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Tropical Storm Isaias Graphics
2020-08-04 16:43:23| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Tue, 04 Aug 2020 14:43:23 GMT Wind Speed Probabilities last updated Tue, 04 Aug 2020 15:24:19 GMT
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Tropical Storm Isaias Wind Speed Probabilities Number 30
2020-08-04 16:42:11| National Hurricane Center (Atlantic)
Issued at 1500 UTC TUE AUG 04 2020 000 FONT14 KNHC 041442 PWSAT4 TROPICAL STORM ISAIAS WIND SPEED PROBABILITIES NUMBER 30 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092020 1500 UTC TUE AUG 04 2020 AT 1500Z THE CENTER OF TROPICAL STORM ISAIAS WAS LOCATED NEAR LATITUDE 39.1 NORTH...LONGITUDE 76.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 60 KTS...70 MPH...110 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 HALIFAX NS 34 1 2( 3) X( 3) X( 3) X( 3) X( 3) X( 3) YARMOUTH NS 34 3 2( 5) X( 5) X( 5) X( 5) X( 5) X( 5) MONCTON NB 34 1 3( 4) X( 4) X( 4) X( 4) X( 4) X( 4) ST JOHN NB 34 2 3( 5) X( 5) X( 5) X( 5) X( 5) X( 5) EASTPORT ME 34 4 4( 8) X( 8) X( 8) X( 8) X( 8) X( 8) BAR HARBOR ME 34 10 6(16) X(16) X(16) X(16) X(16) X(16) AUGUSTA ME 34 28 11(39) X(39) X(39) X(39) X(39) X(39) PORTLAND ME 34 54 7(61) X(61) X(61) X(61) X(61) X(61) CONCORD NH 34 88 1(89) X(89) X(89) X(89) X(89) X(89) CONCORD NH 50 3 1( 4) X( 4) X( 4) X( 4) X( 4) X( 4) PORTSMOUTH NH 34 71 1(72) X(72) X(72) X(72) X(72) X(72) WORCESTER MA 34 91 X(91) X(91) X(91) X(91) X(91) X(91) WORCESTER MA 50 3 X( 3) X( 3) X( 3) X( 3) X( 3) X( 3) SPRINGFIELD MA 34 98 X(98) X(98) X(98) X(98) X(98) X(98) SPRINGFIELD MA 50 10 X(10) X(10) X(10) X(10) X(10) X(10) BOSTON MA 34 73 1(74) X(74) X(74) X(74) X(74) X(74) HYANNIS MA 34 46 X(46) X(46) X(46) X(46) X(46) X(46) NANTUCKET MA 34 36 X(36) X(36) X(36) X(36) X(36) X(36) PROVIDENCE RI 34 74 X(74) X(74) X(74) X(74) X(74) X(74) BRIDGEPORT CT 34 99 X(99) X(99) X(99) X(99) X(99) X(99) BRIDGEPORT CT 50 11 X(11) X(11) X(11) X(11) X(11) X(11) NEW HAVEN CT 34 99 X(99) X(99) X(99) X(99) X(99) X(99) NEW HAVEN CT 50 7 X( 7) X( 7) X( 7) X( 7) X( 7) X( 7) HARTFORD CT 34 98 X(98) X(98) X(98) X(98) X(98) X(98) HARTFORD CT 50 7 X( 7) X( 7) X( 7) X( 7) X( 7) X( 7) NEW LONDON CT 34 88 X(88) X(88) X(88) X(88) X(88) X(88) ALBANY NY 34 98 X(98) X(98) X(98) X(98) X(98) X(98) ALBANY NY 50 21 X(21) X(21) X(21) X(21) X(21) X(21) ALBANY NY 64 2 X( 2) X( 2) X( 2) X( 2) X( 2) X( 2) POUGHKEEPSIE 34 99 X(99) X(99) X(99) X(99) X(99) X(99) POUGHKEEPSIE 50 49 X(49) X(49) X(49) X(49) X(49) X(49) POUGHKEEPSIE 64 1 X( 1) X( 1) X( 1) X( 1) X( 1) X( 1) MONTAUK POINT 34 79 X(79) X(79) X(79) X(79) X(79) X(79) ISLIP NY 34 99 X(99) X(99) X(99) X(99) X(99) X(99) ISLIP NY 50 5 X( 5) X( 5) X( 5) X( 5) X( 5) X( 5) NYC JFK AIRPRT 34 99 X(99) X(99) X(99) X(99) X(99) X(99) NYC JFK AIRPRT 50 26 X(26) X(26) X(26) X(26) X(26) X(26) NYC CNTRL PARK 34 99 X(99) X(99) X(99) X(99) X(99) X(99) NYC CNTRL PARK 50 49 X(49) X(49) X(49) X(49) X(49) X(49) NEWARK NJ 34 99 X(99) X(99) X(99) X(99) X(99) X(99) NEWARK NJ 50 63 X(63) X(63) X(63) X(63) X(63) X(63) TRENTON NJ 34 99 X(99) X(99) X(99) X(99) X(99) X(99) TRENTON NJ 50 83 X(83) X(83) X(83) X(83) X(83) X(83) TRENTON NJ 64 1 X( 1) X( 1) X( 1) X( 1) X( 1) X( 1) NWS EARLE NJ 34 99 X(99) X(99) X(99) X(99) X(99) X(99) NWS EARLE NJ 50 42 X(42) X(42) X(42) X(42) X(42) X(42) ALLENTOWN PA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) ALLENTOWN PA 50 12 X(12) X(12) X(12) X(12) X(12) X(12) PHILADELPHIA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) PHILADELPHIA 50 90 X(90) X(90) X(90) X(90) X(90) X(90) PHILADELPHIA 64 2 X( 2) X( 2) X( 2) X( 2) X( 2) X( 2) ATLANTIC CITY 34 99 X(99) X(99) X(99) X(99) X(99) X(99) ATLANTIC CITY 50 52 X(52) X(52) X(52) X(52) X(52) X(52) BALTIMORE MD 34 99 X(99) X(99) X(99) X(99) X(99) X(99) DOVER DE 34 99 X(99) X(99) X(99) X(99) X(99) X(99) DOVER DE 50 99 X(99) X(99) X(99) X(99) X(99) X(99) ANNAPOLIS MD 34 99 X(99) X(99) X(99) X(99) X(99) X(99) WASHINGTON DC 34 95 X(95) X(95) X(95) X(95) X(95) X(95) CAPE HENLOPEN 34 99 X(99) X(99) X(99) X(99) X(99) X(99) CAPE HENLOPEN 50 80 X(80) X(80) X(80) X(80) X(80) X(80) OCEAN CITY MD 34 99 X(99) X(99) X(99) X(99) X(99) X(99) OCEAN CITY MD 50 6 X( 6) X( 6) X( 6) X( 6) X( 6) X( 6) PAX RIVER NAS 34 99 X(99) X(99) X(99) X(99) X(99) X(99) PAX RIVER NAS 50 99 X(99) X(99) X(99) X(99) X(99) X(99) WALLOPS CDA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) WALLOPS CDA 50 51 X(51) X(51) X(51) X(51) X(51) X(51) RICHMOND VA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) NORFOLK NAS 34 99 X(99) X(99) X(99) X(99) X(99) X(99) NORFOLK VA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) OCEANA NAS VA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) $$ FORECASTER STEWART
Tropical Storm Isaias Forecast Advisory Number 30
2020-08-04 16:41:34| National Hurricane Center (Atlantic)
Issued at 1500 UTC TUE AUG 04 2020 000 WTNT24 KNHC 041441 TCMAT4 TROPICAL STORM ISAIAS FORECAST/ADVISORY NUMBER 30 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092020 1500 UTC TUE AUG 04 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED SOUTH OF DUCK...NORTH CAROLINA...INCLUDING THE PAMLICO AND ALBEMARLE SOUNDS. THE STORM SURGE WARNING HAS BEEN DISCONTINUED. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * NORTH OF DUCK NORTH CAROLINA TO EASTPORT MAINE * CHESAPEAKE BAY * TIDAL POTOMAC RIVER * DELAWARE BAY * LONG ISLAND AND LONG ISLAND SOUND * MARTHA'S VINEYARD...NANTUCKET...AND BLOCK ISLAND A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE NEXT 12 TO 18 HOURS. TROPICAL STORM CENTER LOCATED NEAR 39.1N 76.1W AT 04/1500Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHEAST OR 20 DEGREES AT 30 KT ESTIMATED MINIMUM CENTRAL PRESSURE 993 MB MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 80 KT. 50 KT....... 60NE 60SE 0SW 0NW. 34 KT.......110NE 120SE 40SW 40NW. 12 FT SEAS..180NE 180SE 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 39.1N 76.1W AT 04/1500Z AT 04/1200Z CENTER WAS LOCATED NEAR 37.7N 76.8W FORECAST VALID 05/0000Z 43.2N 73.8W...INLAND MAX WIND 50 KT...GUSTS 65 KT. 50 KT... 40NE 70SE 20SW 0NW. 34 KT...120NE 180SE 40SW 40NW. FORECAST VALID 05/1200Z 48.2N 71.7W...POST-TROP/INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 180SE 0SW 0NW. FORECAST VALID 06/0000Z 52.0N 71.1W...POST-TROP/EXTRATROP MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 06/1200Z 53.6N 69.5W...POST-TROP/EXTRATROP MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 07/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 39.1N 76.1W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 04/1800Z NEXT ADVISORY AT 04/2100Z $$ FORECASTER STEWART
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Summary for Tropical Storm Isaias (AT4/AL092020)
2020-08-04 15:47:05| National Hurricane Center (Atlantic)
...CENTER OF ISAIAS MOVING RAPIDLY ACROSS EASTERN MARYLAND... ...STRONG WINDS...HEAVY RAINFALL...AND TORNADOES WILL CONTINUE TO SPREAD NORTH-NORTHEASTWARD ALONG THE MID-ATLANTIC COAST TODAY... As of 11:00 AM EDT Tue Aug 4 the center of Isaias was located near 39.1, -76.1 with movement NNE at 35 mph. The minimum central pressure was 993 mb with maximum sustained winds of about 70 mph.
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Tropical Storm Isaias Update Statement
2020-08-04 14:50:41| National Hurricane Center (Atlantic)
Issued at 900 AM EDT Tue Aug 4 2020 000 WTNT64 KNHC 041250 TCUAT4 Tropical Storm Isaias Tropical Cyclone Update NWS National Hurricane Center Miami FL AL092020 900 AM EDT Tue Aug 4 2020 ...900 AM EDT POSITION UPDATE... ...STRONG WINDS...HEAVY RAINFALL...AND TORNADOES OCCURRING OVER EASTERN MARYLAND AND THE DELMARVA PENINSULA WILL SPREAD NORTHWARD ALONG THE MID-ATLANTIC COAST TODAY... A NOAA NOS/COOPS weather station at York River East, Virginia, recently reported a sustained wind of 59 mph (94 km/h) and a gust to 94 mph (150 km/h). Another NOAA NOS/COOPS weather station at Rappahannock Shoal, Virginia, recently reported a sustained wind of 53 mph (85 km/h) and a gust to 85 mph (135 km/h). SUMMARY OF 900 AM EDT...1300 UTC...INFORMATION ----------------------------------------------- LOCATION...38.2N 76.6W ABOUT 5 MI...10 KM SSW OF WILDEWOOD MARYLAND ABOUT 50 MI...80 KM S OF ANNAPOLIS MARYLAND MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NNE OR 25 DEGREES AT 33 MPH...54 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.32 INCHES $$ Forecaster Stewart/Roberts
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