000 WTPZ41 KNHC 170834 TCDEP1 POST-TROPICAL CYCLONE ALVIN DISCUSSION NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL EP012013 200 AM PDT FRI MAY 17 2013 ASCAT AND OSCAT DATA SHOW THAT ALVIN LACKS A CLOSED CIRCULATION IN ITS WESTERN SEMICIRCLE. THE LATEST SATELLITE IMAGES ALSO INDICATE THAT THE SYSTEM HAS BECOME ELONGATED WITHOUT A WELL-DEFINED CENTER AND FURTHER EMBEDDED WITHIN THE ITCZ. THEREFORE...ALVIN IS NO LONGER A TROPICAL CYCLONE...AND THIS IS THE LAST ADVISORY. ALTHOUGH THE REMNANTS WILL BE OVER WARM WATER FOR THE NEXT COUPLE OF DAYS...THE GLOBAL MODELS GENERALLY SHOW PERSISTENT WESTERLY SHEAR...WHICH WILL LIKELY INHIBIT ANY REGENERATION ATTEMPTS. FOR ADDITIONAL INFORMATION ON THIS SYSTEM PLEASE SEE HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS HEADER NFDHSFEPI AND WMO HEADER FZPN01 KWBC. FORECAST POSITIONS AND MAX WINDS INIT 17/0900Z 10.3N 112.0W 30 KT 35 MPH 12H 17/1800Z...DISSIPATED $$ FORECASTER BLAKE