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Tropical Storm GASTON Public Advisory Number 15

2016-08-26 10:51:14| National Hurricane Center (Atlantic)

Issued at 500 AM AST FRI AUG 26 2016 000 WTNT32 KNHC 260851 TCPAT2 BULLETIN TROPICAL STORM GASTON ADVISORY NUMBER 15 NWS NATIONAL HURRICANE CENTER MIAMI FL AL072016 500 AM AST FRI AUG 26 2016 ...GASTON MOVING NORTHWESTWARD WITH NO CHANGE IN INTENSITY... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...23.9N 47.6W ABOUT 1030 MI...1660 KM ENE OF THE LEEWARD ISLANDS ABOUT 1195 MI...1925 KM ESE OF BERMUDA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...NW OR 320 DEGREES AT 17 MPH...28 KM/H MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 500 AM AST (0900 UTC), the center of Tropical Storm Gaston was located near latitude 23.9 North, longitude 47.6 West. Gaston is moving toward the northwest near 17 mph (28 km/h), and this general heading with a decrease in forward speed is expected during the next couple of days. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Strengthening is forecast during the next 48 hours, and Gaston could reintensify to a hurricane by tonight or on Saturday. Tropical-storm-force winds extend outward up to 125 miles (205 km) from the center. The estimated minimum central pressure is 997 mb (29.44 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Berg

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Tropical Storm GASTON Wind Speed Probabilities Number 15

2016-08-26 10:51:12| National Hurricane Center (Atlantic)

Issued at 0900 UTC FRI AUG 26 2016 000 FONT12 KNHC 260851 PWSAT2 TROPICAL STORM GASTON WIND SPEED PROBABILITIES NUMBER 15 NWS NATIONAL HURRICANE CENTER MIAMI FL AL072016 0900 UTC FRI AUG 26 2016 AT 0900Z THE CENTER OF TROPICAL STORM GASTON WAS LOCATED NEAR LATITUDE 23.9 NORTH...LONGITUDE 47.6 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 55 KTS...65 MPH...100 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 06Z FRI 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 64 KT ARE SHOWN WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 06Z FRI 18Z FRI 06Z SAT 18Z SAT 06Z SUN 06Z MON 06Z TUE PERIODS TO TO TO TO TO TO TO 18Z FRI 06Z SAT 18Z SAT 06Z SUN 06Z MON 06Z TUE 06Z WED FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT BERMUDA 34 X X( X) X( X) X( X) 2( 2) 3( 5) 1( 6) $$ FORECASTER BERG

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Tropical Storm GASTON Forecast Advisory Number 15

2016-08-26 10:50:50| National Hurricane Center (Atlantic)

Issued at 0900 UTC FRI AUG 26 2016 000 WTNT22 KNHC 260850 TCMAT2 TROPICAL STORM GASTON FORECAST/ADVISORY NUMBER 15 NWS NATIONAL HURRICANE CENTER MIAMI FL AL072016 0900 UTC FRI AUG 26 2016 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 23.9N 47.6W AT 26/0900Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 320 DEGREES AT 15 KT ESTIMATED MINIMUM CENTRAL PRESSURE 997 MB MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT. 50 KT....... 70NE 30SE 0SW 60NW. 34 KT.......110NE 80SE 30SW 100NW. 12 FT SEAS..210NE 150SE 150SW 150NW. 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 23.9N 47.6W AT 26/0900Z AT 26/0600Z CENTER WAS LOCATED NEAR 23.4N 47.0W FORECAST VALID 26/1800Z 25.5N 49.5W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 70NE 40SE 0SW 60NW. 34 KT...120NE 80SE 40SW 110NW. FORECAST VALID 27/0600Z 27.0N 52.1W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 25NE 0SE 0SW 0NW. 50 KT... 60NE 40SE 20SW 60NW. 34 KT...120NE 90SE 50SW 110NW. FORECAST VALID 27/1800Z 28.2N 54.2W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 25NE 20SE 0SW 20NW. 50 KT... 60NE 50SE 30SW 60NW. 34 KT...130NE 100SE 70SW 110NW. FORECAST VALID 28/0600Z 29.2N 55.7W MAX WIND 85 KT...GUSTS 105 KT. 50 KT... 70NE 60SE 40SW 60NW. 34 KT...130NE 120SE 90SW 120NW. FORECAST VALID 29/0600Z 30.8N 57.1W MAX WIND 95 KT...GUSTS 115 KT. 50 KT... 80NE 70SE 60SW 70NW. 34 KT...140NE 130SE 100SW 120NW. 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 30/0600Z 32.2N 55.8W MAX WIND 95 KT...GUSTS 115 KT. OUTLOOK VALID 31/0600Z 34.0N 51.5W MAX WIND 90 KT...GUSTS 110 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.9N 47.6W NEXT ADVISORY AT 26/1500Z $$ FORECASTER BERG

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Tropical Storm GASTON Graphics

2016-08-26 04:45:22| National Hurricane Center (Atlantic)

5-Day Uncertainty Track last updated Fri, 26 Aug 2016 02:45:22 GMT Wind Speed Probabilities last updated Fri, 26 Aug 2016 02:44:35 GMT

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Summary for Tropical Storm GASTON (AT2/AL072016)

2016-08-26 04:45:00| National Hurricane Center (Atlantic)

...GASTON EXPECTED TO BECOME A HURRICANE AGAIN OVER THE WEEKEND... As of 11:00 PM AST Thu Aug 25 the center of GASTON was located near 22.8, -46.4 with movement NW at 17 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 65 mph.

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