How accurate were we?

The season is still running, so this is a partial scorecard. It is here now rather than published at the end because hiding it until the numbers look good would defeat the point.

23/46

Inside the window

36/46

Inside window plus band

0

Median miss, days

By how far ahead the call was made

This is the table that matters. Calling a peak three days out is easy. Calling it in late August is the thing worth judging us on. When we missed, the mean miss across every call was 2.1 days.

Lead timeCallsInside the windowMean miss
0 to 7 days ahead98 (89%)0.3 days
8 to 14 days ahead96 (67%)0.6 days
15 to 28 days ahead189 (50%)1.8 days
More than 28 days ahead100 (0%)5.4 days

By location

Algonquin, Highway 60 corridor

Real peak Oct 3 · reported at peak Sep 29 to Oct 7

Frozen onWe saidLead timeResult
Sep 7Sep 25 – Oct 3 ± 5.426 days outInside the window
Sep 14Sep 26 – Oct 4 ± 4.519 days outInside the window
Sep 21Oct 1 – Oct 9 ± 1.812 days outInside the window
Sep 28Sep 30 – Oct 8 ± 1.55 days outInside the window

Arrowhead

Real peak Oct 1 · reported at peak Oct 1 to Oct 8

Frozen onWe saidLead timeResult
Sep 7Sep 29 – Oct 7 ± 6.424 days outInside the window
Sep 14Sep 30 – Oct 8 ± 5.417 days outInside the window
Sep 21Oct 2 – Oct 10 ± 3.910 days outMissed by 1 day, inside the band
Sep 28Sep 30 – Oct 8 ± 2.63 days outInside the window

Oxtongue River and Ragged Falls

Real peak Oct 1 · reported at peak Sep 29 to Oct 8

Frozen onWe saidLead timeResult
Sep 7Sep 24 – Oct 2 ± 5.224 days outInside the window
Sep 14Sep 27 – Oct 5 ± 4.617 days outInside the window
Sep 21Oct 3 – Oct 11 ± 3.710 days outMissed by 2 days, inside the band
Sep 28Oct 4 – Oct 12 ± 2.73 days outMissed by 3 days

Killarney

Real peak Oct 15 · reported at peak Oct 15 to Oct 15

Frozen onWe saidLead timeResult
Sep 7Sep 28 – Oct 6 ± 6.238 days outMissed by 9 days
Sep 14Sep 28 – Oct 6 ± 4.831 days outMissed by 9 days
Sep 21Oct 3 – Oct 11 ± 4.124 days outMissed by 4 days, inside the band
Sep 28Oct 6 – Oct 14 ± 3.117 days outMissed by 1 day, inside the band
Oct 5Oct 10 – Oct 18 ± 2.210 days outInside the window
Oct 12Oct 9 – Oct 17 ± 4.23 days outInside the window

Awenda

Real peak Oct 14 · reported at peak Oct 14 to Oct 14

Frozen onWe saidLead timeResult
Sep 7Oct 4 – Oct 12 ± 7.537 days outMissed by 2 days, inside the band
Sep 14Oct 5 – Oct 13 ± 6.630 days outMissed by 1 day, inside the band
Sep 21Oct 5 – Oct 13 ± 5.123 days outMissed by 1 day, inside the band
Sep 28Oct 9 – Oct 17 ± 3.916 days outInside the window
Oct 5Oct 9 – Oct 17 ± 2.49 days outInside the window
Oct 12Oct 11 – Oct 19 ± 1.52 days outInside the window

Mono Cliffs and Hockley Valley

Real peak Oct 16 · reported at peak Oct 16 to Oct 16

Frozen onWe saidLead timeResult
Sep 7Oct 4 – Oct 12 ± 7.139 days outMissed by 4 days, inside the band
Sep 14Sep 30 – Oct 8 ± 4.632 days outMissed by 8 days
Sep 21Oct 2 – Oct 10 ± 3.525 days outMissed by 6 days
Sep 28Oct 5 – Oct 13 ± 2.918 days outMissed by 3 days
Oct 5Oct 6 – Oct 14 ± 211 days outMissed by 2 days, inside the band
Oct 12Oct 9 – Oct 17 ± 1.54 days outInside the window

Forks of the Credit

Real peak Oct 16 · reported at peak Oct 16 to Oct 16

Frozen onWe saidLead timeResult
Sep 7Oct 7 – Oct 15 ± 7.639 days outMissed by 1 day, inside the band
Sep 14Oct 1 – Oct 9 ± 4.832 days outMissed by 7 days
Sep 21Oct 5 – Oct 13 ± 425 days outMissed by 3 days, inside the band
Sep 28Oct 8 – Oct 16 ± 3.418 days outInside the window
Oct 5Oct 8 – Oct 16 ± 2.311 days outInside the window
Oct 12Oct 8 – Oct 16 ± 1.54 days outInside the window

Lake Superior

Real peak Oct 8 · reported at peak Oct 8 to Oct 8

Frozen onWe saidLead timeResult
Sep 7Sep 26 – Oct 4 ± 6.331 days outMissed by 4 days, inside the band
Sep 14Sep 28 – Oct 6 ± 4.824 days outMissed by 2 days, inside the band
Sep 21Oct 2 – Oct 10 ± 3.117 days outInside the window
Sep 28Oct 3 – Oct 11 ± 1.510 days outInside the window
Oct 5Oct 4 – Oct 12 ± 2.93 days outInside the window

Sleeping Giant, Thunder Bay

Real peak Oct 10 · reported at peak Oct 10 to Oct 12

Frozen onWe saidLead timeResult
Sep 7Sep 23 – Oct 1 ± 5.933 days outMissed by 9 days
Sep 14Sep 24 – Oct 2 ± 4.626 days outMissed by 8 days
Sep 21Sep 27 – Oct 5 ± 3.619 days outMissed by 5 days
Sep 28Oct 5 – Oct 13 ± 2.912 days outInside the window
Oct 5Oct 5 – Oct 13 ± 5.55 days outInside the window

Scoring rule · the real peak is the middle of the run of days Ontario Parks reported a location at peak, not the first day, because using the first day would reward a forecast that ran early and clipped the leading edge. A call counts as a hit only if the real peak fell inside the window we published; landing inside the confidence band is reported separately and is a weaker result. Calls frozen after a location had already peaked are excluded, and locations with no Ontario Parks coverage are left out rather than graded against our own ground reports. Full method. Writing about this before then? The press page has the current forecast, and the frozen log is available on request.