JEBI crossed the Gulf of Tonkin last night and made landfall in northern Vietnam near noon today. At 2 pm, JEBI was centred about 95 km (50 NM) NE of Hanoi. The #3 Strong Wind Signal was cancelled at 10:15 pm last night.
JEBI is the 25th name in the tropical cyclone name list. It was contributed by South Korea, meaning swallow. This name, spelt as CHEBI, was used in 2001 and 2006, with the former occurrence necessitating a #1 Standby Signal.
JEBI has accelerated and intensified into a severe tropical storm. At 2 pm, JEBI was centred about 460 km (250 NM) SSW of Hong Kong. The #3 Strong Wind Signal remains in force.
JEBI is the 25th name in the tropical cyclone name list. It was contributed by South Korea, meaning swallow. This name, spelt as CHEBI, was used in 2001 and 2006, with the former occurrence necessitating a #1 Standby Signal.
The subtropical ridge is expected to extend westwards north of JEBI's current latitude. This will cause JEBI to move increasingly westwards towards northern Hainan. It is expected to move WNW later towards northern Vietnam.
Current T-number: T3.5/3.5/D0.5/24 HRS
JEBI's structure has improved substantially and is developing a banding eye. Its proximity to land implies that intensification will soon cease. The storm should be able to maintain intensity in the Gulf of Tonkin, and will weaken rapidly upon landfall at Vietnam.
現時的 T 號碼: T3.5/3.5/D0.5/24 HRS
飛燕的結構明顯轉好,並正發展雲捲風眼。由於飛燕已接近陸地,它將於短期內停止增強。預料飛燕能於北部灣中保持一定強度,並於登陸越南後快速減弱。
Effects on
Hong Kong 對香港的影響
A disturbance that landed at Shantou this morning was somehow affecting local winds last night and this morning. As that disturbance dissipates and JEBI moves to Hong Kong's southwestern quadrant, wind direction is expected to change to southeast soon. JEBI is reaching its closest approach to the territory in the next few hours. Winds will remain strong tonight, and subside gradually tomorrow. There will also be squally showers.
JEBI turned poleward today. At 2 pm, JEBI was centred about 690 km (370 NM) S of Hong Kong. The #1 Standby Signal was issued at 9:40 am, and was upgraded into the #3 Strong Wind Signal at 4:10 pm.
JEBI is the 25th name in the tropical cyclone name list. It was contributed by South Korea, meaning swallow. This name, spelt as CHEBI, was used in 2001 and 2006, with the former occurrence necessitating a #1 Standby Signal.
The subtropical ridge has strengthened and is guiding JEBI towards the NNW. The storm is expected to turn westwards as it reaches higher latitudes, when it approaches the southern edge of the ridge.
Current T-number: T3.0/3.0/D0.5/24 HRS
JEBI is struggling to concentrate convections near its centre. However generally good environmental conditions should allow the storm to intensify into a severe tropical storm before making landfall at Hainan Island.
現時的 T 號碼: T3.0/3.0/D0.5/24 HRS
飛燕未能將對流集中於其中心,但由於其附近環境良好,預料它仍能於登陸海南島前增強為強烈熱帶風暴。
Effects on
Hong Kong 對香港的影響
Due to the combined effect of JEBI and the subtropical ridge, winds are already quite strong locally even though JEBI is still rather far away from the territory. Winds are expected to strengthen further tonight and tomorrow, with squally showers at times. Conditions will improve on Saturday as JEBI moves away.
A tropical cyclone (09W) developed in the South China Sea today and has intensified into a tropical storm, which was named JEBI. At 2 pm, JEBI was centred about 820 km (440 NM) S of Hong Kong.
JEBI is the 25th name in the tropical cyclone name list. It was contributed by South Korea, meaning swallow. This name, spelt as CHEBI, was used in 2001 and 2006, with the former occurrence necessitating a #1 Standby Signal.
JEBI is currently drifting slowly westwards due to the combined influence of the subtropical ridge to the northeast and an equatorial ridge to the southeast. The subtropical ridge is expected to strengthen later and will become the dominant steering mechanism, leading JEBI towards the NW. As JEBI reaches higher latitude and approaches the ridge's southern periphery, its motion is expected to turn westwards.
Current T-number: T2.5/2.5/INT OBS
JEBI is in an environment with very little shear and high sea temperatures (above 28 degrees), and divergence is also favourable. This has led to the rapid development of the system over the past 24 hours. The storm is expected to intensify steadily before reaching land, and weaken afterwards.
Hong Kong may experience enhanced southeasterly winds with squally showers in the next two days as JEBI moves to the southwestern quadrant of the territory.
隨著飛燕移至香港的西南象限,本港未來兩天東南風將會增強,並伴隨狂風驟雨。
Next Update
下次更新
2013/08/01 (Thu 四), afternoon 下午 (or earlier 或更早)
Other Images
其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象廳路徑圖
HKO Satellite 香港天文台衛星圖
HKO Track 香港天文台路徑圖
Probabilities
of TC Signals from HKO 香港天文台發出 / 取消熱帶氣旋警告信號的機率
Signal 信號
t+12
t+24
t+36
t+48
t+60
t+72
Standby 戒備 #1
Low 低
Medium 中等
High 高
High 高
Medium 中等
Low 低
Strong Wind 強風 #3
Low 低
Medium 中等
Low 低
Gale/Storm 烈或暴風 #8
G/S Incr. 烈或暴風增強 #9
Hurricane 颶風 #10
Notes 註:
1) For issuance, "Signal" column represents having issued that signal or above. 有關發出機率,首欄指已發出該信號或更高信號。
2) "Low" = Probability from 5 to 20 per cent; "Medium" = 20 to 50%; "High" = 50 to 80%; "V High" = 80% or above.
"低" = 5% - 20% 的機率; "中等" = 20 - 50%; "高" = 50 - 80%; "極高" = 80% 或以上。