現在仍是熱帶氣旋,即將越過南緯 30 度。 TROPICAL CYCLONE GALE WARNING 036 This affects ocean area: SUBTROPIC Tropical Cyclone OLA [995hPa] centre was located near 29.3 South 163.2 East at 031200 UTC. Position Poor. Repeat position 29.3S 163.2E at 031200 UTC. Cyclone is moving south 9 knots. Expect sustained winds of 35 knots close to the centre with very rough sea and moderate to heavy swell. Expect winds over 33 knots within 120 nautical miles of centre in the southwest semicircle and within 45 nautical miles of centre in the northeast semicircle. This warning cancels and replaces warning 032. |
Ola 成為本年度南太平洋第一個強烈熱帶氣旋,但是不看好繼續增強。 TROPICAL DISTURBANCE ADVISORY NUMBER A12 ISSUED FROM RSMC NADI Feb 01/0751 UTC 2015 UTC. SEVERE TROPICAL CYCLONE OLA 09F CATEGORY 3 CENTRE 965HPA WAS LOCATED NEAR 20.4S 162.1E AT 010600 UTC. POSITION POOR BASED ON HR GMS EIR IMAGERY AND PERIPHERAL SURFACE REPORTS. CYCLONE MOVING SOUTH-SOUTHWEST AT ABOUT 2 KNOTS. MAXIMUM 10-MINUTE AVERAGE WINDS NEAR THE CENTRE ESTIMATED AT ABOUT 70 KNOTS. EXPECT WINDS ABOVE 63 KNOTS WITHIN 20 NAUTICAL MILES OF CENTRE, ABOVE 47 KNOTS WITHIN 45 NAUTICAL MILES OF CENTRE AND ABOVE 33 KNOTS WITHIN 75 NAUTICAL MILES IN NE QUADRANT AND WITHIN 90 NAUTICAL MILES ELSEWHERE. OVERALL ORGANISATION REMAINS GOOD IN THE PAST 24 HOURS. DEEP CONVECTION REMAINS PERSISTENT IN THE LAST 24 HOURS. SYSTEM LIES UNDER AN UPPER RIDGE IN A MODERATE SHEARED ENVIRONMENT. OUTFLOW GOOD TO THE SOUTH BUT RESTRICTED ELSEWHERE. CYCLONIC CIRCULATION EXTENDS UP TO 500HPA. SST AROUND 30 DEGREES CELCIUS. DVORAK ANALYSIS BASED ON AN EMBEDDED CENTER PATTERN, LLCC EMBEDDED IN LG GIVING DT=4.5, PT AND MT AGREE. THUS, YIELDING T4.5/4.5/D1.0/24HRS. GLOBAL MODELS HAVE PICKED UP THE SYSTEM AND MOVE IT SOUTHWARDS THEN SOUTH-SOUTHWEST WITH A WEAKENING TREND. FORECASTS : AT 12 HRS VALID AT 011800 UTC 21.7S 162.1E MOV S AT 07 KT WITH 60 KT CLOSE TO CENTRE AT 24 HRS VALID AT 020600 UTC 22.8S 161.9E MOV S AT 06 KT WITH 50 KT CLOSE TO CENTRE OUTLOOK : AT 36 HRS VALID AT 021800 UTC 23.7S 161.4E MOV SSW AT 06 KT WITH 45 KT CLOSE TO CENTRE AT 48 HRS VALID AT 030600 UTC 24.5S 160.9E MOV SSW AT 05 KT WITH 35 KT CLOSE TO CENTRE THE NEXT TROPICAL DISTURBANCE ADVISORY ON OLA WILL BE ISSUED AROUND 0114000 UTC. |