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18S.Ilsa 升格澳式C5 登陸西北澳 衝擊澳洲年度風王

簽到天數: 241 天

[LV.8]以壇為家I

krichard2011|2023-4-11 16:21 | 顯示全部樓層
BoM 稍早升格一級熱帶氣旋
強度上看四級熱帶氣旋 威脅澳洲西岸
逐漸進入低風切區域
底層型態不錯 預計強度將逐漸增強
wgmsshr.gif
20230411.053905.SH182023.amsr2.gcom-w1.color89.55kts.94p7.1p0.jpg
IDW60280.png
  1. IDW27600
  2. TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
  3. Issued by AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE
  4. at: 0720 UTC 11/04/2023
  5. Name: Tropical Cyclone Ilsa
  6. Identifier: 23U
  7. Data At: 0600 UTC
  8. Latitude: 14.5S
  9. Longitude: 121.2E
  10. Location Accuracy: within 20nm (35 km)
  11. Movement Towards: southwest (235 deg)
  12. Speed of Movement: 7 knots (13 km/h)
  13. Maximum 10-Minute Wind: 40 knots (75 km/h)
  14. Maximum 3-Second Wind Gust: 55 knots (100 km/h)
  15. Central Pressure: 994 hPa
  16. Radius of 34-knot winds NE quadrant:
  17. Radius of 34-knot winds SE quadrant: 80 nm (150 km)
  18. Radius of 34-knot winds SW quadrant: 80 nm (150 km)
  19. Radius of 34-knot winds NW quadrant: 60 nm (110 km)
  20. Radius of 48-knot winds NE quadrant:
  21. Radius of 48-knot winds SE quadrant:
  22. Radius of 48-knot winds SW quadrant:
  23. Radius of 48-knot winds NW quadrant:
  24. Radius of 64-knot winds:  nm ( km)
  25. Radius of Maximum Winds: 20 nm (35 km)
  26. Dvorak Intensity Code: T3.0/3.0/S0.0/24HRS STT:D0.5/6HRS
  27. Pressure of outermost isobar: 1004 hPa
  28. Radius of outermost closed isobar: 130 nm (240 km)
  29. FORECAST DATA
  30. Date/Time    : Location    : Loc. Accuracy: Max Wind   : Central Pressure
  31. (UTC)        : degrees     :      nm  (km): knots(km/h): hPa
  32. +06:  11/1200: 14.9S 120.9E:     040 (070):  045  (085):  990
  33. +12:  11/1800: 15.3S 120.4E:     050 (095):  055  (100):  984
  34. +18:  12/0000: 15.7S 120.0E:     060 (115):  060  (110):  980
  35. +24:  12/0600: 16.1S 119.7E:     070 (125):  070  (130):  972
  36. +36:  12/1800: 16.8S 119.2E:     085 (155):  085  (155):  959
  37. +48:  13/0600: 18.0S 119.2E:     105 (190):  095  (175):  950
  38. +60:  13/1800: 19.5S 120.4E:     120 (225):  090  (165):  953
  39. +72:  14/0600: 21.1S 123.4E:     145 (265):  040  (075):  994
  40. +96:  15/0600: 23.0S 134.0E:     200 (370):  030  (055): 1003
  41. +120: 16/0600:             :              :            :     
  42. REMARKS:
  43. Tropical Cyclone Ilsa has developed northwest of the Kimberley.

  44. Good confidence in the position of 23U with visible imagery and recent
  45. microwave passes.

  46. Intensity is 40 knots based on recent SMAP data and development of curved band,
  47. which gives greater confidence in Dvorak analysis of DT = 3.0. MET = 3.5 based
  48. on D- 24 hour trend. PAT is 3.0. FT = 3.0 based on DT. CI maintained at 3.0.
  49. Objective guidance is becoming more credible with development of curved
  50. banding. Available objective guidance with SATCON 53 knots (1-min), CIMSS ADT
  51. 57 knots (1-min), NESDIS ADT 57 knots (1-min) and OPEN-AIIR about 35 knots.  

  52. Wind shear has decreased over 23U and at 0600 UTC, CIMSS upper wind analysis
  53. has analysed approximately 15 knots of shear. The system should begin a rapid
  54. development cycle with favourable shear, high mid-level moisture and warm SSTs
  55. (30+ degrees Celsius).

  56. Upper divergence to the south increases and the system is forecast to develop
  57. into a severe tropical cyclone from Wednesday, likely reaching a category 4
  58. system during Thursday. 23U is forecast to move southwest parallel to and
  59. offshore from the Kimberley coast during Tuesday and Wednesday before turning
  60. south and then southeast during Thursday, with a coastal crossing likely later
  61. Thursday or early Friday between Port Hedland and Broome.

  62. The forecast track is based on a standard consensus of numerical weather
  63. prediction (NWP) models. This track is consistent with upper-air analyses which
  64. show a mid-upper ridge over the NT and an approaching upper trough over
  65. southern WA. There is relatively high confidence in this forecast track. In the
  66. long-term, 23U is forecast to move over central Australia and begin a
  67. transition to a deep, sub-tropical system as it interacts with the sub-tropical
  68. jet.  

  69. Intensity forecasts are based on a rapid rate of development prior to landfall,
  70. with a landfall intensity of 95 knots (Category 4). This is consistent with a
  71. consensus of NWP models. 23U is forecast to remain a strong system as it moves
  72. inland on Friday.  

  73. Copyright Commonwealth of Australia
  74. ==
  75. The next bulletin for this system will be issued by: 11/1330 UTC
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krichard2011|2023-4-9 08:42 | 顯示全部樓層
JTWC 對這個系統的前景非常看好
第一報直接上看 C5 140KT

sh1823.gif

  1. WTXS31 PGTW 082100
  2. MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
  3. SUBJ/TROPICAL CYCLONE 18S (EIGHTEEN) WARNING NR 001//
  4. REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/071952ZAPR2023//
  5. AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT./
  6. RMKS/
  7. 1. TROPICAL CYCLONE 18S (EIGHTEEN) WARNING NR 001   
  8.    01 ACTIVE TROPICAL CYCLONE IN SOUTHIO
  9.    MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
  10.    WIND RADII VALID OVER OPEN WATER ONLY
  11.     ---
  12.    WARNING POSITION:
  13.    081800Z --- NEAR 11.3S 128.2E
  14.      MOVEMENT PAST SIX HOURS - 210 DEGREES AT 09 KTS
  15.      POSITION ACCURATE TO WITHIN 030 NM
  16.      POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
  17.      SATELLITE, SYNOPTIC DATA AND EXTRAPOLATION
  18.    PRESENT WIND DISTRIBUTION:
  19.    MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
  20.    WIND RADII VALID OVER OPEN WATER ONLY
  21.    RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT
  22.                             045 NM SOUTHEAST QUADRANT
  23.                             065 NM SOUTHWEST QUADRANT
  24.                             040 NM NORTHWEST QUADRANT
  25.    REPEAT POSIT: 11.3S 128.2E
  26.     ---
  27.    FORECASTS:
  28.    12 HRS, VALID AT:
  29.    090600Z --- 12.1S 126.9E
  30.    MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
  31.    WIND RADII VALID OVER OPEN WATER ONLY
  32.    RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
  33.                             060 NM SOUTHEAST QUADRANT
  34.                             060 NM SOUTHWEST QUADRANT
  35.                             030 NM NORTHWEST QUADRANT
  36.    VECTOR TO 24 HR POSIT: 250 DEG/ 08 KTS
  37.     ---
  38.    24 HRS, VALID AT:
  39.    091800Z --- 12.7S 125.3E
  40.    MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
  41.    WIND RADII VALID OVER OPEN WATER ONLY
  42.    RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT
  43.                             060 NM SOUTHEAST QUADRANT
  44.                             050 NM SOUTHWEST QUADRANT
  45.                             020 NM NORTHWEST QUADRANT
  46.    VECTOR TO 36 HR POSIT: 245 DEG/ 08 KTS
  47.     ---
  48.    36 HRS, VALID AT:
  49.    100600Z --- 13.4S 123.8E
  50.    MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
  51.    WIND RADII VALID OVER OPEN WATER ONLY
  52.    RADIUS OF 050 KT WINDS - 010 NM NORTHEAST QUADRANT
  53.                             010 NM SOUTHEAST QUADRANT
  54.                             010 NM SOUTHWEST QUADRANT
  55.                             000 NM NORTHWEST QUADRANT
  56.    RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT
  57.                             070 NM SOUTHEAST QUADRANT
  58.                             060 NM SOUTHWEST QUADRANT
  59.                             040 NM NORTHWEST QUADRANT
  60.    VECTOR TO 48 HR POSIT: 235 DEG/ 08 KTS
  61.     ---
  62.    EXTENDED OUTLOOK:
  63.    48 HRS, VALID AT:
  64.    101800Z --- 14.4S 122.4E
  65.    MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
  66.    WIND RADII VALID OVER OPEN WATER ONLY
  67.    RADIUS OF 064 KT WINDS - 000 NM NORTHEAST QUADRANT
  68.                             010 NM SOUTHEAST QUADRANT
  69.                             000 NM SOUTHWEST QUADRANT
  70.                             000 NM NORTHWEST QUADRANT
  71.    RADIUS OF 050 KT WINDS - 010 NM NORTHEAST QUADRANT
  72.                             020 NM SOUTHEAST QUADRANT
  73.                             020 NM SOUTHWEST QUADRANT
  74.                             010 NM NORTHWEST QUADRANT
  75.    RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
  76.                             090 NM SOUTHEAST QUADRANT
  77.                             080 NM SOUTHWEST QUADRANT
  78.                             050 NM NORTHWEST QUADRANT
  79.    VECTOR TO 72 HR POSIT: 235 DEG/ 07 KTS
  80.     ---
  81.    72 HRS, VALID AT:
  82.    111800Z --- 16.1S 119.9E
  83.    MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT
  84.    WIND RADII VALID OVER OPEN WATER ONLY
  85.    RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT
  86.                             030 NM SOUTHEAST QUADRANT
  87.                             030 NM SOUTHWEST QUADRANT
  88.                             020 NM NORTHWEST QUADRANT
  89.    RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
  90.                             050 NM SOUTHEAST QUADRANT
  91.                             040 NM SOUTHWEST QUADRANT
  92.                             040 NM NORTHWEST QUADRANT
  93.    RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT
  94.                             120 NM SOUTHEAST QUADRANT
  95.                             090 NM SOUTHWEST QUADRANT
  96.                             080 NM NORTHWEST QUADRANT
  97.    VECTOR TO 96 HR POSIT: 205 DEG/ 06 KTS
  98.     ---
  99.    LONG RANGE OUTLOOK:
  100.     ---
  101.    96 HRS, VALID AT:
  102.    121800Z --- 18.3S 118.9E
  103.    MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
  104.    WIND RADII VALID OVER OPEN WATER ONLY
  105.    RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
  106.                             030 NM SOUTHEAST QUADRANT
  107.                             030 NM SOUTHWEST QUADRANT
  108.                             030 NM NORTHWEST QUADRANT
  109.    RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
  110.                             060 NM SOUTHEAST QUADRANT
  111.                             050 NM SOUTHWEST QUADRANT
  112.                             050 NM NORTHWEST QUADRANT
  113.    RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
  114.                             120 NM SOUTHEAST QUADRANT
  115.                             100 NM SOUTHWEST QUADRANT
  116.                             090 NM NORTHWEST QUADRANT
  117.    VECTOR TO 120 HR POSIT: 150 DEG/ 10 KTS
  118.     ---
  119.    120 HRS, VALID AT:
  120.    131800Z --- 21.8S 121.3E
  121.    MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
  122.     ---
  123. REMARKS:
  124. 082100Z POSITION NEAR 11.5S 127.9E.
  125. 08APR23. TROPICAL CYCLONE 18S (EIGHTEEN), LOCATED APPROXIMATELY
  126. 174 NM WEST-NORTHWEST OF DARWIN, AUSTRALIA, HAS TRACKED SOUTH-
  127. SOUTHWESTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. MAXIMUM
  128. SIGNIFICANT WAVE HEIGHT AT 081800Z IS 12 FEET. NEXT WARNINGS AT
  129. 090300Z, 090900Z, 091500Z AND 092100Z.
  130. 2. THIS CANCELS AND SUPERSEDES REF A (WTXS21 PGTW 072000).//
  131. NNNN
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[LV.8]以壇為家I

krichard2011|2023-4-8 22:39 | 顯示全部樓層
JTWC 發布TCFA

數值模式看好發展~
sh9823.gif
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