View Single Post
  #4   Report Post  
Old November 10th 08, 07:07 PM posted to uk.sci.weather
mikeyp mikeyp is offline
external usenet poster
 
First recorded activity by Weather-Banter: Nov 2008
Posts: 2
Default Met office wind speeds newbie question


"Martin Rowley" wrote in message
...
"mikeyp" wrote ...
I've been looking at the wind speeds on the Met Office site for the
London area over the next couple of days but am confused about the status
of the wind speeds shown and would really appreciate some help
understanding this.

There are often two indicators shown, the mean speed shown in a 'circle'
symbol and, sometimes, a red box directly below showing the speed of
gusts. I'm curious why there doesn't seem to be a correlation between the
mean and the gusts. For example, the sequence 09.00 -18.00 Monday shows
mean speeds of 23 mph (09.00), 35 at 12.00, 46 at 15.00 and 29 at 18.00.
However, the only gust indication shown is at 18.00 (50 mph).

snip

... does look odd: this is the 'official' key

http://www.metoffice.gov.uk/weather/uk/guide/key.html

and that doesn't help. I would guess that there is a 'cut-off' in the
algorithm used to generate the gust speed display that only allows gusts
to be shown where they are greater than "xx" mph above than the mean, with
an under-pinning minimum value.

All I can suggest is that you send your query to the Met Office (address
on the home page) and ask them.

Martin.


Thanks Martin, at least I know it wasn't something that I'd stupidly
misunderstood!

Mike