Forecast Accuracy Benchmark

Period: 2026-07-11 to 2026-08-10 (30 days)

Model N Wind Speed (m/s) Wind Dir Temperature (°C)
MAEBiasRMSE MAEBias MAEBias
HARM-FI 2.5 km (Scandinavia)472661.2-0.071.6225.1°+5.9°1.03+0.26
MET Nordic 1 km (Scandinavia)419501.2-0.121.625.3°+6.0°1.04+0.47
HARMONIE-AROME 2.5km882051.21-0.101.6425.5°+5.6°1.04+0.23
HARMONIE 5 km (EU)435651.22-0.531.6233.2°-19.3°0.98+0.20
ICON 7 km (Europe)566841.23-0.451.6526.7°+8.5°1.02+0.10
ICON 13 km (World)803611.28-0.261.7234.6°+9.6°1.83+0.13
HARM-DK 2 km (NW Europe)433971.32-0.591.7525.8°+5.6°1.1+0.36
Zephr-HD 2.6 km (Europe)585471.42-0.011.8933.9°+9.7°1.38+0.24
IFS-HRES 9 km (World)1013981.49+0.171.9640.3°+9.3°1.97-0.06
GDPS 15 km (World)491621.54+0.32239.6°+13.2°1.4+0.11
GFS 13 km (World)1266781.73+0.422.2750.2°+9.9°1.94-0.38
EMHI forecast9521.77+1.082.0736.7°+3.7°1.64+0.29

MAE = Mean Absolute Error. Bias = mean(forecast − obs), positive = model overestimates. RMSE = Root Mean Square Error. Wind direction bias normalized to ±180°. Forecasts matched to nearest observation within ±30 minutes. Sorted by wind speed MAE (best model first).

Generated 2026-08-10 09:00 UTC