Alta Collins precipitation, MOS round 3

Issued Sat 2026-10-10 07:00 MDT (replay, models from the ClickHouse archive) · cln_precip_r3_20261024 · HRRR 4-point mean

−6 h−1 h+1 h+6 hnow
Storms at CLN since 10-19 12:00 MDT (at least 0.05 in; current sources and cut-offs kept)

In hand: Gauge through 10-10 06:00 MDT · HRRR 1010 12Z, f01–f05 · GFS 1010 06Z · GEFS 1010 06Z · AIFS single 1010 06Z

Model by hour: C2 × 16

Hour to (MDT)ModelpIf wetCalled, p ≥ 0.5Called, p ≥ 0.4Called, p ≥ 0.3ExpectedLikely, p ≥ 0.5Phantom, p < 0.5GaugeHRRR leadCyclesGauge leadGFS leadGEFS lead
10-10 08:00C20.390.0400.0000.0000.0400.0150.0000.0150.04217288
10-10 09:00C20.460.0470.0000.0470.0470.0220.0000.0220.01316399
10-10 10:00C20.240.0300.0000.0000.0000.0070.0000.0070.0441541010
10-10 11:00C20.430.0540.0000.0540.0540.0230.0000.0230.1151451111
10-10 12:00C20.490.0540.0000.0540.0540.0260.0000.0260.2671261212
10-10 13:00C20.150.0320.0000.0000.0000.0050.0000.0050.0181171313
10-10 14:00C20.030.0310.0000.0000.0000.0010.0000.0010.0091081414
10-10 15:00C20.020.0230.0000.0000.0000.0010.0000.0010.0010991515
10-10 16:00C20.010.0220.0000.0000.0000.0000.0000.0000.18118101616
10-10 17:00C20.020.0220.0000.0000.0000.0000.0000.0000.05127111717
10-10 18:00C20.020.0220.0000.0000.0000.0000.0000.0000.00136121818
10-10 19:00C20.030.0220.0000.0000.0000.0010.0000.0010.00145131919
10-10 20:00C20.030.0260.0000.0000.0000.0010.0000.0010.00154142020
10-10 21:00C20.030.0390.0000.0000.0000.0010.0000.0010.00163152121
10-10 22:00C20.260.0360.0000.0000.0000.0090.0000.0090.04172162222
10-10 23:00C20.460.0310.0000.0310.0310.0140.0000.0140.10181172323
Total0.0000.1860.2250.1280.0000.1280.84

Totals from the start of the issue hour, each 15-minute step included at its end; inches of water. Expected (p × the amount if wet) is the forecast total. Its areas split it into likely, from hours with p ≥ 0.5, and phantom, from hours with p < 0.5. Called is each hour as wet, max(amount if wet, 0.01) in, when p is at or above the cut-off, or dry, 0: what an hourly view shows. Its sum is not a total forecast: it counts each called hour as certain and the rest as 0, and in a storm of confident hours it runs above expected. The lower chart has each hour on its own: called at 0.5 against expected, and in replays the gauge. The gauge counts only the hours the forecast has. HRRR: the 10 newest runs in hand, oldest lightest; torchlight's weights are RTP 0.929558, albion 1.061006, castle 0.974476, superior 1.078902, summed and divided by 4. Each MOS hour is split into 15 minutes as the newest HRRR cycle in hand splits it, evenly without one. In a replay or with a source late, a datum counts only if it would have arrived by then: HRRR f(h) 52 + 2 (h − 1) minutes after the cycle, the gauge 10 minutes after the hour, GFS and GEFS 6 hours and AIFS single 7 hours after the run. Built in 0.75 s.