870
WTNT41 KNHC 280838
TCDAT1
POST-TROPICAL CYCLONE FERNAND DISCUSSION NUMBER 19
NWS NATIONAL HURRICANE CENTER MIAMI FL AL062025
900 AM GMT THU AUG 28 2025
IT HAS NOW BEEN MORE THAN 12 HOURS SINCE FERNAND HAS PRODUCED WHAT
COULD BE CONSIDERED ORGANIZED DEEP CONVECTION NEAR ITS CENTER, AND
NOW THAT THE CYCLONE HAS MOVED NORTH OF THE GULF STREAM, THIS
ACTIVITY IS VERY UNLIKELY TO COME BACK. THEREFORE, FERNAND IS NOW
CONSIDERED A POST-TROPICAL CYCLONE, AND THIS WILL BE THE FINAL NHC
ADVISORY ON THE SYSTEM. THE MAXIMUM SUSTAINED WINDS HAVE BEEN
LOWERED TO 40 KT, ASSUMING THERE HAS BEEN SOME SPIN-DOWN OF THE
WINDS RELATIVE TO THE EARLIER SCATTEROMETER DATA, GIVEN THE LACK OF
DEEP CONVECTION. THE SYSTEM IS CONTINUING TO ACCELERATE
EAST-NORTHEASTWARD, NOW AT 060/20 KT, AND THIS MOTION SHOULD
CONTINUE UNTIL THE POST-TROPICAL CYCLONE OPENS UP INTO A TROUGH IN
ABOUT 24-36 HOURS. THIS SYSTEM WILL ULTIMATELY BECOME ABSORBED BY A
LARGER MID-LATITUDE CYCLONE FORECAST TO DEVELOP IN THE FAR NORTH
ATLANTIC.
ADDITIONAL INFORMATION ON THIS SYSTEM, INCLUDING GALE WARNINGS, CAN
BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE, UNDER AWIPS HEADER NFDHSFAT1, WMO HEADER FZNT01 KWBC, AND
ONLINE AT OCEAN.WEATHER.GOV/SHTML/NFDHSFAT1.PHP
FORECAST POSITIONS AND MAX WINDS
INIT 28/0900Z 41.2N 42.9W 40 KT 45 MPH...POST-TROPICAL
12H 28/1800Z 42.7N 38.7W 35 KT 40 MPH...POST-TROPICAL
24H 29/0600Z 44.9N 31.5W 35 KT 40 MPH...POST-TROPICAL
36H 29/1800Z...DISSIPATED
FORECASTER PAPIN
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