TWC Today Forums

Weather Discussion => General Weather Chat => Topic started by: jtmal0723 on March 05, 2009, 04:20:06 PM

Title: Here's something interesting
Post by: jtmal0723 on March 05, 2009, 04:20:06 PM

I haven't seen a setup like this before... It's two low pressure systems connected by a surface trough.... this whole thing looks like a spider web, lol :lol: I don't exactly know how this happens but it's an interesting thing to see!

Title: Re: Here's something interesting
Post by: beanboy89 on March 05, 2009, 04:24:44 PM

Here's a clearer version of the map from weather.com:

(http://img4.imageshack.us/img4/8238/curwx600x405.jpg)

Title: Re: Here's something interesting
Post by: phw115wvwx on March 05, 2009, 04:29:20 PM

There can be multiple troughs extending from one low to another.  How many times have you seen a low joined to another low by a front?  That counts, too!

Title: Re: Here's something interesting
Post by: jtmal0723 on March 05, 2009, 04:30:40 PM

Quote from: phw115wvwx on March 05, 2009, 04:29:20 PM

There can be multiple troughs extending from one low to another.  How many times have you seen a low joined to another low by a front?  That counts, too!

I've seen one joint by a front before... I guess I'm asking, what is a "surface trough"?

Title: Re: Here's something interesting
Post by: phw115wvwx on March 05, 2009, 04:34:30 PM

It's just an area on the surface that has lower air pressure than the surrounding areas.  There's no distinguishable difference in air mass across this trough, so they just mark it as a surface trough.  They're still important features as the lower pressure allows for air to rise and create clouds and precipitation.