Alta Collins precipitation, MOS round 3

Issued Fri 2026-10-16 03:00 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 10-18 12:00 MDT (at least 0.05 in; current sources and cut-offs kept)

In hand: Gauge through 10-16 02:00 MDT · HRRR 1016 08Z, f01–f05 · GFS 1016 00Z · GEFS 1016 00Z · AIFS single 1016 00Z

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
10-16 04:00C20.000.0220.0000.0000.0000.0000.0000.0000.0021721010
10-16 05:00C20.000.0220.0000.0000.0000.0000.0000.0000.0031631111
10-16 06:00C20.000.0220.0000.0000.0000.0000.0000.0000.0041541212
10-16 07:00C20.000.0220.0000.0000.0000.0000.0000.000–51451313
10-16 08:00C20.000.0220.0000.0000.0000.0000.0000.000–71261414
10-16 09:00C20.000.0220.0000.0000.0000.0000.0000.000–81171515
10-16 10:00C20.000.0220.0000.0000.0000.0000.0000.000–91081616
10-16 11:00C20.000.0220.0000.0000.0000.0000.0000.000–10991717
10-16 12:00C20.000.0220.0000.0000.0000.0000.0000.000–118101818
10-16 13:00C20.000.0220.0000.0000.0000.0000.0000.000–127111919
10-16 14:00C20.000.0220.0000.0000.0000.0000.0000.000–136122020
10-16 15:00C20.000.0220.0000.0000.0000.0000.0000.000–145132121
10-16 16:00C20.000.0220.0000.0000.0000.0000.0000.000–154142222
10-16 17:00C20.000.0220.0000.0000.0000.0000.0000.000–163152323
10-16 18:00C20.000.0220.0000.0000.0000.0000.0000.000–172162424
10-16 19:00C20.000.0220.0000.0000.0000.0000.0000.000–181172525
Total0.0000.0000.0000.0000.0000.0000.00

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 0.85 s.