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Tropical Depression Nine Wind Speed Probabilities Number 1
2021-08-26 16:46:00| National Hurricane Center (Atlantic)
Issued at 1500 UTC THU AUG 26 2021 000 FONT14 KNHC 261445 PWSAT4 TROPICAL DEPRESSION NINE WIND SPEED PROBABILITIES NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092021 1500 UTC THU AUG 26 2021 AT 1500Z THE CENTER OF TROPICAL DEPRESSION NINE WAS LOCATED NEAR LATITUDE 16.9 NORTH...LONGITUDE 79.2 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 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 THU 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 THU 00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON PERIODS TO TO TO TO TO TO TO 00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON 12Z TUE FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT FT LAUDERDALE 34 X X( X) 1( 1) 2( 3) X( 3) X( 3) X( 3) MARATHON FL 34 X 1( 1) 5( 6) 3( 9) 1(10) X(10) X(10) KEY WEST FL 34 X 1( 1) 8( 9) 5(14) 2(16) X(16) X(16) NAPLES FL 34 X X( X) 3( 3) 6( 9) 2(11) X(11) X(11) FT MYERS FL 34 X X( X) 1( 1) 2( 3) 1( 4) X( 4) X( 4) VENICE FL 34 X X( X) 1( 1) 8( 9) 4(13) X(13) X(13) TAMPA FL 34 X X( X) X( X) 5( 5) 3( 8) X( 8) X( 8) CEDAR KEY FL 34 X X( X) X( X) 2( 2) 4( 6) X( 6) X( 6) TALLAHASSEE FL 34 X X( X) X( X) X( X) 2( 2) 1( 3) 1( 4) ST MARKS FL 34 X X( X) X( X) X( X) 3( 3) X( 3) 1( 4) APALACHICOLA 34 X X( X) X( X) 1( 1) 14(15) 2(17) X(17) GFMX 290N 850W 34 X X( X) X( X) 5( 5) 15(20) 2(22) X(22) PANAMA CITY FL 34 X X( X) X( X) 1( 1) 15(16) 3(19) 1(20) DESTIN EXEC AP 34 X X( X) X( X) X( X) 7( 7) 6(13) 2(15) COLUMBUS GA 34 X X( X) X( X) X( X) 1( 1) 1( 2) 1( 3) BIRMINGHAM AL 34 X X( X) X( X) X( X) 1( 1) 3( 4) 3( 7) MONTGOMERY AL 34 X X( X) X( X) X( X) 2( 2) 4( 6) 2( 8) WHITING FLD FL 34 X X( X) X( X) X( X) 8( 8) 8(16) 2(18) PENSACOLA FL 34 X X( X) X( X) X( X) 10(10) 9(19) 2(21) PENSACOLA FL 50 X X( X) X( X) X( X) 1( 1) 1( 2) 1( 3) GFMX 290N 870W 34 X X( X) X( X) 4( 4) 38(42) 3(45) 1(46) GFMX 290N 870W 50 X X( X) X( X) X( X) 9( 9) 2(11) X(11) GFMX 290N 870W 64 X X( X) X( X) X( X) 3( 3) X( 3) X( 3) MOBILE AL 34 X X( X) X( X) X( X) 13(13) 14(27) 3(30) MOBILE AL 50 X X( X) X( X) X( X) 2( 2) 3( 5) 1( 6) MOBILE AL 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) GULFPORT MS 34 X X( X) X( X) X( X) 18(18) 20(38) 4(42) GULFPORT MS 50 X X( X) X( X) X( X) 4( 4) 7(11) 2(13) GULFPORT MS 64 X X( X) X( X) X( X) 1( 1) 3( 4) 1( 5) STENNIS MS 34 X X( X) X( X) X( X) 21(21) 23(44) 4(48) STENNIS MS 50 X X( X) X( X) X( X) 5( 5) 10(15) 2(17) STENNIS MS 64 X X( X) X( X) X( X) 1( 1) 4( 5) 1( 6) BURAS LA 34 X X( X) X( X) X( X) 37(37) 18(55) 3(58) BURAS LA 50 X X( X) X( X) X( X) 10(10) 12(22) 1(23) BURAS LA 64 X X( X) X( X) X( X) 4( 4) 6(10) X(10) GFMX 280N 890W 34 X X( X) X( X) 4( 4) 71(75) 7(82) X(82) GFMX 280N 890W 50 X X( X) X( X) X( X) 44(44) 7(51) 1(52) GFMX 280N 890W 64 X X( X) X( X) X( X) 23(23) 6(29) X(29) JACKSON MS 34 X X( X) X( X) X( X) 5( 5) 22(27) 9(36) JACKSON MS 50 X X( X) X( X) X( X) X( X) 5( 5) 4( 9) JACKSON MS 64 X X( X) X( X) X( X) X( X) 1( 1) 1( 2) NEW ORLEANS LA 34 X X( X) X( X) X( X) 27(27) 28(55) 6(61) NEW ORLEANS LA 50 X X( X) X( X) X( X) 6( 6) 18(24) 3(27) NEW ORLEANS LA 64 X X( X) X( X) X( X) 2( 2) 7( 9) 2(11) GFMX 280N 910W 34 X X( X) X( X) 1( 1) 60(61) 18(79) 1(80) GFMX 280N 910W 50 X X( X) X( X) X( X) 30(30) 22(52) 1(53) GFMX 280N 910W 64 X X( X) X( X) X( X) 16(16) 15(31) 1(32) BATON ROUGE LA 34 X X( X) X( X) X( X) 17(17) 38(55) 8(63) BATON ROUGE LA 50 X X( X) X( X) X( X) 4( 4) 21(25) 5(30) BATON ROUGE LA 64 X X( X) X( X) X( X) 1( 1) 8( 9) 2(11) MORGAN CITY LA 34 X X( X) X( X) X( X) 27(27) 35(62) 6(68) MORGAN CITY LA 50 X X( X) X( X) X( X) 7( 7) 24(31) 3(34) MORGAN CITY LA 64 X X( X) X( X) X( X) 2( 2) 10(12) 2(14) ALEXANDRIA LA 34 X X( X) X( X) X( X) 7( 7) 35(42) 12(54) ALEXANDRIA LA 50 X X( X) X( X) X( X) 1( 1) 14(15) 5(20) ALEXANDRIA LA 64 X X( X) X( X) X( X) X( X) 5( 5) 1( 6) LAFAYETTE LA 34 X X( X) X( X) X( X) 16(16) 41(57) 9(66) LAFAYETTE LA 50 X X( X) X( X) X( X) 3( 3) 23(26) 6(32) LAFAYETTE LA 64 X X( X) X( X) X( X) X( X) 11(11) 3(14) NEW IBERIA LA 34 X X( X) X( X) X( X) 17(17) 42(59) 8(67) NEW IBERIA LA 50 X X( X) X( X) X( X) 4( 4) 24(28) 5(33) NEW IBERIA LA 64 X X( X) X( X) X( X) X( X) 12(12) 2(14) GFMX 280N 930W 34 X X( X) X( X) X( X) 26(26) 27(53) 3(56) GFMX 280N 930W 50 X X( X) X( X) X( X) 7( 7) 19(26) 2(28) GFMX 280N 930W 64 X X( X) X( X) X( X) 3( 3) 12(15) 1(16) SHREVEPORT LA 34 X X( X) X( X) X( X) 1( 1) 22(23) 10(33) SHREVEPORT LA 50 X X( X) X( X) X( X) X( X) 5( 5) 5(10) FORT POLK LA 34 X X( X) X( X) X( X) 6( 6) 34(40) 10(50) FORT POLK LA 50 X X( X) X( X) X( X) 1( 1) 15(16) 6(22) FORT POLK LA 64 X X( X) X( X) X( X) X( X) 6( 6) 2( 8) LAKE CHARLES 34 X X( X) X( X) X( X) 9( 9) 37(46) 9(55) LAKE CHARLES 50 X X( X) X( X) X( X) 1( 1) 21(22) 6(28) LAKE CHARLES 64 X X( X) X( X) X( X) X( X) 9( 9) 3(12) CAMERON LA 34 X X( X) X( X) X( X) 17(17) 37(54) 5(59) CAMERON LA 50 X X( X) X( X) X( X) 3( 3) 24(27) 4(31) CAMERON LA 64 X X( X) X( X) X( X) 1( 1) 12(13) 2(15) JASPER TX 34 X X( X) X( X) X( X) 4( 4) 29(33) 9(42) JASPER TX 50 X X( X) X( X) X( X) 1( 1) 12(13) 4(17) JASPER TX 64 X X( X) X( X) X( X) X( X) 4( 4) 3( 7) KOUNTZE TX 34 X X( X) X( X) X( X) 4( 4) 28(32) 7(39) KOUNTZE TX 50 X X( X) X( X) X( X) 1( 1) 11(12) 4(16) KOUNTZE TX 64 X X( X) X( X) X( X) X( X) 5( 5) 3( 8) PORT ARTHUR TX 34 X X( X) X( X) X( X) 6( 6) 31(37) 6(43) PORT ARTHUR TX 50 X X( X) X( X) X( X) 1( 1) 14(15) 4(19) PORT ARTHUR TX 64 X X( X) X( X) X( X) X( X) 7( 7) 2( 9) GALVESTON TX 34 X X( X) X( X) X( X) 7( 7) 24(31) 4(35) GALVESTON TX 50 X X( X) X( X) X( X) 1( 1) 11(12) 2(14) GALVESTON TX 64 X X( X) X( X) X( X) X( X) 6( 6) 1( 7) HOUSTON TX 34 X X( X) X( X) X( X) 2( 2) 16(18) 5(23) HOUSTON TX 50 X X( X) X( X) X( X) X( X) 6( 6) 2( 8) HOUSTON TX 64 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) AUSTIN TX 34 X X( X) X( X) X( X) X( X) 5( 5) 1( 6) SAN ANTONIO TX 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) FREEPORT TX 34 X X( X) X( X) X( X) 2( 2) 15(17) 4(21) FREEPORT TX 50 X X( X) X( X) X( X) X( X) 4( 4) 1( 5) FREEPORT TX 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) GFMX 280N 950W 34 X X( X) X( X) X( X) 6( 6) 17(23) 2(25) GFMX 280N 950W 50 X X( X) X( X) X( X) 1( 1) 5( 6) 1( 7) GFMX 280N 950W 64 X X( X) X( X) X( X) X( X) 3( 3) 1( 4) HIGH ISLAND TX 34 X X( X) X( X) X( X) 4( 4) 27(31) 5(36) HIGH ISLAND TX 50 X X( X) X( X) X( X) 1( 1) 12(13) 3(16) HIGH ISLAND TX 64 X X( X) X( X) X( X) X( X) 6( 6) 2( 8) MATAGORDA TX 34 X X( X) X( X) X( X) 3( 3) 13(16) 3(19) MATAGORDA TX 50 X X( X) X( X) X( X) X( X) 4( 4) X( 4) MATAGORDA TX 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) PORT O CONNOR 34 X X( X) X( X) X( X) 1( 1) 11(12) 3(15) PORT O CONNOR 50 X X( X) X( X) X( X) X( X) 3( 3) X( 3) PORT O CONNOR 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) ROCKPORT TX 34 X X( X) X( X) X( X) X( X) 5( 5) 1( 6) CORPUS CHRISTI 34 X X( X) X( X) X( X) X( X) 4( 4) X( 4) GFMX 270N 960W 34 X X( X) X( X) X( X) 1( 1) 8( 9) 2(11) GFMX 270N 960W 50 X X( X) X( X) X( X) X( X) 2( 2) X( 2) GFMX 270N 960W 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) GFMX 250N 960W 34 X X( X) X( X) X( X) 1( 1) 3( 4) 1( 5) COZUMEL MX 34 X X( X) 1( 1) 3( 4) 1( 5) 1( 6) X( 6) CP SAN ANTONIO 34 X 1( 1) 15(16) 11(27) 2(29) X(29) X(29) CP SAN ANTONIO 50 X X( X) 2( 2) 4( 6) X( 6) X( 6) X( 6) CP SAN ANTONIO 64 X X( X) X( X) 1( 1) X( 1) X( 1) X( 1) HAVANA 34 X 3( 3) 32(35) 4(39) 1(40) X(40) X(40) HAVANA 50 X X( X) 3( 3) 1( 4) X( 4) X( 4) X( 4) ISLE OF PINES 34 X 16(16) 47(63) 1(64) X(64) X(64) X(64) ISLE OF PINES 50 X 1( 1) 14(15) X(15) X(15) X(15) X(15) ISLE OF PINES 64 X X( X) 2( 2) X( 2) X( 2) X( 2) X( 2) CIENFUEGOS 34 X 1( 1) 2( 3) 1( 4) X( 4) X( 4) X( 4) GRAND CAYMAN 34 1 45(46) X(46) X(46) X(46) X(46) X(46) GRAND CAYMAN 50 X 6( 6) X( 6) X( 6) X( 6) X( 6) X( 6) GRAND CAYMAN 64 X 1( 1) X( 1) X( 1) X( 1) X( 1) X( 1) $$ FORECASTER BROWN
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Summary for Tropical Depression Nine (AT4/AL092021)
2021-08-26 16:45:29| National Hurricane Center (Atlantic)
...TROPICAL DEPRESSION FORMS OVER THE WEST-CENTRAL CARIBBEAN SEA... ...TROPICAL STORM WARNINGS ISSUED FOR THE CAYMAN ISLANDS AND PORTIONS OF WESTERN CUBA... As of 11:00 AM EDT Thu Aug 26 the center of Nine was located near 16.9, -79.2 with movement NW at 13 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 35 mph.
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Tropical Depression Nine Public Advisory Number 1
2021-08-26 16:45:29| National Hurricane Center (Atlantic)
Issued at 1100 AM EDT Thu Aug 26 2021 000 WTNT34 KNHC 261445 TCPAT4 BULLETIN Tropical Depression Nine Advisory Number 1 NWS National Hurricane Center Miami FL AL092021 1100 AM EDT Thu Aug 26 2021 ...TROPICAL DEPRESSION FORMS OVER THE WEST-CENTRAL CARIBBEAN SEA... ...TROPICAL STORM WARNINGS ISSUED FOR THE CAYMAN ISLANDS AND PORTIONS OF WESTERN CUBA... SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...16.9N 79.2W ABOUT 115 MI...180 KM SSW OF NEGRIL JAMAICA ABOUT 210 MI...340 KM SE OF GRAND CAYMAN MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NW OR 325 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of the Cayman Islands has issued a Tropical Storm Warning for the Cayman Islands, including Grand Cayman, Little Cayman, and Cayman Brac. The government of Cuba has issued a Tropical Storm Warning for the Cuban provinces of Matanzas, Mayabeque, Havana, Artemisa, Pinar del Rio, and the Isle of Youth. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Cayman Islands * Cuban provinces of Matanzas, Mayabeque, Havana, Artemisa, Pinar del Rio, and the Isle of Youth A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. Interests elsewhere in central and western Cuba, in the northern Yucatan Peninsula, and along the northern U.S. Gulf coast should monitor the progress of this system. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM EDT (1500 UTC), the center of Tropical Depression Nine was located near latitude 16.9 North, longitude 79.2 West. The depression is moving toward the northwest near 13 mph (20 km/h), and this general motion should continue over the next few days. On the forecast track, the center of the depression will pass near of over the Cayman Islands tonight, the Isle of Youth and Western Cuba Friday, and move over the southeastern and central Gulf of Mexico Friday night and Saturday. The system is forecast to approach the U.S. northern Gulf coast on Sunday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Steady strengthening is forecast during the next few days. The depression is expected to become a tropical storm tonight, and become a hurricane when it is near western Cuba or over the southeastern Gulf of Mexico. Additional strengthening is likely over the Gulf of Mexico and the system could be near major hurricane strength when it approaches the northern Gulf coast. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Depression Nine can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC, and on the web at hurricanes.gov/graphics_at4.shtml?key_messages. STORM SURGE: A dangerous storm surge will raise water levels by as much as 2 to 4 feet above normal tide levels in areas of onshore flow along the immediate coast of the Isle of Youth and near and to the east of where the center crosses the coast of western Cuba. Near the coast, the surge will be accompanied by large and destructive waves. WIND: Tropical storm conditions are expected in the Cayman Islands tonight, and are expected to reach the Isle of Youth and portions of western Cuba in the warning area on Friday. RAINFALL: The depression is expected to produce total rainfall accumulations of 6 to 10 inches with maximum totals of 15 inches across Jamaica. Rainfall totals of 8 to 12 inches with isolated maximum amounts of 20 inches are expected across the Cayman Islands, western Cuba, including the Isle of Youth and the northeast portions of the Yucatan Peninsula. These rainfall amounts may produce life-threatening flash floods and mudslides. Rainfall from this system is likely to begin impacting portions of the central U.S. Gulf Coast by early Sunday. SURF: Swells generated by this system will begin affecting Jamaica, the Cayman Islands and Cuba tonight and Friday. 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 EDT. Next complete advisory at 500 PM EDT. $$ Forecaster Brown
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Tropical Depression Nine Forecast Advisory Number 1
2021-08-26 16:45:01| National Hurricane Center (Atlantic)
Issued at 1500 UTC THU AUG 26 2021 000 WTNT24 KNHC 261444 TCMAT4 TROPICAL DEPRESSION NINE FORECAST/ADVISORY NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092021 1500 UTC THU AUG 26 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE GOVERNMENT OF THE CAYMAN ISLANDS HAS ISSUED A TROPICAL STORM WARNING FOR THE CAYMAN ISLANDS...INCLUDING GRAND CAYMAN...LITTLE CAYMAN...AND CAYMAN BRAC. THE GOVERNMENT OF CUBA HAS ISSUED A TROPICAL STORM WARNING FOR THE CUBAN PROVINCES OF MATANZAS...MAYABEQUE...HAVANA...ARTEMISA...PINAR DEL RIO...AND THE ISLE OF YOUTH. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * CAYMAN ISLANDS * CUBAN PROVINCES OF MATANZAS...MAYABEQUE...HAVANA...ARTEMISA... PINAR DEL RIO...AND THE ISLE OF YOUTH A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS. INTERESTS ELSEWHERE IN CENTRAL AND WESTERN CUBA...IN THE NORTHERN YUCATAN PENINSULA...AND ALONG THE NORTHERN U.S. GULF COAST SHOULD MONITOR THE PROGRESS OF THIS SYSTEM. TROPICAL DEPRESSION CENTER LOCATED NEAR 16.9N 79.2W AT 26/1500Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 325 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1005 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 16.9N 79.2W AT 26/1500Z AT 26/1200Z CENTER WAS LOCATED NEAR 16.4N 79.0W FORECAST VALID 27/0000Z 18.2N 80.4W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 60NE 40SE 0SW 60NW. FORECAST VALID 27/1200Z 20.3N 82.0W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 80NE 50SE 20SW 60NW. FORECAST VALID 28/0000Z 22.5N 83.9W...OVER WESTERN CUBA MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 0SE 0SW 0NW. 34 KT... 90NE 60SE 40SW 70NW. FORECAST VALID 28/1200Z 24.4N 86.0W...OVER SOUTHEASTERN GULF MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 20NE 20SE 0SW 20NW. 50 KT... 40NE 40SE 30SW 40NW. 34 KT...110NE 80SE 60SW 90NW. FORECAST VALID 29/0000Z 26.1N 88.1W MAX WIND 80 KT...GUSTS 100 KT. 50 KT... 50NE 50SE 30SW 50NW. 34 KT...130NE 110SE 60SW 110NW. FORECAST VALID 29/1200Z 27.7N 90.0W MAX WIND 95 KT...GUSTS 115 KT. 50 KT... 50NE 50SE 30SW 50NW. 34 KT...140NE 130SE 70SW 120NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 30/1200Z 30.5N 92.0W...INLAND MAX WIND 70 KT...GUSTS 85 KT. OUTLOOK VALID 31/1200Z 33.7N 91.2W...INLAND MAX WIND 30 KT...GUSTS 40 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.9N 79.2W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 26/1800Z NEXT ADVISORY AT 26/2100Z $$ FORECASTER BROWN
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Atlantic Tropical Weather Outlook
2021-08-26 13:51:28| National Hurricane Center (Atlantic)
000 ABNT20 KNHC 261151 CCA TWOAT Tropical Weather Outlook...Corrected NWS National Hurricane Center Miami FL 800 AM EDT Thu Aug 26 2021 Corrected 5-day formation probability for the second system For the North Atlantic...Caribbean Sea and the Gulf of Mexico: Showers and thunderstorms continue to show signs of organization in association with a broad area of low pressure located over the west-central Caribbean Sea about 150 miles south-southwest of Jamaica. Environmental conditions remain conducive for additional development, and a tropical depression or tropical storm is expected to form later today or tonight while the system moves northwestward over the northwestern Caribbean Sea, reaching the Cayman Islands tonight and western Cuba and the Yucatan Channel Friday and Friday night. Given the recent developmental trends, Tropical Storm Warnings for the Cayman Islands and western Cuba could be required later this morning, and an Air Force Reserve reconnaissance aircraft is scheduled to investigate the system this afternoon. Regardless of development, locally heavy rainfall and flooding are possible over portions of Jamaica and the Cayman Islands today and tonight, and will likely spread across Cuba and the Yucatan Peninsula on Friday. The system is expected to enter into the Gulf of Mexico Friday night and continue moving northwestward toward the central or northwestern U.S. Gulf coast, potentially bringing dangerous impacts from storm surge, wind, and heavy rainfall to portions of the coasts of Texas, Louisiana, Mississippi, Alabama, and the Florida Panhandle by Sunday and Monday. However, uncertainty in the system's exact track and intensity remains large since the low is just beginning to form. Interests in these areas should closely monitor the progress of this system and ensure they have their hurricane plans in place. Additional information on this system, including gale warnings, can be found in High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. A trough of low pressure located over the central Atlantic about 600 miles east of Bermuda continues to produce disorganized showers and thunderstorms. Environmental conditions are forecast to be generally conducive for development, and a tropical depression is likely to form late this week or this weekend while the system moves slowly eastward at 5 to 10 mph. * Formation chance through 48 hours...medium...40 percent. * Formation chance through 5 days...high...70 percent. A tropical wave located over the central tropical Atlantic about 1000 miles west-southwest of the Cabo Verde Islands is producing disorganized showers and thunderstorms. Environmental conditions appear a little more conducive for development during the next few days, and a tropical depression could form by the weekend while the system moves toward the west-northwest or northwest at 10 to 15 mph. Upper-level winds could become less conducive for development by early next week. * Formation chance through 48 hours...medium...40 percent. * Formation chance through 5 days...medium...50 percent. && High Seas Forecasts issued by the National Weather Service can be found under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php $$ Forecaster Berg
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