|Precipitation is measured in quantity for a certain time interval, e.g. millimeters per hour. The measurement is always valid for the period preceeding the given time.|
For example, the 3 hour precipitation shown for 12:00 UTC shows the total quantity in mm (= l/m²) between 9:00 UTC and 12:00 UTC.
|Measurement of precipitation is the attempt to represent a large scale non-uniform process by sampling methods, large scale raster images or modelling.|
meteoblue compares precipitation forecasts to measurements based on WMO standards, unless otherwise indicated.
|Precipitation can be measured using 3 methods:|
Measurement units are millimeter, centimeter or inches: 1 millimeter corresponds to 1 liter of water per square meter.
Snow precipitation is measured in centimeters or inches.
meteoblue uses metric units for presenting precipitation: Liquid precipitation is presented in mm for the displayed time period (day or hour). Solid precipitation (snow) is presented in mm of water equivalent (WE), or cm of height for a given time.