FMS T5.0 70KT TROPICAL CYCLONE VAIANU CENTRE 960HPA CATEGORY 3 WAS LOCATED NEAR 16.0S 173.3E AT 060600 UTC. POSITION FAIR BASED ON HIMAWARI IR IMAGERY AND PERIPHERAL SURFACE REPORTS. CYCLONE MOVING SOUTHEAST AT ABOUT 04 KNOTS. MAXIMUM 10-MINUTE AVERAGE WINDS NEAR THE CENTRE ESTIMATED AT ABOUT 70 KNOTS. EXPECT WINDS OVER 63 KNOTS WITHIN 35 NAUTICAL MILES OF CENTRE AND EXPECT WINDS OVER 47 KNOTS WITHIN 40 NAUTICAL MILES OF CENTRE AND EXPECT WINDS OVER 33 KNOTS WITHIN 100 NAUTICAL MILES IN NE QUADRANT AND WITHIN 100 NAUTICAL MILES IN SE QUADRANT AND WITHIN 100 NAUTICAL MILES IN SW QUADRANT AND WITHIN 100 NAUTICAL MILES IN NW QUADRANT DEEP CONVECTION REMAINS PERSISTENT OVER THE LLCC AND ORGANIZATION CONTINUES TO IMPROVE WITH INDICATIONS OF AN EYE FORMING. CYCLONIC CIRCULATION EXTENDS UP TO 300HPA. SYSTEM LIES IN A GOOD UPPER DIVERGENT AREA WITH A GOOD POLEWARD OUTFLOW. CYCLONE LIES IN A LOW SHEARED ENVIRONMENT. SST AOUND 29 DEGREES CELSIUS. DVORAK ANALYSIS BASED ON EYE PATTERN WITH BLACK SURROUND AND LIGHT GREY EYE YEILDING DT=5.0, PT=4.5 MET=3.5. FT BASED ON PT. THUS, YEILDING T5.0/5.0/D2.0/24HRS.
TPPS11 PGTW 060900 A. TROPICAL CYCLONE 31P (VAIANU) B. 06/0830Z C. 16.00S D. 173.48E E. FIVE/HMWRI9 F. T5.0/5.0/D1.5/24HRS STT: S0.0/03HRS G. IR/EIR H. REMARKS: 71A/PBO XTRP/ANMTN. LLCC EMBEDDED IN W YIELDS A DT OF 5.0. MET AND PT AGREE. DBO DT. I. ADDITIONAL POSITIONS: NONE RUCKER