GEFS provides alternate forecasts of the global atmosphere. Use SKC’s product selector to explore precipitation thresholds, QPF summaries, temperature, anomalies and member-contour guidance.
Access: GEFS maps and precipitation plumes are free without signing in. GEFS temperature plumes require Premium.
Go to interactive viewerRead the guideStart with a product and read its units and accumulation period. Step through valid times, compare runs where available, then use a point plume to examine the range near a location.
A member fraction is not a calibrated local forecast. The mean can smooth extremes; zooming does not add model resolution.
Check initialization, valid time and units. Use official forecasts and warnings for safety decisions.