Dinghy development: weather charts

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weather charts

Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Dinghy development
Forum Discription: The latest moves in the dinghy market
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=1461
Printed Date: 15 Aug 25 at 9:00am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com

Topic: weather charts

Posted By: mike ellis
Subject: weather charts
Date Posted: 12 Feb 06 at 5:35pm

i know fairly well what weather charts mean (red=warm front, blue=cold front isobars etc) but what are the thick black lines that sometimes appear behind fronts? the thing circled in yellow is what i mean.

Replies:

Posted By: mike ellis
Date Posted: 12 Feb 06 at 5:36pm

is it just me that cant see that image? how was i meant to post it?

Posted By: les5269
Date Posted: 12 Feb 06 at 5:44pm

nope I can't see it either

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49er 531 & 5000 5025 and a mirror(now gone to mirror heaven)!

http://www.grafham.org/" rel="nofollow - Grafham water Sailing Club The greatest inland sailing in the country

Posted By: mike ellis
Date Posted: 12 Feb 06 at 5:50pm

so how was i meant to post it?

Posted By: Isis
Date Posted: 12 Feb 06 at 5:54pm

looks like youve put the wrong URL in your post

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Posted By: mike ellis
Date Posted: 12 Feb 06 at 6:04pm

i cant get that picture to work but someone must know what i mean, the black lines that arent fronts or isobars?

Posted By: KnightMare
Date Posted: 12 Feb 06 at 6:36pm

If you are talking about the thick black lines tha apear on the met office charts its and indication of a trough.

"Trough
An elongated area of relatively low surface pressure. The troughs marked on weather charts may also represent an area of low thickness (thickness trough), or a perturbation in the upper troposphere (upper trough). All are associated with increasing cloud and risk of precipitation."

check out http://www.metoffice.gov.uk/weather/charts/index.html - http://www.metoffice.gov.uk/weather/charts/index.html for the original weather chart I looked at

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http://theramblingsofmyinnergeek.blogspot.com/

Posted By: mike ellis
Date Posted: 12 Feb 06 at 7:14pm

not more wind then?

Posted By: HannahJ
Date Posted: 13 Feb 06 at 6:04pm

*cries a little voice in hope*

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MIRROR 64799 "Dolphin"
The pessimist complains about the wind; the optimist hopes it will change; the realist adjusts the sail