⛳ Cold Ashby – Course Closure Forecast

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

Generated: 2026-03-01T18:36:28 | Model trained on 121 labelled days

Forecast Days
16
Predicted Open
2
Predicted Partial
8
Predicted Closed
6
Avg Closure Risk
54%
Best Day
2026-03-15
Train Accuracy
100%
Train κ
1.00
📅 Daily Forecast
Sunday 2026-03-01
🔴 CLOSED
Closure: 100% Very High CLOSED
🌡️ 3–12°C 🌧️ 0.2mm 💨 25km/h ☁️ 97%
💧 Balance: 43mm 📊 Sat: 96% 🔄 Net 7d: +20.8mm
Playability: 10/100 Overstone with Tez
Monday 2026-03-02
🔶 CLOSED
Closure: 79% High CLOSED
🌡️ 7–14°C 🌧️ 0.0mm 💨 25km/h ☁️ 39%
💧 Balance: 41mm 📊 Sat: 90% 🔄 Net 7d: +18.5mm
Playability: 31/100 Grim
Tuesday 2026-03-03
🔶 CLOSED
Closure: 76% High CLOSED
🌡️ 5–11°C 🌧️ 0.0mm 💨 11km/h ☁️ 84%
💧 Balance: 38mm 📊 Sat: 85% 🔄 Net 7d: +18.1mm
Playability: 52/100 Playable
Wednesday 2026-03-04
🔶 CLOSED
Closure: 71% High CLOSED
🌡️ 4–10°C 🌧️ 0.0mm 💨 13km/h ☁️ 92%
💧 Balance: 36mm 📊 Sat: 80% 🔄 Net 7d: +18.1mm
Playability: 50/100 Playable
Thursday 2026-03-05
🔶 CLOSED
Closure: 70% High CLOSED
🌡️ 4–13°C 🌧️ 3.0mm 💨 22km/h ☁️ 62%
💧 Balance: 36mm 📊 Sat: 81% 🔄 Net 7d: +15.4mm
Playability: 41/100 Playable
Friday 2026-03-06
⚠️ CLOSED
Closure: 56% Moderate CLOSED
🌡️ 2–8°C 🌧️ 0.0mm 💨 18km/h ☁️ 47%
💧 Balance: 35mm 📊 Sat: 77% 🔄 Net 7d: +3.1mm
Playability: 47/100 Playable
Saturday 2026-03-07
⚠️ PARTIAL
Closure: 53% Moderate PARTIAL
🌡️ 0–10°C 🌧️ 0.0mm 💨 14km/h ☁️ 1%
💧 Balance: 32mm 📊 Sat: 72% 🔄 Net 7d: -5.2mm
Playability: 59/100 Playable
Sunday 2026-03-08
⚠️ PARTIAL
Closure: 48% Moderate PARTIAL
🌡️ 1–10°C 🌧️ 0.0mm 💨 15km/h ☁️ 50%
💧 Balance: 30mm 📊 Sat: 68% 🔄 Net 7d: -5.8mm
Playability: 66/100 Good
Monday 2026-03-09
⚠️ PARTIAL
Closure: 48% Moderate PARTIAL
🌡️ 5–9°C 🌧️ 0.0mm 💨 12km/h ☁️ 37%
💧 Balance: 28mm 📊 Sat: 63% 🔄 Net 7d: -5.5mm
Playability: 67/100 Good
Tuesday 2026-03-10
⚠️ PARTIAL
Closure: 48% Moderate PARTIAL
🌡️ 4–10°C 🌧️ 0.0mm 💨 10km/h ☁️ 52%
💧 Balance: 26mm 📊 Sat: 58% 🔄 Net 7d: -5.5mm
Playability: 67/100 Good
Wednesday 2026-03-11
⚠️ PARTIAL
Closure: 48% Moderate PARTIAL
🌡️ 1–8°C 🌧️ 2.1mm 💨 11km/h ☁️ 81%
💧 Balance: 27mm 📊 Sat: 60% 🔄 Net 7d: -2.9mm
Playability: 47/100 Playable
Thursday 2026-03-12
⚠️ PARTIAL
Closure: 47% Moderate PARTIAL
🌡️ 2–9°C 🌧️ 7.5mm 💨 9km/h ☁️ 98%
💧 Balance: 33mm 📊 Sat: 74% 🔄 Net 7d: +2.7mm
Playability: 42/100 Playable
Friday 2026-03-13
⚠️ PARTIAL
Closure: 44% Moderate PARTIAL
🌡️ 0–10°C 🌧️ 0.6mm 💨 15km/h ☁️ 95%
💧 Balance: 32mm 📊 Sat: 71% 🔄 Net 7d: +2.9mm
Playability: 63/100 Good
Saturday 2026-03-14
⚠️ PARTIAL
Closure: 46% Moderate PARTIAL
🌡️ 5–7°C 🌧️ 1.2mm 💨 29km/h ☁️ 96%
💧 Balance: 32mm 📊 Sat: 71% 🔄 Net 7d: +5.3mm
Playability: 42/100 Playable
Sunday 2026-03-15
✅ OPEN
Closure: 16% Very Low OPEN
🌡️ 2–8°C 🌧️ 0.0mm 💨 31km/h ☁️ 94%
💧 Balance: 30mm 📊 Sat: 67% 🔄 Net 7d: +5.6mm
Playability: 72/100 Good
Monday 2026-03-16
✅ OPEN
Closure: 16% Very Low OPEN
🌡️ 3–11°C 🌧️ 3.1mm 💨 49km/h ☁️ 100%
💧 Balance: 32mm 📊 Sat: 71% 🔄 Net 7d: +9.3mm
Playability: 47/100 Playable
🔬 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
0.5111
Swb Avg 3D
0.0951
Precip Sum 28D
0.0886
Precip Max 5D
0.0559
Precip Sum 14D
0.0513
Month
0.0416
Soil Moisture 28 To 100Cm Mean 7D Avg
0.0301
Soil Moisture 7 To 28Cm Mean 7D Avg
0.0229
Soil Moisture 28 To 100Cm Mean
0.0212
Daylight Hours
0.0150

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

Training data: 121 days (28 closed, 10 partial, 83 open)

Training fit: Accuracy 100% | κ 1.000 | R² 0.989

Cross-validation: 5-fold TimeSeriesSplit — R² -1.675 ± 0.474 (limited by seasonal data — improves with more winters)

Thresholds: OPEN < 0.30 | 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.