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Tropical Depression Fifteen-E Forecast Advisory Number 1
2021-09-07 22:40:19| National Hurricane Center (East Pacific)
Issued at 2100 UTC TUE SEP 07 2021 000 WTPZ25 KNHC 072040 TCMEP5 TROPICAL DEPRESSION FIFTEEN-E FORECAST/ADVISORY NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL EP152021 2100 UTC TUE SEP 07 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 18.2N 107.9W AT 07/2100Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 4 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 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 18.2N 107.9W AT 07/2100Z AT 07/1800Z CENTER WAS LOCATED NEAR 18.1N 107.8W FORECAST VALID 08/0600Z 18.4N 108.1W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 50NE 40SE 0SW 0NW. FORECAST VALID 08/1800Z 19.0N 108.6W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 60NE 50SE 0SW 40NW. FORECAST VALID 09/0600Z 20.0N 109.3W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 20NE 0SE 0SW 0NW. 34 KT... 70NE 50SE 40SW 50NW. FORECAST VALID 09/1800Z 21.1N 110.5W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 15NE 0SE 0SW 0NW. 50 KT... 30NE 20SE 0SW 0NW. 34 KT... 80NE 50SE 40SW 60NW. FORECAST VALID 10/0600Z 22.4N 112.0W MAX WIND 65 KT...GUSTS 80 KT. 50 KT... 30NE 20SE 0SW 30NW. 34 KT... 80NE 50SE 40SW 60NW. FORECAST VALID 10/1800Z 23.4N 113.7W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 20SE 0SW 30NW. 34 KT... 70NE 60SE 50SW 60NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 11/1800Z 24.5N 116.5W MAX WIND 40 KT...GUSTS 50 KT. OUTLOOK VALID 12/1800Z 24.5N 118.9W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.2N 107.9W NEXT ADVISORY AT 08/0300Z $$ FORECASTER LATTO
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Hurricane Larry Public Advisory Number 28A
2021-09-07 19:48:10| National Hurricane Center (Atlantic)
Issued at 200 PM AST Tue Sep 07 2021 625 WTNT32 KNHC 071748 TCPAT2 BULLETIN Hurricane Larry Intermediate Advisory Number 28A NWS National Hurricane Center Miami FL AL122021 200 PM AST Tue Sep 07 2021 ...LARGE LARRY EXPECTED TO CAUSE DANGEROUS SWELLS OVER THE WESTERN ATLANTIC COAST THIS WEEK... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...24.8N 55.8W ABOUT 750 MI...1210 KM SE OF BERMUDA MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H PRESENT MOVEMENT...NW OR 320 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...967 MB...28.56 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Watch is in effect for... * Bermuda A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 PM AST (1800 UTC), the center of Hurricane Larry was located near latitude 24.8 North, longitude 55.8 West. Larry is moving toward the northwest near 9 mph (15 km/h), and this general motion is expected to continue through Wednesday. A turn toward the north-northwest and north with an increase in forward speed is forecast on Thursday. On the forecast track, the center of Larry should pass east of Bermuda on Thursday. Maximum sustained winds are near 115 mph (185 km/h) with higher gusts. Gradual weakening is forecast during the next several days. Larry is a large hurricane. Hurricane-force winds extend outward up to 70 miles (110 km) from the center and tropical-storm-force winds extend outward up to 185 miles (295 km). The estimated minimum central pressure is 967 mb (28.56 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Larry can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC. WIND: Tropical storm conditions are possible on Bermuda beginning late Wednesday or early Thursday. SURF: Swells generated by Larry will continue to affect the Lesser Antilles, portions of the Greater Antilles, and the Bahamas through midweek, and impact Bermuda through the end of the week. Significant swells should reach the east coast of the United States and Atlantic Canada by midweek and continue affecting these shores through the end of the week. 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 500 PM AST. $$ Forecaster Pasch
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Hurricane Larry Public Advisory Number 28
2021-09-07 16:59:38| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Tue Sep 07 2021 000 WTNT32 KNHC 071459 TCPAT2 BULLETIN Hurricane Larry Advisory Number 28 NWS National Hurricane Center Miami FL AL122021 1100 AM AST Tue Sep 07 2021 ...TROPICAL STORM WATCH ISSUED FOR BERMUDA... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...24.4N 55.6W ABOUT 780 MI...1255 KM SE OF BERMUDA MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...967 MB...28.56 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Bermuda Weather Service has issued a Tropical Storm Watch for Bermuda. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Watch is in effect for... * Bermuda A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Hurricane Larry was located near latitude 24.4 North, longitude 55.6 West. Larry is moving toward the northwest near 9 mph (15 km/h), and this general motion is expected to continue through Wednesday. A turn toward the north-northwest and north with an increase in forward speed is forecast on Thursday. On the forecast track, the center of Larry should pass east of Bermuda on Thursday. Maximum sustained winds are near 115 mph (185 km/h) with higher gusts. Gradual weakening is forecast during the next several days. Larry is a large hurricane. Hurricane-force winds extend outward up to 70 miles (110 km) from the center and tropical-storm-force winds extend outward up to 185 miles (295 km). The minimum central pressure estimated from Air Force Hurricane Hunter observations is 967 mb (28.56 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Larry can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC. WIND: Tropical storm conditions are possible on Bermuda beginning late Wednesday or early Thursday. SURF: Swells generated by Larry will continue to affect the Lesser Antilles, portions of the Greater Antilles, and the Bahamas through midweek, and impact Bermuda through the end of the week. Significant swells should reach the east coast of the United States and Atlantic Canada by midweek and continue affecting these shores through the end of the week. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 200 PM AST. Next complete advisory at 500 PM AST. $$ Forecaster Pasch
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Hurricane Larry Forecast Discussion Number 28
2021-09-07 16:59:38| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Tue Sep 07 2021 000 WTNT42 KNHC 071459 TCDAT2 Hurricane Larry Discussion Number 28 NWS National Hurricane Center Miami FL AL122021 1100 AM AST Tue Sep 07 2021 An Air Force Reserve Unit Hurricane Hunter aircraft investigated Larry a little while ago and found that the hurricane has weakened somewhat. The central pressure has risen to 967 mb, and the eyewall is becoming less well defined. Satellite imagery shows that the eye is still evident but the deep convection has has decreased in coverage and intensity. Using a blend of flight-level and SFMR-observed surface winds from the aircraft gives a current intensity estimate of 100 kt, although this may be generous. The hurricane continues to move northwestward, or 315/8 kt. Larry is forecast to move around the western periphery of a subtropical anticyclone during the next couple of days. By 72 hours, the system should begin to accelerate northeastward on the eastern side of a mid-tropospheric trough moving through the northeastern United States. Thereafter, Larry should be well-embedded in the higher-latitude southwesterly flow, pass near Newfoundland and move into the far North Atlantic as an extratropical cyclone. The official track forecast is essentially the same as the previous one and in very close agreement with the latest NOAA corrected consensus and Florida State University (FSU) Superensemble tracks. Larry is in a low-shear environment with fairly well-defined upper-level outflow. However dry mid-level air and possible upwelling of cooler waters beneath the slow-moving circulation appear to be at least partially responsible for weakening. Since the environment does not appear to be very hostile for the next couple of days, only slow weakening is anticipated. The official intensity forecast for the next 48-72 hours lies below the statistical dynamical Decay-SHIPS guidance and above the coupled- HWRF dynamical model prediction. By 96 hours, the FSU cyclone phase analysis indicates that Larry will have undergone an extratropical transition, and this is also shown in the official forecast. Larry is expected to pass east of Bermuda on Thursday as a large hurricane. Given the expansive size of Larry's wind field and forecast uncertainties, a Tropical Storm Watch has been issued for the island. Key Messages: 1. Large swells generated by Larry will continue to affect the Lesser Antilles, portions of the Greater Antilles, and the Bahamas through midweek. Significant swells should reach the east coast of the United States and Atlantic Canada by midweek and continue affecting these shores through the end of the week. These swells will likely cause life-threatening surf and rip current conditions, and beachgoers and other interests along these coasts are urged to follow the guidance of lifeguards and local officials this week. 2. The center of Larry is forecast to pass east of Bermuda on Thursday, but given Larry's large size, tropical storm conditions are possible there Thursday, along with a risk of heavy rainfall and coastal flooding. A Tropical Storm Watch is in effect for Bermuda and interests there should closely monitor the latest forecast updates. FORECAST POSITIONS AND MAX WINDS INIT 07/1500Z 24.4N 55.6W 100 KT 115 MPH 12H 08/0000Z 25.6N 56.6W 95 KT 110 MPH 24H 08/1200Z 27.3N 58.1W 90 KT 105 MPH 36H 09/0000Z 29.3N 59.9W 90 KT 105 MPH 48H 09/1200Z 31.8N 61.3W 90 KT 105 MPH 60H 10/0000Z 34.9N 61.8W 85 KT 100 MPH 72H 10/1200Z 39.0N 60.0W 80 KT 90 MPH 96H 11/1200Z 50.0N 50.0W 65 KT 75 MPH...POST-TROP/EXTRATROP 120H 12/1200Z 58.0N 42.0W 50 KT 60 MPH...POST-TROP/EXTRATROP $$ Forecaster Pasch
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Hurricane Larry Wind Speed Probabilities Number 28
2021-09-07 16:59:04| National Hurricane Center (Atlantic)
Issued at 1500 UTC TUE SEP 07 2021 000 FONT12 KNHC 071458 PWSAT2 HURRICANE LARRY WIND SPEED PROBABILITIES NUMBER 28 NWS NATIONAL HURRICANE CENTER MIAMI FL AL122021 1500 UTC TUE SEP 07 2021 AT 1500Z THE CENTER OF HURRICANE LARRY WAS LOCATED NEAR LATITUDE 24.4 NORTH...LONGITUDE 55.6 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 100 KTS...115 MPH...185 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 TUE 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 TUE 00Z WED 12Z WED 00Z THU 12Z THU 12Z FRI 12Z SAT PERIODS TO TO TO TO TO TO TO 00Z WED 12Z WED 00Z THU 12Z THU 12Z FRI 12Z SAT 12Z SUN FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT HIBERNIA OILFD 34 X X( X) X( X) X( X) X( X) 42(42) 2(44) HIBERNIA OILFD 50 X X( X) X( X) X( X) X( X) 11(11) 1(12) HIBERNIA OILFD 64 X X( X) X( X) X( X) X( X) 3( 3) 1( 4) CAPE RACE NFLD 34 X X( X) X( X) X( X) X( X) 62(62) 1(63) CAPE RACE NFLD 50 X X( X) X( X) X( X) X( X) 30(30) 1(31) CAPE RACE NFLD 64 X X( X) X( X) X( X) X( X) 10(10) X(10) ILE ST PIERRE 34 X X( X) X( X) X( X) X( X) 39(39) X(39) ILE ST PIERRE 50 X X( X) X( X) X( X) X( X) 18(18) X(18) ILE ST PIERRE 64 X X( X) X( X) X( X) X( X) 6( 6) X( 6) BURGEO NFLD 34 X X( X) X( X) X( X) X( X) 20(20) X(20) BURGEO NFLD 50 X X( X) X( X) X( X) X( X) 5( 5) X( 5) BURGEO NFLD 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) PTX BASQUES 34 X X( X) X( X) X( X) X( X) 11(11) X(11) EDDY POINT NS 34 X X( X) X( X) X( X) X( X) 5( 5) X( 5) SYDNEY NS 34 X X( X) X( X) X( X) X( X) 12(12) X(12) SABLE ISLAND 34 X X( X) X( X) X( X) 6( 6) 22(28) X(28) SABLE ISLAND 50 X X( X) X( X) X( X) 1( 1) 9(10) X(10) SABLE ISLAND 64 X X( X) X( X) X( X) X( X) 3( 3) X( 3) HALIFAX NS 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) BERMUDA 34 X X( X) 2( 2) 19(21) 9(30) X(30) X(30) BERMUDA 50 X X( X) X( X) 2( 2) 3( 5) 1( 6) X( 6) $$ FORECASTER PASCH
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