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Rule Morning Frost

Buttermere - Morning Frost - Lake District

Workington, 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 88% failing

Currently

Real-time conditions
Soil Temperature9725.9°C
Dew Point8.5°C (moderate dew point)
Wind Speed5.2m/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 tracks the conditions that create the Lake District's enchanting frost photography opportunities. We combine temperature, dewpoint, wind, and humidity data to predict when hoar frost will transform England's most romantic landscapes into glittering winter scenes.

The Lake District's combination of lakes, tarns, and sheltered valleys creates ideal conditions for heavy frost formation. England's naturally high humidity combined with calm, cold nights produces thick hoar frost deposits that coat every surface. The region's intimate scale means frost-covered scenes retain the romantic quality that has drawn artists here for centuries.

What makes the Lake District special for frost photography:

  • Frozen tarns - Small tarns like Tarn Hows freeze solid, creating pristine ice skating scenes
  • Frosted fells - Grasses and bracken on fell sides become forests of ice crystals
  • Lake shore ice - Derwentwater and Windermere develop fascinating ice formations along their shores
  • Romantic compositions - Frost-covered stone walls, bare trees, and winter light evoke Wordsworth's poetry

Tarn Hows becomes a winter jewel when frozen and frost-covered—the small tarn surrounded by frosted woodland creates postcard-perfect scenes. Derwentwater's shores develop intricate ice patterns, particularly in sheltered bays like the view from Friars Crag. Higher tarns like Blea Tarn freeze reliably and hold frost longer, often remaining photogenic well into morning. Frosted bracken on the lower fells catches golden morning light beautifully. The key is arriving at dawn after clear, calm nights—our forecast identifies these conditions and predicts how long frost will persist after sunrise.

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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
Wed, Apr 8
02:000%0.78m/s
03:000%1.4m/s
04:000%0.9m/s
05:000%0.92m/s
06:000%1.5m/s
07:000%0.96m/s
08:000%1.5m/s
09:000%2.4m/s
10:000%3.7m/s
11:000%4.7m/s
12:000%4.7m/s
13:000%5.2m/s
14:000%5.3m/s
15:000%5.3m/s
16:000%5.2m/s
17:000%5.1m/s
18:000%4.9m/s
19:000%4.5m/s
20:000%4m/s
21:000%3.6m/s
22:000%3.4m/s
23:000%3.2m/s
Thu, Apr 9
24:000%4.5m/s
01:000%4.8m/s
02:000%5.2m/s
03:000%5.7m/s
04:000%6.5m/s
05:000%6.1m/s
06:000%7.3m/s
07:000%9.2m/s
08:000%8.8m/s
09:000%8.8m/s
10:000%9.6m/s
11:000%7.8m/s
12:000%9.7m/s
13:000%11m/s
14:000%8.6m/s
15:000%9.6m/s
16:000%9.7m/s
17:000%9.7m/s
18:000%10m/s
19:000%11m/s
20:000%10m/s
21:000%8.2m/s
22:000%8.6m/s
23:000%8.4m/s
Fri, Apr 10
24:000%9m/s
01:000%7.8m/s
02:000%8.3m/s
03:000%7.8m/s
04:000%7.7m/s
05:000%6.9m/s
06:000%5.8m/s
07:000%5.4m/s
08:000%3.6m/s
09:000%3.3m/s
10:000%3.2m/s
11:000%4.5m/s
12:000%5.2m/s
13:000%6.9m/s
14:000%7.5m/s
15:000%8.1m/s
16:000%7.6m/s
17:000%7.6m/s
18:000%8.2m/s
19:000%8.1m/s
20:000%8.9m/s
21:000%9.2m/s
22:000%11m/s
23:000%10m/s
Sat, Apr 11
24:000%14m/s
01:000%14m/s
02:000%14m/s
03:000%15m/s
04:000%9.7m/s
05:000%12m/s
06:000%12m/s
07:000%13m/s
08:000%12m/s
09:000%12m/s
10:0042%11m/s
11:0034%12m/s
12:0028%12m/s
13:0027%12m/s
14:0014%12m/s
15:0014%12m/s
16:007%13m/s
17:0011%13m/s
18:0011%13m/s
19:0014%14m/s
20:0014%13m/s
21:0014%13m/s
22:0014%13m/s
23:0015%11m/s
Sun, Apr 12
24:0018%10m/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
Thu, Apr 9 Sunrise 06:26 Sunset 20:05
02:00
8.5°C 9726°C 9.5°C - 100% 0.07kPa
03:00
8.7°C 9726°C 9.4°C - 100% 0.06kPa
04:00
8.6°C 9726°C 9.2°C - 100% 0.05kPa
05:00
8.3°C 9726°C 9.1°C - 100% 0.06kPa
06:00
8.3°C 9726°C 8.9°C - 100% 0.04kPa
07:00
7.3°C 9726°C 8.6°C - 100% 0.09kPa
08:00
6.9°C 9726°C 8°C - 100% 0.08kPa
09:00
7.3°C 9726°C 7.9°C - 100% 0.05kPa
10:00
7.6°C 9726°C 8.1°C - 100% 0.04kPa
11:00
5.2°C 9726°C 8.1°C - 100% 0.2kPa
12:00
5.1°C 9726°C 7.3°C - 100% 0.14kPa
13:00
4.3°C 9726°C 7.3°C - 100% 0.19kPa
14:00
3.5°C 9726°C 7.4°C - 100% 0.24kPa
15:00
3.4°C 9726°C 7.1°C - 100% 0.23kPa
16:00
2.9°C 9726°C 7.1°C - 60% 0.25kPa
17:00
2.3°C 9726°C 7.4°C - 83% 0.31kPa
18:00
2°C 9726°C 7.5°C - 8% 0.33kPa
19:00
2.4°C 9726°C 7.1°C - 5% 0.28kPa
20:00
3.8°C 9726°C 6°C - 95% 0.13kPa
21:00
2.5°C 9726°C 6.1°C - 80% 0.21kPa
22:00
2.7°C 9726°C 6.2°C - 84% 0.2kPa
23:00
2.3°C 9726°C 6°C - 98% 0.21kPa
Fri, Apr 10 Sunrise 06:26 Sunset 20:05
24:00
2°C 9726°C 5.8°C - 73% 0.21kPa
01:00
1.3°C 9726°C 5.6°C - 5% 0.24kPa
02:00
1.1°C 9726°C 5.4°C - 5% 0.23kPa
03:00
0.8°C 9726°C 5.4°C - 8% 0.25kPa
04:00
0.5°C 9726°C 5.4°C - 4% 0.26kPa
05:00
0.3°C 9726°C 5.3°C - 6% 0.27kPa
06:00
0.2°C 9726°C 5.3°C - 25% 0.27kPa
07:00
0.1°C 9726°C 5.2°C - 99% 0.27kPa
08:00
0.1°C 9726°C 5.4°C - 100% 0.28kPa
09:00
0.1°C 9726°C 5.7°C - 100% 0.3kPa
10:00
-0.2°C 9726°C 5.9°C - 95% 0.33kPa
11:00
-0.2°C 9726°C 6.3°C - 100% 0.36kPa
12:00
-0.5°C 9726°C 6.6°C - 100% 0.39kPa
13:00
-0.2°C 9726°C 6.9°C - 100% 0.39kPa
14:00
0.1°C 9726°C 7.1°C - 99% 0.39kPa
15:00
-0.4°C 9726°C 7.2°C - 96% 0.42kPa
16:00
-0.1°C 9726°C 7.6°C - 68% 0.44kPa
17:00
1.1°C 9726°C 7.9°C - 62% 0.4kPa
18:00
1.7°C 9726°C 7.9°C - 52% 0.37kPa
19:00
1.7°C 9726°C 7.6°C - 93% 0.35kPa
20:00
2.1°C 9726°C 7.3°C - 100% 0.31kPa
21:00
2.1°C 9726°C 7.1°C - 95% 0.3kPa
22:00
2.5°C 9726°C 6.5°C - 88% 0.24kPa
23:00
2.4°C 9726°C 6.1°C - 100% 0.22kPa
Sat, Apr 11 Sunrise 06:24 Sunset 20:07
24:00
3.1°C 9726°C 5.6°C - 100% 0.15kPa
01:00
3.7°C 9726°C 5.7°C - 100% 0.12kPa
02:00
4°C 9726°C 6.7°C - 100% 0.17kPa
03:00
4.7°C 9726°C 7.1°C - 100% 0.15kPa
04:00
2.9°C 9726°C 5.9°C - 100% 0.17kPa
05:00
3.1°C 9726°C 6.6°C - 100% 0.21kPa
06:00
2.6°C 9726°C 6.9°C - 5% 0.26kPa
07:00
2.7°C 9726°C 6.3°C - 61% 0.21kPa
08:00
2.3°C 6486°C 6.4°C - 42% 0.24kPa
09:00
2°C 3246°C 6.4°C - 23% 0.26kPa
10:00
1.6°C 5.7°C 6.5°C - 4% 0.28kPa
11:00
1.7°C 5.7°C 6.4°C - 35% 0.27kPa
12:00
1.8°C 5.7°C 6.2°C - 67% 0.25kPa
13:00
1.9°C 5.8°C 6.1°C - 99% 0.24kPa
14:00
2.9°C 5.7°C 5.8°C - 99% 0.17kPa
15:00
3.8°C 5.6°C 5.6°C - 100% 0.11kPa
16:00
4.6°C 5.5°C 5.3°C - 100% 0.04kPa
17:00
4.7°C 5.5°C 5.8°C - 100% 0.07kPa
18:00
4.8°C 5.5°C 6.3°C - 100% 0.1kPa
19:00
4.8°C 5.5°C 6.8°C - 100% 0.13kPa
20:00
4.8°C 5.5°C 6.7°C - 98% 0.12kPa
21:00
4.8°C 5.6°C 6.7°C - 97% 0.12kPa
22:00
4.8°C 5.6°C 6.6°C - 95% 0.12kPa
23:00
4.4°C 5.5°C 6.4°C - 71% 0.12kPa
Sun, Apr 12 Sunrise 06:22 Sunset 20:09
24:00
4°C 5.5°C 6.1°C - 47% 0.13kPa
01:00
3.6°C 5.5°C 5.9°C - 22% 0.14kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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