WAFC Upper Wind & Upper Air Temperatures Charts
WAFC Upper Wind & Upper Air Temperatures Charts are forecasts of upper winds and upper-air temperatures (for flight levels 50, 100, 140, 180, 240, 300, 340, 390 and 450) and for maximum winds & tropopause heights and temperatures, prepared by a World Area Forecast Centre (WAFC).
These charts are issued four times a day and are valid for 6, 12, 18, 24, 30 and 36 hours after the time of the synoptic data (00.00, 06.00, 12.00 and 18.00 Z) on which the forecasts are based.
