For this reason, tropical meteorologists usually replace isobars with streamline arrows which indicate wind and direction without directly relating to the pressure gradient. Shaded areas on weather ...

Wind direction and speed are determined by the patterns of highs, lows and fronts seen on weather maps and by local effects such as seabreezes and thunderstorm downdrafts. Closely spaced isobars ...

Chicago's eastern boundary is formed by Lake Michigan, and the city is divided by the Chicago River into three geographic sections: the North Side, the South Side and the West Side. These sections ...