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Rule Morning Frost

Björkliden - Morning Frost - Swedish Lapland

Björkliden, Norrbotten, Sweden

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
Time Window 90% failing
Wind Speed 83% failing

Currently

Real-time conditions
Soil Temperature11.9°C
Dew Point7.6°C (moderate dew point)
Wind Speed6.0m/s (moderate winds)
Cloud Cover62%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Stockholm

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 extreme arctic frost conditions that transform Swedish Lapland into a frozen wonderland. We combine temperature, humidity, wind, and snow data to predict optimal conditions for photographing the region's spectacular frost phenomena.

Swedish Lapland experiences frost conditions as extreme as neighboring Finland, with temperatures regularly dropping below -25°C from December through February. The region's vast frozen lakes, frost-covered birch forests, and ice formations create otherworldly winter landscapes. The famous Abisko microclimate means frost conditions often coincide with clear skies—ideal for photography.

What makes Swedish Lapland special for frost photography:

  • Frozen Torneträsk - Sweden's sixth largest lake freezes solid, creating vast ice plains
  • Abisko clarity - The Blue Hole microclimate provides clear skies for photographing frost
  • Birch forest frost - Frost-covered mountain birch create delicate white forests
  • Ice architecture - The ICEHOTEL and frozen Torne River offer unique frost subjects

Lake Torneträsk freezes completely by midwinter, creating an otherworldly frozen seascape stretching to the horizon. The pressure ridges and ice formations along the shore provide dramatic foreground elements. The mountain birch forests around Abisko become ethereal frost galleries—each delicate branch outlined in white against blue arctic twilight. The Torne River near Jukkasjärvi provides ice harvesting opportunities to photograph—massive blocks cut for the ICEHOTEL construction. At Abisko, the microclimate advantage means you can photograph frost phenomena under clear skies more reliably than elsewhere in Lapland. The combination of extreme cold and the region's unique light makes for spectacular blue hour frost photography.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 80 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Stockholm
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sun, May 24
06:000%4.2m/s
07:000%5m/s
08:000%5.6m/s
09:000%5.4m/s
10:000%5.3m/s
11:000%4.5m/s
12:000%5.9m/s
13:000%5.7m/s
14:000%5.8m/s
15:000%6m/s
16:000%6.2m/s
17:000%6.6m/s
18:000%5.8m/s
19:000%6.3m/s
20:000%6.2m/s
21:000%6.2m/s
22:000%6.8m/s
23:000%6.4m/s
Mon, May 25
24:000%6.8m/s
01:000%7.5m/s
02:000%7.4m/s
03:000%7.1m/s
04:000%7m/s
05:000%6.9m/s
06:000%6.6m/s
07:000%6.9m/s
08:000%6.7m/s
09:000%7m/s
10:000%7.3m/s
11:000%6.9m/s
12:000%6.6m/s
13:000%6.1m/s
14:000%5.8m/s
15:000%5.5m/s
16:000%6m/s
17:000%5.7m/s
18:000%4.7m/s
19:000%4.1m/s
20:000%3.8m/s
21:000%2.7m/s
22:000%2.2m/s
23:000%2.2m/s
Tue, May 26
24:000%2m/s
01:000%1.8m/s
02:000%1.5m/s
03:000%1.4m/s
04:004.9%1.3m/s
05:004.9%0.92m/s
06:005%0.74m/s
07:005%0.62m/s
08:003.4%0.3m/s
09:000%1.1m/s
10:000%1.6m/s
11:000%2m/s
12:000%2.1m/s
13:000%1.9m/s
14:000%1.8m/s
15:000%1m/s
16:000%0.93m/s
17:000%0.55m/s
18:000%0.64m/s
19:000%1.2m/s
20:000%1.6m/s
21:000%1.8m/s
22:002.6%2.1m/s
23:003.4%2.3m/s
Wed, May 27
24:003.7%3.1m/s
01:003.5%4m/s
02:003%4.8m/s
03:002.8%5.1m/s
04:002.6%5.3m/s
05:002.4%5.5m/s
06:000%5.5m/s
07:000%5.4m/s
08:000%5.4m/s
09:000%5.3m/s
10:000%5.2m/s
11:000%5.1m/s
12:000%5.2m/s
13:000%5.3m/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/Stockholm
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, May 24 Sunrise 02:36 Sunset 22:36
15:00
7.6°C 12°C 15°C - 62% 0.67kPa
16:00
7.1°C 12°C 16°C - 72% 0.8kPa
17:00
6.4°C 12°C 15°C - 53% 0.78kPa
18:00
5.5°C 12°C 15°C - 14% 0.83kPa
19:00
5.3°C 12°C 14°C - 5% 0.72kPa
20:00
5.4°C 12°C 12°C - 5% 0.54kPa
21:00
5.5°C 12°C 11°C - 5% 0.44kPa
22:00
4.7°C 12°C 9.8°C - 5% 0.36kPa
23:00
4°C 11°C 8.5°C - 27% 0.3kPa
Mon, May 25 Sunrise 02:36 Sunset 22:36
24:00
3.6°C 11°C 8.5°C - 65% 0.32kPa
01:00
1.2°C 11°C 7.5°C - 95% 0.37kPa
02:00
1.1°C 10°C 6.9°C - 92% 0.34kPa
03:00
2.3°C 9.9°C 6.8°C - 87% 0.26kPa
04:00
3.1°C 9.5°C 6.7°C - 51% 0.22kPa
05:00
2°C 9.2°C 7.3°C - 84% 0.32kPa
06:00
1.5°C 9°C 7.9°C - 93% 0.38kPa
07:00
1.3°C 8.9°C 8.6°C - 100% 0.45kPa
08:00
1.1°C 8.9°C 9.4°C - 93% 0.51kPa
09:00
0.4°C 9.1°C 11°C - 30% 0.65kPa
10:00
-0.9°C 9.3°C 11°C - 74% 0.78kPa
11:00
-1.4°C 9.6°C 12°C - 28% 0.87kPa
12:00
-1.5°C 9.9°C 13°C - 97% 0.95kPa
13:00
-1.8°C 10°C 13°C - 95% 0.93kPa
14:00
-2.3°C 10°C 13°C - 100% 0.98kPa
15:00
-2.6°C 11°C 13°C - 100% 1kPa
16:00
-3.3°C 11°C 14°C - 99% 1.1kPa
17:00
-3.2°C 11°C 14°C - 81% 1.1kPa
18:00
-2.3°C 11°C 13°C - 62% 1kPa
19:00
-1.6°C 11°C 13°C - 50% 0.94kPa
20:00
-1.7°C 11°C 12°C - 35% 0.82kPa
21:00
-1.1°C 11°C 9.8°C - 34% 0.64kPa
22:00
-0.8°C 11°C 7.6°C - 5% 0.47kPa
23:00
-0.7°C 10°C 6.3°C - 5% 0.38kPa
Tue, May 26 Sunrise 02:33 Sunset 22:40
24:00
-0.7°C 9.6°C 5.5°C - 5% 0.32kPa
01:00
-0.8°C 9°C 4.8°C - 5% 0.28kPa
02:00
-0.7°C 8.6°C 4.3°C - 0% 0.25kPa
03:00
-0.6°C 8.1°C 3.9°C - 0% 0.22kPa
04:00
-0.3°C 7.7°C 4.4°C - 0% 0.24kPa
05:00
0°C 7.4°C 6°C - 4% 0.32kPa
06:00
-0.3°C 7.4°C 7.6°C - 5% 0.44kPa
07:00
-0.4°C 7.6°C 9.3°C - 5% 0.58kPa
08:00
-0.5°C 8°C 11°C - 80% 0.71kPa
09:00
-0.6°C 8.5°C 12°C - 97% 0.78kPa
10:00
0.1°C 8.9°C 12°C - 100% 0.77kPa
11:00
1.1°C 9.1°C 11°C - 100% 0.64kPa
12:00
2.2°C 9.3°C 11°C - 100% 0.61kPa
13:00
2.6°C 9.6°C 11°C - 100% 0.6kPa
14:00
2.9°C 9.8°C 12°C - 100% 0.61kPa
15:00
3.2°C 9.9°C 11°C - 100% 0.58kPa
16:00
3.6°C 10°C 12°C - 100% 0.61kPa
17:00
4°C 10°C 11°C - 100% 0.53kPa
18:00
4.6°C 10°C 10°C - 100% 0.41kPa
19:00
5.7°C 10°C 9.6°C - 100% 0.28kPa
20:00
6°C 10°C 9°C - 100% 0.22kPa
21:00
4.6°C 9°C 7.6°C - 69% 0.19kPa
22:00
3.2°C 7.9°C 6.1°C - 37% 0.17kPa
23:00
1.8°C 6.8°C 4.6°C - 6% 0.16kPa
Wed, May 27 Sunrise 02:29 Sunset 22:44
24:00
1.3°C 6.8°C 5.8°C - 33% 0.25kPa
01:00
0.6°C 6.8°C 7°C - 61% 0.36kPa
02:00
-0.4°C 6.8°C 8.2°C - 88% 0.49kPa
03:00
-0.9°C 7.1°C 9.3°C - 80% 0.6kPa
04:00
-1.5°C 7.5°C 10°C - 72% 0.72kPa
05:00
-2.4°C 7.8°C 12°C - 64% 0.86kPa
06:00
-1.8°C 8.2°C 12°C - 74% 0.87kPa
07:00
-1.2°C 8.6°C 12°C - 84% 0.88kPa
08:00
-0.6°C 9.1°C 13°C - 94% 0.89kPa
09:00
-0.7°C 9.4°C 13°C - 95% 0.92kPa
10:00
-0.7°C 9.7°C 13°C - 97% 0.95kPa
11:00
-0.8°C 10°C 14°C - 98% 0.98kPa
12:00
1.2°C 10°C 12°C - 80% 0.78kPa
13:00
2.6°C 10°C 11°C - 62% 0.6kPa
14:00
3.7°C 10°C 10°C - 43% 0.44kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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