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Tropical Storm Harvey Storm Surge Watch/Warning Map
2017-08-30 16:48:34| National Hurricane Center (Atlantic)
Storm Surge Watch/Warning Map last updated Wed, 30 Aug 2017 14:48:34 GMT
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Tropical Storm Harvey Wind Speed Probabilities Number 41
2017-08-30 16:48:19| National Hurricane Center (Atlantic)
Issued at 1500 UTC WED AUG 30 2017 000 FONT14 KNHC 301448 PWSAT4 TROPICAL STORM HARVEY WIND SPEED PROBABILITIES NUMBER 41 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092017 1500 UTC WED AUG 30 2017 AT 1500Z THE CENTER OF TROPICAL STORM HARVEY WAS LOCATED NEAR LATITUDE 30.5 NORTH...LONGITUDE 93.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 40 KTS...45 MPH...75 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 12Z WED AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 12Z WED 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN PERIODS TO TO TO TO TO TO TO 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN 12Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT JACKSON MS 34 1 6( 7) 2( 9) X( 9) X( 9) X( 9) X( 9) BATON ROUGE LA 34 6 1( 7) X( 7) X( 7) X( 7) X( 7) X( 7) MORGAN CITY LA 34 3 X( 3) X( 3) X( 3) X( 3) X( 3) X( 3) ALEXANDRIA LA 34 56 2(58) X(58) X(58) X(58) X(58) X(58) LAFAYETTE LA 34 19 X(19) X(19) X(19) X(19) X(19) X(19) NEW IBERIA LA 34 9 1(10) X(10) X(10) X(10) X(10) X(10) SHREVEPORT LA 34 2 1( 3) X( 3) X( 3) X( 3) X( 3) X( 3) FORT POLK LA 34 41 X(41) X(41) X(41) X(41) X(41) X(41) LAKE CHARLES 34 95 X(95) X(95) X(95) X(95) X(95) X(95) CAMERON LA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) JASPER TX 34 13 X(13) X(13) X(13) X(13) X(13) X(13) KOUNTZE TX 34 26 X(26) X(26) X(26) X(26) X(26) X(26) PORT ARTHUR TX 34 99 X(99) X(99) X(99) X(99) X(99) X(99) $$ FORECASTER BEVEN
Summary for Tropical Storm Harvey (AT4/AL092017)
2017-08-30 16:47:48| National Hurricane Center (Atlantic)
...CENTER OF HARVEY MOVING FARTHER INLAND OVER SOUTHWESTERN LOUISIANA... ...FLOODING RAINS CONTINUING OVER EXTREME SOUTHEASTERN TEXAS AND SOUTHWESTERN LOUISIANA... As of 10:00 AM CDT Wed Aug 30 the center of Harvey was located near 30.5, -93.3 with movement NNE at 8 mph. The minimum central pressure was 993 mb with maximum sustained winds of about 45 mph.
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Summary for Tropical Storm Harvey (AT4/AL092017)
2017-08-30 13:48:18| National Hurricane Center (Atlantic)
...CENTER OF HARVEY OVER SOUTHWESTERN LOUISIANA... ...FLOODING RAINS CONTINUING OVER EXTREME SOUTHEASTERN TEXAS AND SOUTHWESTERN LOUISIANA... As of 7:00 AM CDT Wed Aug 30 the center of Harvey was located near 30.2, -93.6 with movement N at 9 mph. The minimum central pressure was 992 mb with maximum sustained winds of about 45 mph.
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Tropical Storm Harvey Public Advisory Number 40A
2017-08-30 13:48:18| National Hurricane Center (Atlantic)
Issued at 700 AM CDT Wed Aug 30 2017 000 WTNT34 KNHC 301148 TCPAT4 BULLETIN Tropical Storm Harvey Intermediate Advisory Number 40A NWS National Hurricane Center Miami FL AL092017 700 AM CDT Wed Aug 30 2017 ...CENTER OF HARVEY OVER SOUTHWESTERN LOUISIANA... ...FLOODING RAINS CONTINUING OVER EXTREME SOUTHEASTERN TEXAS AND SOUTHWESTERN LOUISIANA... SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...30.2N 93.6W ABOUT 25 MI...40 KM WNW OF LAKE CHARLES LOUISIANA ABOUT 30 MI...50 KM NE OF PORT ARTHUR TEXAS MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...N OR 360 DEGREES AT 9 MPH...14 KM/H MINIMUM CENTRAL PRESSURE...992 MB...29.29 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Holly Beach Louisiana to Morgan City Louisiana A Storm Surge Watch is in effect for... * East of High Island Texas to west of Holly Beach Louisiana A Tropical Storm Warning is in effect for... * East of High Island Texas to Grand Isle Louisiana Catastrophic and life-threatening flooding continues in southeastern Texas and portions of southwestern Louisiana. Please see warnings and other products issued by your local National Weather Service office for additional information on this life-threatening situation. A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 12 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. 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 48-HOUR OUTLOOK ------------------------------ At 700 AM CDT (1200 UTC), the center of Tropical Storm Harvey was located over southwestern Louisiana near latitude 30.2 North, longitude 93.6 West. Harvey has been moving toward the north at about 9 mph (14 km/h) for the past several hours. The storm is expected to move north-northeastward later this morning, and then a northeastward motion at a faster forward speed is expected through Thursday night. On the forecast track, the center of Harvey will move across the Lower Mississippi Valley and Tennessee Valley through Thursday. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Gradual weakening is forecast as the center moves farther inland, and Harvey is expected to become a tropical depression by tonight. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. A National Ocean Service station at Texas Point, Texas, recently reported a wind gust of 42 mph (68 km/h), while the Orange County Airport in Orange, Texas recently reported a wind gust of 41 mph (66 km/h). The estimated minimum central pressure based on surface observations is 992 mb (29.29 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Harvey is expected to produce additional rainfall accumulations of 3 to 6 inches from southwestern Louisiana and the adjacent border of eastern Texas northeastward into western Kentucky through Friday with isolated amounts up to 10 inches. While the threat of heavy rains has ended in the Houston/Galveston area, catastrophic and life-threatening flooding will continue in and around Houston eastward into southwest Louisiana for the rest of the week. The expected heavy rains spreading northeastward from Louisiana into western Kentucky may also lead to flash flooding and increased river and small stream flooding. DO NOT ATTEMPT TO TRAVEL IN THE AFFECTED AREA IF YOU ARE IN A SAFE PLACE. DO NOT DRIVE INTO FLOODED ROADWAYS. Please see warnings and products issued by your local National Weather Service office for additional information on this life-threatening situation. Elsewhere, the outer bands of Harvey are expected to produce additional rainfall amounts of 3 to 6 inches over portions of the central and eastern Gulf States and 2 to 4 inches farther north into parts of the Tennessee Valley through Friday. These rains may lead to flooding concerns across these areas. A list of rainfall observations compiled by the NOAA Weather Prediction Center can be found at: www.wpc.ncep.noaa.gov/discussions/nfdscc1.html 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 is expected to reach the following heights above ground if the peak surge occurs at the time of high tide... Holly Beach to Morgan City...2 to 4 ft San Luis Pass to west of Holly Beach incl. Galveston Bay...1 to 3 ft Morgan City to Grand Isle...1 to 2 ft The deepest water will occur along the immediate coast near the area of onshore winds. 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: Tropical storm conditions are occurring over portions of the warning area along the coast and are likely to persist through today. SURF: Swells generated by Harvey are still affecting the coasts of Texas and Louisiana. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: A few tornadoes are possible today and tonight over parts of Louisiana, Mississippi, southern Alabama, and southeast Arkansas. NEXT ADVISORY ------------- Next complete advisory at 1000 AM CDT. $$ Forecaster Beven
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