Weather Map

[asterroc]

Anyone *cough*meredithanne42*cough* know what the yellow line with half-circles over west Texas means? I've never seen it before.



ETA: And while I'm at it, why does it make a difference if a cold front moves under warm air, or a warm front moves over cold air? They're the same except for the stationary ground under them, why does that affect them?

Comments

[sammka.livejournal.com]

Tornadoes!

(I just made that up)

[zandperl.livejournal.com]

Nah, those're supposed to be along the Missouri River today, and I think that's more North and East.

[sammka.livejournal.com]

A more educated guess:

from looking at the other maps, absolutely nothing interesting is happening in that same area. Perhaps it's a high pressure system.

[zandperl.livejournal.com]

Nope, high pressure systems are marked with an H, lows with an L, and various other things with other symbols. I could probably dig it up more deeply elsewhere, but I'm lazy. :-P

[sammka.livejournal.com]

(that was probably wrong too)

As for moving air: maybe it's the airplane effect, in which laterally-moving air has less up/down pressure?

[zandperl.livejournal.com]

Which begs the relativity question I was implying with my ETA. I guess the simplest answer is since we're stationary on the ground, it'll make a difference how fast things are moving relative to us. But if we could put a state on wheels and move it under the fronts, we should get the same effect. Ooh, "States on Wheels, coming to an arena near you!"