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Rule Morning Frost

Aysgarth Falls - Morning Frost - Yorkshire Dales

Aysgarth, England, United Kingdom

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
Wind Speed 100% failing
Time Window 83% failing

Currently

Real-time conditions
Soil Temperature11.0°C
Dew Point8.8°C (moderate dew point)
Wind Speed7.3m/s (moderate winds)
Cloud Cover100%

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 95 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
03:000%6.2m/s
04:000%6.7m/s
05:000%5.8m/s
06:000%4.4m/s
07:000%4.6m/s
08:000%6.8m/s
09:000%7.8m/s
10:000%8.1m/s
11:000%9.2m/s
12:000%9.1m/s
13:000%9.2m/s
14:000%10m/s
15:000%10m/s
16:000%8.5m/s
17:000%7.1m/s
18:000%7.6m/s
19:000%7.6m/s
20:000%7.3m/s
21:000%7.2m/s
22:000%7m/s
23:000%6.9m/s
Mon, Jun 8
24:000%7.1m/s
01:000%6.8m/s
02:000%6.6m/s
03:000%7.3m/s
04:000%6.4m/s
05:000%4.9m/s
06:000%4.8m/s
07:000%4.4m/s
08:000%2.9m/s
09:000%5.7m/s
10:000%5.5m/s
11:000%5.5m/s
12:000%6.5m/s
13:000%6.8m/s
14:000%6.5m/s
15:000%6.6m/s
16:000%6.6m/s
17:000%6.2m/s
18:000%5.9m/s
19:000%6m/s
20:000%5.4m/s
21:000%4.3m/s
22:000%4.2m/s
23:000%4.4m/s
Tue, Jun 9
24:000%4.4m/s
01:000%4.2m/s
02:000%4.4m/s
03:000%4.4m/s
04:000%4.5m/s
05:000%5.1m/s
06:000%5.9m/s
07:000%6.4m/s
08:000%7.3m/s
09:000%8.7m/s
10:000%8.6m/s
11:000%8.1m/s
12:000%8.5m/s
13:000%9.1m/s
14:000%10m/s
15:000%10m/s
16:000%10m/s
17:000%10m/s
18:000%8.6m/s
19:000%7.1m/s
20:000%6m/s
21:000%4.9m/s
22:000%3.4m/s
23:000%3.3m/s
Wed, Jun 10
24:000%3.2m/s
01:000%3.3m/s
02:000%3.7m/s
03:000%5m/s
04:000%4.4m/s
05:000%4.1m/s
06:000%4.3m/s
07:000%4.4m/s
08:000%4.7m/s
09:000%4.9m/s
10:000%4.2m/s
11:000%5.8m/s
12:000%6.8m/s
13:000%6.6m/s
14:000%5.7m/s
15:000%4.9m/s
16:000%4m/s
17:000%3.6m/s
18:000%3.3m/s
19:000%3m/s
20:000%2.9m/s
21:000%2.9m/s
22:000%2.8m/s
23:000%3m/s
Thu, Jun 11
24:001.4%3.2m/s
01:001.7%3.5m/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
Mon, Jun 8 Sunrise 04:36 Sunset 21:38
03:00
8.8°C 11°C 9.4°C - 100% 0.05kPa
04:00
8.9°C 11°C 9.6°C - 100% 0.05kPa
05:00
9.2°C 11°C 9.5°C - 100% 0.03kPa
06:00
7.6°C 11°C 8.2°C - 100% 0.04kPa
07:00
7.2°C 11°C 8.1°C - 100% 0.07kPa
08:00
6.9°C 11°C 8.2°C - 100% 0.09kPa
09:00
7.5°C 10°C 9.6°C - 100% 0.16kPa
10:00
7°C 11°C 10°C - 85% 0.26kPa
11:00
6.2°C 11°C 12°C - 49% 0.43kPa
12:00
5.9°C 11°C 12°C - 83% 0.51kPa
13:00
5.7°C 11°C 12°C - 10% 0.52kPa
14:00
5.3°C 11°C 13°C - 18% 0.57kPa
15:00
4.3°C 11°C 12°C - 5% 0.59kPa
16:00
4.1°C 11°C 12°C - 5% 0.58kPa
17:00
4.4°C 11°C 11°C - 5% 0.52kPa
18:00
4.5°C 11°C 11°C - 4% 0.45kPa
19:00
5.1°C 11°C 9.8°C - 3% 0.33kPa
20:00
5.7°C 11°C 8.7°C - 2% 0.21kPa
21:00
5.3°C 11°C 7.4°C - 5% 0.13kPa
22:00
5.2°C 11°C 6.4°C - 64% 0.07kPa
23:00
5.3°C 11°C 6.6°C - 92% 0.08kPa
Tue, Jun 9 Sunrise 04:36 Sunset 21:38
24:00
5.3°C 11°C 6.7°C - 89% 0.09kPa
01:00
5.6°C 10°C 6.8°C - 95% 0.07kPa
02:00
5.9°C 10°C 7.7°C - 100% 0.12kPa
03:00
6°C 10°C 7.1°C - 100% 0.07kPa
04:00
5.8°C 9.9°C 6.6°C - 100% 0.05kPa
05:00
5.9°C 9.7°C 6.7°C - 100% 0.05kPa
06:00
6.1°C 9.7°C 7.2°C - 63% 0.07kPa
07:00
6.1°C 9.6°C 7.5°C - 13% 0.09kPa
08:00
5.7°C 9.6°C 8.1°C - 5% 0.17kPa
09:00
5.7°C 9.6°C 8.7°C - 71% 0.21kPa
10:00
6.5°C 9.5°C 8.4°C - 100% 0.14kPa
11:00
5.8°C 9.5°C 7.1°C - 100% 0.09kPa
12:00
6.5°C 9.5°C 7.7°C - 94% 0.08kPa
13:00
6.8°C 9.5°C 8.3°C - 98% 0.11kPa
14:00
6.8°C 9.6°C 9.5°C - 95% 0.2kPa
15:00
6.5°C 9.7°C 9.9°C - 89% 0.25kPa
16:00
6.6°C 9.8°C 9.9°C - 48% 0.25kPa
17:00
5.8°C 9.8°C 10°C - 3% 0.34kPa
18:00
5.6°C 9.9°C 10°C - 5% 0.33kPa
19:00
6°C 10°C 9.8°C - 5% 0.27kPa
20:00
6°C 9.9°C 9°C - 20% 0.21kPa
21:00
5.7°C 9.8°C 7.8°C - 94% 0.14kPa
22:00
5.2°C 9.7°C 6.2°C - 25% 0.06kPa
23:00
4.6°C 9.5°C 5.4°C - 38% 0.05kPa
Wed, Jun 10 Sunrise 04:35 Sunset 21:39
24:00
4.3°C 9.3°C 5.1°C - 88% 0.05kPa
01:00
4.5°C 9.1°C 5.2°C - 99% 0.04kPa
02:00
4.6°C 8.9°C 5.5°C - 98% 0.06kPa
03:00
4.8°C 8.8°C 6.9°C - 100% 0.13kPa
04:00
5.3°C 8.7°C 6.9°C - 100% 0.11kPa
05:00
5.4°C 8.6°C 6.6°C - 100% 0.07kPa
06:00
5.2°C 8.6°C 6.6°C - 100% 0.09kPa
07:00
5.3°C 8.6°C 7.1°C - 96% 0.11kPa
08:00
5.3°C 8.5°C 7.8°C - 99% 0.16kPa
09:00
5.9°C 8.6°C 7.6°C - 100% 0.12kPa
10:00
5.8°C 8.6°C 7.2°C - 98% 0.09kPa
11:00
5.8°C 8.6°C 9°C - 100% 0.23kPa
12:00
5.9°C 8.8°C 8.9°C - 100% 0.2kPa
13:00
6.1°C 8.8°C 9.2°C - 95% 0.22kPa
14:00
6.1°C 8.9°C 8.4°C - 65% 0.16kPa
15:00
6°C 9°C 7.5°C - 34% 0.1kPa
16:00
5.9°C 9.2°C 6.7°C - 4% 0.05kPa
17:00
5.4°C 9°C 6.2°C - 35% 0.05kPa
18:00
4.9°C 8.8°C 5.6°C - 66% 0.05kPa
19:00
4.3°C 8.6°C 5.1°C - 97% 0.04kPa
20:00
4.4°C 8.4°C 5.1°C - 98% 0.04kPa
21:00
4.5°C 8.2°C 5.2°C - 99% 0.04kPa
22:00
4.5°C 8.1°C 5.2°C - 100% 0.04kPa
23:00
5.4°C 8°C 6.4°C - 100% 0.06kPa
Thu, Jun 11 Sunrise 04:35 Sunset 21:40
24:00
6.2°C 7.9°C 7.5°C - 100% 0.09kPa
01:00
7°C 7.9°C 8.6°C - 100% 0.11kPa
02:00
7.4°C 7.9°C 8.7°C - 100% 0.09kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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