Surface weather analysis United States, temperature and dewpoint are plotted in degrees Celsius. The wind barb points in the direction from which the wind is coming. Each full flag on the wind barb represents of wind, each half flag represents . When winds reach , a filled in triangle is used for each of wind. In the United States, rainfall plotted in the corner of the station model are in inches. The international standard rainfall measurement unit is the millimeter. Once a map has a field of station models plotted, the analyzing isobars (lines of equal pressure), isallobars (lines of equal pressure change),
Extreme points of Earth Extreme points of Earth This is a list of extreme points of Earth, the geographical locations that are farther north or south than, higher or lower in elevation than, or farthest inland or out to sea from, any other locations on the landmasses, continents or countries. For other lists of extreme points on Earth, including places that hold temperature and weather records, see Extremes on Earth, Lists of extreme points, and List of weather records. The lowest railroad station was the Japanese Yoshioka-Kaitei Station, at below sea level, but it was closed in 2014. The lowest railroad not inside a