshore over southwestern Louisiana. TAKE COVER NOW! Treat these imminent extreme winds as if a tornado was approaching and move immediately to the safe room in your shelter. Take action now to protect your life! The safest place to be during a major landfalling hurricane is in a reinforced interior room away from windows. Get under a table or other piece of sturdy furniture. Use mattresses, blankets or pillows to cover your head and body. Remain in place through the passage of these life-threatening conditions. A Weatherflow site in Cameron recently reported a sustained wind of 84 mph (135 km/h) with a gust to 110 mph (177 km/h). A HurrNet Station in Cameron recently reported a sustained wind of 74 mph (119 km/h) with a gust to 93 mph (150 km/h). A National Ocean Service site at Calcasieu Pass reported a wind gust of 89 mph (132 km/h) within the last hour. SUMMARY OF 1200 AM CDT...0500 UTC...INFORMATION ----------------------------------------------- LOCATION...29.5N 93.3W ABOUT 40 MI...65 KM S OF LAKE CHARLES LOUISIANA ABOUT 45 MI...70 KM SE OF PORT ARTHUR TEXAS MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H PRESENT MOVEMENT...NNW OR 345 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...938 MB...27.70 INCHES $$ Forecaster Zelinsky/Cangialosi
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Summary for Hurricane Laura (AT3/AL132020)
2020-08-27 06:56:33| National Hurricane Center (Atlantic)
...NORTHERN EYEWALL OF LAURA MOVING OVER CAMERON PARISH... ...CATASTROPHIC STORM SURGE, EXTREME WINDS, AND FLASH FLOODING OCCURING IN SOUTHWESTERN LOUISIANA... As of 12:00 AM CDT Thu Aug 27 the center of Laura was located near 29.5, -93.3 with movement NNW at 15 mph. The minimum central pressure was 938 mb with maximum sustained winds of about 150 mph.
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Hurricane Laura Potential Storm Surge Flooding Map
2020-08-27 05:27:07| National Hurricane Center (Atlantic)
Potential Storm Surge Flooding Map last updated Thu, 27 Aug 2020 03:27:07 GMT
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