⛳ Cold Ashby – Course Closure Forecast

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

Generated: 2026-04-27T08:20:17 | Model trained on 178 labelled days

Forecast Days
16
Predicted Open
16
Predicted Partial
0
Predicted Closed
0
Avg Closure Risk
0%
Best Day
2026-04-27
Train Accuracy
99%
Train κ
0.99
📅 Daily Forecast
Monday 2026-04-27
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 6–18°C 🌧️ 5.0mm 💨 22km/h ☁️ 59%
💧 Balance: 1mm 📊 Sat: 2% 🔄 Net 7d: -17.8mm
Playability: 90/100 Excellent
Tuesday 2026-04-28
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 6–13°C 🌧️ 0.7mm 💨 26km/h ☁️ 64%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -16.4mm
Playability: 90/100 Excellent
Wednesday 2026-04-29
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 5–16°C 🌧️ 0.0mm 💨 32km/h ☁️ 3%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -17.0mm
Playability: 90/100 Excellent
Thursday 2026-04-30
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 6–17°C 🌧️ 0.0mm 💨 28km/h ☁️ 0%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -18.2mm
Playability: 90/100 Excellent
Friday 2026-05-01
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 5–19°C 🌧️ 0.6mm 💨 17km/h ☁️ 17%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -17.9mm
Playability: 100/100 Excellent
Saturday 2026-05-02
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 2–19°C 🌧️ 1.8mm 💨 10km/h ☁️ 97%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -15.1mm
Playability: 90/100 Excellent
Sunday 2026-05-03
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 8–17°C 🌧️ 0.0mm 💨 12km/h ☁️ 35%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -14.3mm
Playability: 100/100 Excellent
Monday 2026-05-04
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 9–16°C 🌧️ 0.6mm 💨 12km/h ☁️ 54%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -18.3mm
Playability: 100/100 Excellent
Tuesday 2026-05-05
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 6–14°C 🌧️ 0.0mm 💨 18km/h ☁️ 29%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -19.7mm
Playability: 100/100 Excellent
Wednesday 2026-05-06
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 5–16°C 🌧️ 0.0mm 💨 13km/h ☁️ 24%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -19.0mm
Playability: 100/100 Excellent
Thursday 2026-05-07
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 6–14°C 🌧️ 0.0mm 💨 19km/h ☁️ 48%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -17.5mm
Playability: 100/100 Excellent
Friday 2026-05-08
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 7–10°C 🌧️ 0.0mm 💨 26km/h ☁️ 99%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -16.6mm
Playability: 90/100 Excellent
Saturday 2026-05-09
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 6–11°C 🌧️ 0.0mm 💨 26km/h ☁️ 33%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -18.8mm
Playability: 85/100 Excellent
Sunday 2026-05-10
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 4–14°C 🌧️ 0.0mm 💨 23km/h ☁️ 22%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -19.9mm
Playability: 100/100 Excellent
Monday 2026-05-11
✅ OPEN
Closure: 0% Very Low OPEN
🌡️ 4–15°C 🌧️ 0.1mm 💨 22km/h ☁️ 19%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -21.5mm
Playability: 100/100 Excellent
Tuesday 2026-05-12
✅ OPEN
Closure: 1% Very Low OPEN
🌡️ 7–12°C 🌧️ 1.6mm 💨 19km/h ☁️ 90%
💧 Balance: 0mm 📊 Sat: 0% 🔄 Net 7d: -17.8mm
Playability: 90/100 Excellent
🔬 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
0.2939
Day Of Year
0.2238
Precip Max 5D
0.0545
Soil Moisture 0 To 7Cm Mean 7D Avg
0.0479
Soil Moisture 28 To 100Cm Mean
0.0394
Precip Sum 28D
0.0346
Daylight Hours
0.0131
Rain Days 28D
0.0126
Rain X Clay Sat
0.0094
Precip Sum 14D
0.0082

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

Training data: 178 days (30 closed, 12 partial, 136 open)

Training fit: Accuracy 99% | κ 0.988 | R² 0.973

Cross-validation: 5-fold TimeSeriesSplit — R² -2.288 ± 3.657 (limited by seasonal data — improves with more winters)

Thresholds: OPEN < 0.35 | PARTIAL | 0.55 < CLOSED (auto-optimised)

Features: 25 selected from 72 candidates

Soil model: Clay bucket model (field capacity 45.0mm, drainage rate 0.02/day)

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