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Rule Morning Frost

Buttertubs Pass - Morning Frost - Yorkshire Dales

Hawes, England, United Kingdom

Frost crystals on calm, cold mornings near sunrise

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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
Wind Speed 100% failing
Time Window 83% failing

Currently

Real-time conditions
Soil Temperature10.1°C
Dew Point9.7°C (moderate dew point)
Wind Speed6.6m/s (moderate winds)
Cloud Cover87%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

No opportunities in the next 10 days

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

What this forecast looks for

Plain-language explanation from the rule

This forecast identifies when freezing conditions create photogenic frost patterns across the Yorkshire Dales' distinctive limestone landscape. We track overnight temperatures, humidity, clear skies, and wind conditions to predict when hoar frost transforms waterfalls, stone walls, and limestone formations.

The Dales' elevation and northern position mean frost conditions are common from November through March. Freezing temperatures transform the region's numerous waterfalls into ice sculptures, while hoar frost decorates limestone pavements and thousands of miles of dry-stone walls with intricate crystal patterns.

What makes Yorkshire Dales frost photography special:

  • Frozen waterfalls - Aysgarth Falls and Hardraw Force develop dramatic ice formations in extended freezes
  • Limestone patterns - Hoar frost accentuates the geometric clints and grikes of limestone pavements
  • Stone wall networks - Miles of traditional walls become white geometric patterns across frozen hillsides
  • Historic barns - Field barns and traditional stone buildings gain fairy-tale quality under heavy frost

Aysgarth Falls' triple cascades develop stunning ice formations during prolonged freezes, with water still flowing beneath frozen edges. Hardraw Force—England's highest single-drop waterfall—creates an amphitheater of ice when temperatures stay below freezing for days. The limestone pavement at Malham becomes even more geometric under hoar frost, with ice crystals following the rock's natural patterns. Traditional field barns scattered across high pastures gain storybook quality when frost-covered under blue winter skies. Bolton Abbey's medieval priory ruins take on Gothic atmosphere when frost-covered. Stone walls create endless compositional opportunities—their geometric patterns emphasized by frost against dark winter grass. Dawn light is crucial—arrive early to catch low sun illuminating frost crystals before they melt. Cold, clear nights with high pressure produce the heaviest frost.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 86 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sun, Jun 7
06:000%3m/s
07:000%4.1m/s
08:000%5.4m/s
09:000%6.7m/s
10:000%7.6m/s
11:000%8.2m/s
12:000%7.6m/s
13:000%9.1m/s
14:000%9.9m/s
15:000%9.3m/s
16:000%7m/s
17:000%6.4m/s
18:000%7.2m/s
19:000%7.1m/s
20:000%6.8m/s
21:000%6.6m/s
22:000%5.8m/s
23:000%5.7m/s
Mon, Jun 8
24:000%6m/s
01:000%5.3m/s
02:000%4.5m/s
03:000%5.2m/s
04:000%5.7m/s
05:000%4.7m/s
06:000%4.4m/s
07:000%2.9m/s
08:000%2m/s
09:000%3.4m/s
10:000%5.6m/s
11:000%6.2m/s
12:000%6.5m/s
13:000%6.9m/s
14:000%7.2m/s
15:000%7.3m/s
16:000%7.5m/s
17:000%7.1m/s
18:000%6.8m/s
19:000%6.2m/s
20:000%5.2m/s
21:000%4.6m/s
22:000%4.2m/s
23:000%4.1m/s
Tue, Jun 9
24:000%5m/s
01:000%5.5m/s
02:000%5.8m/s
03:000%5m/s
04:000%6.1m/s
05:000%6.7m/s
06:000%5.6m/s
07:000%6.5m/s
08:000%8m/s
09:000%7.8m/s
10:000%7.8m/s
11:000%8.6m/s
12:000%8.9m/s
13:000%8.5m/s
14:000%8.5m/s
15:000%9.1m/s
16:000%8.3m/s
17:000%8.6m/s
18:000%7.6m/s
19:000%6.9m/s
20:000%5.7m/s
21:000%4.2m/s
22:000%2.5m/s
23:000%2.2m/s
Wed, Jun 10
24:000%2.4m/s
01:000%2.9m/s
02:000%3.7m/s
03:000%4.4m/s
04:000%5.2m/s
05:000%5.7m/s
06:000%6.3m/s
07:000%6.9m/s
08:000%6.9m/s
09:000%7m/s
10:000%7m/s
11:000%6.6m/s
12:000%6.2m/s
13:000%5.8m/s
14:000%5.2m/s
15:000%4.6m/s
16:000%4m/s
17:000%4m/s
18:000%4m/s
19:000%4.1m/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/London
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, Jun 7 Sunrise 04:37 Sunset 21:38
21:00
9.7°C 10°C 11°C - 87% 0.1kPa
22:00
9.5°C 10°C 10°C - 100% 0.06kPa
23:00
9.1°C 10°C 9.9°C - 100% 0.06kPa
Mon, Jun 8 Sunrise 04:37 Sunset 21:38
24:00
8.8°C 10°C 9.6°C - 100% 0.07kPa
01:00
8.8°C 10°C 9.3°C - 100% 0.04kPa
02:00
8.8°C 9.9°C 9.1°C - 100% 0.03kPa
03:00
8.9°C 9.9°C 9.3°C - 100% 0.03kPa
04:00
9.1°C 9.9°C 9.5°C - 100% 0.04kPa
05:00
9.2°C 9.9°C 9.6°C - 100% 0.03kPa
06:00
8.9°C 9.8°C 9.2°C - 100% 0.02kPa
07:00
7.5°C 9.7°C 8°C - 100% 0.04kPa
08:00
7.3°C 9.6°C 7.9°C - 100% 0.05kPa
09:00
6.9°C 9.6°C 8.1°C - 30% 0.08kPa
10:00
6.9°C 9.6°C 9.9°C - 95% 0.23kPa
11:00
6.2°C 9.7°C 11°C - 46% 0.35kPa
12:00
5.9°C 9.8°C 11°C - 69% 0.42kPa
13:00
6.1°C 9.8°C 11°C - 67% 0.37kPa
14:00
6°C 9.9°C 11°C - 41% 0.36kPa
15:00
5.3°C 10°C 11°C - 8% 0.44kPa
16:00
5.1°C 10°C 11°C - 5% 0.44kPa
17:00
5.1°C 10°C 11°C - 5% 0.4kPa
18:00
4.8°C 10°C 9.8°C - 4% 0.35kPa
19:00
5.5°C 10°C 9.1°C - 5% 0.26kPa
20:00
6°C 10°C 8.4°C - 7% 0.16kPa
21:00
5.7°C 9.9°C 7.4°C - 100% 0.11kPa
22:00
5.7°C 9.8°C 6.6°C - 100% 0.06kPa
23:00
5.7°C 9.6°C 6.6°C - 99% 0.06kPa
Tue, Jun 9 Sunrise 04:36 Sunset 21:39
24:00
6.3°C 9.5°C 7.3°C - 100% 0.07kPa
01:00
6.6°C 9.5°C 7.5°C - 100% 0.06kPa
02:00
6.6°C 9.4°C 7.2°C - 100% 0.04kPa
03:00
6.3°C 9.3°C 6.6°C - 100% 0.03kPa
04:00
6.1°C 9.2°C 6.4°C - 100% 0.02kPa
05:00
5.9°C 9.1°C 6.6°C - 37% 0.04kPa
06:00
5.2°C 9°C 5.9°C - 23% 0.04kPa
07:00
5.5°C 8.9°C 6.7°C - 38% 0.07kPa
08:00
6.2°C 8.9°C 7.3°C - 97% 0.07kPa
09:00
6°C 8.8°C 6.7°C - 100% 0.05kPa
10:00
5.7°C 8.6°C 6.2°C - 100% 0.03kPa
11:00
6.3°C 8.6°C 7.4°C - 100% 0.07kPa
12:00
6.6°C 8.7°C 7.3°C - 99% 0.05kPa
13:00
7.2°C 8.7°C 8.2°C - 99% 0.08kPa
14:00
7.1°C 8.7°C 8.3°C - 82% 0.08kPa
15:00
7.6°C 8.7°C 9°C - 100% 0.1kPa
16:00
7.5°C 8.7°C 8.9°C - 48% 0.11kPa
17:00
7.5°C 8.8°C 10°C - 35% 0.19kPa
18:00
7.4°C 8.8°C 10°C - 58% 0.21kPa
19:00
7.4°C 8.9°C 9.6°C - 47% 0.16kPa
20:00
7°C 8.7°C 8.7°C - 24% 0.12kPa
21:00
6.2°C 8.8°C 7.4°C - 22% 0.08kPa
22:00
4.8°C 8.7°C 5.7°C - 46% 0.06kPa
23:00
4.3°C 8.5°C 5.2°C - 67% 0.05kPa
Wed, Jun 10 Sunrise 04:36 Sunset 21:40
24:00
5°C 8.5°C 5.9°C - 96% 0.06kPa
01:00
5.8°C 8.4°C 7°C - 91% 0.08kPa
02:00
5.5°C 8.3°C 7.5°C - 94% 0.13kPa
03:00
5.2°C 8.3°C 8.1°C - 97% 0.19kPa
04:00
4.8°C 8.3°C 8.6°C - 100% 0.26kPa
05:00
5.1°C 8.4°C 9.3°C - 100% 0.29kPa
06:00
5.5°C 8.5°C 10°C - 100% 0.33kPa
07:00
5.8°C 8.6°C 11°C - 100% 0.36kPa
08:00
6°C 8.7°C 11°C - 100% 0.34kPa
09:00
6.2°C 8.8°C 10°C - 100% 0.32kPa
10:00
6.4°C 8.9°C 10°C - 100% 0.3kPa
11:00
6.3°C 8.9°C 10°C - 100% 0.29kPa
12:00
6.3°C 8.9°C 10°C - 100% 0.29kPa
13:00
6.3°C 9°C 10°C - 100% 0.28kPa
14:00
6°C 8.9°C 8.9°C - 87% 0.2kPa
15:00
5.7°C 8.8°C 7.7°C - 74% 0.13kPa
16:00
5.4°C 8.8°C 6.5°C - 60% 0.07kPa
17:00
5°C 8.6°C 6°C - 41% 0.06kPa
18:00
4.6°C 8.4°C 5.5°C - 21% 0.06kPa
19:00
4.2°C 8.3°C 5°C - 1% 0.05kPa
20:00
3.9°C 8.1°C 4.7°C - 2% 0.04kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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