Weather is the condition of atmosphere in certain place and time. It can be related with the condition in temperature, and the presence of rain, win, sun, etc. However, in certain situations the condition can be very dangerous when the severe weather occurs. One of the weather phenomena that can be very dangerous is the extra-tropical cyclones. The situation can be formed in lake effect snows, squall lines within the warm sector, ground blizzards, tornadoes near the warm front, etc. To prevent us from the effect of the weather, we need to predict it so that precautions can be prepared. The prediction can be gained from surface weather observations. |