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Tropical Storm Elsa Wind Speed Probabilities Number 38
2021-07-09 16:45:32| National Hurricane Center (Atlantic)
Issued at 1500 UTC FRI JUL 09 2021 000 FONT15 KNHC 091445 PWSAT5 TROPICAL STORM ELSA WIND SPEED PROBABILITIES NUMBER 38 NWS NATIONAL HURRICANE CENTER MIAMI FL AL052021 1500 UTC FRI JUL 09 2021 AT 1500Z THE CENTER OF TROPICAL STORM ELSA WAS LOCATED NEAR LATITUDE 41.0 NORTH...LONGITUDE 72.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 45 KTS...50 MPH...85 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 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 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 FRI 00Z SAT 12Z SAT 00Z SUN 12Z SUN 12Z MON 12Z TUE PERIODS TO TO TO TO TO TO TO 00Z SAT 12Z SAT 00Z SUN 12Z SUN 12Z MON 12Z TUE 12Z WED FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT CAPE RACE NFLD 34 X X( X) 4( 4) X( 4) X( 4) X( 4) X( 4) ILE ST PIERRE 34 X 9( 9) 2(11) X(11) X(11) X(11) X(11) BURGEO NFLD 34 X 22(22) 6(28) X(28) X(28) X(28) X(28) PTX BASQUES 34 X 41(41) 3(44) X(44) X(44) X(44) X(44) PTX BASQUES 50 X 4( 4) X( 4) X( 4) X( 4) X( 4) X( 4) EDDY POINT NS 34 X 9( 9) X( 9) X( 9) X( 9) X( 9) X( 9) SYDNEY NS 34 X 24(24) X(24) X(24) X(24) X(24) X(24) SABLE ISLAND 34 X 4( 4) X( 4) X( 4) X( 4) X( 4) X( 4) HALIFAX NS 34 6 32(38) X(38) X(38) X(38) X(38) X(38) YARMOUTH NS 34 59 13(72) X(72) X(72) X(72) X(72) X(72) YARMOUTH NS 50 2 4( 6) X( 6) X( 6) X( 6) X( 6) X( 6) MONCTON NB 34 X 18(18) X(18) X(18) X(18) X(18) X(18) ST JOHN NB 34 6 24(30) X(30) X(30) X(30) X(30) X(30) EASTPORT ME 34 36 7(43) X(43) X(43) X(43) X(43) X(43) EASTPORT ME 50 1 2( 3) X( 3) X( 3) X( 3) X( 3) X( 3) BAR HARBOR ME 34 14 X(14) X(14) X(14) X(14) X(14) X(14) BOSTON MA 34 3 X( 3) X( 3) X( 3) X( 3) X( 3) X( 3) HYANNIS MA 34 80 X(80) X(80) X(80) X(80) X(80) X(80) NANTUCKET MA 34 94 X(94) X(94) X(94) X(94) X(94) X(94) PROVIDENCE RI 34 35 X(35) X(35) X(35) X(35) X(35) X(35) NEW LONDON CT 34 6 X( 6) X( 6) X( 6) X( 6) X( 6) X( 6) MONTAUK POINT 34 99 X(99) X(99) X(99) X(99) X(99) X(99) $$ FORECASTER BROWN
Tropical Storm Elsa Forecast Advisory Number 38
2021-07-09 16:44:31| National Hurricane Center (Atlantic)
Issued at 1500 UTC FRI JUL 09 2021 000 WTNT25 KNHC 091444 TCMAT5 TROPICAL STORM ELSA FORECAST/ADVISORY NUMBER 38 NWS NATIONAL HURRICANE CENTER MIAMI FL AL052021 1500 UTC FRI JUL 09 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * LONG ISLAND FROM EAST ROCKAWAY INLET TO THE EASTERN TIP ALONG THE SOUTH SHORE AND FROM PORT JEFFERSON HARBOR EASTWARD ON THE NORTH SHORE * NEW HAVEN...CONNECTICUT TO MERRIMACK RIVER...MASSACHUSETTS INCLUDING CAPE COD...BLOCK ISLAND...MARTHA'S VINEYARD...AND NANTUCKET A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. FOR INFORMATION ON WIND HAZARDS NORTH OF THE TROPICAL STORM WARNING AREA...PLEASE SEE PRODUCTS FROM YOUR LOCAL WEATHER OFFICE. TROPICAL STORM CENTER LOCATED NEAR 41.0N 72.1W AT 09/1500Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 45 DEGREES AT 27 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT. 34 KT....... 70NE 150SE 0SW 0NW. 12 FT SEAS.. 0NE 240SE 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 41.0N 72.1W AT 09/1500Z AT 09/1200Z CENTER WAS LOCATED NEAR 40.2N 73.1W FORECAST VALID 10/0000Z 44.0N 67.7W...POST-TROP/EXTRATROP MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 70NE 150SE 0SW 0NW. FORECAST VALID 10/1200Z 48.4N 60.3W...POST-TROP/EXTRATROP MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 90NE 150SE 0SW 0NW. FORECAST VALID 11/0000Z 52.2N 51.0W...POST-TROP/EXTRATROP MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 60NE 150SE 0SW 0NW. FORECAST VALID 11/1200Z 56.5N 41.0W...POST-TROP/EXTRATROP MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 12/0000Z 60.0N 32.5W...POST-TROP/EXTRATROP MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 12/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 41.0N 72.1W INTERMEDIATE PUBLIC ADVISORY...WTNT35 KNHC/MIATCPAT5...AT 09/1800Z NEXT ADVISORY AT 09/2100Z $$ FORECASTER BROWN
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Tropical Storm Elsa Public Advisory Number 37A
2021-07-09 13:48:30| National Hurricane Center (Atlantic)
Issued at 800 AM EDT Fri Jul 09 2021 000 WTNT35 KNHC 091148 TCPAT5 BULLETIN Tropical Storm Elsa Intermediate Advisory Number 37A NWS National Hurricane Center Miami FL AL052021 800 AM EDT Fri Jul 09 2021 ...HEAVY RAIN AND GUSTY WINDS SPREADING ACROSS LONG ISLAND AND THE NORTHEASTERN UNITED STATES... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...40.2N 73.1W ABOUT 90 MI...140 KM SW OF MONTAUK POINT NEW YORK MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NE OR 45 DEGREES AT 31 MPH...50 KM/H MINIMUM CENTRAL PRESSURE...1000 MB...29.53 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning has been discontinued south of Sandy Hook, New Jersey. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Long Island from East Rockaway Inlet to the eastern tip along the south shore and from Port Jefferson Harbor eastward on the north shore * New Haven, Connecticut to Merrimack River, Massachusetts including Cape Cod, Block Island, Martha's Vineyard, and Nantucket A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. For information on wind hazards north of the Tropical Storm Warning area, please see products from your local weather office. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 800 AM EDT (1200 UTC), the center of Tropical Storm Elsa was located near latitude 40.2 North, longitude 73.1 West. Elsa is moving toward the northeast near 31 mph (50 km/h), and this general motion is expected to continue with an increase in forward speed during the next couple of days. On the forecast track, the center of Elsa will move near or over eastern Long Island and the coast of southern New England today, and then offshore the northeastern United States coast by late this afternoon. The system should move over Atlantic Canada by late tonight and Saturday. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. No significant change in strength is expected through today. Elsa is forecast to become a post-tropical cyclone by tonight. Tropical-storm-force winds extend outward up to 160 miles (260 km) from the center. NOAA buoy 44066 located about 85 miles (140 km) east of Long Beach, New Jersey recently measured a peak one-minute sustained wind of 45 mph (72 km/h) and a gust to 49 mph (80 km/h). The estimated minimum central pressure is 1000 mb (29.53 inches), based on nearby surface observations. HAZARDS AFFECTING LAND ---------------------- Key messages for Elsa can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT5, WMO header WTNT45 KNHC and on the web at www.hurricanes.gov/graphics_at5.shtml?key_messages. WIND: Tropical storm conditions will spread into the warning area over the northeastern U.S. coast this morning and continue through early afternoon. Elsa is likely to bring gusty winds to portions of Atlantic Canada tonight and Saturday after it becomes a post-tropical cyclone. RAINFALL: Across northern New Jersey, Long Island, and southern and coastal New England...2 to 4 inches of rain with isolated totals up to 6 inches are possible through Friday, which could result in considerable flash and urban flooding. Isolated minor river flooding is also expected. For the latest rainfall reports and wind gusts associated with Tropical Storm Elsa, please visit the following link: https://www.wpc.ncep.noaa.gov/discussions/nfdscc5.html TORNADOES: A tornado or two will be possible through early afternoon over parts of Long Island and southeastern New England. NEXT ADVISORY ------------- Next complete advisory at 1100 AM EDT. $$ Forecaster Brown/Zelinsky
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Tropical Storm Elsa Forecast Discussion Number 37
2021-07-09 10:44:57| National Hurricane Center (Atlantic)
Issued at 500 AM EDT Fri Jul 09 2021 000 WTNT45 KNHC 090844 TCDAT5 Tropical Storm Elsa Discussion Number 37 NWS National Hurricane Center Miami FL AL052021 500 AM EDT Fri Jul 09 2021 Elsa has become better organized this early Friday morning as evidenced by a tightly coiled convective band that wraps completely around the low-level circulation center, along with Doppler radar velocities of more than 80 kt detected between 3000-7000 ft. Upper-level outflow has expanded in all directions except the southwestern quadrant, and the GFS and ECMWF models have assessed the vertical wind shear to only be 10 kt and 13 kt, respectively, over the center. Wind gusts to 68 kt and 62 kt were recently measured in Ludlam Bay, New Jersey, and Beach Haven, New Jersey, respectively. However, radar data suggest that these wind gusts were possibly associated with the passage of nearby tornadic circulations and were not due to Elsa's larger wind field. The central pressure of 1000 mb is based on a nearby pressure report of 1000.6 mb from the Ludlam Bay, New Jersey, WeatherFlow site, but this value could be conservative. The initial wind speed remains 45 kt based on recent observations from offshore buoys. The initial motion is estimated to be 045/27 kt. Elsa is forecast by the latest global and regional models to continue accelerating northeastward today through Saturday due to the system being embedded within deep-layer southwesterly mid-latitude flow. Elsa should move over southeastern New England today and over Atlantic Canada late tonight and on Saturday. The new NHC track forecast lies on top of the previous advisory track and is close to the middle of the tightly packed simple- and corrected-consensus track models. Elsa will be moving over 22-deg-C and cooler sea-surface temperatures by 6 hours and beyond, which should further hasten the ongoing extratropical transition process. This transition is expected to be completed in 18 hours or so when Elsa is forecast to be located over Atlantic Canada. Key Messages: 1. As Elsa moves near Long Island and southern and coastal New England today, heavy rainfall could lead to considerable flash and urban flooding. 2. Tropical storm conditions should continue along portions of the mid-Atlantic coast early this morning. Tropical storm conditions are expected in portions of the southern New England states and New York by late this morning and afternoon. Gusty winds are expected over portions of Atlantic Canada tonight and Saturday. FORECAST POSITIONS AND MAX WINDS INIT 09/0900Z 39.4N 74.3W 45 KT 50 MPH...OVER WATER 12H 09/1800Z 42.2N 70.3W 45 KT 50 MPH...OVER WATER 24H 10/0600Z 46.6N 63.4W 45 KT 50 MPH...POST-TROP/EXTRATROP 36H 10/1800Z 51.3N 54.5W 40 KT 45 MPH...POST-TROP/EXTRATROP 48H 11/0600Z 55.4N 45.2W 35 KT 40 MPH...POST-TROP/EXTRATROP 60H 11/1800Z 59.5N 36.0W 30 KT 35 MPH...POST-TROP/EXTRATROP 72H 12/0600Z...DISSIPATED $$ Forecaster Stewart
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Tropical Storm Elsa Wind Speed Probabilities Number 37
2021-07-09 10:37:29| National Hurricane Center (Atlantic)
Issued at 0900 UTC FRI JUL 09 2021 613 FONT15 KNHC 090837 PWSAT5 TROPICAL STORM ELSA WIND SPEED PROBABILITIES NUMBER 37 NWS NATIONAL HURRICANE CENTER MIAMI FL AL052021 0900 UTC FRI JUL 09 2021 AT 0900Z THE CENTER OF TROPICAL STORM ELSA WAS LOCATED NEAR LATITUDE 39.4 NORTH...LONGITUDE 74.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 45 KTS...50 MPH...85 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 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 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 CAPE RACE NFLD 34 X X( X) 6( 6) X( 6) X( 6) X( 6) X( 6) ILE ST PIERRE 34 X X( X) 15(15) X(15) X(15) X(15) X(15) BURGEO NFLD 34 X 2( 2) 32(34) X(34) X(34) X(34) X(34) PTX BASQUES 34 X 7( 7) 44(51) X(51) X(51) X(51) X(51) PTX BASQUES 50 X X( X) 7( 7) X( 7) X( 7) X( 7) X( 7) EDDY POINT NS 34 X 19(19) 2(21) X(21) X(21) X(21) X(21) SYDNEY NS 34 X 20(20) 13(33) X(33) X(33) X(33) X(33) SABLE ISLAND 34 X 10(10) X(10) X(10) X(10) X(10) X(10) HALIFAX NS 34 X 37(37) X(37) X(37) X(37) X(37) X(37) YARMOUTH NS 34 1 61(62) X(62) X(62) X(62) X(62) X(62) YARMOUTH NS 50 X 5( 5) X( 5) X( 5) X( 5) X( 5) X( 5) MONCTON NB 34 X 26(26) X(26) X(26) X(26) X(26) X(26) ST JOHN NB 34 X 27(27) X(27) X(27) X(27) X(27) X(27) EASTPORT ME 34 1 32(33) X(33) X(33) X(33) X(33) X(33) BAR HARBOR ME 34 1 8( 9) X( 9) X( 9) X( 9) X( 9) X( 9) PORTLAND ME 34 4 X( 4) X( 4) X( 4) X( 4) X( 4) X( 4) CONCORD NH 34 5 X( 5) X( 5) X( 5) X( 5) X( 5) X( 5) PORTSMOUTH NH 34 13 X(13) X(13) X(13) X(13) X(13) X(13) WORCESTER MA 34 18 X(18) X(18) X(18) X(18) X(18) X(18) SPRINGFIELD MA 34 7 X( 7) X( 7) X( 7) X( 7) X( 7) X( 7) BOSTON MA 34 32 X(32) X(32) X(32) X(32) X(32) X(32) HYANNIS MA 34 64 X(64) X(64) X(64) X(64) X(64) X(64) HYANNIS MA 50 4 X( 4) X( 4) X( 4) X( 4) X( 4) X( 4) NANTUCKET MA 34 73 X(73) X(73) X(73) X(73) X(73) X(73) NANTUCKET MA 50 6 X( 6) X( 6) X( 6) X( 6) X( 6) X( 6) PROVIDENCE RI 34 49 X(49) X(49) X(49) X(49) X(49) X(49) BRIDGEPORT CT 34 7 X( 7) X( 7) X( 7) X( 7) X( 7) X( 7) NEW HAVEN CT 34 11 X(11) X(11) X(11) X(11) X(11) X(11) HARTFORD CT 34 11 X(11) X(11) X(11) X(11) X(11) X(11) NEW LONDON CT 34 24 X(24) X(24) X(24) X(24) X(24) X(24) MONTAUK POINT 34 59 X(59) X(59) X(59) X(59) X(59) X(59) ISLIP NY 34 9 X( 9) X( 9) X( 9) X( 9) X( 9) X( 9) NYC JFK AIRPRT 34 20 X(20) X(20) X(20) X(20) X(20) X(20) ATLANTIC CITY 34 15 X(15) X(15) X(15) X(15) X(15) X(15) DOVER DE 34 5 X( 5) X( 5) X( 5) X( 5) X( 5) X( 5) OCEAN CITY MD 34 18 X(18) X(18) X(18) X(18) X(18) X(18) $$ FORECASTER STEWART
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