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Rule Morning Frost

Pienza - Morning Frost - Tuscany

Pienza, Tuscany, Italy

Frost crystals on calm, cold mornings near sunrise

No opportunities right now
Here’s what usually blocks matches

No Morning Frost opportunities in the next 14 days

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Rule requirements (key thresholds)
Time Window · Sunrise -45m to +90m Frost Probability · ≥ 60.0% Wind Speed · ≤ 1.5m/s

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Frost Probability 100% failing
Time Window 88% failing
Wind Speed 33% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature9.8°C
Dew Point5.9°C (moderate dew point)
Wind Speed1.7m/s (calm conditions)
Cloud Cover5%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Rome

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Rome
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sat, Feb 21
20:00✕5%0.32m/s
21:00✕5%0.44m/s
22:00✕5%0.56m/s
23:00✕4.4%0.84m/s
Sun, Feb 22
24:00✕4.4%0.88m/s
01:00✕3.6%0.88m/s
02:00✕39%0.26m/s
03:00✕39%0.49m/s
04:00✕39%0.56m/s
05:00✕39%0.53m/s
06:00✓39%0.41m/s
07:00✓31%0.3m/s
08:00✓31%0.38m/s
09:00✕50%0.82m/s
10:00✕52%1m/s
11:00✕5%0.62m/s
12:00✕3.6%0.61m/s
13:00✕0%0.6m/s
14:00✕0%1.4m/s
15:00✕0%2.1m/s
16:00✕0%1.9m/s
17:00✕0%1.7m/s
18:00✕0%1.2m/s
19:00✕0%1.6m/s
20:00✕0%1.7m/s
21:00✕0%2m/s
22:00✕0%1.8m/s
23:00✕0%2m/s
Mon, Feb 23
24:00✕0%1.9m/s
01:00✕0%1.8m/s
02:00✕2.1%1.7m/s
03:00✕1.8%1.2m/s
04:00✕1.8%1.3m/s
05:00✕1.4%1.6m/s
06:00✓1.4%1.6m/s
07:00✓1.2%1.8m/s
08:00✓1.6%1.8m/s
09:00✕2.1%1.5m/s
10:00✕5%0.68m/s
11:00✕0%0.81m/s
12:00✕0%1.4m/s
13:00✕0%0.51m/s
14:00✕0%1.2m/s
15:00✕0%1.7m/s
16:00✕0%1.4m/s
17:00✕0%1.5m/s
18:00✕0%1.3m/s
19:00✕0%1.5m/s
20:00✕0%2.5m/s
21:00✕0%2.3m/s
22:00✕0%1.5m/s
23:00✕0%2.1m/s
Tue, Feb 24
24:00✕0%2.4m/s
01:00✕0%1.6m/s
02:00✕0%1.1m/s
03:00✕0%0.48m/s
04:00✕0%0.99m/s
05:00✕3.3%0.9m/s
06:00✓3.3%1m/s
07:00✓3.5%0.77m/s
08:00✓3.8%0.66m/s
09:00✕5%0.66m/s
10:00✕5%0.67m/s
11:00✕0%0.78m/s
12:00✕0%1.3m/s
13:00✕0%1.6m/s
14:00✕0%2m/s
15:00✕0%1.9m/s
16:00✕0%1.8m/s
17:00✕0%1.4m/s
18:00✕0%1m/s
19:00✕0%0.35m/s
20:00✕0%0.58m/s
21:00✕0%0.68m/s
22:00✕0%0.74m/s
23:00✕0%0.71m/s
Wed, Feb 25
24:00✕0%0.47m/s
01:00✕0%0.19m/s
02:00✕0%0.64m/s
03:00✕0%1.1m/s
04:00✕0%1.5m/s
05:00✕0%1.5m/s
06:00✓0%1.4m/s
07:00✓0%1.3m/s
08:00✓0%1.1m/s
09:00✕0%0.87m/s
10:00✕0%0.64m/s
11:00✕0%0.72m/s
12:00✕0%0.8m/s
13:00✕0%0.87m/s
14:00✕0%0.88m/s
15:00✕0%0.88m/s
16:00✕0%0.88m/s
17:00✕0%0.96m/s
18:00✕0%1m/s
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Frost Probability mean?

Inputs that drive the score

This 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
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, Feb 22 Sunrise 07:01 Sunset 17:53
20:00 ☾
5.9°C 9.8°C 8.3°C - 5% 0.17kPa
21:00 ☾
5.6°C 9.4°C 7.9°C - 5% 0.15kPa
22:00 ☾
5.1°C 9.1°C 7.4°C - 5% 0.15kPa
23:00 ☾
4.3°C 8.8°C 7°C - 5% 0.17kPa
Mon, Feb 23 Sunrise 07:01 Sunset 17:53
24:00 ☾
3.5°C 8.4°C 6.6°C - 6% 0.19kPa
01:00 ☾
3.6°C 8.1°C 6.2°C - 22% 0.15kPa
02:00 ☾
4.5°C 7.8°C 6.2°C - 93% 0.11kPa
03:00 ☾
5.4°C 7.7°C 7°C - 93% 0.1kPa
04:00 ☾
5.6°C 7.5°C 6.7°C - 100% 0.07kPa
05:00 ☾
5.9°C 7.4°C 6.7°C - 100% 0.05kPa
06:00 ☾
6°C 7.3°C 6.9°C - 100% 0.06kPa
07:00
5.8°C 7.2°C 6.6°C - 100% 0.05kPa
08:00
6.3°C 7.1°C 7.4°C - 100% 0.07kPa
09:00
6.7°C 7.3°C 9°C - 95% 0.16kPa
10:00
6.8°C 7.7°C 11°C - 5% 0.29kPa
11:00
6.8°C 8.5°C 12°C - 5% 0.44kPa
12:00
6.6°C 9.2°C 13°C - 36% 0.54kPa
13:00
6.6°C 10°C 14°C - 29% 0.63kPa
14:00
6.5°C 11°C 14°C - 90% 0.67kPa
15:00
6.5°C 11°C 14°C - 100% 0.62kPa
16:00
6.8°C 11°C 13°C - 82% 0.53kPa
17:00
7.6°C 11°C 12°C - 24% 0.38kPa
18:00 ☾
6.5°C 11°C 9.9°C - 46% 0.25kPa
19:00 ☾
7°C 11°C 9.6°C - 44% 0.2kPa
20:00 ☾
7.6°C 11°C 9.3°C - 19% 0.13kPa
21:00 ☾
7.2°C 10°C 8.4°C - 8% 0.09kPa
22:00 ☾
6.7°C 10°C 7.6°C - 11% 0.07kPa
23:00 ☾
6.5°C 9.7°C 7.3°C - 11% 0.05kPa
Tue, Feb 24 Sunrise 06:59 Sunset 17:54
24:00 ☾
6.3°C 9.4°C 7.1°C - 11% 0.05kPa
01:00 ☾
6°C 9°C 6.8°C - 5% 0.05kPa
02:00 ☾
5.7°C 8.7°C 6.6°C - 5% 0.06kPa
03:00 ☾
5.4°C 8.4°C 6.4°C - 2% 0.06kPa
04:00 ☾
5.2°C 8.1°C 6.2°C - 5% 0.06kPa
05:00 ☾
5°C 7.8°C 6.1°C - 5% 0.07kPa
06:00 ☾
4.9°C 7.5°C 6.1°C - 5% 0.07kPa
07:00
4.6°C 7.2°C 5.9°C - 5% 0.08kPa
08:00
5.7°C 7.1°C 7.3°C - 5% 0.11kPa
09:00
6.4°C 7.3°C 9.4°C - 5% 0.22kPa
10:00
7°C 7.9°C 11°C - 5% 0.33kPa
11:00
7°C 8.6°C 13°C - 7% 0.45kPa
12:00
7°C 9.4°C 14°C - 33% 0.55kPa
13:00
7.1°C 10°C 14°C - 41% 0.6kPa
14:00
7.2°C 11°C 14°C - 55% 0.62kPa
15:00
7.2°C 11°C 14°C - 68% 0.6kPa
16:00
7.3°C 12°C 14°C - 100% 0.55kPa
17:00
8.1°C 12°C 13°C - 87% 0.4kPa
18:00 ☾
7.1°C 11°C 11°C - 31% 0.3kPa
19:00 ☾
6.8°C 11°C 9.9°C - 5% 0.23kPa
20:00 ☾
6.6°C 11°C 9.2°C - 4% 0.19kPa
21:00 ☾
6.4°C 10°C 8.7°C - 4% 0.16kPa
22:00 ☾
6.3°C 10°C 8.4°C - 0% 0.15kPa
23:00 ☾
6.1°C 9.7°C 8°C - 0% 0.13kPa
Wed, Feb 25 Sunrise 06:57 Sunset 17:55
24:00 ☾
5.9°C 9.4°C 7.7°C - 0% 0.12kPa
01:00 ☾
5.7°C 9°C 7.4°C - 0% 0.11kPa
02:00 ☾
6.5°C 8.9°C 8.9°C - 0% 0.18kPa
03:00 ☾
7.2°C 8.7°C 10°C - 0% 0.26kPa
04:00 ☾
7.8°C 8.5°C 12°C - 0% 0.35kPa
05:00 ☾
8°C 9.2°C 13°C - 5% 0.44kPa
06:00 ☾
8.2°C 9.8°C 14°C - 10% 0.54kPa
07:00
8.3°C 10°C 15°C - 16% 0.65kPa
08:00
8.3°C 11°C 15°C - 34% 0.64kPa
09:00
8.4°C 11°C 15°C - 53% 0.64kPa
10:00
8.4°C 12°C 15°C - 72% 0.63kPa
11:00
8.6°C 12°C 14°C - 79% 0.52kPa
12:00
8.7°C 12°C 13°C - 86% 0.41kPa
13:00
8.7°C 12°C 12°C - 92% 0.32kPa
14:00
8.6°C 12°C 12°C - 81% 0.29kPa
15:00
8.4°C 12°C 12°C - 71% 0.26kPa
16:00
8.3°C 11°C 11°C - 60% 0.24kPa
17:00
8.1°C 11°C 11°C - 48% 0.21kPa
18:00 ☾
7.9°C 11°C 10°C - 36% 0.18kPa
19:00 ☾
7.6°C 11°C 9.6°C - 25% 0.15kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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