⛳ Cold Ashby – Course Closure Forecast

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

Generated: 2026-03-02T18:52:27 | Model trained on 122 labelled days

Forecast Days
16
Predicted Open
0
Predicted Partial
0
Predicted Closed
16
Avg Closure Risk
82%
Best Day
2026-03-08
Train Accuracy
100%
Train κ
1.00
📅 Daily Forecast
Monday 2026-03-02
🔴 CLOSED
Closure: 100% Very High CLOSED
🌡️ 8–15°C 🌧️ 0.0mm 💨 25km/h ☁️ 54%
💧 Balance: 40mm 📊 Sat: 89% 🔄 Net 7d: +18.1mm
Playability: 30/100 Grim
Tuesday 2026-03-03
🔶 CLOSED
Closure: 76% High CLOSED
🌡️ 5–9°C 🌧️ 0.2mm 💨 17km/h ☁️ 75%
💧 Balance: 38mm 📊 Sat: 85% 🔄 Net 7d: +18.2mm
Playability: 37/100 Grim
Wednesday 2026-03-04
🔶 CLOSED
Closure: 73% High CLOSED
🌡️ 4–12°C 🌧️ 0.0mm 💨 16km/h ☁️ 64%
💧 Balance: 36mm 📊 Sat: 80% 🔄 Net 7d: +18.4mm
Playability: 49/100 Playable
Thursday 2026-03-05
🔶 CLOSED
Closure: 74% High CLOSED
🌡️ 6–14°C 🌧️ 1.8mm 💨 19km/h ☁️ 30%
💧 Balance: 36mm 📊 Sat: 79% 🔄 Net 7d: +14.6mm
Playability: 44/100 Playable
Friday 2026-03-06
🔶 CLOSED
Closure: 73% High CLOSED
🌡️ 4–9°C 🌧️ 0.9mm 💨 24km/h ☁️ 93%
💧 Balance: 35mm 📊 Sat: 78% 🔄 Net 7d: +3.4mm
Playability: 49/100 Playable
Saturday 2026-03-07
🔶 CLOSED
Closure: 72% High CLOSED
🌡️ 1–9°C 🌧️ 0.0mm 💨 19km/h ☁️ 53%
💧 Balance: 33mm 📊 Sat: 74% 🔄 Net 7d: -4.4mm
Playability: 50/100 Playable
Sunday 2026-03-08
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 3–8°C 🌧️ 0.0mm 💨 16km/h ☁️ 73%
💧 Balance: 31mm 📊 Sat: 70% 🔄 Net 7d: -4.4mm
Playability: 56/100 Playable
Monday 2026-03-09
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 3–8°C 🌧️ 2.4mm 💨 19km/h ☁️ 64%
💧 Balance: 32mm 📊 Sat: 72% 🔄 Net 7d: -1.0mm
Playability: 41/100 Playable
Tuesday 2026-03-10
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 2–10°C 🌧️ 0.6mm 💨 25km/h ☁️ 41%
💧 Balance: 31mm 📊 Sat: 68% 🔄 Net 7d: -0.9mm
Playability: 46/100 Playable
Wednesday 2026-03-11
🔶 CLOSED
Closure: 79% High CLOSED
🌡️ 3–10°C 🌧️ 6.3mm 💨 19km/h ☁️ 97%
💧 Balance: 35mm 📊 Sat: 79% 🔄 Net 7d: +5.6mm
Playability: 26/100 Grim
Thursday 2026-03-12
🔴 CLOSED
Closure: 87% Very High CLOSED
🌡️ 7–11°C 🌧️ 2.7mm 💨 19km/h ☁️ 96%
💧 Balance: 36mm 📊 Sat: 81% 🔄 Net 7d: +7.2mm
Playability: 37/100 Grim
Friday 2026-03-13
🔴 CLOSED
Closure: 86% Very High CLOSED
🌡️ 8–12°C 🌧️ 0.6mm 💨 34km/h ☁️ 100%
💧 Balance: 35mm 📊 Sat: 77% 🔄 Net 7d: +6.0mm
Playability: 37/100 Grim
Saturday 2026-03-14
🔴 CLOSED
Closure: 97% Very High CLOSED
🌡️ 4–8°C 🌧️ 13.7mm 💨 34km/h ☁️ 59%
💧 Balance: 45mm 📊 Sat: 100% 🔄 Net 7d: +19.2mm
Playability: 0/100 Overstone with Tez
Sunday 2026-03-15
🔴 CLOSED
Closure: 93% Very High CLOSED
🌡️ 4–8°C 🌧️ 1.8mm 💨 37km/h ☁️ 92%
💧 Balance: 44mm 📊 Sat: 98% 🔄 Net 7d: +20.4mm
Playability: 0/100 Overstone with Tez
Monday 2026-03-16
🔴 CLOSED
Closure: 100% Very High CLOSED
🌡️ 5–9°C 🌧️ 5.2mm 💨 34km/h ☁️ 71%
💧 Balance: 45mm 📊 Sat: 100% 🔄 Net 7d: +22.0mm
Playability: 0/100 Overstone with Tez
Tuesday 2026-03-17
🔴 CLOSED
Closure: 94% Very High CLOSED
🌡️ 4–7°C 🌧️ 0.9mm 💨 36km/h ☁️ 63%
💧 Balance: 44mm 📊 Sat: 97% 🔄 Net 7d: +22.6mm
Playability: 0/100 Overstone with Tez
🔬 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
0.8251
Precip Max 3D
0.0867
Soil Moisture 28 To 100Cm Mean
0.0526
Day Of Year
0.0263
Soil Moisture 7 To 28Cm Mean
0.0249
Month
0.0204
Precip Sum 28D
0.0178
Daylight Hours
0.0131
Precip Sum 14D
0.0124
Soil Moisture 28 To 100Cm Mean 7D Avg
0.0088

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 0.979

Cross-validation: 5-fold TimeSeriesSplit — R² -2.295 ± 0.406 (limited by seasonal data — improves with more winters)

Thresholds: OPEN < 0.40 | PARTIAL | 0.60 < 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.