863  
WTPZ42 KNHC 112033  
TCDEP2  
 
POST-TROPICAL CYCLONE ALETTA DISCUSSION NUMBER 25  
NWS NATIONAL HURRICANE CENTER MIAMI FL EP022018  
200 PM PDT MON JUN 11 2018  
 
THE DEPRESSION HAS DEGENERATED INTO A REMNANT LOW PRESSURE SYSTEM  
DUE TO THE LACK OF ANY CONVECTION DURING THE PAST 14 HOURS, AND IS  
MAINLY A LARGE SWIRL OF COLD-AIR STRATOCUMULUS CLOUDS NOW. THE  
INITIAL INTENSITY OF 30 KT IS BASED ON A FEW 29- TO 30-KT WIND  
VECTORS NOTED IN RECENT 1703Z AND 1803Z ASCAT OVERPASSES. FURTHER  
WEAKENING AND GRADUAL SPIN DOWN OF THE WIND FIELD IS EXPECTED WHILE  
THE CYCLONE MOVES SLOWLY WEST-SOUTHWESTWARD OVER SUB-26 DEG C WATERS  
DURING THE NEXT SEVERAL DAYS, WITH DISSIPATION FORECAST TO OCCUR BY  
DAY 5, IF NOT SOONER.  
 
THIS IS THE LAST ADVISORY ON THIS SYSTEM ISSUED BY THE NATIONAL  
HURRICANE CENTER. FOR ADDITIONAL INFORMATION ON THE REMNANT LOW  
PLEASE SEE HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER  
SERVICE...UNDER AWIPS HEADER NFDHSFEPI AND WMO HEADER FZPN02 KWBC.  
 
FORECAST POSITIONS AND MAX WINDS  
 
INIT 11/2100Z 16.6N 118.3W 30 KT 35 MPH...POST-TROP/REMNT LOW  
12H 12/0600Z 16.4N 119.0W 25 KT 30 MPH...POST-TROP/REMNT LOW  
24H 12/1800Z 16.3N 119.7W 25 KT 30 MPH...POST-TROP/REMNT LOW  
36H 13/0600Z 16.1N 120.0W 20 KT 25 MPH...POST-TROP/REMNT LOW  
48H 13/1800Z 15.9N 120.1W 20 KT 25 MPH...POST-TROP/REMNT LOW  
72H 14/1800Z 15.9N 120.0W 15 KT 15 MPH...POST-TROP/REMNT LOW  
96H 15/1800Z 15.9N 119.9W 15 KT 15 MPH...POST-TROP/REMNT LOW  
120H 16/1800Z...DISSIPATED  
 

 
FORECASTER STEWART  
 
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