609
WTPZ43 KNHC 111435
TCDEP3
POST-TROPICAL CYCLONE COSME DISCUSSION NUMBER 13
NWS NATIONAL HURRICANE CENTER MIAMI FL EP032025
800 AM MST WED JUN 11 2025
DRIER MID-LEVEL AIR AND STABLE ATMOSPHERIC CONDITIONS HAVE TAKEN
THEIR TOLL ON COSME. THE SYSTEM HAS BEEN DEVOID OF DEEP CONVECTION
FOR MORE THAN 12 HOURS, WITH ONLY A SWIRL OF LOW- TO MID-LEVEL
CLOUDS EVIDENT ON SATELLITE IMAGERY. THE INITIAL INTENSITY HAS
BEEN LOWERED TO 30 KT. GIVEN THE HOSTILE ENVIRONMENT AND ONGOING
LACK OF CONVECTION, COSME IS NOT EXPECTED TO REDEVELOP, AND THIS
WILL BE THE FINAL ADVISORY.
THE LOW IS NOW MOVING TOWARD THE EAST-NORTHEAST AT ABOUT 070/6 KT.
GLOBAL MODEL GUIDANCE INDICATES A GRADUAL TURN TOWARD THE
NORTH-NORTHEAST LATER TODAY, FOLLOWED BY A TURN TO THE NORTH ON
THURSDAY, AS THE SYSTEM STEADILY SPINS DOWN AND DISSIPATES OVER THE
NEXT DAY OR SO.
FOR ADDITIONAL INFORMATION ON THE REMNANT LOW PLEASE SEE HIGH SEAS
FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE, UNDER AWIPS
HEADER NFDHSFEPI, WMO HEADER FZPN02 KWBC, AND ON THE WEB AT
OCEAN.WEATHER.GOV/SHTML/NFDHSFEPI.PHP
FORECAST POSITIONS AND MAX WINDS
INIT 11/1500Z 16.4N 113.7W 30 KT 35 MPH...POST-TROP/REMNT LOW
12H 12/0000Z 17.0N 113.5W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 12/1200Z 17.8N 113.3W 20 KT 25 MPH...POST-TROP/REMNT LOW
36H 13/0000Z...DISSIPATED
FORECASTER KELLY/GIBBS
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