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This page provides an overview of regional forecast skill for the SON 2025 period. A detailed description of outputs automatically updated on this page can be found on the following section's overview.

Regional skill score files

All regional RPSSs are available to download via the following link:

SON 2025 Regional RPSSs (Excel format)

Top 10 teams of regional forecast window 1, period-aggregated, variable-averaged RPSSs

Teamname	Team_rank	Modelname	Model_rank	Global	Tropics	NHem. ExTro.	SHem. ExTro.	NHem. Polar	SHem. Polar	Europe	N. Amer.	S. Amer.	Africa	Asia	Oceania
AIFS	1	AIFShera	1	0.087	0.108	0.083	-0.059	0.044	0.024	0.092	-0.028	0.055	0.057	0.147	0.061
AIFS	1	AIFSgaia	3	0.081	0.133	0.05	-0.08	0.034	-0.024	0.091	-0.074	-0.03	0.139	0.156	0.035
AIFS	1	AIFSthalassa	6	0.075	0.129	0.037	-0.127	0.029	-0.05	0.039	-0.046	-0.113	0.128	0.129	0.061
CMAandFDU	2	FengshunAdjust	2	0.085	0.171	0.015	-0.073	0.005	-0.022	0.063	-0.024	0.095	0.054	0.113	0.053
CMAandFDU	2	FengshunHybrid	7	0.064	0.125	0.002	-0.047	0.046	-0.021	0.037	-0.026	-0.064	0.107	0.122	-0.023
CMAandFDU	2	Fengshun	10	0.035	0.086	-0.006	-0.082	0.048	-0.041	0.066	-0.041	-0.008	0.03	0.083	0.104
MicroEnsemble	3	MicroDuet	4	0.077	0.108	0.049	-0.022	0.032	0.065	0.105	-0.002	-0.019	0.063	0.109	0.092
MicroEnsemble	3	StillLearning	5	0.077	0.102	0.058	-0.009	0.04	0.064	0.119	-0.004	-0.002	0.056	0.113	0.082
MicroEnsemble	3	Huracan	9	0.047	0.044	0.06	-0.045	0.02	0.069	0.104	-0.005	-0.09	-0.015	0.099	0.04
LP	4	LPM	8	0.062	0.083	0.061	-0.014	0.024	0.017	0.087	0.019	0.032	0.021	0.092	-0.021
KITKangu	5	KanguPlusPlus	11	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
KITKangu	5	KanguParametricPrediction	11	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
scienceAI	5	findforecast	11	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
scienceAI	5	zephyr	11	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
scienceAI	5	ngcm	11	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
KITKangu	5	KanguS2SEasyUQ	39	-1.235	-1.34	-1.045	-1.357	-1.094	-1.265	-1.194	-0.876	-1.493	-1.446	-1.178	-1.673
CliMA	7	CliMAWeather	16	-0.04	-0.039	-0.052	-0.24	-0.037	0.063	0.011	-0.087	-0.151	-0.024	-0.019	-0.137
CliMA	7	CliMAWeather2	17	-0.04	-0.041	-0.049	-0.238	-0.039	0.068	0.008	-0.086	-0.159	-0.025	-0.017	-0.129
WindBorne	8	WeatherMesh	18	-0.125	-0.082	-0.206	-0.259	-0.153	-0.132	-0.202	-0.187	-0.14	-0.184	-0.141	-0.358
FengWuW2S	9	FengWu2	19	-0.26	-0.135	-0.434	-0.255	-0.471	-0.25	-0.732	-0.042	-0.124	-0.452	-0.491	-0.126
FengWuW2S	9	FengWu	22	-0.33	-0.385	-0.331	-0.388	-0.27	-0.177	-0.462	-0.162	-0.524	-0.629	-0.393	-0.269
Sibyl	10	ClimSDE	20	-0.298	-0.344	-0.306	-0.515	-0.19	-0.364	-0.277	-0.186	-0.28	-0.519	-0.315	-0.572

Top 10 teams of regional forecast window 2, period-aggregated, variable-averaged RPSSs

Teamname	Team_rank	Modelname	Model_rank	Global	Tropics	NHem. ExTro.	SHem. ExTro.	NHem. Polar	SHem. Polar	Europe	N. Amer.	S. Amer.	Africa	Asia	Oceania
CMAandFDU	1	FengshunAdjust	1	0.061	0.117	0.029	0.002	0.033	-0.014	0.003	0.058	0.133	0.11	0.072	0.129
CMAandFDU	1	FengshunHybrid	2	0.053	0.08	0.032	0.028	0.025	0.02	0.01	0.027	0.06	0.065	0.077	0.047
CMAandFDU	1	Fengshun	14	-0.002	0.001	0.006	0.029	0.053	-0.08	0.006	-0.024	0.007	-0.077	0.042	0.078
MicroEnsemble	2	StillLearning	3	0.051	0.099	0.006	0.039	0.045	-0.022	-0.019	0.019	0.095	0.083	0.055	0.094
MicroEnsemble	2	MicroDuet	4	0.045	0.087	0.0	0.047	0.042	-0.013	-0.026	0.046	0.114	0.017	0.044	0.103
MicroEnsemble	2	Huracan	8	0.009	0.021	-0.017	0.053	0.032	-0.044	-0.047	0.032	0.048	-0.06	0.001	0.059
LP	3	LPM	5	0.036	0.056	0.026	0.044	0.022	-0.059	-0.002	0.036	0.077	0.024	0.066	0.006
AIFS	4	AIFSgaia	6	0.024	0.04	-0.013	0.032	0.029	0.029	-0.017	-0.051	0.118	0.009	0.033	0.009
AIFS	4	AIFShera	7	0.009	0.014	-0.02	0.005	0.045	-0.015	0.009	-0.083	0.078	0.007	0.019	0.061
AIFS	4	AIFSthalassa	15	-0.005	-0.028	0.0	-0.007	0.021	0.026	0.013	-0.046	0.04	-0.08	0.03	-0.117
KITKangu	5	KanguPlusPlus	9	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
KITKangu	5	KanguParametricPrediction	9	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
scienceAI	5	findforecast	9	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
scienceAI	5	zephyr	9	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
scienceAI	5	ngcm	9	0.0	-0.0	-0.0	-0.0	0.0	0.0	0.0	0.0	-0.0	-0.0	0.0	-0.0
KITKangu	5	KanguS2SEasyUQ	39	-1.39	-1.441	-1.309	-0.861	-1.343	-1.442	-1.219	-1.261	-1.532	-1.509	-1.364	-1.174
CliMA	7	CliMAWeather	16	-0.1	-0.138	-0.114	-0.127	-0.031	0.024	-0.122	-0.12	-0.117	-0.269	-0.103	0.089
CliMA	7	CliMAWeather2	17	-0.106	-0.142	-0.123	-0.138	-0.037	0.02	-0.134	-0.133	-0.13	-0.278	-0.102	0.09
FengWuW2S	8	FengWu2	18	-0.264	-0.203	-0.457	0.008	-0.308	-0.054	-0.301	-0.058	-0.098	-0.276	-0.616	-0.282
FengWuW2S	8	FengWu	20	-0.35	-0.476	-0.363	-0.106	-0.205	0.007	-0.271	-0.139	-0.587	-0.678	-0.472	-0.333
NordicS2S	9	NordicS2S1	19	-0.315	-0.342	-0.24	-0.25	-0.161	-0.439	-0.153	-0.165	-0.283	-0.584	-0.259	-0.272
NordicS2S	9	NordicS2S3	27	-0.527	-0.778	-0.28	-0.111	-0.328	-0.427	-0.321	-0.477	-0.704	-0.923	-0.413	-0.589
NordicS2S	9	NordicS2S2	29	-0.606	-0.731	-0.654	-0.764	-0.222	-0.092	-0.37	-0.669	-0.78	-0.854	-0.503	-0.553
Sibyl	10	ClimSDE	21	-0.386	-0.392	-0.319	-0.779	-0.261	-0.506	-0.276	-0.345	-0.634	-0.409	-0.22	-0.299