GFS vs ECMWF U.S. demand-hub forecast (15-day) - Run #4071
Reporting Date: 2026-10-11T06:00:00Z
Completed
Run Details
- State
- Completed
- Started At
- October 11, 2026 at 06:25 AM
- Completed At
- October 11, 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": 4.5969
},
"daily_series": [
{
"cdd_gfs": 0.0,
"hdd_gfs": 2.4,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 0.6458,
"valid_date": "2026-10-11",
"mean_temp_f_gfs": 62.6,
"mean_temp_f_ecmwf": 64.3542
},
{
"cdd_gfs": 3.025,
"hdd_gfs": 0.0,
"cdd_ecmwf": 4.3125,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-12",
"mean_temp_f_gfs": 68.025,
"mean_temp_f_ecmwf": 69.3125
},
{
"cdd_gfs": 11.4708,
"hdd_gfs": 0.0,
"cdd_ecmwf": 9.6708,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-13",
"mean_temp_f_gfs": 76.4708,
"mean_temp_f_ecmwf": 74.6708
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 0.5208,
"cdd_ecmwf": 1.3667,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-14",
"mean_temp_f_gfs": 64.4792,
"mean_temp_f_ecmwf": 66.3667
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 7.8083,
"valid_date": "2026-10-15",
"mean_temp_f_gfs": 56.8875,
"mean_temp_f_ecmwf": 57.1917
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 9.8667,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 11.1042,
"valid_date": "2026-10-16",
"mean_temp_f_gfs": 55.1333,
"mean_temp_f_ecmwf": 53.8958
},
{
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"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-17",
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"mean_temp_f_ecmwf": 50.5958
},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 14.3708,
"valid_date": "2026-10-18",
"mean_temp_f_gfs": 41.4667,
"mean_temp_f_ecmwf": 50.6292
},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 5.325,
"valid_date": "2026-10-19",
"mean_temp_f_gfs": 47.1833,
"mean_temp_f_ecmwf": 59.675
},
{
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"valid_date": "2026-10-20",
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"mean_temp_f_ecmwf": 62.875
},
{
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"valid_date": "2026-10-21",
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"mean_temp_f_ecmwf": 63.2625
},
{
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"hdd_ecmwf": 0.0,
"valid_date": "2026-10-22",
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"mean_temp_f_ecmwf": 65.2583
},
{
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"valid_date": "2026-10-23",
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},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 7.1208,
"valid_date": "2026-10-24",
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"mean_temp_f_ecmwf": 57.8792
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 6.48,
"valid_date": "2026-10-25",
"mean_temp_f_gfs": 47.5833,
"mean_temp_f_ecmwf": 58.52
}
],
"demand_weight": 0.35,
"noaa_region_hint": "midwest",
"cumulative_cdd_gfs": 14.4958,
"cumulative_hdd_gfs": 137.55,
"cumulative_cdd_ecmwf": 15.7166,
"cumulative_hdd_ecmwf": 71.1216
},
{
"id": "nyc",
"lat": 40.71,
"lon": -74.0,
"label": "East (New York City)",
"divergence": {
"mean_abs_hdd_diff_by_day": 3.5793
},
"daily_series": [
{
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"cdd_ecmwf": 0.0,
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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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},
{
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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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{
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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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"label": "South (Atlanta)",
"divergence": {
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},
"daily_series": [
{
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"mean_temp_f_gfs": 63.9,
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},
{
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"valid_date": "2026-10-12",
"mean_temp_f_gfs": 68.3,
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},
{
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},
{
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"mean_temp_f_gfs": 78.1583,
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},
{
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},
{
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Feed Information
Feed Type
GfsEcmwfUsDemandHubForecastFeed