⛳ Cold Ashby – Course Closure Forecast

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

Generated: 2026-02-25T19:09:01 | Model trained on 117 labelled days

Forecast Days
16
Predicted Open
0
Predicted Partial
16
Predicted Closed
0
Avg Closure Risk
47%
Best Day
2026-03-07
Train Accuracy
100%
Train κ
1.00
📅 Daily Forecast
Wednesday 2026-02-25
⚠️ PARTIAL
Closure: 50% Moderate PARTIAL
🌡️ 9–14°C 🌧️ 0.0mm 💨 17km/h ☁️ 89%
💧 Balance: 39mm 📊 Sat: 86% 🔄 Net 7d: +4.6mm
Playability: 55/100 Playable
Thursday 2026-02-26
⚠️ PARTIAL
Closure: 52% Moderate PARTIAL
🌡️ 9–12°C 🌧️ 3.9mm 💨 24km/h ☁️ 92%
💧 Balance: 41mm 📊 Sat: 91% 🔄 Net 7d: +2.9mm
Playability: 45/100 Playable
Friday 2026-02-27
⚠️ PARTIAL
Closure: 49% Moderate PARTIAL
🌡️ 7–12°C 🌧️ 5.1mm 💨 18km/h ☁️ 99%
💧 Balance: 44mm 📊 Sat: 99% 🔄 Net 7d: +6.9mm
Playability: 26/100 Grim
Saturday 2026-02-28
⚠️ PARTIAL
Closure: 49% Moderate PARTIAL
🌡️ 4–8°C 🌧️ 8.7mm 💨 13km/h ☁️ 75%
💧 Balance: 45mm 📊 Sat: 100% 🔄 Net 7d: +14.2mm
Playability: 21/100 Grim
Sunday 2026-03-01
⚠️ PARTIAL
Closure: 49% Moderate PARTIAL
🌡️ 4–10°C 🌧️ 1.5mm 💨 22km/h ☁️ 94%
💧 Balance: 45mm 📊 Sat: 99% 🔄 Net 7d: +15.1mm
Playability: 31/100 Grim
Monday 2026-03-02
⚠️ PARTIAL
Closure: 49% Moderate PARTIAL
🌡️ 4–13°C 🌧️ 0.0mm 💨 18km/h ☁️ 70%
💧 Balance: 42mm 📊 Sat: 94% 🔄 Net 7d: +13.0mm
Playability: 56/100 Playable
Tuesday 2026-03-03
⚠️ PARTIAL
Closure: 47% Moderate PARTIAL
🌡️ 6–12°C 🌧️ 4.9mm 💨 14km/h ☁️ 93%
💧 Balance: 45mm 📊 Sat: 100% 🔄 Net 7d: +18.1mm
Playability: 37/100 Grim
Wednesday 2026-03-04
⚠️ PARTIAL
Closure: 47% Moderate PARTIAL
🌡️ 3–9°C 🌧️ 0.2mm 💨 14km/h ☁️ 50%
💧 Balance: 43mm 📊 Sat: 95% 🔄 Net 7d: +18.3mm
Playability: 42/100 Playable
Thursday 2026-03-05
⚠️ PARTIAL
Closure: 51% Moderate PARTIAL
🌡️ 5–12°C 🌧️ 0.0mm 💨 29km/h ☁️ 43%
💧 Balance: 40mm 📊 Sat: 89% 🔄 Net 7d: +13.9mm
Playability: 40/100 Playable
Friday 2026-03-06
⚠️ PARTIAL
Closure: 46% Moderate PARTIAL
🌡️ 2–8°C 🌧️ 1.2mm 💨 22km/h ☁️ 72%
💧 Balance: 39mm 📊 Sat: 88% 🔄 Net 7d: +9.7mm
Playability: 43/100 Playable
Saturday 2026-03-07
⚠️ PARTIAL
Closure: 43% Moderate PARTIAL
🌡️ 1–9°C 🌧️ 0.0mm 💨 13km/h ☁️ 32%
💧 Balance: 37mm 📊 Sat: 82% 🔄 Net 7d: +0.3mm
Playability: 54/100 Playable
Sunday 2026-03-08
⚠️ PARTIAL
Closure: 43% Moderate PARTIAL
🌡️ 1–10°C 🌧️ 0.0mm 💨 16km/h ☁️ 60%
💧 Balance: 34mm 📊 Sat: 77% 🔄 Net 7d: -2.0mm
Playability: 54/100 Playable
Monday 2026-03-09
⚠️ PARTIAL
Closure: 43% Moderate PARTIAL
🌡️ 0–8°C 🌧️ 0.0mm 💨 21km/h ☁️ 43%
💧 Balance: 32mm 📊 Sat: 72% 🔄 Net 7d: -2.1mm
Playability: 54/100 Playable
Tuesday 2026-03-10
⚠️ PARTIAL
Closure: 43% Moderate PARTIAL
🌡️ -3–5°C 🌧️ 0.0mm 💨 24km/h ☁️ 43%
💧 Balance: 31mm 📊 Sat: 68% 🔄 Net 7d: -7.2mm
Playability: 44/100 Playable
Wednesday 2026-03-11
⚠️ PARTIAL
Closure: 44% Moderate PARTIAL
🌡️ -3–6°C 🌧️ 0.0mm 💨 27km/h ☁️ 29%
💧 Balance: 29mm 📊 Sat: 64% 🔄 Net 7d: -7.6mm
Playability: 34/100 Grim
Thursday 2026-03-12
⚠️ PARTIAL
Closure: 43% Moderate PARTIAL
🌡️ -1–4°C 🌧️ 0.2mm 💨 37km/h ☁️ 54%
💧 Balance: 27mm 📊 Sat: 60% 🔄 Net 7d: -7.6mm
Playability: 19/100 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
0.5491
Precip Max 3D
0.1067
Soil Moisture 28 To 100Cm Mean
0.0578
Soil Moisture 7 To 28Cm Mean 7D Avg
0.0368
Day Of Year
0.0272
Soil Moisture 28 To 100Cm Mean 7D Avg
0.0260
Precip Max 5D
0.0183
Month
0.0183
Precip Sum 28D
0.0182
Net Moisture 14D
0.0147

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

Training data: 117 days (26 closed, 8 partial, 83 open)

Training fit: Accuracy 100% | κ 1.000 | R² 0.982

Cross-validation: 5-fold TimeSeriesSplit — R² -2.751 ± 1.381 (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.