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Post-Tropical Cyclone Debby Graphics
2018-08-09 22:44:40| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Thu, 09 Aug 2018 20:44:40 GMT Wind Speed Probabilities last updated Thu, 09 Aug 2018 21:25:42 GMT
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Post-Tropical Cyclone Debby Forecast Advisory Number 10
2018-08-09 22:43:53| National Hurricane Center (Atlantic)
Issued at 2100 UTC THU AUG 09 2018 481 WTNT24 KNHC 092043 CCA TCMAT4 POST-TROPICAL CYCLONE DEBBY FORECAST/ADVISORY NUMBER 10...CORRECTED NWS NATIONAL HURRICANE CENTER MIAMI FL AL042018 2100 UTC THU AUG 09 2018 CORRECTED TO REMOVE 12-HOUR FORECAST POSITION THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. POST-TROPICAL CYCLONE CENTER LOCATED NEAR 45.5N 40.5W AT 09/2100Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 20 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 90SE 0SW 0NW. 12 FT SEAS..120NE 120SE 120SW 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 45.5N 40.5W AT 09/2100Z AT 09/1800Z CENTER WAS LOCATED NEAR 45.1N 42.0W FORECAST VALID 10/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 45.5N 40.5W THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON THIS SYSTEM. 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 ZELINSKY
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Summary for Post-Tropical Cyclone Debby (AT4/AL042018)
2018-08-09 22:37:10| National Hurricane Center (Atlantic)
...DEBBY BECOMES POST-TROPICAL... ...LIKELY TO DISSIPATE TONIGHT... As of 5:00 PM AST Thu Aug 9 the center of Debby was located near 45.5, -40.5 with movement NE at 23 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 40 mph.
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Post-Tropical Cyclone Debby Public Advisory Number 10
2018-08-09 22:37:10| National Hurricane Center (Atlantic)
Issued at 500 PM AST Thu Aug 09 2018 389 WTNT34 KNHC 092036 TCPAT4 BULLETIN Post-Tropical Cyclone Debby Advisory Number 10 NWS National Hurricane Center Miami FL AL042018 500 PM AST Thu Aug 09 2018 ...DEBBY BECOMES POST-TROPICAL... ...LIKELY TO DISSIPATE TONIGHT... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...45.5N 40.5W ABOUT 865 MI...1390 KM NW OF THE AZORES MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NE OR 55 DEGREES AT 23 MPH...37 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Post-Tropical Cyclone Debby was located near latitude 45.5 North, longitude 40.5 West. The post-tropical cyclone is moving toward the northeast near 23 mph (37 km/h). This general motion is expected to continue for the next few hours until the cyclone dissipates later tonight. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Little change in strength is forecast until Debby dissipates later tonight. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- This is the last public advisory issued by the National Hurricane Center on Debby. Additional information can be found in High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and available on the Web at https://ocean.weather.gov/shtml/NFDHSFAT1.shtml. $$ Forecaster Zelinsky
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Post-Tropical Cyclone Debby Forecast Discussion Number 10
2018-08-09 22:37:10| National Hurricane Center (Atlantic)
Issued at 500 PM AST Thu Aug 09 2018 388 WTNT44 KNHC 092036 TCDAT4 Post-Tropical Cyclone Debby Discussion Number 10 NWS National Hurricane Center Miami FL AL042018 500 PM AST Thu Aug 09 2018 Debby has become post-tropical. The circulation of the cyclone has become ill defined, and it is no longer producing enough organized deep convection to be classified as a tropical cyclone. Therefore, Debby has become post-tropical, and this is the last advisory. The cyclone is accelerating northeastward ahead of a shortwave trough, and this should continue for the next few hours until Debby opens up into a trough of low pressure and merges with a larger frontal boundary later tonight. Debby is likely still producing gale-force winds to the southeast of its center, however all of the guidance indicates that these winds will gradually decrease through early tomorrow. Additional information on this system can be found in High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and available on the Web at https://ocean.weather.gov/shtml/NFDHSFAT1.shtml. FORECAST POSITIONS AND MAX WINDS INIT 09/2100Z 45.5N 40.5W 35 KT 40 MPH...POST-TROPICAL 12H 10/0600Z...DISSIPATED $$ Forecaster Zelinsky
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