⛳ Cold Ashby – Course Closure Forecast

Predictive model based on soil moisture dynamics, rainfall accumulation & seasonal drainage

Generated: 2026-03-03T06:55:26 | Model trained on 122 labelled days

Forecast Days
16
Predicted Open
0
Predicted Partial
0
Predicted Closed
16
Avg Closure Risk
71%
Best Day
2026-03-16
Train Accuracy
100%
Train κ
1.00
📅 Daily Forecast
Tuesday 2026-03-03
🔴 CLOSED
Closure: 87% Very High CLOSED
🌡️ 6–10°C 🌧️ 0.1mm 💨 14km/h ☁️ 89%
💧 Balance: 38mm 📊 Sat: 85% 🔄 Net 7d: +18.2mm
Playability: 32/100 Grim
Wednesday 2026-03-04
🔶 CLOSED
Closure: 78% High CLOSED
🌡️ 4–12°C 🌧️ 0.0mm 💨 12km/h ☁️ 33%
💧 Balance: 36mm 📊 Sat: 80% 🔄 Net 7d: +18.3mm
Playability: 46/100 Playable
Thursday 2026-03-05
🔶 CLOSED
Closure: 78% High CLOSED
🌡️ 5–15°C 🌧️ 0.0mm 💨 17km/h ☁️ 12%
💧 Balance: 34mm 📊 Sat: 75% 🔄 Net 7d: +12.6mm
Playability: 52/100 Playable
Friday 2026-03-06
🔶 CLOSED
Closure: 78% High CLOSED
🌡️ 6–10°C 🌧️ 1.8mm 💨 16km/h ☁️ 88%
💧 Balance: 34mm 📊 Sat: 76% 🔄 Net 7d: +2.4mm
Playability: 37/100 Grim
Saturday 2026-03-07
🔶 CLOSED
Closure: 78% High CLOSED
🌡️ 5–8°C 🌧️ 1.8mm 💨 14km/h ☁️ 99%
💧 Balance: 34mm 📊 Sat: 76% 🔄 Net 7d: -3.2mm
Playability: 36/100 Grim
Sunday 2026-03-08
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 5–8°C 🌧️ 0.0mm 💨 12km/h ☁️ 99%
💧 Balance: 33mm 📊 Sat: 72% 🔄 Net 7d: -3.3mm
Playability: 51/100 Playable
Monday 2026-03-09
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 4–12°C 🌧️ 0.0mm 💨 18km/h ☁️ 56%
💧 Balance: 31mm 📊 Sat: 68% 🔄 Net 7d: -2.5mm
Playability: 56/100 Playable
Tuesday 2026-03-10
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 4–11°C 🌧️ 0.0mm 💨 20km/h ☁️ 49%
💧 Balance: 29mm 📊 Sat: 65% 🔄 Net 7d: -2.7mm
Playability: 56/100 Playable
Wednesday 2026-03-11
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 5–11°C 🌧️ 3.0mm 💨 20km/h ☁️ 67%
💧 Balance: 30mm 📊 Sat: 67% 🔄 Net 7d: +0.4mm
Playability: 51/100 Playable
Thursday 2026-03-12
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 3–10°C 🌧️ 0.5mm 💨 22km/h ☁️ 69%
💧 Balance: 29mm 📊 Sat: 64% 🔄 Net 7d: +1.4mm
Playability: 56/100 Playable
Friday 2026-03-13
🔶 CLOSED
Closure: 70% High CLOSED
🌡️ 9–13°C 🌧️ 1.9mm 💨 32km/h ☁️ 96%
💧 Balance: 29mm 📊 Sat: 64% 🔄 Net 7d: +0.8mm
Playability: 40/100 Playable
Saturday 2026-03-14
🔶 CLOSED
Closure: 66% High CLOSED
🌡️ 9–14°C 🌧️ 0.0mm 💨 32km/h ☁️ 98%
💧 Balance: 27mm 📊 Sat: 59% 🔄 Net 7d: -1.9mm
Playability: 53/100 Playable
Sunday 2026-03-15
🔶 CLOSED
Closure: 66% High CLOSED
🌡️ 7–11°C 🌧️ 0.0mm 💨 16km/h ☁️ 94%
💧 Balance: 24mm 📊 Sat: 54% 🔄 Net 7d: -2.6mm
Playability: 63/100 Good
Monday 2026-03-16
🔶 CLOSED
Closure: 65% High CLOSED
🌡️ 4–9°C 🌧️ 1.8mm 💨 16km/h ☁️ 79%
💧 Balance: 24mm 📊 Sat: 54% 🔄 Net 7d: -1.2mm
Playability: 48/100 Playable
Tuesday 2026-03-17
🔶 CLOSED
Closure: 65% High CLOSED
🌡️ 2–11°C 🌧️ 3.0mm 💨 25km/h ☁️ 73%
💧 Balance: 25mm 📊 Sat: 55% 🔄 Net 7d: +0.7mm
Playability: 48/100 Playable
Wednesday 2026-03-18
🔶 CLOSED
Closure: 65% High CLOSED
🌡️ 6–12°C 🌧️ 0.2mm 💨 12km/h ☁️ 89%
💧 Balance: 24mm 📊 Sat: 52% 🔄 Net 7d: -1.6mm
Playability: 63/100 Good
🔬 What Drives Course Closure

Feature importance from the trained model — these are the weather/soil factors most predictive of Cold Ashby closing.

Closure Score Lag1
0.6736
Precip Max 3D
0.0802
Soil Moisture 28 To 100Cm Mean
0.0427
Soil Moisture 28 To 100Cm Mean 7D Avg
0.0375
Daylight Hours
0.0284
Day Of Year
0.0280
Soil Moisture 7 To 28Cm Mean 7D Avg
0.0224
Precip Sum 28D
0.0223
Month
0.0209
Precip Max 5D
0.0183

Model: Histogram Gradient Boosted Regressor (ordinal: open → partial → closed)

Training data: 122 days (29 closed, 10 partial, 83 open)

Training fit: Accuracy 100% | κ 1.000 | R² 0.980

Cross-validation: 5-fold TimeSeriesSplit — R² -2.003 ± 0.111 (limited by seasonal data — improves with more winters)

Thresholds: OPEN < 0.40 | PARTIAL | 0.55 < CLOSED (auto-optimised)

Features: 25 selected from 71 candidates

Soil model: Clay bucket model (field capacity 45.0mm, drainage rate 0.03/day)

Note: Predictions improve significantly with more labelled closure data. Target: 60+ days for robust estimates.