GFS vs ECMWF U.S. demand-hub forecast (15-day) - Run #4070
Reporting Date: 2026-10-11T00:00:00Z
Completed
Run Details
- State
- Completed
- Started At
- October 11, 2026 at 12:25 AM
- Completed At
- October 11, 2026 at 12:25 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": 5.2461
},
"daily_series": [
{
"cdd_gfs": 0.0,
"hdd_gfs": 2.6708,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 0.725,
"valid_date": "2026-10-11",
"mean_temp_f_gfs": 62.3292,
"mean_temp_f_ecmwf": 64.275
},
{
"cdd_gfs": 3.1333,
"hdd_gfs": 0.0,
"cdd_ecmwf": 4.1167,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-12",
"mean_temp_f_gfs": 68.1333,
"mean_temp_f_ecmwf": 69.1167
},
{
"cdd_gfs": 10.7208,
"hdd_gfs": 0.0,
"cdd_ecmwf": 9.8583,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-13",
"mean_temp_f_gfs": 75.7208,
"mean_temp_f_ecmwf": 74.8583
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 1.7792,
"cdd_ecmwf": 0.7333,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-14",
"mean_temp_f_gfs": 63.2208,
"mean_temp_f_ecmwf": 65.7333
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 6.3583,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 7.3792,
"valid_date": "2026-10-15",
"mean_temp_f_gfs": 58.6417,
"mean_temp_f_ecmwf": 57.6208
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 6.6042,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 9.5417,
"valid_date": "2026-10-16",
"mean_temp_f_gfs": 58.3958,
"mean_temp_f_ecmwf": 55.4583
},
{
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"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-17",
"mean_temp_f_gfs": 41.5833,
"mean_temp_f_ecmwf": 50.5958
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 14.3708,
"valid_date": "2026-10-18",
"mean_temp_f_gfs": 43.3375,
"mean_temp_f_ecmwf": 50.6292
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-19",
"mean_temp_f_gfs": 48.6708,
"mean_temp_f_ecmwf": 59.675
},
{
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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": 62.875
},
{
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"cdd_ecmwf": 0.0,
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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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},
{
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"valid_date": "2026-10-23",
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},
{
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"valid_date": "2026-10-24",
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"mean_temp_f_ecmwf": 57.8792
},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 6.48,
"valid_date": "2026-10-25",
"mean_temp_f_gfs": 53.9583,
"mean_temp_f_ecmwf": 58.52
}
],
"demand_weight": 0.35,
"noaa_region_hint": "midwest",
"cumulative_cdd_gfs": 13.8541,
"cumulative_hdd_gfs": 139.9834,
"cumulative_cdd_ecmwf": 15.0749,
"cumulative_hdd_ecmwf": 69.2092
},
{
"id": "nyc",
"lat": 40.71,
"lon": -74.0,
"label": "East (New York City)",
"divergence": {
"mean_abs_hdd_diff_by_day": 5.1343
},
"daily_series": [
{
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"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-11",
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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,
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"valid_date": "2026-10-16",
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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": 63.4292,
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},
{
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"valid_date": "2026-10-12",
"mean_temp_f_gfs": 69.3,
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},
{
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"mean_temp_f_gfs": 76.3,
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},
{
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},
{
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},
{
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Feed Information
Feed Type
GfsEcmwfUsDemandHubForecastFeed