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Post-Tropical Cyclone Ana Forecast Advisory Number 8
2021-05-24 04:38:40| National Hurricane Center (Atlantic)
Issued at 0300 UTC MON MAY 24 2021 000 WTNT21 KNHC 240238 TCMAT1 POST-TROPICAL CYCLONE ANA FORECAST/ADVISORY NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL AL012021 0300 UTC MON MAY 24 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. POST-TROPICAL CYCLONE CENTER LOCATED NEAR 38.3N 55.2W AT 24/0300Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 24 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 30SE 0SW 0NW. 12 FT SEAS.. 0NE 60SE 30SW 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 38.3N 55.2W AT 24/0300Z AT 24/0000Z CENTER WAS LOCATED NEAR 37.5N 56.7W FORECAST VALID 24/1200Z 41.0N 50.5W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 25/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 38.3N 55.2W THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON ANA. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC. $$ FORECASTER REINHART/BROWN
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Tropical Depression Ana Forecast Discussion Number 7
2021-05-23 22:43:41| National Hurricane Center (Atlantic)
Issued at 500 PM AST Sun May 23 2021 000 WTNT41 KNHC 232043 TCDAT1 Tropical Depression Ana Discussion Number 7 NWS National Hurricane Center Miami FL AL012021 500 PM AST Sun May 23 2021 Other than brief puff of convection late this morning, tiny Ana has been devoid of organized deep convection for several hours. ASCAT overpass data from this morning indicated that the peak winds had deceased to 35 kt. Due to the lack of convection since that time, it is reasonable to assume that the vortex has spun down a bit, and therefore the initial advisory intensity has been lowered to 30 kt. Ana is over cool waters and surrounded by very dry air in the mid-troposphere. The brief convection that did occur today was quickly stripped away, indicating that the anticipated increase in shear has begun. Satellite imagery suggests that the circulation of Ana is approaching a strong subtropical upper-level jet just to its east, which is expected to produce even stronger shear over the cyclone. These conditions should prevent further convection, if any, from surviving, and the cyclone is expected to degenerate into a remnant low by tonight. What is left of Ana's low-level circulation should open into a trough on Monday as it is absorbed by a large baroclinic zone approaching from the northwest. The depression continues to accelerate northeastward, and the forward motion is now northeastward at 15 kt. An accelerating northwestward motion is anticipated until dissipation as Ana gets caught up in increasing deep-layer southwesterly flow. FORECAST POSITIONS AND MAX WINDS INIT 23/2100Z 37.5N 57.7W 30 KT 35 MPH 12H 24/0600Z 39.4N 53.9W 30 KT 35 MPH...POST-TROP/REMNT LOW 24H 24/1800Z...DISSIPATED $$ Forecaster Latto
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Tropical Depression Ana Forecast Advisory Number 7
2021-05-23 22:42:10| National Hurricane Center (Atlantic)
Issued at 2100 UTC SUN MAY 23 2021 000 WTNT21 KNHC 232042 TCMAT1 TROPICAL DEPRESSION ANA FORECAST/ADVISORY NUMBER 7 NWS NATIONAL HURRICANE CENTER MIAMI FL AL012021 2100 UTC SUN MAY 23 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 37.5N 57.7W AT 23/2100Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 15 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 12 FT SEAS.. 60NE 90SE 60SW 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 37.5N 57.7W AT 23/2100Z AT 23/1800Z CENTER WAS LOCATED NEAR 36.8N 58.9W FORECAST VALID 24/0600Z 39.4N 53.9W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 24/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 37.5N 57.7W NEXT ADVISORY AT 24/0300Z $$ FORECASTER LATTO
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Tropical Storm Ana Forecast Discussion Number 6
2021-05-23 16:42:33| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Sun May 23 2021 000 WTNT41 KNHC 231442 TCDAT1 Tropical Storm Ana Discussion Number 6 NWS National Hurricane Center Miami FL AL012021 1100 AM AST Sun May 23 2021 Ana is barely holding on as a tropical cyclone this morning, as the core of the system has become devoid of organized deep convection. A recent ASCAT overpass showed that wind field is slowly weakening, with peak winds of 35 kt located just to the southeast of the center. Based on this data, the initial advisory intensity has also been decreased to 35 kt. The cyclone is currently located over cool SSTs of about 20 degrees C and surrounded by very dry air in the mid-troposphere. The environmental conditions will only become more hostile through tonight, as Ana gets caught between a digging mid- to upper-level trough to its northwest and a strong subtropical upper-level jet to its southeast. These features will impart increasing southwesterly shear over the system by later today, and any convection that tries to regenerate should be stripped away. Whatever is left of Ana's low-level circulation should then open into a trough on Monday as it becomes absorbed by a large approaching baroclinic zone associated with the upper-trough. The storm is now moving northeastward at 12 kt, and an accelerating forward speed is anticipated until dissipation as Ana gets caught up in increasing deep-layered southwesterly flow. FORECAST POSITIONS AND MAX WINDS INIT 23/1500Z 36.6N 59.4W 35 KT 40 MPH 12H 24/0000Z 38.0N 56.7W 35 KT 40 MPH 24H 24/1200Z 41.7N 50.3W 35 KT 40 MPH...POST-TROPICAL 36H 25/0000Z...DISSIPATED $$ Forecaster Latto
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Tropical Storm Ana Forecast Advisory Number 6
2021-05-23 16:41:35| National Hurricane Center (Atlantic)
Issued at 1500 UTC SUN MAY 23 2021 973 WTNT21 KNHC 231441 TCMAT1 TROPICAL STORM ANA FORECAST/ADVISORY NUMBER 6 NWS NATIONAL HURRICANE CENTER MIAMI FL AL012021 1500 UTC SUN MAY 23 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 36.6N 59.4W AT 23/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 30SE 0SW 0NW. 12 FT SEAS.. 60NE 90SE 60SW 30NW. 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 36.6N 59.4W AT 23/1500Z AT 23/1200Z CENTER WAS LOCATED NEAR 36.1N 60.3W FORECAST VALID 24/0000Z 38.0N 56.7W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 30SE 0SW 0NW. FORECAST VALID 24/1200Z 41.7N 50.3W...POST-TROPICAL MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 30SE 0SW 0NW. FORECAST VALID 25/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 36.6N 59.4W NEXT ADVISORY AT 23/2100Z $$ FORECASTER LATTO
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