WAFC Significant Weather Charts

WAFC Significant Weather Charts are forecasts of significant weather phenomena (a.o. thunderstorms, squall lines, turbulence, icing, clouds, convergence zones, frontal systems, jetstreams and volcanic ash), prepared by a World Area Forecast Centre (WAFC).

These charts are issued four times a day for fixed validity times of 00.00, 06.00, 12.00 and 18.00 Z and this for high levels (between flight levels 250 to 630) and medium levels (between flight levels 100 to 250). The different weather phenomena are indicated on the charts with their international symbols.

AIM Briefing

Annual report 2017  
Video: The weather - Observations and forecasts  
Meteorological services - Accurate weather information for a safe airspace   (0.52 Mb)