GFS vs ECMWF U.S. demand-hub forecast (15-day) - Run #4084
Reporting Date: 2026-10-12T06:00:00Z
Completed
Run Details
- State
- Completed
- Started At
- October 12, 2026 at 06:25 AM
- Completed At
- October 12, 2026 at 06:25 AM
- Duration
- less than a minute
Data Preview
{
"models": {
"gfs": "gfs_seamless",
"ecmwf": "ecmwf_ifs025"
},
"source": "Open-Meteo",
"locations": [
{
"id": "chicago",
"lat": 41.85,
"lon": -87.65,
"label": "Midwest (Chicago)",
"divergence": {
"mean_abs_hdd_diff_by_day": 2.6158
},
"daily_series": [
{
"cdd_gfs": 2.65,
"hdd_gfs": 0.0,
"cdd_ecmwf": 5.0708,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-12",
"mean_temp_f_gfs": 67.65,
"mean_temp_f_ecmwf": 70.0708
},
{
"cdd_gfs": 8.3208,
"hdd_gfs": 0.0,
"cdd_ecmwf": 10.6083,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-13",
"mean_temp_f_gfs": 73.3208,
"mean_temp_f_ecmwf": 75.6083
},
{
"cdd_gfs": 0.6417,
"hdd_gfs": 0.0,
"cdd_ecmwf": 1.9917,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-14",
"mean_temp_f_gfs": 65.6417,
"mean_temp_f_ecmwf": 66.9917
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 6.375,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 3.5083,
"valid_date": "2026-10-15",
"mean_temp_f_gfs": 58.625,
"mean_temp_f_ecmwf": 61.4917
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 10.5792,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 7.7958,
"valid_date": "2026-10-16",
"mean_temp_f_gfs": 54.4208,
"mean_temp_f_ecmwf": 57.2042
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 17.0708,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 15.4417,
"valid_date": "2026-10-17",
"mean_temp_f_gfs": 47.9292,
"mean_temp_f_ecmwf": 49.5583
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 13.7958,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 12.6458,
"valid_date": "2026-10-18",
"mean_temp_f_gfs": 51.2042,
"mean_temp_f_ecmwf": 52.3542
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 6.8042,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 6.6208,
"valid_date": "2026-10-19",
"mean_temp_f_gfs": 58.1958,
"mean_temp_f_ecmwf": 58.3792
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 1.8917,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 4.475,
"valid_date": "2026-10-20",
"mean_temp_f_gfs": 63.1083,
"mean_temp_f_ecmwf": 60.525
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 1.7,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 4.2208,
"valid_date": "2026-10-21",
"mean_temp_f_gfs": 63.3,
"mean_temp_f_ecmwf": 60.7792
},
{
"cdd_gfs": 0.45,
"hdd_gfs": 0.0,
"cdd_ecmwf": 1.8333,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-22",
"mean_temp_f_gfs": 65.45,
"mean_temp_f_ecmwf": 66.8333
},
{
"cdd_gfs": 1.2458,
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 0.9375,
"valid_date": "2026-10-23",
"mean_temp_f_gfs": 66.2458,
"mean_temp_f_ecmwf": 64.0625
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 13.5125,
"valid_date": "2026-10-24",
"mean_temp_f_gfs": 55.5042,
"mean_temp_f_ecmwf": 51.4875
},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 19.7583,
"valid_date": "2026-10-25",
"mean_temp_f_gfs": 57.1583,
"mean_temp_f_ecmwf": 45.2417
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 17.8867,
"valid_date": "2026-10-26",
"mean_temp_f_gfs": 55.7625,
"mean_temp_f_ecmwf": 47.1133
}
],
"demand_weight": 0.35,
"noaa_region_hint": "midwest",
"cumulative_cdd_gfs": 13.3083,
"cumulative_hdd_gfs": 84.7917,
"cumulative_cdd_ecmwf": 19.5041,
"cumulative_hdd_ecmwf": 106.8032
},
{
"id": "nyc",
"lat": 40.71,
"lon": -74.0,
"label": "East (New York City)",
"divergence": {
"mean_abs_hdd_diff_by_day": 3.3159
},
"daily_series": [
{
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"hdd_gfs": 5.8208,
"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-12",
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},
{
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},
{
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},
{
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},
{
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},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 14.45,
"valid_date": "2026-10-17",
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"mean_temp_f_ecmwf": 50.55
},
{
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"valid_date": "2026-10-18",
"mean_temp_f_gfs": 44.8542,
"mean_temp_f_ecmwf": 49.0458
},
{
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"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-19",
"mean_temp_f_gfs": 54.075,
"mean_temp_f_ecmwf": 53.5417
},
{
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"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-20",
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"mean_temp_f_ecmwf": 57.8625
},
{
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"cdd_ecmwf": 0.0,
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"mean_temp_f_ecmwf": 56.7375
},
{
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"cdd_ecmwf": 0.0,
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},
{
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"mean_temp_f_ecmwf": 54.2208
},
{
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},
{
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},
{
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}
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"cumulative_cdd_ecmwf": 6.65,
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},
{
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},
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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}
],
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},
{
"id": "houston",
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"divergence": {
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},
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{
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},
{
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},
{
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},
{
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},
{
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},
{
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},
{
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"mean_temp_f_ecmwf": 74.975
},
{
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},
{
"cdd_gfs": 9.0042,
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"valid_date": "2026-10-20",
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},
{
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},
{
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},
{
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"mean_temp_f_gfs": 79.1833,
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},
{
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},
{
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},
{
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}
],
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"cumulative_hdd_gfs": 0.0,
"cumulative_cdd_ecmwf": 198.92,
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},
{
"id": "atlanta",
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"lon": -84.38,
"label": "South (Atlanta)",
"divergence": {
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},
"daily_series": [
{
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"hdd_gfs": 0.0,
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"valid_date": "2026-10-12",
"mean_temp_f_gfs": 66.9667,
"mean_temp_f_ecmwf": 68.4083
},
{
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"hdd_ecmwf": 0.0,
"valid_date": "2026-10-13",
"mean_temp_f_gfs": 71.275,
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},
{
"cdd_gfs": 13.2958,
"hdd_gfs": 0.0,
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"mean_temp_f_gfs": 78.2958,
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},
{
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"hdd_ecmwf": 0.0,
"valid_date": "2026-10-15",
"mean_temp_f_gfs": 79.1167,
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},
{
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"mean_temp_f_gfs": 78.6417,
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},
{
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Feed Information
Feed Type
GfsEcmwfUsDemandHubForecastFeed