KUJIRA is now situated northwest of a subtropical ridge. It is forecast that the associated steering flow will direct KUJIRA to the northeast in the rest of the forecast period.
鯨魚將沿副熱帶高壓脊的的西北部向東北移動。
Intensity Analysis 強度分析
Current T-number: N/A
KUJIRA has begun extratropical transition. It will be transformed into an extratropical cyclone within the next 12 hours.
現時的 T 號碼: 不適用
鯨魚已開始轉化為溫帶氣旋，並預料於 12 小時內完成轉化。
Effects on Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
鯨魚於未來的 72 小時將不會對香港構成任何影響。
Next Update 下次更新
This is the final bulletin on KUJIRA.
這是本站對鯨魚的最後一次發佈。
Probabilities of TC Signals from HKO 香港天文台(已)發出熱帶氣旋警告信號的機率
Not Applicable 不適用
Past Bulletins (click on the bulletin no. for the contents) 過往報告 (請按發佈編號顯示內容)
KUJIRA is now situated northwest of a subtropical ridge. It is forecast that the associated steering flow will direct KUJIRA to the northeast in the rest of the forecast period. KUJIRA will accelerate as it travels within the westerlies.
鯨魚將沿副熱帶高壓脊的的西北部向東北移動。隨著鯨魚於稍後進入西風帶，其移動速度將會加快。
Intensity Analysis 強度分析
Current T-number: T4.5/5.0/W0.5/24 HRS
Lower ocean heat content and progressively higher vertical wind shear will continue to weaken the system. Extratropical transition is expected to begin between t+12 and t+24.
現時的 T 號碼: T4.5/5.0/W0.5/24 HRS
強勁垂直風切變和較冷的海水會繼續令鯨魚減弱。鯨魚將於 12 至 24 小時後開始轉化為溫帶氣旋。
Effects on Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
鯨魚於未來的 72 小時將不會對香港構成任何影響。
Next Update 下次更新
19 HKT, 2009/05/07 (or earlier 或更早)
Probabilities of TC Signals from HKO 香港天文台(已)發出熱帶氣旋警告信號的機率
KUJIRA intensified rapidly last night, reaching the upper bound of category 3 strength briefly before its eye became cloud-filled again. At 14 HKT, KUJIRA was centred about 1010 km (550 NM) SW of Iwo Jima.
KUJIRA is now situated northwest of a subtropical ridge. It is forecast that the associated steering flow will direct KUJIRA to the northeast in the rest of the forecast period. KUJIRA will accelerate later on as it travels within the westerlies.
鯨魚將沿副熱帶高壓脊的的西北部向東北移動。隨著鯨魚於稍後進入西風帶，其移動速度將會加快。
Intensity Analysis 強度分析
Current T-number: T5.0/6.0/D1.0/24 HRS (W1.0/12 HRS)
The improved divergence enabled KUJIRA to intensify to about 110 knots early today. However lower ocean heat content and higher vertical wind shear is about to set in and weaken the system. Extratropical transition is expected to begin between t+24 and t+36.
A trough is traversing to the north of KUJIRA and it is expected that KUJIRA will be steered northeastward in the northwestern periphery of the subtropical ridge. KUJIRA is expected to accelerate as it travels into the westerlies later in the forecast period.
Current T-number: T4.0/4.0/D1.0/24 HRS
KUJIRA is currently in a warm environment with light shear. Moreover, the enhanced outflow brought by the traversing trough will enable KUJIRA to intensify in the next 36 hours. High vertical wind shear at latitudes above 20N and cooler waters will weaken the system after t+48. Extratropical transition is expected beyond t+72 to t+96.
KUJIRA has started moving slowly to the east. It is expected that the arrival of a mid-latitude trough will weaken the steering force to the north of the system; it will then be exposed to the force driven by the northwestern quadrant of the subtropical ridge southeast of it and will track NE to ENE.
Current T-number: T3.0/3.0/D0.5/18 HRS
KUJIRA is currently in a warm environment with light shear. As KUJIRA tracks away from land it should intensify in the next two days, possibly reaching typhoon strength. However it will be exposed to increasingly hostile environment in terms of vertical wind shear and sea surface temperatures and this will serve to weaken the system after that time.
現時的 T 號碼: T3.0/3.0/D0.5/18 HRS 鯨魚現處於一溫暖和微弱垂直風切變的環境。隨著鯨魚逐漸離開陸地，它將有望於未來 48 小時增強至颱風程度；但同時它將逐漸受較強的垂直風切變和較冷的海水影響，預料這將會令鯨魚於預測後期逐步減弱。
Effects on Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
鯨魚於未來的 72 小時將不會對香港構成任何影響。
Next Update 下次更新
23 HKT, 2009/05/04 (or earlier 或更早)
Probabilities of TC Signals from HKO 香港天文台(已)發出熱帶氣旋警告信號的機率
The tropical depression lingering near central Philippines intensified successively into a tropical storm today (01W). At 20 HKT, 01W was centred about 380 km (210 NM) ESE of Manila.
The lack of net steering force rendered 01W motionless for the past few days. It is expected that the arrival of a mid-latitude trough will weaken the steering force to the north of the system; it will then be exposed to the force driven by the northwestern quadrant of the subtropical ridge southeast of it and will track ENE.
Current T-number: T2.5/2.5/INT OBS
As 01W tracks away from land it should intensify in the next two days. However it will be exposed to increasingly hostile environment in terms of vertical wind shear and this will serve to weaken the system after that time.
Active Tropical Cyclone(s) 正活躍之熱帶氣旋
