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Rule Morning Frost

Wast Water - Morning Frost - Lake District

Wasdale Head, 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 93% failing
Time Window 88% failing

Currently

Real-time conditions
Soil Temperature8.6°C
Dew Point6.2°C (moderate dew point)
Wind Speed3.8m/s (calm conditions)
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
08:000%2.2m/s
09:000%2.1m/s
10:000%2.3m/s
11:000%2.3m/s
12:000%2.2m/s
13:000%2.6m/s
14:000%2.5m/s
15:000%2.6m/s
16:000%2.1m/s
17:000%2.5m/s
18:000%2.2m/s
19:000%1.7m/s
20:000%1.6m/s
21:000%1.1m/s
22:000%1.2m/s
23:000%1.7m/s
Thu, Apr 9
24:000%2m/s
01:000%2.5m/s
02:000%2.8m/s
03:000%2.7m/s
04:000%2.8m/s
05:000%3.3m/s
06:000%3.6m/s
07:000%3.3m/s
08:000%3.6m/s
09:000%3.8m/s
10:000%3.3m/s
11:000%4.3m/s
12:000%7.2m/s
13:000%7.9m/s
14:000.6%5.8m/s
15:001.3%6.5m/s
16:002.7%7.5m/s
17:002.1%8m/s
18:004.1%8.1m/s
19:002.5%8.4m/s
20:000.6%8.2m/s
21:000.6%6.7m/s
22:001.1%7.1m/s
23:0011%7.6m/s
Fri, Apr 10
24:0012%8.2m/s
01:0012%7.3m/s
02:0015%5.7m/s
03:0011%5.8m/s
04:0019%3.9m/s
05:0021%1.8m/s
06:0019%0.81m/s
07:0019%1.3m/s
08:0022%0.89m/s
09:0030%1.6m/s
10:0033%2.1m/s
11:0033%2.8m/s
12:0035%3.9m/s
13:0033%4.8m/s
14:0033%5.4m/s
15:0031%6.1m/s
16:0031%6.5m/s
17:0032%7m/s
18:0028%7.6m/s
19:0022%7.4m/s
20:0022%8.3m/s
21:0011%8.8m/s
22:007%6.2m/s
23:007%8.1m/s
Sat, Apr 11
24:0011%10m/s
01:007%8.8m/s
02:007%7.1m/s
03:007%6m/s
04:0011%3.2m/s
05:0015%1.7m/s
06:0013%1.8m/s
07:0021%0.45m/s
08:0023%0.62m/s
09:0021%1.7m/s
10:0019%2.1m/s
11:0021%2.9m/s
12:0037%5.7m/s
13:0034%7m/s
14:0026%8.6m/s
15:0023%10m/s
16:0022%12m/s
17:0014%12m/s
18:0014%12m/s
19:0014%13m/s
20:0014%12m/s
21:0014%11m/s
22:0014%10m/s
23:0014%11m/s
Sun, Apr 12
24:0014%11m/s
01:0011%11m/s
02:0011%12m/s
03:0011%14m/s
04:0011%15m/s
05:0014%15m/s
06:0014%14m/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 20:04
09:00
6.2°C 8.6°C 6.5°C - 100% 0.02kPa
10:00
6.6°C 8.5°C 6.8°C - 100% 0.01kPa
11:00
6.6°C 8.4°C 7°C - 100% 0.03kPa
12:00
5.4°C 8.2°C 6.4°C - 100% 0.07kPa
13:00
4.5°C 8.1°C 5.7°C - 100% 0.07kPa
14:00
3.2°C 7.8°C 3.7°C - 100% 0.03kPa
15:00
2.3°C 7.6°C 4.4°C - 100% 0.11kPa
16:00
1.5°C 7.5°C 5.4°C - 66% 0.22kPa
17:00
1.6°C 7.4°C 5.1°C - 90% 0.19kPa
18:00
0.7°C 7.2°C 4.8°C - 5% 0.22kPa
19:00
0.6°C 7°C 4.2°C - 55% 0.19kPa
20:00
2.6°C 6.7°C 2.9°C - 100% 0.02kPa
21:00
2.1°C 6.4°C 3°C - 100% 0.04kPa
22:00
2.1°C 6.1°C 3.3°C - 76% 0.06kPa
23:00
1.9°C 5.9°C 3.1°C - 88% 0.06kPa
Fri, Apr 10 Sunrise 06:26 Sunset 20:04
24:00
1.5°C 5.6°C 2.9°C - 80% 0.07kPa
01:00
1°C 5.4°C 2.6°C - 65% 0.08kPa
02:00
0.5°C 5.2°C 2.2°C - 53% 0.08kPa
03:00
-0.2°C 4.9°C 1.7°C - 83% 0.09kPa
04:00
-0.4°C 4.6°C 1.5°C - 50% 0.09kPa
05:00
-1°C 4.4°C 0.26°C - 52% 0.06kPa
06:00
-1.1°C 4.3°C 0.15°C - 100% 0.05kPa
07:00
-0.8°C 4.2°C 0.96°C - 100% 0.08kPa
08:00
-0.6°C 4°C 2.1°C - 100% 0.12kPa
09:00
-0.6°C 4.1°C 3.1°C - 100% 0.18kPa
10:00
-1°C 4.2°C 3.9°C - 100% 0.24kPa
11:00
-1.2°C 4.3°C 4.4°C - 100% 0.28kPa
12:00
-1.5°C 4.4°C 5.1°C - 100% 0.33kPa
13:00
-1.7°C 4.5°C 5.5°C - 100% 0.36kPa
14:00
-1.8°C 4.9°C 5.8°C - 100% 0.38kPa
15:00
-1.6°C 5.2°C 5.9°C - 99% 0.39kPa
16:00
-1.5°C 5.4°C 6°C - 94% 0.39kPa
17:00
-0.7°C 5.6°C 5.9°C - 79% 0.35kPa
18:00
0.7°C 5.6°C 5.8°C - 77% 0.28kPa
19:00
1°C 5.6°C 4.8°C - 100% 0.2kPa
20:00
1°C 5.5°C 4.7°C - 100% 0.2kPa
21:00
2.5°C 5.4°C 3.5°C - 100% 0.06kPa
22:00
2.7°C 5.2°C 3.1°C - 100% 0.02kPa
23:00
2.4°C 5.1°C 3.3°C - 99% 0.05kPa
Sat, Apr 11 Sunrise 06:23 Sunset 20:06
24:00
1.9°C 4.9°C 3.5°C - 100% 0.08kPa
01:00
2.5°C 4.8°C 3.5°C - 100% 0.06kPa
02:00
2.9°C 4.7°C 3.6°C - 100% 0.04kPa
03:00
3.5°C 4.7°C 4.1°C - 100% 0.03kPa
04:00
2.2°C 4.6°C 2.2°C - 100% 0kPa
05:00
0.9°C 4.4°C 0.89°C - 100% 0kPa
06:00
0.3°C 4.2°C 0.43°C - 100% 0.01kPa
07:00
-0.9°C 4.1°C 0.25°C - 100% 0.05kPa
08:00
-0.9°C 3.9°C 0.65°C - 100% 0.07kPa
09:00
-0.5°C 3.9°C 1.3°C - 100% 0.08kPa
10:00
0°C 3.8°C 1.8°C - 100% 0.08kPa
11:00
0.2°C 3.9°C 3.1°C - 70% 0.14kPa
12:00
0.5°C 4°C 3.8°C - 5% 0.17kPa
13:00
0.2°C 4.1°C 4.4°C - 27% 0.22kPa
14:00
0.9°C 4.5°C 4.7°C - 51% 0.2kPa
15:00
1.6°C 4.9°C 5.1°C - 76% 0.19kPa
16:00
2.3°C 5.3°C 5.4°C - 100% 0.18kPa
17:00
2.5°C 5.2°C 5.3°C - 100% 0.16kPa
18:00
2.7°C 5.1°C 5.2°C - 100% 0.14kPa
19:00
2.9°C 5.1°C 5.1°C - 100% 0.13kPa
20:00
3.4°C 5°C 5.5°C - 99% 0.13kPa
21:00
3.9°C 5°C 5.9°C - 99% 0.12kPa
22:00
4.4°C 5°C 6.4°C - 98% 0.12kPa
23:00
4.3°C 5°C 6.1°C - 96% 0.11kPa
Sun, Apr 12 Sunrise 06:21 Sunset 20:08
24:00
4.2°C 5°C 5.9°C - 95% 0.11kPa
01:00
4.1°C 5°C 5.7°C - 93% 0.1kPa
02:00
4.3°C 5.1°C 5.9°C - 95% 0.1kPa
03:00
4.5°C 5.1°C 6.1°C - 98% 0.1kPa
04:00
4.8°C 5.2°C 6.3°C - 100% 0.1kPa
05:00
4.8°C 5.3°C 6.7°C - 100% 0.12kPa
06:00
4.8°C 5.4°C 7.1°C - 100% 0.15kPa
07:00
4.8°C 5.5°C 7.5°C - 100% 0.18kPa
08:00
4.7°C 5.6°C 7.6°C - 100% 0.18kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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