je.st

Home › hurricane

Tag: hurricane

Summary for Hurricane Sam (AT3/AL182021)

2021-09-26 10:47:14| National Hurricane Center (Atlantic)

...SAM REMAINS A CATEGORY FOUR HURRICANE... ...FLUCTUATIONS IN INTENSITY LIKELY DURING THE NEXT DAY OR SO... As of 5:00 AM AST Sun Sep 26 the center of Sam was located near 13.8, -49.7 with movement WNW at 8 mph. The minimum central pressure was 943 mb with maximum sustained winds of about 145 mph.

Tags: summary sam hurricane

Hurricane Sam Public Advisory Number 15

2021-09-26 10:47:14| National Hurricane Center (Atlantic)

Issued at 500 AM AST Sun Sep 26 2021 000 WTNT33 KNHC 260847 TCPAT3 BULLETIN Hurricane Sam Advisory Number 15 NWS National Hurricane Center Miami FL AL182021 500 AM AST Sun Sep 26 2021 ...SAM REMAINS A CATEGORY FOUR HURRICANE... ...FLUCTUATIONS IN INTENSITY LIKELY DURING THE NEXT DAY OR SO... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...13.8N 49.7W ABOUT 940 MI...1510 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 AM AST (0900 UTC), the center of Hurricane Sam was located near latitude 13.8 North, longitude 49.7 West. Sam is moving toward the west-northwest near 8 mph (13 km/h). This general motion is expected to continue today, followed by a turn toward the northwest on Monday. Then, a northwestward motion is forecast to continue through midweek. Maximum sustained winds are near 145 mph (230 km/h) with higher gusts. Sam is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are expected during the next day or so. Thereafter, some slow weakening is forecast. Sam is a small hurricane. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The estimated minimum central pressure is 943 mb (27.85 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Sam are forecast to reach the Lesser Antilles early this week. These swells could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Reinhart

Tags: number public sam advisory

Hurricane Sam Wind Speed Probabilities Number 15

2021-09-26 10:47:14| National Hurricane Center (Atlantic)

Issued at 0900 UTC SUN SEP 26 2021 000 FONT13 KNHC 260847 PWSAT3 HURRICANE SAM WIND SPEED PROBABILITIES NUMBER 15 NWS NATIONAL HURRICANE CENTER MIAMI FL AL182021 0900 UTC SUN SEP 26 2021 AT 0900Z THE CENTER OF HURRICANE SAM WAS LOCATED NEAR LATITUDE 13.8 NORTH...LONGITUDE 49.7 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 125 KTS...145 MPH...230 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 SUN 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 06Z SUN 18Z SUN 06Z MON 18Z MON 06Z TUE 06Z WED 06Z THU PERIODS TO TO TO TO TO TO TO 18Z SUN 06Z MON 18Z MON 06Z TUE 06Z WED 06Z THU 06Z FRI FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT VIEQUES PR 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) SAINT THOMAS 34 X X( X) X( X) X( X) X( X) 2( 2) 2( 4) SAINT CROIX 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) SAINT MAARTEN 34 X X( X) X( X) X( X) 1( 1) 6( 7) 4(11) SAINT MAARTEN 50 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) SABA 34 X X( X) X( X) X( X) 1( 1) 4( 5) 2( 7) ST EUSTATIUS 34 X X( X) X( X) X( X) 1( 1) 5( 6) 2( 8) ST KITTS-NEVIS 34 X X( X) X( X) X( X) 1( 1) 6( 7) 1( 8) BARBUDA 34 X X( X) X( X) X( X) 1( 1) 10(11) 3(14) BARBUDA 50 X X( X) X( X) X( X) X( X) 3( 3) X( 3) BARBUDA 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) ANTIGUA 34 X X( X) X( X) X( X) 1( 1) 9(10) 1(11) ANTIGUA 50 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) ANTIGUA 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) GUADELOUPE 34 X X( X) X( X) X( X) 2( 2) 5( 7) 1( 8) DOMINICA 34 X X( X) X( X) X( X) 1( 1) 4( 5) X( 5) MARTINIQUE 34 X X( X) X( X) X( X) 1( 1) 2( 3) X( 3) $$ FORECASTER REINHART

Tags: number speed sam wind

Hurricane Sam Forecast Advisory Number 15

2021-09-26 10:46:43| National Hurricane Center (Atlantic)

Issued at 0900 UTC SUN SEP 26 2021 207 WTNT23 KNHC 260846 TCMAT3 HURRICANE SAM FORECAST/ADVISORY NUMBER 15 NWS NATIONAL HURRICANE CENTER MIAMI FL AL182021 0900 UTC SUN SEP 26 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. HURRICANE CENTER LOCATED NEAR 13.8N 49.7W AT 26/0900Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 7 KT ESTIMATED MINIMUM CENTRAL PRESSURE 943 MB EYE DIAMETER 10 NM MAX SUSTAINED WINDS 125 KT WITH GUSTS TO 150 KT. 64 KT....... 25NE 20SE 15SW 20NW. 50 KT....... 40NE 30SE 20SW 30NW. 34 KT....... 80NE 80SE 40SW 60NW. 12 FT SEAS..150NE 90SE 120SW 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 13.8N 49.7W AT 26/0900Z AT 26/0600Z CENTER WAS LOCATED NEAR 13.7N 49.4W FORECAST VALID 26/1800Z 14.3N 50.6W MAX WIND 125 KT...GUSTS 150 KT. 64 KT... 25NE 20SE 15SW 20NW. 50 KT... 40NE 30SE 20SW 30NW. 34 KT... 90NE 80SE 40SW 70NW. FORECAST VALID 27/0600Z 15.0N 51.8W MAX WIND 120 KT...GUSTS 145 KT. 64 KT... 25NE 20SE 15SW 20NW. 50 KT... 50NE 40SE 30SW 40NW. 34 KT... 90NE 80SE 50SW 70NW. FORECAST VALID 27/1800Z 15.8N 52.9W MAX WIND 120 KT...GUSTS 145 KT. 64 KT... 30NE 25SE 20SW 25NW. 50 KT... 50NE 40SE 30SW 40NW. 34 KT... 90NE 90SE 60SW 80NW. FORECAST VALID 28/0600Z 16.6N 53.9W MAX WIND 115 KT...GUSTS 140 KT. 64 KT... 35NE 30SE 25SW 25NW. 50 KT... 50NE 40SE 30SW 40NW. 34 KT... 90NE 90SE 70SW 80NW. FORECAST VALID 28/1800Z 17.5N 55.0W MAX WIND 115 KT...GUSTS 140 KT. 50 KT... 50NE 50SE 40SW 40NW. 34 KT...100NE 90SE 70SW 80NW. FORECAST VALID 29/0600Z 18.4N 56.3W MAX WIND 115 KT...GUSTS 140 KT. 50 KT... 60NE 50SE 40SW 40NW. 34 KT...100NE 90SE 70SW 90NW. 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 30/0600Z 20.8N 59.3W MAX WIND 110 KT...GUSTS 135 KT. OUTLOOK VALID 01/0600Z 24.5N 62.0W MAX WIND 110 KT...GUSTS 135 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 13.8N 49.7W NEXT ADVISORY AT 26/1500Z $$ FORECASTER REINHART

Tags: number sam advisory forecast