BBC: "China braces itself for the worst..."
http://www.bbc.co.uk/weather/world/n...shtml?newX=200

Taiwan faced a second day battling with the effects of Typhoon 'Aere' The
storm began lashing the island with torrential rain and strong winds on
Tuesday, and due to the slow forward movement of the system, it has not yet
cleared through. The centre of the storm was, at the time of writing,
situated just offshore from the northern tip of Taiwan, but it is a large
system and the wind and rain extend a fair distance away from its centre.

During Tuesday night, 'Aere' continued to cause widespread damage. Power
lines have been torn away, leaving many thousands of homes without power.
Trees have been uprooted and aircraft grounded. There are reports that parts
of Taiwan have received nearly 1.5 metres, almost five feet of rain in the
past two days.

The typhoon looks set to continue on its westerly course which will bring it
into contact with eastern China before too long. With this in mind, the
Chinese government have begun evacuating people from areas likely to be
affected. They are clearly not taking any chances after typhoon 'Rananim'
wrought havoc in Zhejiang province earlier this month. 'Rananim' was one of
the most powerful and destructive typhoons to hit China in recent years and
it is thought that 'Aere' may be almost as bad with torrential rain,
storm-force winds, flooding and landslides expected.

So far, around half a million people have been evacuated from both Fujian
and Zhejiang, and over 40,000 fishing boats have been called to port. The
typhoon is expected to make landfall sometime this evening.

Meanwhile, super typhoon 'Chaba', situated further out at sea in the
northwest Pacific, was producing wind speeds of 210mph (330km/h) as it
headed slowly towards southern Japan. This beast of a storm will also have
to be closely monitored in the coming few days.
BBC

--
Viaene Björn
http://users.telenet.be/weathersite

Meanwhile, super typhoon 'Chaba', situated further out at sea in the
northwest Pacific, was producing wind speeds of 210mph (330km/h) as it
headed slowly towards southern Japan.

Those are maximum gusts. The highest steady wind was 155 kn or about
180 mph some 24 hrs ago. I wonder what the central pressure is. Below 900 mb,
I would guess.
Could someone explain how these wind speeds are measured or estimated?
Presumably some form of remote sensing, because I don't think it's a man in a
boat.

Tudor Hughes, Warlingham, Surrey.

In message , TudorHgh
writes
Meanwhile, super typhoon 'Chaba', situated further out at sea in the
northwest Pacific, was producing wind speeds of 210mph (330km/h) as it
headed slowly towards southern Japan.

Those are maximum gusts. The highest steady wind was 155 kn or about
180 mph some 24 hrs ago. I wonder what the central pressure is. Below 900 mb,
I would guess.
Could someone explain how these wind speeds are measured or estimated?
Presumably some form of remote sensing, because I don't think it's a man in a
boat.

Tudor Hughes, Warlingham, Surrey.

These days in NW Pacific tropical cyclones the winds are estimates based
on the cloud structure on satellite imagery. The US Navy used to fly
reconnaissance flights into the cyclones every 6 hours but that stopped
a while ago, probably in the late 1980's if my memory is reliable (which
it probably is not :-))

Norman
--
Norman Lynagh Weather Consultancy
18 Kings Road
Chalfont St Giles
England tel: 01494 870220

Too bad it's not coming over to your house.
"Bad Weather" wrote in message
...
Wow.....these super typhoons are just too cool! I'm revelling in the
destruction!

"Bjorn Viaene" wrote in message
...
BBC: "China braces itself for the worst..."
http://www.bbc.co.uk/weather/world/n...shtml?newX=200

Taiwan faced a second day battling with the effects of Typhoon 'Aere'
The
storm began lashing the island with torrential rain and strong winds on
Tuesday, and due to the slow forward movement of the system, it has not
yet
cleared through. The centre of the storm was, at the time of writing,
situated just offshore from the northern tip of Taiwan, but it is a
large
system and the wind and rain extend a fair distance away from its
centre.

During Tuesday night, 'Aere' continued to cause widespread damage. Power
lines have been torn away, leaving many thousands of homes without
power.
Trees have been uprooted and aircraft grounded. There are reports that
parts
of Taiwan have received nearly 1.5 metres, almost five feet of rain in
the
past two days.

The typhoon looks set to continue on its westerly course which will
bring
it
into contact with eastern China before too long. With this in mind, the
Chinese government have begun evacuating people from areas likely to be
affected. They are clearly not taking any chances after typhoon
'Rananim'
wrought havoc in Zhejiang province earlier this month. 'Rananim' was one
of
the most powerful and destructive typhoons to hit China in recent years
and
it is thought that 'Aere' may be almost as bad with torrential rain,
storm-force winds, flooding and landslides expected.

So far, around half a million people have been evacuated from both
Fujian
and Zhejiang, and over 40,000 fishing boats have been called to port.
The
typhoon is expected to make landfall sometime this evening.

Meanwhile, super typhoon 'Chaba', situated further out at sea in the
northwest Pacific, was producing wind speeds of 210mph (330km/h) as it
headed slowly towards southern Japan. This beast of a storm will also
have
to be closely monitored in the coming few days.
BBC

--
Viaene Björn
http://users.telenet.be/weathersite

Wow.....these super typhoons are just too cool! I'm revelling in the
destruction!

"Bjorn Viaene" wrote in message
...
BBC: "China braces itself for the worst..."
http://www.bbc.co.uk/weather/world/n...shtml?newX=200

Taiwan faced a second day battling with the effects of Typhoon 'Aere' The
storm began lashing the island with torrential rain and strong winds on
Tuesday, and due to the slow forward movement of the system, it has not
yet
cleared through. The centre of the storm was, at the time of writing,
situated just offshore from the northern tip of Taiwan, but it is a large
system and the wind and rain extend a fair distance away from its centre.

During Tuesday night, 'Aere' continued to cause widespread damage. Power
lines have been torn away, leaving many thousands of homes without power.
Trees have been uprooted and aircraft grounded. There are reports that
parts
of Taiwan have received nearly 1.5 metres, almost five feet of rain in the
past two days.

The typhoon looks set to continue on its westerly course which will bring
it
into contact with eastern China before too long. With this in mind, the
Chinese government have begun evacuating people from areas likely to be
affected. They are clearly not taking any chances after typhoon 'Rananim'
wrought havoc in Zhejiang province earlier this month. 'Rananim' was one
of
the most powerful and destructive typhoons to hit China in recent years
and
it is thought that 'Aere' may be almost as bad with torrential rain,
storm-force winds, flooding and landslides expected.

So far, around half a million people have been evacuated from both Fujian
and Zhejiang, and over 40,000 fishing boats have been called to port. The
typhoon is expected to make landfall sometime this evening.

Meanwhile, super typhoon 'Chaba', situated further out at sea in the
northwest Pacific, was producing wind speeds of 210mph (330km/h) as it
headed slowly towards southern Japan. This beast of a storm will also have
to be closely monitored in the coming few days.
BBC

--
Viaene Björn
http://users.telenet.be/weathersite

Norman Lynagh wrote in
:

These days in NW Pacific tropical cyclones the winds are estimates
based on the cloud structure on satellite imagery. The US Navy used to
fly reconnaissance flights into the cyclones every 6 hours but that
stopped a while ago, probably in the late 1980's if my memory is
reliable (which it probably is not :-))

And the wind estimates from the Joint Typhoon Warning Center and Japan Met
Agency always seem to quite contrasting for the same typhoon. Seems they
must be using different satellite-based techniques or maybe different
pressure-to-wind relationships for estimating the peak maximum winds?

Cheers
Richard

"Hank Sniadoch" wrote in message


Too bad it's not coming over to your house.
"Bad Weather" wrote in message
...
Wow.....these super typhoons are just too cool! I'm revelling in the
destruction!

Too true. Except for the top posting and for not clipping the quotes
that is.


--
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG