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Hurricane Isaias Graphics
2020-07-31 07:51:55| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 31 Jul 2020 05:51:55 GMT Wind Speed Probabilities last updated Fri, 31 Jul 2020 04:14:46 GMT
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Hurricane Isaias Public Advisory Number 12A
2020-07-31 07:46:33| National Hurricane Center (Atlantic)
Issued at 200 AM EDT Fri Jul 31 2020 000 WTNT34 KNHC 310546 TCPAT4 BULLETIN Hurricane Isaias Intermediate Advisory Number 12A NWS National Hurricane Center Miami FL AL092020 200 AM EDT Fri Jul 31 2020 ...ISAIAS MOVING CLOSER TO GREAT INAGUA ISLAND... SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...20.6N 72.7W ABOUT 45 MI...70 KM SE OF GREAT INAGUA ISLAND MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 18 MPH...30 KM/H MINIMUM CENTRAL PRESSURE...992 MB...29.29 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Northwestern Bahamas including Andros Island, New Providence, Eleuthera, Abacos Islands, Berry Islands, Grand Bahamas Island, and Bimini * Southeastern Bahamas including the Acklins, Crooked Island, Long Cay, the Inaguas, Mayaguana, and the Ragged Islands * Central Bahamas, including Cat Island, the Exumas, Long Island, Rum Cay, and San Salvador A Tropical Storm Warning is in effect for... * Dominican Republic entire southern and northern coastlines * North coast of Haiti from Le Mole St Nicholas eastward to the northern border with the Dominican Republic * Turks and Caicos Islands A Tropical Storm Watch is in effect for... * East coast of Florida from Ocean Reef to Sebastian Inlet * Lake Okeechobee Interests elsewhere along the southeast coast of the United States should monitor the progress of this system. Additional watches or warnings may be required for a portion of the Florida peninsula on Friday. A Hurricane Warning means that hurricane conditions are of the Leeward Islands, the Virgin Islands, expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. 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 in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 AM EDT (0600 UTC), the center of Hurricane Isaias was located near latitude 20.6 North, longitude 72.7 West. Isaias is moving toward the northwest near 18 mph (30 km/h), and a generally northwestward motion with some decrease in forward speed is expected for the next couple of days followed by turn toward the north-northwest. On the forecast track, the center of Isaias will move near or over the Southeastern Bahamas overnight. Isaias is forecast to be near the Central Bahamas Friday night and move near or over the Northwestern Bahamas and near South Florida on Saturday. Maximum sustained winds remain near 80 mph (130 km/h) with higher gusts. Some strengthening is possible today, and Isaias is expected to remain a hurricane for the next few days. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 240 miles (390 km). The estimated minimum central pressure based on Air Force Reserve Hurricane Hunter data is 992 mb (29.29 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Isaias can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT4.shtml. STORM SURGE: A dangerous storm surge will raise water levels by as much as 3 to 5 feet above normal tide levels in areas of onshore winds in the central and northwestern Bahamas. Storm surge will raise water level by as much as 1 to 3 ft above normal tide levels in the southeastern Bahamas. WIND: Tropical storm conditions will continue to spread across portions of the Dominican Republic, Haiti, the southeastern Bahamas and Turks and Caicos tonight and early Friday. Hurricane conditions are expected to begin in the central Bahamas Friday morning and spread into the northwestern Bahamas beginning late Friday. Hurricane conditions are expected within portions of the the northwestern Bahamas Friday night and Saturday. Tropical storm conditions are possible in the watch area in Florida beginning Saturday. RAINFALL: Isaias is expected to produce the following rain accumulations through Friday night: Dominican Republic and northern Haiti: 4 to 8 inches, with isolated maximum totals of 12 inches. Bahamas, Turks and Caicos: 4 to 8 inches. Cuba: 1 to 2 inches, with isolated maximum totals of 4 inches. These rainfall amounts will lead to life-threatening flash flooding and mudslides, as well as river flooding. Urban and small stream flooding is expected for the U.S. Virgin Islands and Hispaniola. From Friday night through Monday: South Florida into east-Central Florida: 2 to 4 inches, with isolated maximum totals of 6 inches. These rainfall amounts could result in isolated flash and urban flooding, especially in low-lying and poorly drained areas. SURF: Swells generated by Isaias are affecting portions of Puerto Rico, the Dominican Republic, the Turks and Caicos Islands and the southeastern Bahamas. These swells will spread along the coast of Cuba and into the central and northwestern Bahamas later today and across the east coast of Florida on Saturday. 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 AM EDT. $$ Forecaster Blake
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Hurricane Isaias Wind Speed Probabilities Number 12
2020-07-31 06:13:02| National Hurricane Center (Atlantic)
Issued at 0400 UTC FRI JUL 31 2020 000 FONT14 KNHC 310412 PWSAT4 HURRICANE ISAIAS SPECIAL WIND SPEED PROBABILITIES NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092020 0400 UTC FRI JUL 31 2020 AT 0400Z THE CENTER OF HURRICANE ISAIAS WAS LOCATED NEAR LATITUDE 20.4 NORTH...LONGITUDE 72.2 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 70 KTS...80 MPH...130 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 00Z 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 00Z FRI 12Z FRI 00Z SAT 12Z SAT 00Z SUN 00Z MON 00Z TUE PERIODS TO TO TO TO TO TO TO 12Z FRI 00Z SAT 12Z SAT 00Z SUN 00Z MON 00Z TUE 00Z WED FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT HALIFAX NS 34 X X( X) X( X) X( X) X( X) X( X) 5( 5) YARMOUTH NS 34 X X( X) X( X) X( X) X( X) X( X) 10(10) ST JOHN NB 34 X X( X) X( X) X( X) X( X) X( X) 4( 4) EASTPORT ME 34 X X( X) X( X) X( X) X( X) X( X) 6( 6) BAR HARBOR ME 34 X X( X) X( X) X( X) X( X) X( X) 5( 5) AUGUSTA ME 34 X X( X) X( X) X( X) X( X) X( X) 3( 3) PORTLAND ME 34 X X( X) X( X) X( X) X( X) X( X) 4( 4) CONCORD NH 34 X X( X) X( X) X( X) X( X) X( X) 4( 4) PORTSMOUTH NH 34 X X( X) X( X) X( X) X( X) X( X) 5( 5) WORCESTER MA 34 X X( X) X( X) X( X) X( X) X( X) 6( 6) SPRINGFIELD MA 34 X X( X) X( X) X( X) X( X) X( X) 5( 5) BOSTON MA 34 X X( X) X( X) X( X) X( X) X( X) 8( 8) HYANNIS MA 34 X X( X) X( X) X( X) X( X) X( X) 14(14) HYANNIS MA 50 X X( X) X( X) X( X) X( X) X( X) 4( 4) NANTUCKET MA 34 X X( X) X( X) X( X) X( X) X( X) 23(23) NANTUCKET MA 50 X X( X) X( X) X( X) X( X) X( X) 8( 8) NANTUCKET MA 64 X X( X) X( X) X( X) X( X) X( X) 1( 1) PROVIDENCE RI 34 X X( X) X( X) X( X) X( X) X( X) 16(16) PROVIDENCE RI 50 X X( X) X( X) X( X) X( X) X( X) 3( 3) BRIDGEPORT CT 34 X X( X) X( X) X( X) X( X) X( X) 6( 6) NEW HAVEN CT 34 X X( X) X( X) X( X) X( X) X( X) 7( 7) HARTFORD CT 34 X X( X) X( X) X( X) X( X) X( X) 6( 6) NEW LONDON CT 34 X X( X) X( X) X( X) X( X) X( X) 9( 9) POUGHKEEPSIE 34 X X( X) X( X) X( X) X( X) X( X) 3( 3) MONTAUK POINT 34 X X( X) X( X) X( X) X( X) X( X) 18(18) MONTAUK POINT 50 X X( X) X( X) X( X) X( X) X( X) 4( 4) ISLIP NY 34 X X( X) X( X) X( X) X( X) X( X) 7( 7) NYC JFK AIRPRT 34 X X( X) X( X) X( X) X( X) 1( 1) 8( 9) NYC CNTRL PARK 34 X X( X) X( X) X( X) X( X) X( X) 6( 6) NEWARK NJ 34 X X( X) X( X) X( X) X( X) X( X) 5( 5) TRENTON NJ 34 X X( X) X( X) X( X) X( X) X( X) 5( 5) NWS EARLE NJ 34 X X( X) X( X) X( X) X( X) X( X) 6( 6) PHILADELPHIA 34 X X( X) X( X) X( X) X( X) 1( 1) 4( 5) ATLANTIC CITY 34 X X( X) X( X) X( X) X( X) 1( 1) 7( 8) BALTIMORE MD 34 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) DOVER DE 34 X X( X) X( X) X( X) X( X) 1( 1) 5( 6) ANNAPOLIS MD 34 X X( X) X( X) X( X) X( X) 1( 1) 3( 4) WASHINGTON DC 34 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) CAPE HENLOPEN 34 X X( X) X( X) X( X) X( X) 2( 2) 11(13) CAPE HENLOPEN 50 X X( X) X( X) X( X) X( X) X( X) 3( 3) OCEAN CITY MD 34 X X( X) X( X) X( X) X( X) 3( 3) 12(15) OCEAN CITY MD 50 X X( X) X( X) X( X) X( X) X( X) 4( 4) PAX RIVER NAS 34 X X( X) X( X) X( X) X( X) 1( 1) 5( 6) WALLOPS CDA 34 X X( X) X( X) X( X) X( X) 3( 3) 12(15) WALLOPS CDA 50 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) RICHMOND VA 34 X X( X) X( X) X( X) X( X) 2( 2) 4( 6) DANVILLE VA 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) NORFOLK NAS 34 X X( X) X( X) X( X) X( X) 5( 5) 6(11) NORFOLK VA 34 X X( X) X( X) X( X) X( X) 5( 5) 7(12) OCEANA NAS VA 34 X X( X) X( X) X( X) X( X) 6( 6) 7(13) OCEANA NAS VA 50 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) ELIZABETH CTY 34 X X( X) X( X) X( X) X( X) 8( 8) 8(16) ELIZABETH CTY 50 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) GREENSBORO NC 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) RALEIGH NC 34 X X( X) X( X) X( X) X( X) 5( 5) 2( 7) ROCKY MT NC 34 X X( X) X( X) X( X) 1( 1) 6( 7) 4(11) CAPE HATTERAS 34 X X( X) X( X) X( X) X( X) 17(17) 12(29) CAPE HATTERAS 50 X X( X) X( X) X( X) X( X) 3( 3) 5( 8) FAYETTEVILLE 34 X X( X) X( X) X( X) 1( 1) 8( 9) 2(11) CHARLOTTE NC 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) CHERRY PT NC 34 X X( X) X( X) X( X) X( X) 14(14) 8(22) CHERRY PT NC 50 X X( X) X( X) X( X) X( X) 4( 4) 1( 5) NEW RIVER NC 34 X X( X) X( X) X( X) 1( 1) 15(16) 5(21) NEW RIVER NC 50 X X( X) X( X) X( X) X( X) 3( 3) 1( 4) MOREHEAD CITY 34 X X( X) X( X) X( X) 1( 1) 20(21) 8(29) MOREHEAD CITY 50 X X( X) X( X) X( X) X( X) 6( 6) 2( 8) SURF CITY NC 34 X X( X) X( X) X( X) 2( 2) 20(22) 6(28) SURF CITY NC 50 X X( X) X( X) X( X) X( X) 6( 6) 1( 7) WILMINGTON NC 34 X X( X) X( X) X( X) 1( 1) 17(18) 4(22) WILMINGTON NC 50 X X( X) X( X) X( X) X( X) 4( 4) 1( 5) BALD HEAD ISL 34 X X( X) X( X) X( X) 4( 4) 24(28) 4(32) BALD HEAD ISL 50 X X( X) X( X) X( X) X( X) 7( 7) 2( 9) FLORENCE SC 34 X X( X) X( X) X( X) 2( 2) 9(11) X(11) COLUMBIA SC 34 X X( X) X( X) X( X) 1( 1) 4( 5) X( 5) LITTLE RIVER 34 X X( X) X( X) X( X) 4( 4) 21(25) 2(27) LITTLE RIVER 50 X X( X) X( X) X( X) X( X) 5( 5) 1( 6) MYRTLE BEACH 34 X X( X) X( X) X( X) 5( 5) 20(25) 2(27) MYRTLE BEACH 50 X X( X) X( X) X( X) X( X) 5( 5) X( 5) GEORGETOWN SC 34 X X( X) X( X) X( X) 4( 4) 14(18) 1(19) GEORGETOWN SC 50 X X( X) X( X) X( X) X( X) 4( 4) X( 4) CHARLESTON SC 34 X X( X) X( X) X( X) 9( 9) 16(25) X(25) CHARLESTON SC 50 X X( X) X( X) X( X) 1( 1) 5( 6) X( 6) BEAUFORT MCAS 34 X X( X) X( X) X( X) 9( 9) 11(20) 1(21) BEAUFORT MCAS 50 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) AUGUSTA GA 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) SAVANNAH GA 34 X X( X) X( X) X( X) 5( 5) 6(11) X(11) KINGS BAY GA 34 X X( X) X( X) 1( 1) 13(14) 6(20) X(20) KINGS BAY GA 50 X X( X) X( X) X( X) 1( 1) 2( 3) X( 3) WAYCROSS GA 34 X X( X) X( X) X( X) 3( 3) 2( 5) X( 5) MAYPORT NS FL 34 X X( X) X( X) 1( 1) 17(18) 5(23) X(23) MAYPORT NS FL 50 X X( X) X( X) X( X) 2( 2) 1( 3) X( 3) JACKSONVILLE 34 X X( X) X( X) 1( 1) 6( 7) 3(10) X(10) GAINESVILLE FL 34 X X( X) X( X) X( X) 4( 4) 2( 6) X( 6) DAYTONA BEACH 34 X X( X) X( X) 4( 4) 15(19) 2(21) 1(22) DAYTONA BEACH 50 X X( X) X( X) X( X) 3( 3) X( 3) 1( 4) THE VILLAGES 34 X X( X) X( X) 2( 2) 5( 7) 1( 8) X( 8) ORLANDO FL 34 X X( X) X( X) 5( 5) 11(16) 2(18) X(18) COCOA BEACH FL 34 X X( X) 1( 1) 18(19) 23(42) 3(45) X(45) COCOA BEACH FL 50 X X( X) X( X) 2( 2) 8(10) 1(11) X(11) PATRICK AFB 34 X X( X) 1( 1) 18(19) 23(42) 2(44) X(44) PATRICK AFB 50 X X( X) X( X) 2( 2) 8(10) 1(11) X(11) PATRICK AFB 64 X X( X) X( X) X( X) 1( 1) X( 1) X( 1) FT PIERCE FL 34 X X( X) 5( 5) 27(32) 17(49) 1(50) 1(51) FT PIERCE FL 50 X X( X) X( X) 5( 5) 10(15) 1(16) X(16) FT PIERCE FL 64 X X( X) X( X) X( X) 2( 2) X( 2) X( 2) W PALM BEACH 34 X X( X) 12(12) 26(38) 11(49) 1(50) X(50) W PALM BEACH 50 X X( X) X( X) 8( 8) 6(14) 1(15) X(15) W PALM BEACH 64 X X( X) X( X) 1( 1) 1( 2) X( 2) X( 2) FT LAUDERDALE 34 X X( X) 12(12) 20(32) 8(40) 1(41) X(41) FT LAUDERDALE 50 X X( X) X( X) 6( 6) 3( 9) X( 9) X( 9) FT LAUDERDALE 64 X X( X) X( X) 1( 1) X( 1) X( 1) X( 1) MIAMI FL 34 X X( X) 5( 5) 10(15) 4(19) X(19) X(19) MIAMI FL 50 X X( X) X( X) 1( 1) 2( 3) X( 3) X( 3) HOMESTEAD ARB 34 X X( X) 4( 4) 7(11) 2(13) 1(14) X(14) MARATHON FL 34 X X( X) 2( 2) 4( 6) 1( 7) X( 7) X( 7) KEY WEST FL 34 X X( X) 1( 1) 2( 3) 1( 4) X( 4) X( 4) NAPLES FL 34 X X( X) 1( 1) 4( 5) 3( 8) 1( 9) X( 9) FT MYERS FL 34 X X( X) X( X) 3( 3) 3( 6) X( 6) X( 6) VENICE FL 34 X X( X) X( X) 2( 2) 4( 6) 1( 7) X( 7) TAMPA FL 34 X X( X) X( X) 2( 2) 6( 8) X( 8) 1( 9) CEDAR KEY FL 34 X X( X) X( X) X( X) 5( 5) 1( 6) X( 6) GRAND BAHAMA 34 X 2( 2) 33(35) 34(69) 7(76) X(76) X(76) GRAND BAHAMA 50 X X( X) 4( 4) 28(32) 7(39) X(39) X(39) GRAND BAHAMA 64 X X( X) 1( 1) 7( 8) 1( 9) X( 9) X( 9) NEW PROVIDENCE 34 X 36(36) 46(82) 5(87) X(87) X(87) X(87) NEW PROVIDENCE 50 X 1( 1) 43(44) 6(50) 1(51) X(51) X(51) NEW PROVIDENCE 64 X X( X) 17(17) 2(19) X(19) X(19) X(19) ANDROS 34 X 46(46) 23(69) 1(70) 1(71) X(71) X(71) ANDROS 50 X 2( 2) 23(25) 2(27) X(27) X(27) X(27) ANDROS 64 X X( X) 8( 8) 1( 9) X( 9) X( 9) X( 9) GREAT EXUMA 34 24 70(94) 1(95) X(95) X(95) X(95) X(95) GREAT EXUMA 50 X 62(62) 7(69) X(69) X(69) X(69) X(69) GREAT EXUMA 64 X 22(22) 6(28) X(28) X(28) X(28) X(28) SAN SALVADOR 34 30 40(70) 1(71) X(71) X(71) X(71) X(71) SAN SALVADOR 50 X 7( 7) X( 7) X( 7) X( 7) X( 7) X( 7) MAYAGUANA 34 87 1(88) X(88) X(88) X(88) X(88) X(88) MAYAGUANA 50 29 2(31) X(31) X(31) X(31) X(31) X(31) GRAND TURK 34 99 X(99) X(99) X(99) X(99) X(99) X(99) GRAND TURK 50 4 X( 4) X( 4) X( 4) X( 4) X( 4) X( 4) CAMAGUEY 34 X 2( 2) 1( 3) X( 3) X( 3) X( 3) X( 3) PORT-AU-PRINCE 34 4 X( 4) X( 4) X( 4) X( 4) X( 4) X( 4) PUERTO PLATA 34 99 X(99) X(99) X(99) X(99) X(99) X(99) $$ FORECASTER BLAKE
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Hurricane Isaias Forecast Discussion Number 12
2020-07-31 06:06:33| National Hurricane Center (Atlantic)
Issued at 1200 AM EDT Fri Jul 31 2020 000 WTNT44 KNHC 310406 TCDAT4 Hurricane Isaias Special Discussion Number 12 NWS National Hurricane Center Miami FL AL092020 1200 AM EDT Fri Jul 31 2020 An Air Force Reserve Hurricane Hunter found that Isaias has become a hurricane. Maximum flight-level winds so far were 87 kt at 850 mb, with believable SFMR values of at least 65 kt. A blend of these values gives an initial wind speed of 70 kt. Some further strengthening is likely over the next 24 hours before increasing southwesterly shear could weaken the system. The intensity forecast is modified upward from 5-10 kt through 48 hours and unchanged after that time. There are no changes to the previous track forecast. Key Messages: 1. Isaias will produce heavy rains and potentially life-threatening flash flooding and mudslides across the Dominican Republic, northern Haiti, Turks and Caicos, and the Bahamas. 2. Hurricane conditions and dangerous storm surge are expected in portions of the southeastern Bahamas overnight, central and northwestern Bahamas late Friday and Saturday, and Hurricane Warnings are in effect for these areas. Preparations to protect life and property should be rushed to completion. 3. Tropical storm conditions are possible along portions of the Florida east coast beginning Saturday, and a Tropical Storm Watch is in effect. While storm surge watches are not currently needed for this area, they may be required on Friday if the forecast track shifts closer to the coast. Heavy rains associated with Isaias may begin to affect South Florida and east-Central Florida beginning late Friday night, potentially resulting in isolated flash and urban flooding, especially in low-lying and poorly drained areas. 4. There is a risk of impacts from winds, heavy rainfall, and storm surge late this weekend from the northeastern Florida coast and spreading northward along the remainder of the U.S. east coast through early next week. The details of the track and intensity forecast remain uncertain, and it is too soon to determine the magnitude and location of these potential impacts, but interests along the entire U.S. east coast should monitor the progress of Isaias and updates to the forecast. FORECAST POSITIONS AND MAX WINDS INIT 31/0400Z 20.4N 72.2W 70 KT 80 MPH 12H 31/1200Z 21.6N 73.9W 70 KT 80 MPH 24H 01/0000Z 23.5N 76.1W 75 KT 85 MPH 36H 01/1200Z 25.2N 77.8W 75 KT 85 MPH 48H 02/0000Z 26.7N 79.0W 70 KT 80 MPH 60H 02/1200Z 28.3N 79.6W 65 KT 75 MPH 72H 03/0000Z 30.0N 79.5W 65 KT 75 MPH 96H 04/0000Z 34.6N 76.8W 65 KT 75 MPH 120H 05/0000Z 42.0N 69.0W 60 KT 70 MPH $$ Forecaster Blake
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Hurricane Isaias Graphics
2020-07-31 06:00:14| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 31 Jul 2020 04:00:14 GMT Wind Speed Probabilities last updated Fri, 31 Jul 2020 04:00:14 GMT
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