Simply because weather systems are under the influence of prevailing winds and jet streams. For example 'Nor' easters' come from the south west and swerve and hit up north East. Weather patterns are really why this can happen.
The meotoerologist as sent a satalitte into space and gets the live footage from the video camera and by looking at the video she/he can see that a storm is heading there way. Hope this helped (:
I may help them by, Telling people about weather in news, Or any particular reasons if any inncidents occured like earthquake, zsuname, tornados, or hurricane
To answer this you need to understand what atmospheric pressure a.k.a. barometric pressure is. This is very simply the weight of the air mass that is sitting on top of your location. The pressure...
Although a weathervane does not show you the precise weather, you can interpret the weather from the direction of the wind. In the Northern Hemisphere wind coming from the North usually brings colder...