{ "number": 1040, "headline": "The ledger, through September 10", "standfirst": "Mean absolute temperature error runs 2.21\u00b0F at day 1 and 3.33\u00b0F at day 7, over 327,609 settled forecast-observation pairs.", "desk": "ledger", "dateline": { "place": "The Ledger", "state": null, "lat": null, "lon": null, "site_key": null, "site_name": null, "site_url": null, "accent": null }, "edition": "2026-09-10", "published": "2026-09-10T12:29:55Z", "updated": null, "access": "free", "body_html": "

Every forecast this network publishes for a station with an ASOS report is compared against that report once the valid time has passed, and the residual is written down. This is the standing table for August 11\u2013September 10, 2026.

LeadNDFDNBMpairs
Day 12.272.2152,403
Day 22.452.4050,146
Day 32.682.5947,722
Day 42.852.7645,292
Day 53.072.9642,897
Day 63.273.1640,486
Day 73.523.3330,971
Day 8\u20143.6217,692

Mean absolute error, \u00b0F, temperature. ASOS reports at :53 and the forecast is stamped on the hour, so a forecast is paired with the nearest observation within 30 minutes and otherwise left unscored.

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