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Hurricane Lorenzo Forecast Discussion Number 26

2019-09-29 02:06:31| National Hurricane Center (Atlantic)

Issued at 800 PM AST Sat Sep 28 2019 000 WTNT43 KNHC 290006 TCDAT3 Hurricane Lorenzo Special Discussion Number 26 NWS National Hurricane Center Miami FL AL132019 800 PM AST Sat Sep 28 2019 The satellite presentation of Lorenzo has improved throughout this evening, and the ring of cloud tops surrounding the eye have become wider and colder. This has resulted in both subjective and objective satellite intensity estimates increasing to a 6.5 on the Dvorak scale, indicative of a 125 kt hurricane. Based on this data, a special advisory is being issued at this time to increase the initial intensity, and the 12-hour and 24-hour forecast wind speeds. No other changes were required to the previous track or intensity forecast. Key Messages: 1. Lorenzo is a large hurricane, and its hurricane- and tropical-storm-force wind fields are expected to expand further during the next several days. Regardless of Lorenzo's exact track near the Azores, strong winds are becoming increasingly likely on the islands Tuesday night and Wednesday, and residents there should monitor the progress of the hurricane. 2. Large swells generated by Lorenzo will continue to spread across much of the western and northern parts of the Atlantic basin during the next few days. These swells will produce life-threatening surf and rip currents. FORECAST POSITIONS AND MAX WINDS INIT 29/0000Z 23.8N 45.0W 125 KT 145 MPH 12H 29/0600Z 24.6N 44.8W 125 KT 145 MPH 24H 29/1800Z 26.3N 44.3W 110 KT 125 MPH 36H 30/0600Z 28.0N 43.7W 100 KT 115 MPH 48H 30/1800Z 29.7N 42.9W 95 KT 110 MPH 72H 01/1800Z 34.8N 38.0W 90 KT 105 MPH 96H 02/1800Z 42.5N 26.5W 75 KT 85 MPH 120H 03/1800Z 49.0N 13.0W 60 KT 70 MPH...POST-TROP/EXTRATROP $$ Forecaster Latto

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Hurricane Lorenzo Graphics

2019-09-29 02:04:24| National Hurricane Center (Atlantic)

5-Day Uncertainty Track last updated Sun, 29 Sep 2019 00:04:24 GMT Wind Speed Probabilities last updated Sun, 29 Sep 2019 00:04:24 GMT

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Summary for Hurricane Lorenzo (AT3/AL132019)

2019-09-29 02:02:25| National Hurricane Center (Atlantic)

...LORENZO HAS CONTINUED TO STRENGTHEN THIS EVENING... As of 8:00 PM AST Sat Sep 28 the center of Lorenzo was located near 23.8, -45.0 with movement N at 10 mph. The minimum central pressure was 942 mb with maximum sustained winds of about 145 mph.

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Hurricane Lorenzo Public Advisory Number 26

2019-09-29 02:02:25| National Hurricane Center (Atlantic)

Issued at 800 PM AST Sat Sep 28 2019 000 WTNT33 KNHC 290002 TCPAT3 BULLETIN Hurricane Lorenzo Special Advisory Number 26 NWS National Hurricane Center Miami FL AL132019 800 PM AST Sat Sep 28 2019 ...LORENZO HAS CONTINUED TO STRENGTHEN THIS EVENING... SUMMARY OF 800 PM AST...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...23.8N 45.0W ABOUT 1445 MI...2325 KM SW OF THE AZORES MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...N OR 5 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...942 MB...27.82 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Azores should monitor the progress of Lorenzo. DISCUSSION AND OUTLOOK ---------------------- At 800 PM AST (0000 UTC), the center of Hurricane Lorenzo was located near latitude 23.8 North, longitude 45.0 West. Lorenzo is moving toward the north near 10 mph (17 km/h), and this motion is expected to continue through tonight. A turn toward the north-northeast is forecast on Sunday, followed by a faster motion toward the northeast beginning Monday or Tuesday. On the forecast track, the center of Lorenzo will be approaching the Azores on Tuesday. Satellite data indicate that the maximum sustained winds have increased to near 145 mph (230 km/h) with higher gusts. Lorenzo is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Fluctuations in intensity are possible tonight and early Sunday. Lorenzo is expected to gradually weaken Sunday night through Tuesday, but it will remain a large and potent hurricane while it approaches the Azores. Lorenzo is a large hurricane. Hurricane-force winds extend outward up to 50 miles (85 km) from the center, and tropical-storm-force winds extend outward up to 275 miles (445 km). The estimated minimum central pressure is 942 mb (27.82 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Lorenzo are affecting portions of the northeastern coast of South America and the Lesser Antilles and are expected to spread westward to portions of the north coasts of the Greater Antilles, the Bahamas, Bermuda, and the east coast of the United States during the next few days. Swells are also expected to build near the Azores on Sunday and Monday. 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 1100 PM AST. $$ Forecaster Latto

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Hurricane Lorenzo Wind Speed Probabilities Number 26

2019-09-29 02:02:25| National Hurricane Center (Atlantic)

Issued at 0000 UTC SUN SEP 29 2019 000 FONT13 KNHC 290002 PWSAT3 HURRICANE LORENZO SPECIAL WIND SPEED PROBABILITIES NUMBER 26 NWS NATIONAL HURRICANE CENTER MIAMI FL AL132019 0000 UTC SUN SEP 29 2019 AT 0000Z THE CENTER OF HURRICANE LORENZO WAS LOCATED NEAR LATITUDE 23.8 NORTH...LONGITUDE 45.0 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 18Z 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 18Z SAT 06Z SUN 18Z SUN 06Z MON 18Z MON 18Z TUE 18Z WED PERIODS TO TO TO TO TO TO TO 06Z SUN 18Z SUN 06Z MON 18Z MON 18Z TUE 18Z WED 18Z THU FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT SANTA CRUZ AZO 34 X X( X) X( X) X( X) X( X) 85(85) 1(86) SANTA CRUZ AZO 50 X X( X) X( X) X( X) X( X) 52(52) X(52) SANTA CRUZ AZO 64 X X( X) X( X) X( X) X( X) 23(23) X(23) PONTA DELGADA 34 X X( X) X( X) X( X) X( X) 21(21) X(21) $$ FORECASTER LATTO

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