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Hurricane Harvey Public Advisory Number 25

2017-08-26 16:51:50| National Hurricane Center (Atlantic)

Issued at 1000 AM CDT Sat Aug 26 2017 000 WTNT34 KNHC 261451 TCPAT4 BULLETIN Hurricane Harvey Advisory Number 25 NWS National Hurricane Center Miami FL AL092017 1000 AM CDT Sat Aug 26 2017 ...HARVEY DRENCHING TEXAS... ...TORRENTIAL RAINS WILL CONTINUE FOR A FEW MORE DAYS... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...28.9N 97.3W ABOUT 25 MI...35 KM W OF VICTORIA TEXAS ABOUT 80 MI...130 KM ESE OF SAN ANTONIO TEXAS MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...N OR 350 DEGREES AT 2 MPH...4 KM/H MINIMUM CENTRAL PRESSURE...984 MB...29.06 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Storm Surge Warning for the Texas coast south of Port Aransas has been discontinued. The Hurricane Warning for the Texas coast has been replaced with a Tropical Storm Warning. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Port Aransas to High Island Texas A Tropical Storm Warning is in effect for... * Baffin Bay to High Island Texas Hurricane warnings continue for inland areas near the center of Harvey. Please see products from your local National Weather Service office. 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. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning. 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 1000 AM CDT (1500 UTC), the center of Hurricane Harvey was located near latitude 28.9 North, longitude 97.3 West. Harvey is moving slowly toward the north near 2 mph (4 km/h), and little motion is anticipated during the next several days. Maximum sustained winds have decreased to near 75 mph (120 km/h) with higher gusts. These winds are confined to a small area near the center. Weakening is forecast during the next 48 hours, and Harvey is expected to become a tropical storm this afternoon. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). The estimated minimum central pressure is 984 mb (29.06 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Harvey is expected to produce total rain accumulations of 15 to 30 inches and isolated maximum amounts of 40 inches over the middle and upper Texas coast through Thursday. During the same time period Harvey is expected to produce total rain accumulations of 5 to 15 inches in far south Texas, the Texas Hill Country and southwest and central Louisiana. Rainfall of this magnitude will cause catastrophic and life-threatening flooding. 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... Port Aransas to Sargent...4 to 7 ft Sargent to High Island including Galveston Bay...2 to 4 ft High Island to Morgan City...1 to 3 ft The deepest water will occur along the immediate coast near the area of onshore winds, where the surge will be accompanied by large and destructive 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 occuring inland near the core of Harvey. Tropical storm conditions are occurring in portions of the tropical storm warning area, and are likely to persist along portions of the coast through at least Sunday. SURF: Swells generated by Harvey are affecting the Texas, Louisiana, and northeast Mexico coasts. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: Tornadoes are possible today and tonight near the middle and upper Texas coast into far southwest Louisiana. NEXT ADVISORY ------------- Next intermediate advisory at 100 PM CDT. Next complete advisory at 400 PM CDT. $$ Forecaster Avila/Lapenta

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Hurricane Harvey Wind Speed Probabilities Number 25

2017-08-26 16:51:50| National Hurricane Center (Atlantic)

Issued at 1500 UTC SAT AUG 26 2017 000 FONT14 KNHC 261451 PWSAT4 HURRICANE HARVEY WIND SPEED PROBABILITIES NUMBER 25 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092017 1500 UTC SAT AUG 26 2017 AT 1500Z THE CENTER OF HURRICANE HARVEY WAS LOCATED NEAR LATITUDE 28.9 NORTH...LONGITUDE 97.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 65 KTS...75 MPH...120 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 SAT 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 SAT 00Z SUN 12Z SUN 00Z MON 12Z MON 12Z TUE 12Z WED PERIODS TO TO TO TO TO TO TO 00Z SUN 12Z SUN 00Z MON 12Z MON 12Z TUE 12Z WED 12Z THU FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT ALEXANDRIA LA 34 X 1( 1) X( 1) X( 1) 1( 2) 1( 3) 1( 4) LAFAYETTE LA 34 X 1( 1) X( 1) X( 1) 1( 2) 1( 3) 1( 4) NEW IBERIA LA 34 X 1( 1) X( 1) X( 1) 1( 2) 1( 3) 1( 4) GFMX 280N 930W 34 X 1( 1) X( 1) 1( 2) 1( 3) 2( 5) 1( 6) SHREVEPORT LA 34 1 X( 1) X( 1) 1( 2) X( 2) 2( 4) 2( 6) FORT POLK LA 34 1 X( 1) 1( 2) X( 2) 1( 3) 2( 5) 2( 7) LAKE CHARLES 34 1 X( 1) 1( 2) X( 2) 2( 4) 3( 7) 1( 8) CAMERON LA 34 1 X( 1) 1( 2) X( 2) 2( 4) 3( 7) 2( 9) JASPER TX 34 1 1( 2) X( 2) 1( 3) 2( 5) 2( 7) 2( 9) KOUNTZE TX 34 1 1( 2) X( 2) 1( 3) 3( 6) 4(10) 2(12) PORT ARTHUR TX 34 1 1( 2) X( 2) 1( 3) 3( 6) 3( 9) 2(11) GALVESTON TX 34 2 1( 3) 1( 4) 2( 6) 5(11) 4(15) 2(17) HOUSTON TX 34 5 3( 8) 3(11) 4(15) 4(19) 3(22) 2(24) AUSTIN TX 34 16 18(34) 8(42) 3(45) 2(47) 1(48) X(48) AUSTIN TX 50 X 2( 2) X( 2) 1( 3) X( 3) 1( 4) 1( 5) SAN ANTONIO TX 34 17 20(37) 10(47) 2(49) 1(50) 1(51) 1(52) SAN ANTONIO TX 50 X 3( 3) 2( 5) X( 5) 1( 6) X( 6) 1( 7) FREEPORT TX 34 6 4(10) 3(13) 5(18) 4(22) 2(24) 2(26) FREEPORT TX 50 X X( X) X( X) 1( 1) 1( 2) 1( 3) X( 3) GFMX 280N 950W 34 1 1( 2) 2( 4) 2( 6) 5(11) 3(14) X(14) HIGH ISLAND TX 34 1 1( 2) 1( 3) 1( 4) 3( 7) 5(12) 2(14) MATAGORDA TX 34 99 X(99) X(99) X(99) X(99) X(99) X(99) MATAGORDA TX 50 X 1( 1) X( 1) 1( 2) 2( 4) X( 4) 1( 5) PORT O CONNOR 34 99 X(99) X(99) X(99) X(99) X(99) X(99) PORT O CONNOR 50 1 X( 1) 1( 2) 2( 4) 1( 5) X( 5) 1( 6) PORT O CONNOR 64 X X( X) X( X) 1( 1) X( 1) X( 1) X( 1) ROCKPORT TX 34 99 X(99) X(99) X(99) X(99) X(99) X(99) ROCKPORT TX 50 1 1( 2) 1( 3) 1( 4) 1( 5) 1( 6) X( 6) CORPUS CHRISTI 34 99 X(99) X(99) X(99) X(99) X(99) X(99) CORPUS CHRISTI 50 X 1( 1) 1( 2) 1( 3) 1( 4) X( 4) X( 4) GFMX 270N 960W 34 1 1( 2) 2( 4) 3( 7) 5(12) 2(14) 1(15) MCALLEN TX 34 1 X( 1) 1( 2) 2( 4) 2( 6) 1( 7) 1( 8) HARLINGEN TX 34 1 1( 2) X( 2) 2( 4) 3( 7) 1( 8) 1( 9) BROWNSVILLE TX 34 1 X( 1) 1( 2) 1( 3) 3( 6) 1( 7) 1( 8) GFMX 250N 960W 34 X 1( 1) X( 1) X( 1) 2( 3) X( 3) 1( 4) $$ FORECASTER AVILA

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Hurricane Harvey Storm Surge Watch/Warning Map

2017-08-26 16:51:48| National Hurricane Center (Atlantic)

Storm Surge Watch/Warning Map last updated Sat, 26 Aug 2017 14:51:48 GMT

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Hurricane Harvey Forecast Advisory Number 25

2017-08-26 16:50:50| National Hurricane Center (Atlantic)

Issued at 1500 UTC SAT AUG 26 2017 000 WTNT24 KNHC 261450 TCMAT4 HURRICANE HARVEY FORECAST/ADVISORY NUMBER 25 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092017 1500 UTC SAT AUG 26 2017 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE STORM SURGE WARNING FOR THE TEXAS COAST SOUTH OF PORT ARANSAS HAS BEEN DISCONTINUED. THE HURRICANE WARNING FOR THE TEXAS COAST HAS BEEN REPLACED WITH A TROPICAL STORM WARNING. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * PORT ARANSAS TO HIGH ISLAND TEXAS A TROPICAL STORM WARNING IS IN EFFECT FOR... * BAFFIN BAY TO HIGH ISLAND TEXAS HURRICANE WARNINGS CONTINUE FOR INLAND AREAS NEAR THE CENTER OF HARVEY. PLEASE SEE PRODUCTS FROM YOUR LOCAL NATIONAL WEATHER SERVICE OFFICE. 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. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING. HURRICANE CENTER LOCATED NEAR 28.9N 97.3W AT 26/1500Z POSITION ACCURATE WITHIN 10 NM PRESENT MOVEMENT TOWARD THE NORTH OR 350 DEGREES AT 2 KT ESTIMATED MINIMUM CENTRAL PRESSURE 984 MB MAX SUSTAINED WINDS 65 KT WITH GUSTS TO 80 KT. 64 KT....... 20NE 20SE 20SW 20NW. 50 KT....... 50NE 50SE 30SW 40NW. 34 KT.......120NE 100SE 70SW 70NW. 12 FT SEAS..150NE 120SE 0SW 0NW. 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 28.9N 97.3W AT 26/1500Z AT 26/1200Z CENTER WAS LOCATED NEAR 28.7N 97.2W FORECAST VALID 27/0000Z 29.1N 97.4W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT...100NE 100SE 50SW 50NW. FORECAST VALID 27/1200Z 29.2N 97.5W...INLAND MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 70NE 80SE 30SW 30NW. FORECAST VALID 28/0000Z 29.0N 97.5W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 70NE 80SE 30SW 30NW. FORECAST VALID 28/1200Z 28.7N 97.0W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 29/1200Z 28.7N 96.7W...INLAND MAX WIND 30 KT...GUSTS 40 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 30/1200Z 29.5N 96.7W...INLAND MAX WIND 30 KT...GUSTS 40 KT. OUTLOOK VALID 31/1200Z 30.5N 96.5W...INLAND MAX WIND 30 KT...GUSTS 40 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 28.9N 97.3W NEXT ADVISORY AT 26/2100Z $$ FORECASTER AVILA/LAPENTA

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Summary for Hurricane Harvey (AT4/AL092017)

2017-08-26 15:57:03| National Hurricane Center (Atlantic)

...HARVEY DRENCHING TEXAS... ...TORRENTIAL RAINS WILL CONTINUE FOR A FEW MORE DAYS... As of 10:00 AM CDT Sat Aug 26 the center of Harvey was located near 28.9, -97.3 with movement N at 2 mph. The minimum central pressure was 984 mb with maximum sustained winds of about 75 mph.

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