Rule
Dawn Crystals
Podere Belvedere - Dawn Crystals - Tuscany
San Quirico d'Orcia, Tuscany, Italy
Morning dew drops or frost crystals on calm mornings
Currently
Real-time conditionsSoil Temperature5.7°C
Dew Point-0.4°C (low dew point)
Wind Speed1.1m/s (calm conditions)
Cloud Cover74%
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in Europe/Rome
Next opportunity
Dawn Crystals
Podere Belvedere
Tomorrow · 06:23–08:00 · 2h window
High confidence
87%
❄️Frost Probability30-32%
Create your own Dawn Crystals alerts
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72-hour requirements breakdown
What passed or failed, hour by hourOR logic: one branch per group is enough
Meets requirement
Misses requirement
Time Europe/Rome | Time Window Sunrise -45m to +90m | Frost Probability OR1·B1≥ 60.0% | Dewpoint Spread OR1·B2≤ 3.0°C | Relative Humidity OR1·B2≥ 85.0% | Wind Speed ≤ 1.5m/s |
|---|---|---|---|---|---|
| Sun, Feb 15 | |||||
| 02:00 | ✕ | 2.1% | 0.5°C | 97% | 1.4m/s |
| 03:00 | ✕ | 1.6% | 0.5°C | 97% | 1.9m/s |
| 04:00 | ✕ | 1.9% | 0.5°C | 96% | 2.1m/s |
| 05:00 | ✕ | 2.5% | 0.6°C | 96% | 1.7m/s |
| 06:00 | ✓ | 2.7% | 0.7°C | 95% | 1.8m/s |
| 07:00 | ✓ | 1.9% | 0.7°C | 95% | 2.3m/s |
| 08:00 | ✓ | 1.2% | 0.7°C | 95% | 2.5m/s |
| 09:00 | ✕ | 1.4% | 1.6°C | 90% | 3.2m/s |
| 10:00 | ✕ | 1.5% | 2.2°C | 86% | 4.9m/s |
| 11:00 | ✕ | 2% | 2.4°C | 85% | 6.5m/s |
| 12:00 | ✕ | 3.7% | 4.7°C | 72% | 7.6m/s |
| 13:00 | ✕ | 2.6% | 5.8°C | 68% | 7.5m/s |
| 14:00 | ✕ | 2.9% | 6.4°C | 64% | 6.7m/s |
| 15:00 | ✕ | 0% | 6.6°C | 64% | 6.1m/s |
| 16:00 | ✕ | 0% | 5.8°C | 67% | 5.1m/s |
| 17:00 | ✕ | 0% | 4.9°C | 71% | 4.3m/s |
| 18:00 | ✕ | 0% | 3.8°C | 77% | 2.8m/s |
| 19:00 | ✕ | 2.7% | 3.6°C | 77% | 2.5m/s |
| 20:00 | ✕ | 3.4% | 4.1°C | 75% | 1.5m/s |
| 21:00 | ✕ | 3.2% | 4.7°C | 72% | 1.8m/s |
| 22:00 | ✕ | 3.4% | 4.8°C | 71% | 1.4m/s |
| 23:00 | ✕ | 3.4% | 5°C | 71% | 1.4m/s |
| Mon, Feb 16 | |||||
| 24:00 | ✕ | 3.4% | 4.9°C | 71% | 0.85m/s |
| 01:00 | ✕ | 3.6% | 4.7°C | 71% | 0.2m/s |
| 02:00 | ✕ | 35% | 5.1°C | 69% | 0.85m/s |
| 03:00 | ✕ | 36% | 5.1°C | 69% | 1.1m/s |
| 04:00 | ✕ | 35% | 4.4°C | 73% | 0.9m/s |
| 05:00 | ✕ | 35% | 4.5°C | 72% | 1.3m/s |
| 06:00 | ✓ | 37% | 4.8°C | 71% | 0.55m/s |
| 07:00 | ✓ | 35% | 4.2°C | 74% | 1m/s |
| 08:00 | ✓ | 46% | 4.3°C | 74% | 1.4m/s |
| 09:00 | ✕ | 36% | 5.3°C | 69% | 0.98m/s |
| 10:00 | ✕ | 42% | 6.4°C | 65% | 1.7m/s |
| 11:00 | ✕ | 3.2% | 6.9°C | 62% | 3.4m/s |
| 12:00 | ✕ | 3% | 7.2°C | 61% | 5.2m/s |
| 13:00 | ✕ | 2.8% | 7.4°C | 61% | 5.8m/s |
| 14:00 | ✕ | 2.6% | 4.6°C | 73% | 6m/s |
| 15:00 | ✕ | 2.8% | 3.5°C | 79% | 4.7m/s |
| 16:00 | ✕ | 1.3% | 1.7°C | 89% | 5.6m/s |
| 17:00 | ✕ | 1.4% | 2.2°C | 86% | 8.9m/s |
| 18:00 | ✕ | 2.1% | 1.5°C | 90% | 3m/s |
| 19:00 | ✕ | 1.8% | 1°C | 94% | 1.6m/s |
| 20:00 | ✕ | 1.4% | 0.9°C | 94% | 1.5m/s |
| 21:00 | ✕ | 1.8% | 1.1°C | 93% | 1.3m/s |
| 22:00 | ✕ | 2.9% | 1°C | 94% | 1.3m/s |
| 23:00 | ✕ | 2.9% | 1°C | 94% | 1.3m/s |
| Tue, Feb 17 | |||||
| 24:00 | ✕ | 2.9% | 0.8°C | 95% | 1.4m/s |
| 01:00 | ✕ | 2.1% | 1°C | 94% | 1.2m/s |
| 02:00 | ✕ | 1.7% | 0.8°C | 94% | 0.29m/s |
| 03:00 | ✕ | 20% | 0.5°C | 97% | 1.8m/s |
| 04:00 | ✕ | 28% | 0.4°C | 97% | 0.42m/s |
| 05:00 | ✕ | 28% | 0.4°C | 97% | 0.78m/s |
| 06:00 | ✓ | 30% | 0.5°C | 97% | 0.84m/s |
| 07:00 | ✓ | 32% | 0.5°C | 96% | 0.73m/s |
| 08:00 | ✓ | 22% | 0.7°C | 95% | 1.7m/s |
| 09:00 | ✕ | 37% | 1.9°C | 88% | 1.7m/s |
| 10:00 | ✕ | 48% | 3.5°C | 78% | 1.8m/s |
| 11:00 | ✕ | 48% | 5.2°C | 70% | 1.9m/s |
| 12:00 | ✕ | 4.9% | 6.6°C | 63% | 1.8m/s |
| 13:00 | ✕ | 4.9% | 8.1°C | 57% | 2.3m/s |
| 14:00 | ✕ | 4.6% | 10°C | 51% | 2.6m/s |
| 15:00 | ✕ | 4.4% | 11°C | 47% | 2m/s |
| 16:00 | ✕ | 0% | 10°C | 50% | 1.6m/s |
| 17:00 | ✕ | 0% | 6.9°C | 62% | 0.71m/s |
| 18:00 | ✕ | 0% | 5.1°C | 70% | 0.96m/s |
| 19:00 | ✕ | 4.9% | 3.6°C | 77% | 1.1m/s |
| 20:00 | ✕ | 4.4% | 3.6°C | 77% | 0.9m/s |
| 21:00 | ✕ | 4.4% | 3.5°C | 78% | 1.3m/s |
| 22:00 | ✕ | 4.4% | 3.1°C | 80% | 1.5m/s |
| 23:00 | ✕ | 2.8% | 2.7°C | 83% | 1.6m/s |
| Wed, Feb 18 | |||||
| 24:00 | ✕ | 2.1% | 2.5°C | 84% | 1.5m/s |
| 01:00 | ✕ | 22% | 2.7°C | 82% | 1.7m/s |
| 02:00 | ✕ | 22% | 2.8°C | 82% | 1.5m/s |
| 03:00 | ✕ | 22% | 2.8°C | 82% | 1.5m/s |
| 04:00 | ✕ | 22% | 2.9°C | 81% | 1.1m/s |
| 05:00 | ✕ | 30% | 3.2°C | 80% | 1.3m/s |
| 06:00 | ✓ | 30% | 3.3°C | 79% | 1.3m/s |
| 07:00 | ✓ | 32% | 3.2°C | 80% | 0.61m/s |
| 08:00 | ✓ | 30% | 3.4°C | 79% | 1.1m/s |
| 09:00 | ✕ | 3.4% | 3.6°C | 78% | 1.5m/s |
| 10:00 | ✕ | 3.2% | 3.8°C | 77% | 1.9m/s |
| 11:00 | ✕ | 3.2% | 3.3°C | 80% | 1.9m/s |
| 12:00 | ✕ | 1.9% | 2.9°C | 82% | 1.9m/s |
| 13:00 | ✕ | 1.9% | 2.4°C | 84% | 1.8m/s |
| 14:00 | ✕ | 1.9% | 2.4°C | 84% | 1.9m/s |
| 15:00 | ✕ | 1.9% | 2.4°C | 85% | 2m/s |
| 16:00 | ✕ | 1.9% | 2.4°C | 85% | 2.1m/s |
| 17:00 | ✕ | 1.9% | 2°C | 87% | 2.3m/s |
| 18:00 | ✕ | 1.6% | 1.6°C | 90% | 2.4m/s |
| 19:00 | ✕ | 1.6% | 1.1°C | 92% | 2.5m/s |
| 20:00 | ✕ | 1.6% | 1.1°C | 93% | 2.8m/s |
| 21:00 | ✕ | 1.4% | 1°C | 93% | 3m/s |
| 22:00 | ✕ | 1% | 0.9°C | 94% | 3.2m/s |
| 23:00 | ✕ | 1.7% | 1.4°C | 91% | 3.7m/s |
| Thu, Feb 19 | |||||
| 24:00 | ✕ | 1.7% | 1.9°C | 88% | 4.2m/s |
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity). For OR groups, only one branch is required, so some OR-branch predicates can be ✕ even in a matching hour.
What does Frost Probability mean?
Inputs that drive the scoreThis derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.
| Time Europe/Rome | Frost Probability % | Dew Point °C | Dewpoint Spread °C | Relative Humidity % | Surface Temperature °C | Temperature °C | Time Window | Total Cloud Coverage % | Vapor Pressure Deficit kPa |
|---|---|---|---|---|---|---|---|---|---|
| Mon, Feb 16
Sunrise 07:10
Sunset 17:45 | |||||||||
| 03:00 ☾ | 36% | -0.4°C | 5.1°C | 69% | 5.7°C | 4.7°C | - | 74% | 0.26kPa |
| 04:00 ☾ | 35% | -0.2°C | 4.4°C | 73% | 5.5°C | 4.2°C | - | 100% | 0.22kPa |
| 05:00 ☾ | 35% | 0°C | 4.5°C | 72% | 5.4°C | 4.5°C | - | 100% | 0.23kPa |
| 06:00 ☾ | 37% | 0.3°C | 4.8°C | 71% | 5.3°C | 5.1°C | - | 100% | 0.25kPa |
| 07:00 ☾ | 35% | 0.4°C | 4.2°C | 74% | 5.1°C | 4.6°C | - | 96% | 0.22kPa |
| 08:00 | 46% | 1.6°C | 4.3°C | 74% | 5.1°C | 5.9°C | - | 23% | 0.24kPa |
| 09:00 | 36% | 2.7°C | 5.3°C | 69% | 5.3°C | 8°C | - | 74% | 0.33kPa |
| 10:00 | 42% | 3.2°C | 6.4°C | 65% | 5.8°C | 9.6°C | - | 34% | 0.42kPa |
| 11:00 | 3.2% | 3.9°C | 6.9°C | 62% | 6.3°C | 11°C | - | 100% | 0.49kPa |
| 12:00 | 3% | 3.5°C | 7.2°C | 61% | 6.8°C | 11°C | - | 100% | 0.5kPa |
| 13:00 | 2.8% | 3.5°C | 7.4°C | 60% | 7.1°C | 11°C | - | 100% | 0.51kPa |
| 14:00 | 2.6% | 4.2°C | 4.6°C | 73% | 7.2°C | 8.8°C | - | 100% | 0.31kPa |
| 15:00 | 2.8% | 5.2°C | 3.5°C | 79% | 7.4°C | 8.7°C | - | 100% | 0.24kPa |
| 16:00 | 1.3% | 6.7°C | 1.7°C | 89% | 7.5°C | 8.4°C | - | 100% | 0.12kPa |
| 17:00 | 1.4% | 6.8°C | 2.2°C | 86% | 7.5°C | 9°C | - | 70% | 0.16kPa |
| 18:00 ☾ | 2.1% | 6.5°C | 1.5°C | 90% | 7.5°C | 8°C | - | 34% | 0.1kPa |
| 19:00 ☾ | 1.8% | 5.9°C | 1°C | 94% | 7.4°C | 6.9°C | - | 45% | 0.06kPa |
| 20:00 ☾ | 1.4% | 5.8°C | 0.9°C | 94% | 7.2°C | 6.7°C | - | 91% | 0.05kPa |
| 21:00 ☾ | 1.8% | 6.2°C | 1.1°C | 93% | 7.2°C | 7.3°C | - | 85% | 0.07kPa |
| 22:00 ☾ | 2.9% | 5°C | 1°C | 94% | 7.1°C | 6°C | - | 2% | 0.06kPa |
| 23:00 ☾ | 2.9% | 4.4°C | 1°C | 94% | 6.8°C | 5.4°C | - | 3% | 0.06kPa |
| Tue, Feb 17
Sunrise 07:10
Sunset 17:45 | |||||||||
| 24:00 ☾ | 2.9% | 4.3°C | 0.8°C | 95% | 6.6°C | 5.1°C | - | 2% | 0.05kPa |
| 01:00 ☾ | 2.1% | 4.1°C | 1°C | 94% | 6.4°C | 5.1°C | - | 34% | 0.06kPa |
| 02:00 ☾ | 1.7% | 3.8°C | 0.8°C | 94% | 6.1°C | 4.6°C | - | 72% | 0.05kPa |
| 03:00 ☾ | 20% | 3.7°C | 0.5°C | 97% | 5.9°C | 4.2°C | - | 26% | 0.03kPa |
| 04:00 ☾ | 28% | 3.5°C | 0.4°C | 97% | 5.7°C | 3.9°C | - | 18% | 0.02kPa |
| 05:00 ☾ | 28% | 3.2°C | 0.4°C | 97% | 5.5°C | 3.6°C | - | 12% | 0.02kPa |
| 06:00 ☾ | 30% | 2.8°C | 0.5°C | 97% | 5.2°C | 3.3°C | - | 7% | 0.02kPa |
| 07:00 ☾ | 32% | 2.6°C | 0.5°C | 96% | 5°C | 3.1°C | - | 4% | 0.03kPa |
| 08:00 | 22% | 3.1°C | 0.7°C | 95% | 4.9°C | 3.8°C | - | 33% | 0.04kPa |
| 09:00 | 37% | 3.6°C | 1.9°C | 88% | 5°C | 5.5°C | - | 5% | 0.11kPa |
| 10:00 | 48% | 3.4°C | 3.5°C | 78% | 5.2°C | 6.9°C | - | 2% | 0.22kPa |
| 11:00 | 48% | 3.2°C | 5.2°C | 70% | 5.8°C | 8.4°C | - | 2% | 0.33kPa |
| 12:00 | 4.9% | 3.1°C | 6.6°C | 63% | 6.3°C | 9.7°C | - | 2% | 0.44kPa |
| 13:00 | 4.9% | 2.7°C | 8.1°C | 57% | 6.9°C | 11°C | - | 0% | 0.55kPa |
| 14:00 | 4.6% | 1.5°C | 10°C | 50% | 7.5°C | 11°C | - | 0% | 0.67kPa |
| 15:00 | 4.4% | 0.7°C | 11°C | 47% | 8°C | 12°C | - | 0% | 0.73kPa |
| 16:00 | 0% | 1.3°C | 10°C | 50% | 8.2°C | 11°C | - | 0% | 0.68kPa |
| 17:00 | 0% | 2.7°C | 6.9°C | 62% | 8.3°C | 9.6°C | - | 2% | 0.45kPa |
| 18:00 ☾ | 0% | 2°C | 5.1°C | 70% | 8.1°C | 7.1°C | - | 1% | 0.3kPa |
| 19:00 ☾ | 4.9% | 2.3°C | 3.6°C | 77% | 7.8°C | 5.9°C | - | 1% | 0.21kPa |
| 20:00 ☾ | 4.4% | 1.8°C | 3.6°C | 77% | 7.4°C | 5.4°C | - | 4% | 0.2kPa |
| 21:00 ☾ | 4.4% | 1.7°C | 3.5°C | 78% | 7.1°C | 5.2°C | - | 5% | 0.2kPa |
| 22:00 ☾ | 4.4% | 2.1°C | 3.1°C | 80% | 6.8°C | 5.2°C | - | 5% | 0.18kPa |
| 23:00 ☾ | 2.8% | 2.1°C | 2.7°C | 83% | 6.5°C | 4.8°C | - | 31% | 0.15kPa |
| Wed, Feb 18
Sunrise 07:08
Sunset 17:46 | |||||||||
| 24:00 ☾ | 2.1% | 2.1°C | 2.5°C | 84% | 6.2°C | 4.6°C | - | 100% | 0.14kPa |
| 01:00 ☾ | 22% | 2°C | 2.7°C | 82% | 5.9°C | 4.7°C | - | 100% | 0.15kPa |
| 02:00 ☾ | 22% | 1.8°C | 2.8°C | 82% | 5.7°C | 4.6°C | - | 100% | 0.15kPa |
| 03:00 ☾ | 22% | 1.5°C | 2.8°C | 82% | 5.5°C | 4.3°C | - | 100% | 0.15kPa |
| 04:00 ☾ | 22% | 1.2°C | 2.9°C | 81% | 5.3°C | 4.1°C | - | 100% | 0.15kPa |
| 05:00 ☾ | 30% | 1°C | 3.2°C | 80% | 5.1°C | 4.2°C | - | 100% | 0.16kPa |
| 06:00 ☾ | 30% | 0.8°C | 3.3°C | 79% | 5°C | 4.1°C | - | 100% | 0.17kPa |
| 07:00 ☾ | 32% | 0.7°C | 3.2°C | 80% | 4.8°C | 3.9°C | - | 98% | 0.17kPa |
| 08:00 | 30% | 2.3°C | 3.4°C | 79% | 5.7°C | 5.7°C | - | 99% | 0.19kPa |
| 09:00 | 3.4% | 3.9°C | 3.6°C | 78% | 6.6°C | 7.5°C | - | 99% | 0.23kPa |
| 10:00 | 3.2% | 5.5°C | 3.8°C | 77% | 7.5°C | 9.3°C | - | 100% | 0.27kPa |
| 11:00 | 3.2% | 5.6°C | 3.3°C | 80% | 7.5°C | 8.9°C | - | 99% | 0.23kPa |
| 12:00 | 1.9% | 5.6°C | 2.9°C | 82% | 7.5°C | 8.5°C | - | 97% | 0.2kPa |
| 13:00 | 1.9% | 5.7°C | 2.4°C | 84% | 7.6°C | 8.1°C | - | 96% | 0.17kPa |
| 14:00 | 1.9% | 5.2°C | 2.4°C | 84% | 7.5°C | 7.6°C | - | 97% | 0.16kPa |
| 15:00 | 1.9% | 4.7°C | 2.4°C | 84% | 7.4°C | 7.1°C | - | 99% | 0.16kPa |
| 16:00 | 1.9% | 4.2°C | 2.4°C | 85% | 7.3°C | 6.6°C | - | 100% | 0.15kPa |
| 17:00 | 1.9% | 4.8°C | 2°C | 87% | 7.2°C | 6.8°C | - | 96% | 0.13kPa |
| 18:00 ☾ | 1.6% | 5.4°C | 1.6°C | 90% | 7°C | 7°C | - | 92% | 0.1kPa |
| 19:00 ☾ | 1.6% | 6°C | 1.1°C | 92% | 6.9°C | 7.1°C | - | 88% | 0.08kPa |
| 20:00 ☾ | 1.6% | 6.7°C | 1.1°C | 93% | 7°C | 7.8°C | - | 92% | 0.08kPa |
| 21:00 ☾ | 1.4% | 7.4°C | 1°C | 93% | 7.1°C | 8.4°C | - | 96% | 0.07kPa |
| 22:00 ☾ | 1% | 8.1°C | 0.9°C | 94% | 7.2°C | 9°C | - | 100% | 0.07kPa |
| 23:00 ☾ | 1.7% | 7.9°C | 1.4°C | 91% | 7.2°C | 9.3°C | - | 91% | 0.11kPa |
| Thu, Feb 19
Sunrise 07:07
Sunset 17:48 | |||||||||
| 24:00 ☾ | 1.7% | 7.7°C | 1.9°C | 88% | 7.3°C | 9.6°C | - | 83% | 0.14kPa |
| 01:00 ☾ | 1.6% | 7.5°C | 2.3°C | 85% | 7.4°C | 9.8°C | - | 74% | 0.18kPa |
| 02:00 ☾ | 0% | 7.9°C | 2.5°C | 84% | 7.6°C | 10°C | - | 68% | 0.2kPa |
How to read: these inputs help produce the derived score; they are not requirements by themselves.
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