Tropical storm tracks.

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Weatherlawyer

Posted: Wed Jan 16, 2008 2:40 am

Guest

I seem to remember someone asking for a site that shows the tracks of
tropical or sub-tropical storms.

Not sure which group so here goes with even more cross posting than my
usual:

http://weather.unisys.com/hurricane/index.html

Russell

Posted: Wed Jan 16, 2008 5:51 am

Guest

On Jan 16, 7:40 am, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:

Quote:

They are also available for the Atlantic and eastern Pacific at
http://www.nhc.noaa.gov/pastall.shtml
although the maps for the 2007 season have not been posted
yet. I personally prefer the graphics from nhc, but it is a
largely a matter of taste.

Cheers,
Russell

Weatherlawyer

Posted: Wed Jan 16, 2008 3:55 pm

Guest

On Jan 16, 3:51 pm, Russell <Russell.Mar...@wdn.com> wrote:

Quote:

On Jan 16, 7:40 am, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:

I seem to remember someone asking for a site that shows the tracks of
tropical or sub-tropical storms.

Not sure which group so here goes with even more cross posting than my
usual:

http://weather.unisys.com/hurricane/index.html

They are also available for the Atlantic and eastern Pacific at
http://www.nhc.noaa.gov/pastall.shtml
although the maps for the 2007 season have not been posted
yet. I personally prefer the graphics from nhc, but it is a
largely a matter of taste.

The MetO keep all of them too but both have errors in their archived
list of storm dates, so beware. Obviously I can't tell with Unisys.
They must be getting the same data.

Does anyone archive temperate waters cyclones? I know they are ten a
penny but they are just as effective as the tropical ones.

Russell

Posted: Wed Jan 16, 2008 5:07 pm

Guest

On Jan 16, 8:55 pm, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:

Quote:

On Jan 16, 3:51 pm, Russell <Russell.Mar...@wdn.com> wrote:> On Jan 16, 7:40 am, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:

I seem to remember someone asking for a site that shows the tracks of
tropical or sub-tropical storms.

Not sure which group so here goes with even more cross posting than my
usual:

http://weather.unisys.com/hurricane/index.html

They are also available for the Atlantic and eastern Pacific at

http://www.nhc.noaa.gov/pastall.shtml

although the maps for the 2007 season have not been posted
yet. I personally prefer the graphics from nhc, but it is a
largely a matter of taste.

The MetO keep all of them too but both have errors in their archived
list of storm dates, so beware. Obviously I can't tell with Unisys.
They must be getting the same data.

Does anyone archive temperate waters cyclones? I know they are ten a
penny but they are just as effective as the tropical ones.

You're probably familiar with the Daily Weather Maps at
http://www.hpc.ncep.noaa.gov/dwm/dwm.shtml , but those
cover just the continental US and some adjacent ocean.
Other than that I don't know of any. And unless you know
the dates of a particular storm you're interested in, AFAIK
you'd have to just page through to find cases. IIRC Mariners
Weather Log magazine has articles about some specific storms
with maps, but you're limited to whatever storms authors have
decided to write about. The surface fields are archived, so
one could produce maps with a computer and the right software,
but at the moment I don't have links to either.

Cheers,
Russell

Weatherlawyer

Posted: Fri Jan 18, 2008 1:56 am

Guest

On Jan 17, 3:07 am, Russell <Russell.Mar...@wdn.com> wrote:

Quote:

On Jan 16, 8:55 pm, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:

On Jan 16, 3:51 pm, Russell <Russell.Mar...@wdn.com> wrote:> On Jan 16, 7:40 am, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:

I seem to remember someone asking for a site that shows the tracks of
tropical or sub-tropical storms.

Not sure which group so here goes with even more cross posting than my
usual:

http://weather.unisys.com/hurricane/index.html

They are also available for the Atlantic and eastern Pacific at

http://www.nhc.noaa.gov/pastall.shtml

although the maps for the 2007 season have not been posted
yet. I personally prefer the graphics from nhc, but it is a
largely a matter of taste.

The MetO keep all of them too but both have errors in their archived
list of storm dates, so beware. Obviously I can't tell with Unisys.
They must be getting the same data.

Does anyone archive temperate waters cyclones? I know they are ten a
penny but they are just as effective as the tropical ones.

You're probably familiar with the Daily Weather Maps at
http://www.hpc.ncep.noaa.gov/dwm/dwm.shtml but those
cover just the continental US and some adjacent ocean.

Other than that I don't know of any.

And unless you know the dates of a particular storm you're interested
in, AFAIK you'd have to just page through to find cases.

IIRC Mariners Weather Log magazine has articles about some specific
storms with maps, but you're limited to whatever storms authors have
decided to write about.

The surface fields are archived, so one could produce maps with
the right software, but at the moment I don't have links to either.

Know anything about the structure of spirals?

They are apparently classified by the distances apart that each
successive coil evolves. The ratio is something to do with the angle
of incidence that a tangent makes.

(With an angle of 90 degrees for example you would end up with a
circle.)

A pin-wheel that an hurricane makes is similar in some instances to
the arms of a galaxy. As the curve moves out from the centre, the
distances from each successive twist is a function of the distance
multiplied by itself.

I can't remember how though.

Maybe there is a relationship with the tracks cyclones take. On a
larger scale there is a spiral involved in the way that Low pressure
areas are laid out over the surface of the northern hemisphere.

Starting at the Pacific coast of North America for example the next
low is obviously going to be on the same track that the cloud patterns
make on images such as this one:
http://www.ssec.wisc.edu/data/comp/cmoll/cmoll.html

Or this:
http://satellite.ehabich.info/ea.htm

Not too obvious heh? Here is one for Australia:
http://satellite.ehabich.info/au.htm

Maybe a better way to grasp what I am trying to say is to get hold of
Opera and open this image in it:
http://www.weatheroffice.gc.ca/data/analysis/947_50.gif

And using the goggles icon to the right of the search bar, reduce it
to fit in the screen of your monitor.

With a felt pen mark out the positions of the Lows. Just put a dot
over each "L". (It will rub off afterwards.)

Place a sheet of paper over the screen and mark out again where the
dots show through.

To within the limitations of overlaying the whole mess on a flat
screen whilst it is supposed to represent the image of a globe, you
will see that the Lows all interconnect with a giant spiral.

And that is why Lows go to Lows rather than the more obvious direction
one would imagine them taking if you were a meteorologist.

(Actually it doesn't explain why at all. For that you need to know
how. Which coincidentally and by no means unfortunately, I do.)

Weatherlawyer

Posted: Fri Jan 18, 2008 2:32 pm

Guest

On Jan 18, 6:40 pm, Rodney Blackall <rblack...@rodsrisc.demon.co.uk>
wrote:

Quote:

In article
0e52cf0f-2787-4476-a0a0-7883b0f84...@q39g2000hsf.googlegroups.com>,
Russell <Russell.Mar...@wdn.com> wrote:

although the maps for the 2007 season have not been posted
yet. I personally prefer the graphics from nhc, but it is a
largely a matter of taste.

I post the UK Met Office monthly summary page reference every month as soon
as I am notified it is ready. Look back a couple of months at my postings to
usw and sgm.

And yet you seem unaware that the archives are what's the more
accurate adverb...

Ferqued.

Got it: Mangled.

No offence Rodders old chap but WTF is the use of an archive if you
can't rely on the dates in it?

If they do get restructured at some point, what would be good is a
modifier in them telling the browser when they reached whatever wind
strengths they reached.

(FTA Russel I can then use them to modify the results that one would
expect from the appropriate lunar phase.

Also note that the MetO uses all the common three letter endings in
its urls: .com, .net, .org etc. Maybe I went to a phishing site?)

Rodney Blackall

Posted: Fri Jan 18, 2008 2:40 pm

Guest

In article
<0e52cf0f-2787-4476-a0a0-7883b0f846bf@q39g2000hsf.googlegroups.com>,
Russell <Russell.Martin@wdn.com> wrote:

Quote:

although the maps for the 2007 season have not been posted
yet. I personally prefer the graphics from nhc, but it is a
largely a matter of taste.

I post the UK Met Office monthly summary page reference every month as soon
as I am notified it is ready. Look back a couple of months at my postings to
usw and sgm.

--
Rodney Blackall (retired meteorologist)(BSc, FRMetS, MRI)
Buckingham, ENGLAND
Using Acorn SA-RPC, OS 4.02 with ANT INS and Pluto 3.03j

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