GFS vs ECMWF U.S. demand-hub forecast (15-day) - Run #4074
Reporting Date: 2026-10-11T12:00:00Z
Completed
Run Details
- State
- Completed
- Started At
- October 11, 2026 at 12:25 PM
- Completed At
- October 11, 2026 at 12:25 PM
- 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": 4.2736
},
"daily_series": [
{
"cdd_gfs": 0.0,
"hdd_gfs": 2.4083,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 0.5833,
"valid_date": "2026-10-11",
"mean_temp_f_gfs": 62.5917,
"mean_temp_f_ecmwf": 64.4167
},
{
"cdd_gfs": 2.8792,
"hdd_gfs": 0.0,
"cdd_ecmwf": 4.8625,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-12",
"mean_temp_f_gfs": 67.8792,
"mean_temp_f_ecmwf": 69.8625
},
{
"cdd_gfs": 10.375,
"hdd_gfs": 0.0,
"cdd_ecmwf": 10.1167,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-13",
"mean_temp_f_gfs": 75.375,
"mean_temp_f_ecmwf": 75.1167
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 0.0208,
"cdd_ecmwf": 1.3125,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-14",
"mean_temp_f_gfs": 64.9792,
"mean_temp_f_ecmwf": 66.3125
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 7.1292,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 7.3292,
"valid_date": "2026-10-15",
"mean_temp_f_gfs": 57.8708,
"mean_temp_f_ecmwf": 57.6708
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 11.6458,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 8.0208,
"valid_date": "2026-10-16",
"mean_temp_f_gfs": 53.3542,
"mean_temp_f_ecmwf": 56.9792
},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 14.7167,
"valid_date": "2026-10-17",
"mean_temp_f_gfs": 38.6917,
"mean_temp_f_ecmwf": 50.2833
},
{
"cdd_gfs": 0.0,
"hdd_gfs": 20.8333,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 10.5167,
"valid_date": "2026-10-18",
"mean_temp_f_gfs": 44.1667,
"mean_temp_f_ecmwf": 54.4833
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 5.1292,
"valid_date": "2026-10-19",
"mean_temp_f_gfs": 51.9042,
"mean_temp_f_ecmwf": 59.8708
},
{
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"valid_date": "2026-10-20",
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"mean_temp_f_ecmwf": 62.1208
},
{
"cdd_gfs": 0.0,
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"cdd_ecmwf": 0.3625,
"hdd_ecmwf": 0.0,
"valid_date": "2026-10-21",
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"mean_temp_f_ecmwf": 65.3625
},
{
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"valid_date": "2026-10-22",
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"mean_temp_f_ecmwf": 62.4792
},
{
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"valid_date": "2026-10-23",
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"mean_temp_f_ecmwf": 53.5875
},
{
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"valid_date": "2026-10-24",
"mean_temp_f_gfs": 59.2583,
"mean_temp_f_ecmwf": 59.1292
},
{
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"cdd_ecmwf": 0.0,
"hdd_ecmwf": 12.55,
"valid_date": "2026-10-25",
"mean_temp_f_gfs": 61.0083,
"mean_temp_f_ecmwf": 52.45
}
],
"demand_weight": 0.35,
"noaa_region_hint": "midwest",
"cumulative_cdd_gfs": 13.2542,
"cumulative_hdd_gfs": 111.7499,
"cumulative_cdd_ecmwf": 16.6542,
"cumulative_hdd_ecmwf": 81.5292
},
{
"id": "nyc",
"lat": 40.71,
"lon": -74.0,
"label": "East (New York City)",
"divergence": {
"mean_abs_hdd_diff_by_day": 4.4964
},
"daily_series": [
{
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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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"mean_temp_f_ecmwf": 62.4625
},
{
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"hdd_gfs": 2.7167,
"cdd_ecmwf": 0.0,
"hdd_ecmwf": 8.9667,
"valid_date": "2026-10-16",
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},
{
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"mean_temp_f_ecmwf": 49.6083
},
{
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"valid_date": "2026-10-18",
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},
{
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"valid_date": "2026-10-19",
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"mean_temp_f_ecmwf": 56.2625
},
{
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"mean_temp_f_ecmwf": 59.7583
},
{
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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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{
"id": "houston",
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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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"cumulative_cdd_ecmwf": 189.9709,
"cumulative_hdd_ecmwf": 0.0
},
{
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"divergence": {
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},
"daily_series": [
{
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"valid_date": "2026-10-11",
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},
{
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"valid_date": "2026-10-12",
"mean_temp_f_gfs": 66.6375,
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},
{
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},
{
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"valid_date": "2026-10-14",
"mean_temp_f_gfs": 78.35,
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},
{
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},
{
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Feed Information
Feed Type
GfsEcmwfUsDemandHubForecastFeed