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Subtropical Storm Beryl Wind Speed Probabilities Number 20

2018-07-15 16:35:43| National Hurricane Center (Atlantic)

Issued at 1500 UTC SUN JUL 15 2018 792 FONT12 KNHC 151435 PWSAT2 SUBTROPICAL STORM BERYL WIND SPEED PROBABILITIES NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL AL022018 1500 UTC SUN JUL 15 2018 AT 1500Z THE CENTER OF SUBTROPICAL STORM BERYL WAS LOCATED NEAR LATITUDE 38.1 NORTH...LONGITUDE 64.7 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 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 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 12Z SUN 00Z MON 12Z MON 00Z TUE 12Z TUE 12Z WED 12Z THU PERIODS TO TO TO TO TO TO TO 00Z MON 12Z MON 00Z TUE 12Z TUE 12Z WED 12Z THU 12Z FRI FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT ILE ST PIERRE 34 X X( X) X( X) 10(10) X(10) X(10) X(10) BURGEO NFLD 34 X X( X) X( X) 4( 4) X( 4) X( 4) X( 4) SYDNEY NS 34 X X( X) 1( 1) 2( 3) X( 3) X( 3) X( 3) SABLE ISLAND 34 X X( X) 5( 5) 1( 6) X( 6) X( 6) X( 6) $$ FORECASTER BEVEN

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Subtropical Storm Beryl Public Advisory Number 20

2018-07-15 16:35:43| National Hurricane Center (Atlantic)

Issued at 1100 AM AST Sun Jul 15 2018 728 WTNT32 KNHC 151435 TCPAT2 BULLETIN Subtropical Storm Beryl Advisory Number 20 NWS National Hurricane Center Miami FL AL022018 1100 AM AST Sun Jul 15 2018 ...BERYL MEANDERING OVER THE GULF STREAM CURRENT... ...EXPECTED TO BECOME A REMNANT LOW LATE TONIGHT OR MONDAY... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...38.1N 64.7W ABOUT 400 MI...645 KM N OF BERMUDA ABOUT 450 MI...730 KM S OF HALIFAX NOVA SCOTIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...ENE OR 75 DEGREES AT 3 MPH...6 KM/H MINIMUM CENTRAL PRESSURE...1010 MB...29.83 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Subtropical Storm Beryl was located near latitude 38.1 North, longitude 64.7 West. The storm is moving toward the east-northeast near 3 mph (6 km/h). A turn toward the northeast and a faster forward speed are expected by tonight, with this motion continuing Monday and Monday night. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Beryl should begin to weaken tonight when it moves over colder water, and the cyclone is expected to degenerate into a remnant low pressure system late tonight or on Monday. Winds of 40 mph extend outward up to 60 miles (95 km) from the center. The estimated minimum central pressure is 1010 mb (29.83 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. $$ Forecaster Beven

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Summary for Subtropical Storm Beryl (AT2/AL022018)

2018-07-15 16:35:43| National Hurricane Center (Atlantic)

...BERYL MEANDERING OVER THE GULF STREAM CURRENT... ...EXPECTED TO BECOME A REMNANT LOW LATE TONIGHT OR MONDAY... As of 11:00 AM AST Sun Jul 15 the center of Beryl was located near 38.1, -64.7 with movement ENE at 3 mph. The minimum central pressure was 1010 mb with maximum sustained winds of about 40 mph.

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Subtropical Storm Beryl Forecast Advisory Number 20

2018-07-15 16:35:10| National Hurricane Center (Atlantic)

Issued at 1500 UTC SUN JUL 15 2018 960 WTNT22 KNHC 151435 TCMAT2 SUBTROPICAL STORM BERYL FORECAST/ADVISORY NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL AL022018 1500 UTC SUN JUL 15 2018 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. SUBTROPICAL STORM CENTER LOCATED NEAR 38.1N 64.7W AT 15/1500Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE EAST-NORTHEAST OR 75 DEGREES AT 3 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1010 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 50SE 50SW 0NW. 12 FT SEAS..120NE 0SE 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 38.1N 64.7W AT 15/1500Z AT 15/1200Z CENTER WAS LOCATED NEAR 38.1N 65.1W FORECAST VALID 16/0000Z 39.0N 63.4W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 50NE 50SE 0SW 0NW. FORECAST VALID 16/1200Z 40.8N 61.1W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 17/0000Z 43.2N 58.6W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 17/1200Z 45.9N 55.9W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 18/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 38.1N 64.7W NEXT ADVISORY AT 15/2100Z $$ FORECASTER BEVEN

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Atlantic Tropical Weather Outlook

2018-07-15 13:38:10| National Hurricane Center (Atlantic)

530 ABNT20 KNHC 151138 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Sun Jul 15 2018 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Subtropical Storm Beryl, located more than 400 miles north of Bermuda. Tropical cyclone formation is not expected for the next five days. && Public Advisories on Subtropical Storm Beryl are issued under WMO header WTNT32 KNHC and under AWIPS header MIATCPAT2. Forecast/Advisories on Subtropical Storm Beryl are issued under WMO header WTNT22 KNHC and under AWIPS header MIATCMAT2. $$ Forecaster Beven

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Eastern North Pacific Tropical Weather Outlook

2018-07-15 13:37:40| National Hurricane Center (East Pacific)

074 ABPZ20 KNHC 151137 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 AM PDT Sun Jul 15 2018 For the eastern North Pacific...east of 140 degrees west longitude: Shower and thunderstorm activity has changed little during the past several hours in association with a low pressure system located about 1500 miles east-southeast of the Hawaiian Islands. Environmental conditions are expected to gradually become more conducive for development, and a tropical depression could form during the next few days while the system moves westward. This system is expected to cross into the Central Pacific basin by early Monday. * Formation chance through 48 hours...medium...40 percent. * Formation chance through 5 days...medium...60 percent. $$ Forecaster Cangialosi

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Subtropical Storm Beryl Graphics

2018-07-15 10:36:25| National Hurricane Center (Atlantic)

5-Day Uncertainty Track last updated Sun, 15 Jul 2018 08:36:25 GMT Wind Speed Probabilities last updated Sun, 15 Jul 2018 09:26:57 GMT

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Subtropical Storm Beryl Forecast Discussion Number 19

2018-07-15 10:35:08| National Hurricane Center (Atlantic)

Issued at 500 AM AST Sun Jul 15 2018 149 WTNT42 KNHC 150835 TCDAT2 Subtropical Storm Beryl Discussion Number 19 NWS National Hurricane Center Miami FL AL022018 500 AM AST Sun Jul 15 2018 Water vapor imagery indicates that Beryl has become fully entangled with and embedded within an upper-level cold low, causing the small cyclone to slow down considerably over the warm waters of the Gulfstream. Beryl's appearance in satellite imagery consists of a small donut ring of shallow to moderate convection that fully encircles an eye-like feature. Most of the cloud tops in the ring are around -15C to -20C with a few overshooting towers of -35C to -45C, or about 28,000 to 38,000 ft, in the southeastern quadrant. Although that doesn't sound very impressive, those cloud heights are fairly typical for a subtropical cyclone given the low altitude of the tropopause in the inner core of cold upper-lows at high latitudes. The initial intensity is being maintained at 35 kt based on the tight ring appearance and a subtropical classification of T2.5/35 kt from TAFB. The initial motion estimate is slowly northeastward or 050/03 kt. Now that Beryl has become embedded within the upper-low, its future motion depends heavily on the motion of the now parent upper-low. For the next 48 hours, the new NHC models guidance shows Beryl and the upper-low moving northeastward toward Newfoundland within the mid-latitude westerlies, accompanied by a gradually increasing forward speed of about 10-15 kt by 36 and 48 hours. The new NHC forecast track is again slower than the previous advisory track, and lies between the HCCA and FSSE consensus track forecast models. The center of Beryl is moving slowly over North Atlantic Gulfstream waters of about 27.5C and the entire cyclone lies between the 26-deg-C isotherms, which are only about 60 nmi apart from north to south. The new forecast track keeps Beryl over these warmer waters a little longer than previous forecasts, which could result in the regeneration of convection a slight delay in Beryl weakening and eventually degenerating into a remnant low pressure system than what is currently forecast. But for now, the new NHC intensity forecast maintains continuity with the previous advisory, and closely follows a blend of the HCCA, FSSE, and IVCN intensity consensus models, which have Beryl dissipating just before reaching Newfoundland in about 72 hours. FORECAST POSITIONS AND MAX WINDS INIT 15/0900Z 38.3N 65.2W 35 KT 40 MPH 12H 15/1800Z 39.1N 64.0W 35 KT 40 MPH 24H 16/0600Z 40.5N 62.0W 30 KT 35 MPH...POST-TROP/REMNT LOW 36H 16/1800Z 42.6N 59.6W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 17/0600Z 45.0N 57.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 18/0600Z...DISSIPATED $$ Forecaster Stewart

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Subtropical Storm Beryl Wind Speed Probabilities Number 19

2018-07-15 10:34:10| National Hurricane Center (Atlantic)

Issued at 0900 UTC SUN JUL 15 2018 662 FONT12 KNHC 150834 PWSAT2 SUBTROPICAL STORM BERYL WIND SPEED PROBABILITIES NUMBER 19 NWS NATIONAL HURRICANE CENTER MIAMI FL AL022018 0900 UTC SUN JUL 15 2018 AT 0900Z THE CENTER OF SUBTROPICAL STORM BERYL WAS LOCATED NEAR LATITUDE 38.3 NORTH...LONGITUDE 65.2 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 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 ILE ST PIERRE 34 X X( X) X( X) 5( 5) X( 5) X( 5) X( 5) BURGEO NFLD 34 X X( X) X( X) 3( 3) X( 3) X( 3) X( 3) SYDNEY NS 34 X X( X) 1( 1) 2( 3) X( 3) X( 3) X( 3) SABLE ISLAND 34 X X( X) 5( 5) 4( 9) X( 9) X( 9) X( 9) $$ FORECASTER STEWART

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Subtropical Storm Beryl Public Advisory Number 19

2018-07-15 10:34:10| National Hurricane Center (Atlantic)

Issued at 500 AM AST Sun Jul 15 2018 660 WTNT32 KNHC 150834 TCPAT2 BULLETIN Subtropical Storm Beryl Advisory Number 19 NWS National Hurricane Center Miami FL AL022018 500 AM AST Sun Jul 15 2018 ...BERYL CRAWLING NORTHEASTWARD OVER THE NORTHERN ATLANTIC GULFSTREAM... ...EXPECTED TO BECOME A REMNANT LOW BY TONIGHT... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...38.3N 65.2W ABOUT 415 MI...670 KM N OF BERMUDA ABOUT 445 MI...715 KM S OF HALIFAX NOVA SCOTIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NE OR 50 DEGREES AT 3 MPH...6 KM/H MINIMUM CENTRAL PRESSURE...1010 MB...29.83 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 Subtropical Storm Beryl was located near latitude 38.3 North, longitude 65.2 West. The storm has slowed down considerably and is now moving toward the northeast near 3 mph (6 km/h). A gradual increase in forward speed toward the northeast or north-northeast is expected through Monday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Little change in strength is forecast today. Beryl should begin to weaken by this evening when it moves over colder water, and the cyclone is expected to degenerate into a remnant low pressure system late tonight or early Monday. Winds of 40 mph extend outward up to 60 miles (95 km) from the center. The estimated minimum central pressure is 1010 mb (29.83 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Stewart

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