EX-TROPICAL CYCLONE 20S (FERDINAND) ***FINAL BULLETIN*** PUBLIC ADVISORY #13 FORCE THIRTEEN SINGAPORE, SINGAPORE UTC SAT FEB 29 2020 ...FERDINAND DEGENERATES INTO A POST-TROPICAL CYCLONE... SUMMARY OF 0600 UTC...INFORMATION ----------------------------------- LOCATION...NEAR 15.6 S 111.3 E MAXIMUM SUSTAINED WINDS...40MPH...65KM/H MINIMUM CENTRAL PRESSURE...998MB WATCHES AND WARNINGS ----------------------------------- NO WARNINGS IN EFFECT.
DISCUSSION ----------------------------------- Tropical Storm Ferdinand continues to weaken after a strengthening phase 12 hours ago as it continues northwestward slowly in the open waters of the Western Region, and is now considered post-tropical. This system is still producing some convection over at the center of the system, but it appears that there is a significant easterly mid to high level shear that is stripping the higher cloudtops while Ferdinand continues to succumb under dry environment. Latest microwave pass indicated that this system have ingested dry air and is spiralling into the center of the system from the north. Wind shear remains at 5-10KTS and expected to remain 10KTS, low for tropical development. Sea surface temperatures, despite this, remains favorable for tropical development at 29C and expected to remain this way as it moves northwest slowly in the open waters of the Western Region. The main demise for Ferdinand would be low relative humidity, which is in unfavorable levels of below 40%. Models are indicating that this system is expected to move towards the northwest slowly, as surface trade flow dominates, before this system is trapped in net zero steering. On the other hand, model consensus also indicates that Ferdinand is set to weaken gradually and is likely to be below tropical cyclone status by Mar 1. OFFICIAL SOURCES BELOW: Bureau of Meteorology THIS IS THE LAST REGULARLY SCHEDULED BULLETIN, NO MORE BULLETINS WILL BE ISSUED. $$ Forecaster Knack
OFFICIAL JTWC FORECAST
