GFS vs ECMWF U.S. demand-hub forecast (15-day) - Run #4063
Reporting Date: 2026-10-10T06:00:00Z
Completed
Run Details
- State
- Completed
- Started At
- October 10, 2026 at 06:25 AM
- Completed At
- October 10, 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": 4.6181
},
"daily_series": [
{
"cdd_gfs": 1.0667,
"hdd_gfs": 0.0,
"cdd_ecmwf": 0.925,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-10",
"mean_temp_f_gfs": 66.0667,
"mean_temp_f_ecmwf": 65.925
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 1.9292,
"cdd_ecmwf": 0.1625,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-11",
"mean_temp_f_gfs": 63.0708,
"mean_temp_f_ecmwf": 65.1625
},
{
"cdd_gfs": 8.6667,
"hdd_gfs": 0.0,
"cdd_ecmwf": 3.95,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-12",
"mean_temp_f_gfs": 73.6667,
"mean_temp_f_ecmwf": 68.95
},
{
"cdd_gfs": 6.0333,
"hdd_gfs": 0.0,
"cdd_ecmwf": 8.1208,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-13",
"mean_temp_f_gfs": 71.0333,
"mean_temp_f_ecmwf": 73.1208
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 5.3792,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 3.5167,
"valid_date": "2026-10-14",
"mean_temp_f_gfs": 59.6208,
"mean_temp_f_ecmwf": 61.4833
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 8.2625,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 6.55,
"valid_date": "2026-10-15",
"mean_temp_f_gfs": 56.7375,
"mean_temp_f_ecmwf": 58.45
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 5.4875,
"valid_date": "2026-10-16",
"mean_temp_f_gfs": 61.3542,
"mean_temp_f_ecmwf": 59.5125
},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 10.5083,
"valid_date": "2026-10-17",
"mean_temp_f_gfs": 48.9792,
"mean_temp_f_ecmwf": 54.4917
},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 13.6542,
"valid_date": "2026-10-18",
"mean_temp_f_gfs": 42.525,
"mean_temp_f_ecmwf": 51.3458
},
{
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"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-19",
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"mean_temp_f_ecmwf": 56.4333
},
{
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"valid_date": "2026-10-20",
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"mean_temp_f_ecmwf": 62.1
},
{
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"hdd_ecmwf": 0.0,
"valid_date": "2026-10-21",
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},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
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"valid_date": "2026-10-22",
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},
{
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"hdd_ecmwf": 2.6417,
"valid_date": "2026-10-23",
"mean_temp_f_gfs": 59.9,
"mean_temp_f_ecmwf": 62.3583
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.52,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-24",
"mean_temp_f_gfs": 57.5208,
"mean_temp_f_ecmwf": 65.52
}
],
"demand_weight": 0.35,
"noaa_region_hint": "midwest",
"cumulative_cdd_gfs": 15.7667,
"cumulative_hdd_gfs": 122.4626,
"cumulative_cdd_ecmwf": 15.97,
"cumulative_hdd_ecmwf": 64.5584
},
{
"id": "nyc",
"lat": 40.71,
"lon": -74.0,
"label": "East (New York City)",
"divergence": {
"mean_abs_hdd_diff_by_day": 4.5224
},
"daily_series": [
{
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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": "2026-10-15",
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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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"divergence": {
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},
"daily_series": [
{
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"mean_temp_f_ecmwf": 62.275
},
{
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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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Feed Information
Feed Type
GfsEcmwfUsDemandHubForecastFeed