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Rule Morning Frost

Ingleton Falls - Morning Frost - Yorkshire Dales

Ingleton, 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 85% failing

Currently

Real-time conditions
Soil Temperature6.3°C
Dew Point5.3°C (moderate dew point)
Wind Speed10.8m/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
Fri, Apr 3
20:002.5%6.7m/s
21:001.7%6.9m/s
22:0026%6.9m/s
23:0026%5.8m/s
Sat, Apr 4
24:0028%4.7m/s
01:0030%3.7m/s
02:0028%5m/s
03:0028%4.3m/s
04:0030%3.1m/s
05:0028%2.2m/s
06:0020%1.7m/s
07:0021%2.3m/s
08:0013%2.4m/s
09:0015%3.1m/s
10:0011%3.6m/s
11:0011%3m/s
12:0015%3.8m/s
13:0016%5m/s
14:0014%6.6m/s
15:0027%8.9m/s
16:0028%8.9m/s
17:0027%9.7m/s
18:002.6%11m/s
19:002.6%10m/s
20:002.6%11m/s
21:001.3%12m/s
22:001.4%16m/s
23:001.4%13m/s
Sun, Apr 5
24:001.3%14m/s
01:001%15m/s
02:000.6%13m/s
03:0011%13m/s
04:0018%12m/s
05:0025%10m/s
06:0018%7.7m/s
07:0022%6m/s
08:0014%6.7m/s
09:0014%8.4m/s
10:007%7.4m/s
11:0011%9.3m/s
12:0015%9.9m/s
13:0031%10m/s
14:0027%10m/s
15:0027%9.7m/s
16:0028%9.4m/s
17:0022%9.2m/s
18:0022%8.2m/s
19:0022%6.5m/s
20:0016%4.5m/s
21:0017%2.5m/s
22:0019%1.5m/s
23:0019%1.5m/s
Mon, Apr 6
24:0017%1.9m/s
01:0017%2.2m/s
02:0017%2.3m/s
03:0017%2.2m/s
04:0017%2.3m/s
05:0017%2.1m/s
06:0017%2.1m/s
07:0017%2.1m/s
08:0022%2m/s
09:0030%2.3m/s
10:0033%3.1m/s
11:0038%3.4m/s
12:0039%3.8m/s
13:0044%4.4m/s
14:0034%4.7m/s
15:0033%5.3m/s
16:0029%5.3m/s
17:0031%3.7m/s
18:0031%3.3m/s
19:0020%2.7m/s
20:0017%2.4m/s
21:0017%2.5m/s
22:0017%2.5m/s
23:0018%2.5m/s
Tue, Apr 7
24:0021%2.5m/s
01:0017%2.5m/s
02:0018%3.3m/s
03:0032%4.2m/s
04:0033%5.1m/s
05:0029%6.3m/s
06:003.5%7.6m/s
07:003.9%8.9m/s
08:003.2%8.3m/s
09:002.9%7.6m/s
10:000%6.9m/s
11:000%6.1m/s
12:000%5.2m/s
13:000%4.4m/s
14:000%4m/s
15:000%3.6m/s
16:000%3.2m/s
17:000%3.2m/s
18:000%3.2m/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
Sat, Apr 4 Sunrise 06:35 Sunset 19:51
20:00
5.3°C 6.3°C 8.4°C - 100% 0.21kPa
21:00
6.1°C 6.3°C 8.1°C - 100% 0.14kPa
22:00
3.2°C 6.4°C 5.6°C - 77% 0.14kPa
23:00
2.5°C 6.3°C 5.2°C - 61% 0.15kPa
Sun, Apr 5 Sunrise 06:35 Sunset 19:51
24:00
3.1°C 6.2°C 5°C - 100% 0.11kPa
01:00
3.3°C 6.1°C 5°C - 100% 0.1kPa
02:00
3.3°C 6°C 4.3°C - 97% 0.06kPa
03:00
0.5°C 5.8°C 2.2°C - 92% 0.08kPa
04:00
-0.3°C 5.6°C 2.1°C - 48% 0.11kPa
05:00
-0.7°C 5.4°C 1.8°C - 12% 0.12kPa
06:00
-0.6°C 5.1°C 1.7°C - 46% 0.11kPa
07:00
-0.4°C 4.9°C 1.6°C - 15% 0.09kPa
08:00
0.2°C 4.8°C 2.6°C - 99% 0.11kPa
09:00
0.6°C 4.7°C 3.2°C - 100% 0.13kPa
10:00
2.6°C 4.7°C 2.9°C - 100% 0.02kPa
11:00
1.2°C 4.6°C 3°C - 80% 0.09kPa
12:00
1.1°C 4.6°C 3.8°C - 68% 0.14kPa
13:00
0.2°C 4.7°C 4.6°C - 43% 0.23kPa
14:00
0.8°C 4.8°C 4.8°C - 86% 0.22kPa
15:00
0.7°C 5°C 4.7°C - 96% 0.21kPa
16:00
0.5°C 5°C 4.8°C - 75% 0.23kPa
17:00
0.6°C 5.1°C 4.4°C - 83% 0.2kPa
18:00
0.4°C 5°C 3.8°C - 100% 0.17kPa
19:00
-0.2°C 4.9°C 3°C - 85% 0.15kPa
20:00
-0.8°C 4.7°C 1.7°C - 99% 0.11kPa
21:00
-1.2°C 4.5°C 0.45°C - 100% 0.07kPa
22:00
-1.6°C 4.5°C -0.04°C - 100% 0.07kPa
23:00
-1.8°C 4.5°C -0.07°C - 100% 0.07kPa
Mon, Apr 6 Sunrise 06:33 Sunset 19:53
24:00
-1.7°C 4.5°C -0.05°C - 100% 0.07kPa
01:00
-1.5°C 4.5°C -0.05°C - 94% 0.06kPa
02:00
-1.6°C 4.5°C -0.24°C - 100% 0.06kPa
03:00
-1.5°C 4.5°C -0.21°C - 91% 0.05kPa
04:00
-1.4°C 4.5°C -0.13°C - 95% 0.05kPa
05:00
-1.4°C 4.4°C -0.06°C - 89% 0.06kPa
06:00
-1.4°C 4.3°C 0.15°C - 100% 0.07kPa
07:00
-1°C 4°C 0.92°C - 100% 0.09kPa
08:00
-0.1°C 4°C 2.3°C - 100% 0.12kPa
09:00
0.7°C 4°C 4°C - 100% 0.17kPa
10:00
0.6°C 4°C 5.4°C - 98% 0.26kPa
11:00
0.3°C 4°C 6.6°C - 79% 0.35kPa
12:00
0.7°C 4°C 7.9°C - 47% 0.42kPa
13:00
2°C 4°C 9.1°C - 20% 0.45kPa
14:00
3°C 4°C 9.8°C - 72% 0.45kPa
15:00
4°C 4°C 10°C - 88% 0.43kPa
16:00
4.8°C 4.2°C 10°C - 100% 0.38kPa
17:00
5.8°C 4.4°C 9.5°C - 100% 0.27kPa
18:00
5.8°C 4.7°C 9.2°C - 100% 0.24kPa
19:00
5.5°C 4.9°C 7.8°C - 100% 0.16kPa
20:00
4.6°C 4.9°C 6.2°C - 100% 0.1kPa
21:00
3.9°C 4.9°C 5.4°C - 99% 0.09kPa
22:00
3.6°C 4.9°C 5°C - 91% 0.08kPa
23:00
3.5°C 4.8°C 4.8°C - 78% 0.07kPa
Tue, Apr 7 Sunrise 06:30 Sunset 19:54
24:00
3.2°C 4.7°C 4.5°C - 58% 0.07kPa
01:00
3.2°C 4.6°C 4.4°C - 97% 0.07kPa
02:00
3.7°C 4.8°C 6.2°C - 83% 0.15kPa
03:00
4.1°C 5.1°C 8°C - 69% 0.26kPa
04:00
4.3°C 5.3°C 9.9°C - 55% 0.39kPa
05:00
5.1°C 5.7°C 11°C - 44% 0.44kPa
06:00
5.9°C 6.1°C 12°C - 33% 0.5kPa
07:00
6.7°C 6.6°C 14°C - 22% 0.57kPa
08:00
7.6°C 7.1°C 14°C - 46% 0.58kPa
09:00
8.4°C 7.6°C 15°C - 70% 0.6kPa
10:00
9.3°C 8.1°C 16°C - 94% 0.61kPa
11:00
9.1°C 8.3°C 15°C - 95% 0.51kPa
12:00
8.8°C 8.6°C 14°C - 96% 0.42kPa
13:00
8.6°C 8.9°C 13°C - 97% 0.34kPa
14:00
7.9°C 8.9°C 12°C - 96% 0.29kPa
15:00
7.3°C 8.9°C 11°C - 95% 0.25kPa
16:00
6.6°C 8.9°C 9.5°C - 95% 0.21kPa
17:00
6.4°C 8.8°C 9°C - 83% 0.18kPa
18:00
6.2°C 8.7°C 8.4°C - 71% 0.16kPa
19:00
6°C 8.6°C 7.9°C - 60% 0.13kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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