|
|
Lam 算是苦盡甘來，達到四級強烈熱帶氣旋（100 節），JTWC 也評價 100 節，但馬上就要登陸，沒發展空間了。
IDD20020
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - NORTHERN REGION
Issued by DARWIN TROPICAL CYCLONE WARNING CENTRE
at: 1231 UTC 19/02/2015
Name: Severe Tropical Cyclone Lam
Identifier: 13U
Data At: 1200 UTC
Latitude: 12.0S
Longitude: 135.4E
Location Accuracy: within 10 nm [15 km]
Movement Towards: southwest [224 deg]
Speed of Movement: 5 knots [8 km/h]
Maximum 10-Minute Wind: 100 knots [185 km/h]
Maximum 3-Second Wind Gust: 140 knots [260 km/h]
Central Pressure: 943 hPa
Radius of 34-knot winds NE quadrant: 80 nm [150 km]
Radius of 34-knot winds SE quadrant: 40 nm [75 km]
Radius of 34-knot winds SW quadrant: 30 nm [55 km]
Radius of 34-knot winds NW quadrant: 80 nm [150 km]
Radius of 48-knot winds NE quadrant: 25 nm [45 km]
Radius of 48-knot winds SE quadrant: 25 nm [45 km]
Radius of 48-knot winds SW quadrant: 25 nm [45 km]
Radius of 48-knot winds NW quadrant: 25 nm [45 km]
Radius of 64-knot winds: 20 nm [35 km]
Radius of Maximum Winds: 10 nm [20 km]
Dvorak Intensity Code: T6.0/6.0/D2.0/24HRS
Pressure of outermost isobar: 1003 hPa
Radius of outermost closed isobar: 150 nm [280 km]
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+06: 19/1800: 12.3S 135.2E: 025 [050]: 100 [185]: 945
+12: 20/0000: 12.7S 134.9E: 040 [070]: 075 [135]: 965
+18: 20/0600: 13.2S 134.7E: 050 [095]: 045 [085]: 988
+24: 20/1200: 13.8S 134.4E: 065 [120]: 035 [070]: 995
+36: 21/0000: 15.1S 133.6E: 085 [155]: 030 [055]: 999
+48: 21/1200: 16.5S 132.3E: 105 [190]: 030 [055]: 1000
+60: 22/0000: 17.7S 130.9E: 125 [230]: 030 [055]: 1000
+72: 22/1200: 18.8S 129.5E: 140 [265]: 030 [055]: 1000
+96: 23/1200: 20.3S 125.4E: 185 [345]: 030 [055]: 1000
+120: 24/1200: 22.6S 122.4E: 275 [505]: 025 [045]: 1002
REMARKS:
Severe tropical cyclone Lam has recently intensified to a category 4 system with
a cloud filled eye and an extensive banding feature evident on recent infrared
satellite imagery. Dvorak analysis was based on an eye pattern with a white
surround and a subraction for a black eye and a cold medium grey surround,
giving a CF of 5.5. An added 0.5 for a BF gave a DT of 6.0. MET and PAT are...
FT was based on a 3-hour averaged DT as it appears clear.
The position of the system is rated as good based on radar imagery from across
the Top End of the Northern Territory. Observations from Ngayawili indicated
storm force winds with wind gusts up to 81 knots in the southern eye wall before
the Automatic Weather Station failed.
There has been some trochoidal motion evident in severe tropical cyclone Lam's
progession towards the coast, but overall the system appears to be moving slowly
in a southwest direction as it begins to move over the northeast Top End coast.
Lam should continue moving in this direction overnight and should fully move
across the coast during Friday morning, where it will then continue to move
inland and begin to weaken.
Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 19/1930 UTC by Darwin TCWC. |
本帖子中包含更多資源
您需要 登錄 才可以下載或查看，沒有賬號？立即加入
x
|
