anione familiar with weather maps?

Question

can u plz teach me how to read a weather map, and what each of the round lines represent

Answer 1

Those waving lines on a weather map represent a spot where the barametric pressure is the same as other points on the same line. The technical name for the places where the the pressures are the same is "isobar." Iso means same and bar means pressure...same pressure.

These isobars are significant indicators for guesstimating the weather. Where isobars represent relatively high pressures, we call that a high pressure area. Where they show relatively low pressures, we call that a low pressure area. High pressure areas are typically good weather (clear and no precip) spots. Low pressure areas are typically bad weather (cloudy and precip) spots.

Weather fronts occur where the high and low pressure areas meet. Most really violent storms, for example, are found on the leading (front) edge of low pressure areas and the back side of high pressure areas. There is often bad weather on the leading edge of high pressure areas and back edge of low, but they are typically not as violent as the storms on the leading edge of low pressure areas.

Isobars are aslo indicators of winds and how violent storms might be. Where the isobars are close together, there is a steep gradient in the barametric pressure. That just means that the pressure changes fast from one line to the next. And when that pressure changes fast from high pressure to low pressure, the winds tend to blow fast because the high pressure behind them is pushing them along.

Picture the high pressure as the top of a waterfall; the low pressure is the bottom of that fall. The water is the wind and it cascades down from the top (high pressure) to the bottom (low pressure).

Like the water, the winds would fall directly down (across) the isobars, but for one thing...the coreolis effect. The coreolis effect tends to make the water (the winds) fall somewhat sidways. And that sideways effect causes the winds to actually circle around the high and low pressure areas. .[See source for more on the coreolis effect.]

On good weather maps, you will see what look like little flags placed every so often on the isobars. The direction the flag poles point is the forecast direction of the wind across that isobar the flag is attached to. The speed of the wind (in knots) is indicated by the number of flags on each pole.

Answer 2

I think you would have to take a Meteorology class to get the specifics. There is way too much information to learn about weather from Answers. Even Weathermen get it wrong most of the time, and they are experts!

If you are talking about the average TV weatherman map, they are isobars that show equal pressure over whatever area they are drawn relative to mean sea level along the same line with a different pressure represented with each line. They help distinguish Highs and Lows relative to each other. It may be higher than normal pressure at both points, but since one is higher than the other, the second area becomes a low relative to the first area...

Answer 3

I forget what the direct link to the sub-page is, but try the website of the people who give all of us all of our weather maps.

Answer 4

If you want and good answer e-mail a weather map and I tell you what it means.

[e-mail]

If your talking about what they show the the news a (MSLP {Mean Sea Level Pressure} Chart). Find one on the net e-mail it to me and I tell you what everything means.