The METAR board is a time series display of weather conditions. There are two formats for the board: condensed and expanded.
The condensed view lists any number of stations along the vertical axis and time along the horizontal axis (See Fig 1). Each box (hourly observation) is color coded based on the level of the hazard. Green represents no hazard, yellow minimal hazard, red significant hazard and purple major hazard. The letters in the box represent the cause of the hazard. They are as follows:
There could be multiple hazards but only the top one from this list is shown.
The cutoffs for each color are shown in Fig. 2. The default criteria use the flight category cutoffs
For more detailed site information, click the station identifier. This will open the expanded view for each site. In the expanded view, each weather condition is listed along the vertical axis (See Fig. 3). These are:
Here is a list of the URL options: