已命名Yvette。
IDW27600 TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION Issued by PERTH TROPICAL CYCLONE WARNING CENTRE at: 0657 UTC 21/12/2016 Name: Tropical Cyclone Yvette Identifier: 07U Data At: 0600 UTC Latitude: 14.5S Longitude: 114.0E Location Accuracy: within 30 nm [55 km] Movement Towards: Slow moving Speed of Movement: Slow moving Maximum 10-Minute Wind: 40 knots [75 km/h] Maximum 3-Second Wind Gust: 55 knots [100 km/h] Central Pressure: 987 hPa Radius of 34-knot winds NE quadrant: 60 nm [110 km] Radius of 34-knot winds SE quadrant: 90 nm [165 km] Radius of 34-knot winds SW quadrant: 90 nm [165 km] Radius of 34-knot winds NW quadrant: 90 nm [165 km] Radius of 48-knot winds NE quadrant: Radius of 48-knot winds SE quadrant: Radius of 48-knot winds SW quadrant: Radius of 48-knot winds NW quadrant: Radius of 64-knot winds: Radius of Maximum Winds: 20 nm [35 km] Dvorak Intensity Code: T3.0/3.0/D0.5/24HRS STT:S0.0/06HRS Pressure of outermost isobar: 1000 hPa Radius of outermost closed isobar: 210 nm [390 km] FORECAST DATA Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure [UTC] : degrees : nm [km]: knots[km/h]: hPa +06: 21/1200: 14.5S 114.2E: 040 [080]: 040 [075]: 988 +12: 21/1800: 14.4S 114.4E: 055 [100]: 045 [085]: 985 +18: 22/0000: 14.2S 114.3E: 065 [125]: 045 [085]: 985 +24: 22/0600: 14.1S 114.4E: 080 [145]: 045 [085]: 985 +36: 22/1800: 13.7S 114.8E: 100 [180]: 050 [095]: 982 +48: 23/0600: 13.9S 115.7E: 120 [220]: 050 [095]: 983 +60: 23/1800: 14.3S 116.9E: 140 [255]: 055 [100]: 980 +72: 24/0600: 16.0S 117.9E: 155 [290]: 060 [110]: 977 +96: 25/0600: 18.8S 120.0E: 200 [370]: 060 [110]: 975 +120: 26/0600: 21.6S 122.8E: 290 [535]: 025 [045]: 999 REMARKS: Tropical Cyclone Yvette has developed to the north of Western Australia. The system was located using an ASCAT pass at 0133 UTC and the latest visible imagery. Deep convection developed overnight and persisted during the morning and early afternoon to the northwest and southwest of the centre. Using a shear pattern DTs of 3.0 were obtained with the centre <0.5 from edge. MET was 3.0 with a recent D trend. PAT was 3.0. FT/CI set to 3.0 with intensity set to 40 knots. CIMSS ADT had a CI of 3.5 at 0500 UTC. NESDIS ADT was 3.1 at 0400 UTC. The ASCAT pass at 0133 UTC showed gales wrapping around the centre in the southwest and northwest quadrants with no information in the other quadrants. Recent motion continues to be slow. Shear analysis at 00 UTC showed strong shear from the ENE [-30 knots], there is upper level divergence over southern quadrants only and wind fields show little outflow in northern quadrants. Shear may decrease later on Wednesday or on Thursday, allowing conditions to become more favourable for development. SSTs are around 29C with 29C to 31C along the forecast track. The system is expected to be slow moving before tracking towards the southeast from Friday and approaching the Pilbara/West Kimberley coast over the Christmas weekend. There is considerable model variation on the movement and intensity of the system, particularly in the longer term. The movement of a tropical low over the Kimberley, then through central parts of WA may influence the development and track of 07U. Copyright Commonwealth of Australia == The next bulletin for this system will be issued by: 21/1330 UTC by Perth TCWC. 澳洲不用西北澳，因為有個州就叫西澳。 |
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