HK Weather

Pabuk

Severe Tropical Storm Pabuk looked set to have passed Hong Kong, barely causing an impact other than a pulse of thunderstorms, some rain. Headed towards Hainan, and forecast to dwindle to nothingness. But, it stopped, strengthened again, and turned around - and headed straight for Hong Kong as a tropical storm, hitting on 10 August; seems the rather hazy centre hit Lantau, before it moved off towards west, and weakened..
Led to hoisting of Number 1 and then, a couple of hours or so later, the Number 8: latter causing massive confusion, as people scurried home from work.

Pabuk

Severe Tropical Storm Pabuk looked set to have passed Hong Kong, barely causing an impact other than a pulse of thunderstorms, some rain. Headed towards Hainan, and forecast to dwindle to nothingness. But, it stopped, strengthened again, and turned around - and headed straight for Hong Kong as a tropical storm, hitting on 10 August; seems the rather hazy centre hit Lantau, before it moved off towards west, and weakened..
Led to hoisting of Number 1 and then, a couple of hours or so later, the Number 8: latter causing massive confusion, as people scurried home from work.

Here are views from Cheung Chau, as Pabuk approached (again!), and as it came close, with intense rainband.


This windspeed chart from Cheung Chau weather station shows the wind peaked roughly as I took the above photo, at around 100km/hr (10-minute average): storm force, tho soon down to gale force.

 

I had to take a ferry. As I neared the pier, passed bicycles blown over by powerful wind, and this broken tree branch.

The ferry took 15-20 minutes just to leave the pier! - blown against it by the wind!
Even in the typhoon shelter, the gale to storm force wind was blasting small waves w white water. Here, took shot in pelting rain.
{mov}pabuk-ferryrideweb{/mov}
There were big waves - some 3-4 metres? - soon after the ferry left the typhoon shelter. The ferry took an unusual course, to avoid as much as possible the roughest seas towards Hong Kong - north past Hei Ling Chau, to pass near Peng Chau. Even so, once we were beyond the lee of Hei Ling Chau, the ferry rolled in big seas; a few times, rolled pretty far then hit by waves that sent spray to windows of middle deck (where I was).
I shot these clips, inc as arrived in Victoria Harbour.

Calmer in the harbour, tho some dark clouds moved over.

I arrived in Central to find large crowd of people, waiting to catch ferry to Cheung Chau. (and go home - not for holiday!) The Number 8 was imminent, or up already.
{mov}pabuk-ferryrush{/mov}
Took quite some time for ferries to arrive. When a small - two deck - ferry berthed, there was degree of chaos as people rushed along exit way, dashed onto ferry without paying, w much shouting. But then, gate closed behind them, and things quiet again: the ferry left, and I figured I was glad not to be on it, as surely would bounce even more than three-deckers (as I'd come in on).

There were tv news crews around, reporting on people waiting for ferries. (Maybe, too, on the storm - but in Central it was pretty quiet; hard to guess how rough the seas were towards Cheung Chau, and how strong the wind had been there.)


Later, I came back to the ferry pier - sure the Number 8 must go down soon, and wanting to take ferry home (as little to do in town after collecting my family; we'd had coffee, eaten, been to supermarket, waleked by closed shops, checked HMV, and now just waiting, waiting and waiting at the pier). Boring, tho the harbour looked attractive w reflections on water free of boats: rather frustrating to be waiting like this when the harbour was calm as a mill pond!

THe piers were near deserted; a few others waiting for ferries and - as here - still a few news crews hanging on.

At last came annuncement that Number 8 replaced by Number 3; ferries didn't start at once; Lamma ferry off before Cheung Chau one even appeared), but we could eventually head home - phew!

HK Number 8 Signal

Hong Kong's Number 8 tropical cyclone warning can be controversial; the signal means that gale force winds are expected or blowing in Victoria Harbour. Especially as this may mean hurricane force winds may soon follow - as the eye of a typhoon approaches - this signal can prompt a virtual shutdown of Hong Kong.

But, hurricane force winds rarely follow; and there have been occasions when the Number 8 has been issued, then little happened bar strong winds and rain - and business folk have complained about the city shutdown causing economic losses they believe are unnecessary.

Hearing a discussion about Hong Kong's tropical cyclone warning signals on RTHK Radio 3 recently, I emailed to suggest that there might be two signals when gales are due: a Number 8 if stronger winds don't seem imminent, and another signal if there appears to be a chance that the winds will reach and then surpass gale force. Dr Wong of the Hong Kong Observatory, who was on air at the time, thanked me for my suggestion but said we already have the second signal - the Number 9. But, the Number 9 is issued only when gales are blowing and increasing, not before gales have started; I emailed the Observatory to say so, and this led to the following correspondence.

Hong Kong Typhoons

Typhoons have long impacted Hong Kong - even the word "typhoon" is said to be derived from the Cantonese "tai fung" - big (or great) wind. Just months after British sovereignty over Hong Kong Island was first declared in 1841, "a violent typhoon flattened all the insubstantial housing and damaged shipping." (Endacott, A History of Hong Kong.) (For a little info on how typhoons form, and Hong Kong's typhoon signals, see my article Hong Kong tropical cyclones.)

Hong Kong tropical cyclones

Hong Kong lies in the tropical belt that's impacted by low pressure systems that can intensify into the world's most powerful storms: known as hurricanes in North America, cyclones in Australia and the Indian Ocean, and typhoons in the western Pacific. Happily, typhoons are scarce near Hong Kong, and rarely score direct hits (13 from 1946 to now) - but can be spectacular and deadly when they do impact the territory.

As they need warm sea water to spawn and grow, tropical storms are rare in winter, mainly occurring from around May to October - with Hong Kong mostly affected from mid-August to early October.

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