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Typhoon Yutu - predicted to pass close to Hong Kong around 07:00 on
25th July 2001.
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No tropical cyclone details will be listed here until further notice.
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[Typhoon Hagupit 2008 Page]
For storms that may not be covered on here, the links on Carl's World Wide TC Links Page
will be useful whenever a storm is in the appropriate area.
Links content is updated frequently. Page content updated 2008-10-09 at
22:10 QLD Time [UTC+10].
In title lines of NWP systems, [NAME] means PAGASA name, (nnW) indicates JTWC No, and
{nnnn} indicates JMA No.
In title lines of SH systems, (nnS) or (nnP) indicates JTWC No, {nnF} indicates FMS
No, and {nnR} indicates Reunion No.
2002-10-03 
Weather Graphs for Sha
Tin (note: I have just discovered that several of these graphs have been
overwritten by later ones. I shall endeavour to find copies of the earlier graphs
from backups and fix this as soon as possible)

Pressure has been falling as Yutu approaches. The AWS failed shortly after this, so later
pressure graphs were impossible to obtain.

Notice the sudden falls of temperature at 13:20 and 17:15 when the rainbands crossed us.

You can see the sudden fall when the rainband hit at 09:00 on 26th very clearly.

The overall 10-minute average wind speed has been rising.

At the AWS, the 10-minute average wind speed never again reached the levels it did during
my 09:00 walk by the river.
Signal History:
Typhoon Signal No 1 (Stand By) was hoisted at 21:50 on 23rd July 2001.
Typhoon Signal No 3 (Strong Winds) was hoisted at 15:50 on 24th July 2001.
Typhoon Signal No 8 (North East Gales) was hoisted at 00:30 on 25th July 2001.
Typhoon Signal No 8 (South East Gales) was hoisted at 10:40 on 25th July 2001.
Typhoon Signal No 3 (Strong Winds) was hoisted at 19:40 on 25th July 2001.
All Typhoon Signals were lowered at 06:15 on 26th July 2001.
Email History:
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/24/01 13:00:37 |
| Subject: current.htm updated - JTWC details and 10W position |
As Yutu approaches:
I have just come in from being out and about and we have that oppressive
humidity and heat which usually precedes approaching typhoons. The buses
are air-conned, but the walk from the bus-stop to home has you wringing
wet! It is also hazy and still - two other signs of approaching typhoons.
HKO is predicting rapid deterioration of the weather later today with the
hoisting of higher signals likely.
Today HKO has issued the Very Hot Weather Warning as well as hoisting
Typhoon Signal 1.
Meanwhile it is very frustrating not to be able to bring up the JTWC map
for Yutu. You don't realise how often you use some Internet pages until
they are denied you.
Will keep you updated as it begins to arrive.
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/24/01 13:41:15 |
| Subject: Here she comes! |
About 13:15 the sun went behind the rapidly approaching clouds.
By 13:30 it was so dark the street lights came on!
The HKO has withdrawn the Very Hot Weather Warning and issued the
Thunderstorm Warning instead.
As I type there have been several Flangs and the thunder is roaring
almost incessantly. Visibility has dropped to less than 1000 metres but
I don't know yet whether this is due to intensification of the haze or
the arrival of rain - it isn't raining here - at any rate, I can't see
the Baptist University buildings on the other side of the river.
Here's the rain as I keep typing. It's now 13:36 and at 13:00 the sky
was clear and blue and hazy with the relentless sun cooking everybody.
This rain band has arrived as suddenly as any I can remember. The palm
trees outside are nodding their heads so the wind is beginning to pick up
also.
At 13:39 visibility is now less than 500 metres - raining steadily.
More flangs - I had better go off line.
More later.
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/24/01 16:35:01 |
| Subject: current.htm updated - Signal 3 hoisted |
YUTU is upgraded to a typhoon and signal 3 has replaced signal 1.
Typhoon signal number three was hoisted at 15:50 this afternoon.
Typhoon YUTU is currently 335 Km South East of here.
We had a very dark and gloomy cloud-band pass over here at about 13:30.
Now the thunder has all gone and the wind has died down and everything is
still and hazy again.
I have to go to Hong Kong Island by bus for a few hours shortly, so I
shall be out there in the thick of it as the storm hits. I am expecting
to get online again about 23:00 HKT.
It is a nuisance having JTWC down but figuring it out the best I can from
e-mails, it seems the storm will be very close to here at about 07:00 to
08:00 tomorrow morning.
Actually it seems to be staying well South of the track that all agencies
are predicting so it may miss us by miles. On the other hand it is
exactly SE of here and everyone is predicting NW movement so we might be
in for a good blow.
At the moment it is just "wait and see".
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/24/01 23:48:04 |
| Subject: Update on Typhoon Yutu |
Carl,
I have commenced a page at http://www.drdisk.com.hk/yutu.htm
to possibly
keep up with the storm.
HKO says Signal Eight will probably be hoisted around 1 am.
At 17:00 this afternoon we were hit again by an instantly-appearing rain-
band which again made it so dark the street lights all came on. This
rainband, like the previous one, had very powerful and intensive display
of incessant lightning with continuous rolling thunder. No flangs this
time though. At that time I was walking to the bus depot to catch a bus
to Hong Kong Island. There was not much wind but the rain came down
incredibly heavily - there was inches of water lying on the roads making
driving hazardous. The bus left the depot at 17:30 with visibility
almost nil, but in 500 metres we were out of it and there wasn't a drop
falling.
We were then underground for 4 Km and when we emerged on the other side
of the mountains, although the road surface was still awash, the sky was
clearing rapidly and half the sky was already blue.
At 18:00 we alighted from the bus observing that all the storm shutters
were being battened down and boarded a tram. The tram tracks were still
under water most of the way (they tend to be lower than the road surface)
but the sky was now blue and clear.
From 18:45 until 20:15 I was indoors with no windows. When I emerged and
was out and about the wind was calm and the sky was mostly clear. The
roads and tram tracks were dry. I was indoors elsewhere from 20:40 until
22:00. By this time the sky was fully clouded over again but it was
still dry and warm and dead calm.
From 23:00 to 23:20 we walked from the bus depot to home and it was still
calm with the sky fully overcast. No sign of lightning or rain.
The HKO Isohyet charts show no rain within the last hour or so anywhere
in HK territory.
So the typhoon is keeping its distance for the moment.
HKO is expecting it to pass about 110 Km South of here at about 08:00
tomorrow.
Will keep you posted.
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/25/01 06:28:06 |
| Subject: Yutu passes by |
At 00:30 this morning I heard the patter of steady rain but no wind.
HKO
hoisted Typhoon Signal 8 at 00:30.
Now at 06:25 it is raining steadily but not heavily although there have
been breaks in the rain.
Winds are still pretty light here, but remember that our valley is very
sheltered.
Typhoon Yutu is currently centred 190 Km South of us with 150 km/h winds
near its centre. It will be at its closest approach to Hong Kong within
the next half hour or so.
Typically, the strongest winds will arrive after it has passed us and is
moving away.
At this present moment though, the passage of Yutu is almost a non-event.
Even the sea level appears to be not any measurable amount above normal,
so I don't think there is much risk of flooding.
More later.
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/25/01 10:17:18 |
| Subject: Walking out in Typhoon Yutu |
Although Typhoon Signal No 8 was still hoisted, the wind seemed
slight
and the rain stopped about 08:30 so away I went down to the river bank.
I noticed that the sea level was about 40 cm above normal high tide (and
it was theoretically still low tide! Waves of about 20 cm in height were
coming from the North East.
I walked a couple of kilometres South West along the river and heard
before I felt a noise approaching from behind. I turned around and saw
much taller waves with white crests and by 08:55 the wind was approaching
gale force. A large tree fell near Tsang Daaih Uk and I noticed one boat
sunk in the river. However it looked as though the sinking was probably
not typhoon-related.
Several larger boats were using the river as a typhoon shelter.
I observed that the steel box framed sign at the Ecclesia Bible College
had blown over to a weird angle but not completely down.
At 09:00 the rain came and a brolly was needed.
Walking back to the North East I had the wind (and rain) in my face. I
took shelter five or six times under bridges and shelter sheds when the
rain got really bad.
While sheltering I observed that while the wind was generally from the
North East there were also several significant gusts from the South
East. I wondered whether this indicates it is nearly time for HKO to
hoist the South East Gales signal, but the wind then became a steady NE-
er again.
By the time I had got nearly home the waves on the river were about 45 cm
and were breaking over the footpath. The river height was now about 75
cm above normal high tide. I decided on safety and travelled home via
the covered overbridge and through the underground car-parks, as the wind
and rain had become pretty savage. I entered home around 09:45.
Now as I type conditions are far more typical of a number eight signal.
The wind is gusting and howling around the building and the rain is
pelting against the windows. I'm glad to be inside and glad we live in
such a sheltered valley.
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/25/01 17:16:37 |
| Subject: Yutu hangs around |
There is little new to report on Yutu at this stage. It is
just a
dreary, drizzly, wet day here.
A few times we have heard the wind start to howl and looked out to see
the trees thrashing about, but we still haven't had any *REAL* wind from
this one. Some areas of HK obviously had a little more: a quote from the
HKO:
DURING THE PAST HOUR, MEAN WIND SPEED WAS 67 KILOMETRES PER HOUR
AT CHEUNG CHAU WITH GUST REACHING 87 KILOMETRES PER HOUR. AT SHEK
KWU CHAU, MEAN WIND OF 72 KILOMETRES PER HOUR AND GUST OF 93
KILOMETRES PER HOUR WERE RECORDED.
There have been no injuries or damage reported so far in HK. All the TV
news can find for their Typhoon Special reports is a few overturned
rubbish bins!
More later if we get any real news.
Signal Eight is still hoisted and likely to remain so for a few hours yet.
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/26/01 05:58:31 |
| Subject: Yutu fizzles out |
I haven't sent an update on Yutu for many hours as there has been
nothing
to write.
The TV news has only managed a few shots of upturned rubbish bins and
umbrellas blowing inside-out. Macau copped it a lot worse than we did as
the TV news showed footage of major flooding.
But for Hong Kong one could say that everybody had a holiday off work for
what was essentially a non-event.
At this moment as I type, Typhoon Signal Three is still hoisted, HKO
having replaced Signal Eight with it at 19:40 last night. But as signal
3 means all schools are closed, I should imagine it will be lowered
within the hour as there is really no need for it any more.
During the evening and night we heard no more howling winds and even the
rain has been frequent but quiet - not pelting down like it did yesterday
morning. The sea level looks to be about normal.
The 10-minute average wind speed recorded at Sha Tin AWS reached 20 km/h
at about 02:30 this morning, but if it made any noise then, I slept
through it!
The typhoon is already overland and more than 340 Km away from here and
travelling directly away from us, so I will be surprised if we get any
more real winds from it. It will probably just rain for the next two
days.
Unless something happens during my walk shortly, this will probably be my
last report.
| From: "Phil Smith" |
| To: "Carl Smith" |
| Date: 07/26/01 09:08:34 |
| Subject: Last report on Yutu |
I went out for a walk this morning, leaving the flat at 06:20.
I had
made one last check on the Internet and seen that Typhoon Signal Three
was still hoisted at 06:14.
The first thing I noticed at 06:20 was that I looked at the Typhoon
Signal and observed that it had been lowered.
Arriving at the river bank, I found the sea level to be fully two metres
below where it had been at yesterday's walk.
While the surface of the river was not quite like a mirror, the splashes
of jumping fish suggested a reason for the small ripples that were
evident.
The wind was no more than a light breeze, barely able to stir a leaf.
The ground was covered with the usual post-typhoon debris: millions of
leaves and a few small twigs.
The boats were still using the river as a typhoon shelter, although they
each appeared in the words of the poet as "like a painted ship upon a
painted ocean" each atop its own inverted reflection.
I observed a medium sized tree in the middle of the river near Sand
Martin Bridge and observed that one more medium-sized tree had been blown
down at the top of the levee bank near Lion Rock Tunnel Road.
Apart from these there was no evidence that there had been a typhoon.
This will be the last report unless we receive damage reports from where
it went ashore in Southern China this morning.
Final form of current.htm reference for Yutu during it's passage:
CURRENT HONG KONG TYPHOON SIGNAL
IS: HKO , TCC , WXHK
All Typhoon Signals were lowered at 06:15 on 26th July 2001.
TYPHOON YUTU (10W) : South China Sea: Approaching
South China coast:
[JTWC] : Satellite,
Warning, Map, Prognostic
Reasoning.
[WXHK]: Forum , Animation , Lightning, TC Page, Forecast.
[HKO]: Signal, Shipping, Track, Rainfall, Text, Warnings.
[Carl]: Colour Enhanced Satellite
Images.
[Hawaii]: Positions, Map, NWP Map.
[CIMSS]: Satellite IR,
Satellite
WV.
[Typhoon2000]: Details.
[PAGASA]: TC Update.
[TCC]: Positions, Map.
[Kochi-U]: Satellite.
This page was last modified on 07-Feb-08 at 11:32:27 HKT.
24/7/2001 
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