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Rule Morning Frost

San Gimignano - Morning Frost - Tuscany

San Gimignano, 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 28% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature10.5°C
Dew Point6.4°C (moderate dew point)
Wind Speed0.8m/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✕0%0.85m/s
21:00✕0%0.32m/s
22:00✕0%0.24m/s
23:00✕0%0.4m/s
Sun, Feb 22
24:00✕0%0.76m/s
01:00✕0%0.59m/s
02:00✕3.8%0.55m/s
03:00✕3.8%0.72m/s
04:00✕3.6%0.84m/s
05:00✕3.6%0.96m/s
06:00✓2.1%1.1m/s
07:00✓2.1%1.3m/s
08:00✓2.5%1.4m/s
09:00✕5%0.76m/s
10:00✕3.6%0.8m/s
11:00✕0%1.2m/s
12:00✕0%0.28m/s
13:00✕0%0.89m/s
14:00✕0%2m/s
15:00✕0%2.8m/s
16:00✕0%3.4m/s
17:00✕0%2.5m/s
18:00✕0%1.6m/s
19:00✕0%0.9m/s
20:00✕0%0.8m/s
21:00✕0%1.1m/s
22:00✕0%1.4m/s
23:00✕0%1.1m/s
Mon, Feb 23
24:00✕0%1.4m/s
01:00✕0%1.4m/s
02:00✕0%1.7m/s
03:00✕0%2m/s
04:00✕0%2m/s
05:00✕0%2m/s
06:00✓2.1%1.5m/s
07:00✓1.9%1.7m/s
08:00✓1.9%2.2m/s
09:00✕2.5%1.7m/s
10:00✕0%0.75m/s
11:00✕0%0.11m/s
12:00✕0%1.5m/s
13:00✕0%2.3m/s
14:00✕0%2.5m/s
15:00✕0%2.1m/s
16:00✕0%2.3m/s
17:00✕0%1.7m/s
18:00✕0%0.78m/s
19:00✕0%0.86m/s
20:00✕0%0.22m/s
21:00✕0%0.63m/s
22:00✕0%1m/s
23:00✕0%1.4m/s
Tue, Feb 24
24:00✕0%0.57m/s
01:00✕0%0.59m/s
02:00✕0%0.96m/s
03:00✕0%1.2m/s
04:00✕0%1.2m/s
05:00✕3.3%1.4m/s
06:00✓2.2%1.3m/s
07:00✓3.3%0.99m/s
08:00✓3.6%1.5m/s
09:00✕4.9%1.1m/s
10:00✕0%0.5m/s
11:00✕0%0.85m/s
12:00✕0%1.6m/s
13:00✕0%2.2m/s
14:00✕0%2.2m/s
15:00✕0%2.1m/s
16:00✕0%2.1m/s
17:00✕0%2.3m/s
18:00✕0%1.9m/s
19:00✕0%1.4m/s
20:00✕0%0.64m/s
21:00✕0%0.4m/s
22:00✕0%0.38m/s
23:00✕0%0.32m/s
Wed, Feb 25
24:00✕0%0.45m/s
01:00✕0%0.72m/s
02:00✕0%0.94m/s
03:00✕0%1.2m/s
04:00✕0%1.4m/s
05:00✕0%1.4m/s
06:00✓0%1.4m/s
07:00✓0%1.4m/s
08:00✓0%1.2m/s
09:00✕0%1m/s
10:00✕0%0.8m/s
11:00✕0%1m/s
12:00✕0%1.2m/s
13:00✕0%1.4m/s
14:00✕0%1.4m/s
15:00✕0%1.4m/s
16:00✕0%1.4m/s
17:00✕0%1.2m/s
18:00✕0%0.94m/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 07:04 Sunset 17:55
20:00 ☾
6.4°C 11°C 8.7°C - 5% 0.17kPa
21:00 ☾
6°C 10°C 8.4°C - 5% 0.17kPa
22:00 ☾
5.7°C 9.8°C 8°C - 37% 0.16kPa
23:00 ☾
5.3°C 9.5°C 7.7°C - 43% 0.16kPa
Mon, Feb 23 Sunrise 07:04 Sunset 17:55
24:00 ☾
4.9°C 9.2°C 7.4°C - 6% 0.17kPa
01:00 ☾
4.7°C 8.9°C 7.2°C - 80% 0.16kPa
02:00 ☾
4.6°C 8.6°C 7.1°C - 100% 0.16kPa
03:00 ☾
4.6°C 8.4°C 7.2°C - 100% 0.17kPa
04:00 ☾
4.6°C 8.2°C 7.2°C - 100% 0.17kPa
05:00 ☾
4.9°C 8°C 7.2°C - 100% 0.15kPa
06:00 ☾
5.2°C 7.9°C 7.1°C - 100% 0.13kPa
07:00 ☾
5.6°C 7.7°C 7.2°C - 100% 0.11kPa
08:00
6.6°C 7.7°C 8.6°C - 100% 0.14kPa
09:00
7.5°C 7.9°C 10°C - 46% 0.2kPa
10:00
7.8°C 8.4°C 12°C - 66% 0.34kPa
11:00
7.6°C 8.8°C 13°C - 99% 0.42kPa
12:00
7.6°C 9.4°C 14°C - 95% 0.52kPa
13:00
7.8°C 9.9°C 14°C - 56% 0.52kPa
14:00
8.2°C 10°C 14°C - 100% 0.49kPa
15:00
8.2°C 11°C 14°C - 6% 0.46kPa
16:00
8.4°C 11°C 13°C - 6% 0.44kPa
17:00
8.9°C 11°C 12°C - 46% 0.29kPa
18:00 ☾
7.8°C 11°C 9.9°C - 7% 0.17kPa
19:00 ☾
7.4°C 11°C 9.3°C - 6% 0.14kPa
20:00 ☾
7.1°C 10°C 8.9°C - 5% 0.13kPa
21:00 ☾
6.9°C 10°C 8.6°C - 5% 0.12kPa
22:00 ☾
6.6°C 9.7°C 8.4°C - 5% 0.12kPa
23:00 ☾
6.4°C 9.4°C 8.2°C - 5% 0.12kPa
Tue, Feb 24 Sunrise 07:02 Sunset 17:56
24:00 ☾
6°C 9.1°C 7.8°C - 5% 0.12kPa
01:00 ☾
5.8°C 8.9°C 7.6°C - 4% 0.12kPa
02:00 ☾
5.6°C 8.6°C 7.3°C - 2% 0.11kPa
03:00 ☾
5.5°C 8.3°C 7.1°C - 5% 0.11kPa
04:00 ☾
5.2°C 8.1°C 6.9°C - 5% 0.11kPa
05:00 ☾
5.2°C 7.9°C 6.8°C - 5% 0.1kPa
06:00 ☾
4.9°C 7.6°C 6.5°C - 51% 0.1kPa
07:00 ☾
4.7°C 7.4°C 6.2°C - 5% 0.1kPa
08:00
5.7°C 7.3°C 7.5°C - 5% 0.12kPa
09:00
6.5°C 7.5°C 9.6°C - 5% 0.23kPa
10:00
7.1°C 8.1°C 11°C - 5% 0.34kPa
11:00
7.4°C 8.8°C 13°C - 5% 0.46kPa
12:00
7.5°C 9.6°C 14°C - 20% 0.54kPa
13:00
7.8°C 10°C 15°C - 48% 0.6kPa
14:00
7.8°C 11°C 15°C - 100% 0.62kPa
15:00
7.9°C 11°C 15°C - 99% 0.6kPa
16:00
8.2°C 11°C 14°C - 100% 0.52kPa
17:00
8.9°C 12°C 13°C - 90% 0.37kPa
18:00 ☾
8.2°C 11°C 12°C - 8% 0.3kPa
19:00 ☾
7.6°C 11°C 10°C - 0% 0.2kPa
20:00 ☾
7.1°C 11°C 9.5°C - 0% 0.18kPa
21:00 ☾
6.9°C 10°C 9.1°C - 0% 0.16kPa
22:00 ☾
6.7°C 10°C 8.8°C - 0% 0.15kPa
23:00 ☾
6.5°C 9.9°C 8.5°C - 0% 0.14kPa
Wed, Feb 25 Sunrise 07:00 Sunset 17:57
24:00 ☾
6.4°C 9.6°C 8.3°C - 0% 0.14kPa
01:00 ☾
6.1°C 9.3°C 8°C - 0% 0.13kPa
02:00 ☾
6.7°C 9°C 9.3°C - 0% 0.19kPa
03:00 ☾
7.3°C 8.7°C 11°C - 0% 0.26kPa
04:00 ☾
7.9°C 8.4°C 12°C - 0% 0.34kPa
05:00 ☾
8.2°C 9.1°C 13°C - 10% 0.43kPa
06:00 ☾
8.5°C 9.9°C 14°C - 19% 0.53kPa
07:00
8.8°C 11°C 16°C - 29% 0.64kPa
08:00
8.6°C 11°C 16°C - 53% 0.66kPa
09:00
8.5°C 12°C 16°C - 76% 0.69kPa
10:00
8.3°C 12°C 16°C - 100% 0.72kPa
11:00
7.9°C 12°C 15°C - 100% 0.66kPa
12:00
7.5°C 12°C 14°C - 100% 0.61kPa
13:00
7°C 12°C 14°C - 100% 0.56kPa
14:00
7.1°C 12°C 13°C - 99% 0.5kPa
15:00
7.2°C 12°C 13°C - 97% 0.45kPa
16:00
7.2°C 12°C 12°C - 96% 0.39kPa
17:00
7°C 12°C 11°C - 66% 0.34kPa
18:00 ☾
6.8°C 12°C 11°C - 35% 0.29kPa
19:00 ☾
6.6°C 11°C 9.9°C - 5% 0.24kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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