⛳ Cold Ashby – Course Closure Forecast

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

Generated: 2026-03-02T07:01:02 | Model trained on 122 labelled days

Forecast Days
16
Predicted Open
0
Predicted Partial
0
Predicted Closed
16
Avg Closure Risk
72%
Best Day
2026-03-16
Train Accuracy
100%
Train κ
1.00
📅 Daily Forecast
Monday 2026-03-02
🔴 CLOSED
Closure: 100% Very High CLOSED
🌡️ 8–14°C 🌧️ 0.0mm 💨 25km/h ☁️ 59%
💧 Balance: 40mm 📊 Sat: 89% 🔄 Net 7d: +18.1mm
Playability: 30/100 Grim
Tuesday 2026-03-03
🔴 CLOSED
Closure: 86% Very High CLOSED
🌡️ 4–10°C 🌧️ 0.0mm 💨 14km/h ☁️ 37%
💧 Balance: 38mm 📊 Sat: 84% 🔄 Net 7d: +17.6mm
Playability: 42/100 Playable
Wednesday 2026-03-04
🔶 CLOSED
Closure: 78% High CLOSED
🌡️ 5–12°C 🌧️ 0.0mm 💨 13km/h ☁️ 80%
💧 Balance: 35mm 📊 Sat: 79% 🔄 Net 7d: +17.6mm
Playability: 51/100 Playable
Thursday 2026-03-05
🔶 CLOSED
Closure: 78% High CLOSED
🌡️ 5–12°C 🌧️ 3.6mm 💨 23km/h ☁️ 77%
💧 Balance: 36mm 📊 Sat: 81% 🔄 Net 7d: +15.5mm
Playability: 37/100 Grim
Friday 2026-03-06
🔶 CLOSED
Closure: 77% High CLOSED
🌡️ 2–8°C 🌧️ 0.0mm 💨 22km/h ☁️ 60%
💧 Balance: 35mm 📊 Sat: 78% 🔄 Net 7d: +3.3mm
Playability: 47/100 Playable
Saturday 2026-03-07
🔶 CLOSED
Closure: 78% High CLOSED
🌡️ -1–8°C 🌧️ 0.0mm 💨 13km/h ☁️ 8%
💧 Balance: 33mm 📊 Sat: 74% 🔄 Net 7d: -4.6mm
Playability: 37/100 Grim
Sunday 2026-03-08
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 1–11°C 🌧️ 0.0mm 💨 16km/h ☁️ 67%
💧 Balance: 32mm 📊 Sat: 70% 🔄 Net 7d: -4.8mm
Playability: 56/100 Playable
Monday 2026-03-09
🔶 CLOSED
Closure: 69% High CLOSED
🌡️ 6–12°C 🌧️ 0.0mm 💨 15km/h ☁️ 89%
💧 Balance: 30mm 📊 Sat: 66% 🔄 Net 7d: -4.1mm
Playability: 61/100 Good
Tuesday 2026-03-10
🔶 CLOSED
Closure: 68% High CLOSED
🌡️ 7–11°C 🌧️ 3.8mm 💨 12km/h ☁️ 99%
💧 Balance: 32mm 📊 Sat: 71% 🔄 Net 7d: +0.2mm
Playability: 46/100 Playable
Wednesday 2026-03-11
🔶 CLOSED
Closure: 68% High CLOSED
🌡️ 5–11°C 🌧️ 0.4mm 💨 13km/h ☁️ 66%
💧 Balance: 30mm 📊 Sat: 67% 🔄 Net 7d: +0.5mm
Playability: 56/100 Playable
Thursday 2026-03-12
🔶 CLOSED
Closure: 68% High CLOSED
🌡️ 2–11°C 🌧️ 0.6mm 💨 9km/h ☁️ 48%
💧 Balance: 28mm 📊 Sat: 63% 🔄 Net 7d: -2.3mm
Playability: 56/100 Playable
Friday 2026-03-13
🔶 CLOSED
Closure: 65% High CLOSED
🌡️ 5–10°C 🌧️ 0.0mm 💨 13km/h ☁️ 88%
💧 Balance: 27mm 📊 Sat: 59% 🔄 Net 7d: -2.9mm
Playability: 58/100 Playable
Saturday 2026-03-14
🔶 CLOSED
Closure: 65% High CLOSED
🌡️ 2–11°C 🌧️ 0.0mm 💨 7km/h ☁️ 48%
💧 Balance: 24mm 📊 Sat: 54% 🔄 Net 7d: -3.2mm
Playability: 58/100 Playable
Sunday 2026-03-15
🔶 CLOSED
Closure: 64% High CLOSED
🌡️ 2–12°C 🌧️ 0.0mm 💨 8km/h ☁️ 53%
💧 Balance: 22mm 📊 Sat: 49% 🔄 Net 7d: -4.0mm
Playability: 63/100 Good
Monday 2026-03-16
🔶 CLOSED
Closure: 63% High CLOSED
🌡️ 3–15°C 🌧️ 0.1mm 💨 26km/h ☁️ 30%
💧 Balance: 20mm 📊 Sat: 44% 🔄 Net 7d: -4.7mm
Playability: 59/100 Playable
Tuesday 2026-03-17
🔶 CLOSED
Closure: 65% High CLOSED
🌡️ 2–6°C 🌧️ 2.8mm 💨 36km/h ☁️ 97%
💧 Balance: 22mm 📊 Sat: 48% 🔄 Net 7d: -5.3mm
Playability: 18/100 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
0.6744
Precip Max 3D
0.0803
Soil Moisture 28 To 100Cm Mean
0.0454
Soil Moisture 28 To 100Cm Mean 7D Avg
0.0378
Day Of Year
0.0284
Daylight Hours
0.0271
Soil Moisture 7 To 28Cm Mean 7D Avg
0.0222
Precip Sum 28D
0.0217
Month
0.0210
Precip Max 5D
0.0180

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 -2.312 ± 0.394 (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.