WEATHERMODELS.COM  |  ECMWF EC46  |  DAILY EC46 · DAILY TO 46 DAYS
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[PREVIOUS EC46 Daily FORECAST CYCLES]

ECMWF EC46 [Daily to Day 46]

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EC46 WEEKLY MAPS (anomalies, chances, extremes) [LINK]
EC46 CITY METEOGRAMS (46 days at 227 cities) [LINK]
Information
  • ECMWF extended-range ensemble (EC46, 101 members, run daily at 00Z) maps of each UTC day to day 46, from the ensemble mean (and its spread) every 6 hours: the day's mean, high and low, 24-hour precipitation and snow, running 5- and 7-day means and totals that end on the day (day 10's 5-day map is the 6-10 day window, day 14's 7-day map the 8-14), totals from day 1, heating and cooling degree days (base 65F, from the mean of the high and low), and the change from the run 24 hours before. These are means of the ensemble: they smooth what the members disagree on, more so the longer the lead. A run is published about 21-22Z. Weekly anomalies, chances and extremes: EC46 WEEKLY.
  • LAGGED (6 RUNS) shows the current run beside the five before it, for the same UTC day: how the forecast for it has changed run to run (its day number counts from each run, so it differs).
  • SAVE LOOP makes an MP4 or GIF of what you are looking at, for all the frames or just a range, in your browser; SAVE IMAGE saves the map on screen, or the six lagged runs on one PNG. Nothing is uploaded.
  • A service of weathermodels.com. The maps are created from ECMWF's extended-range ensemble (EC46: 101 members to 46 days, 00Z daily), the 6-hourly ensemble mean and spread of its O320 grid as Open-Meteo publishes them, at 0.25°.