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Rule Fog Hunter

Fog Hunter Forecast for Ivalo, Finnish Lapland

Ivalo, Lapland, Finland

Ivalo combines the winding Ivalojoki River with low pine-covered hills, and serves as a practical base for Lake Inari’s wider ice landscapes.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread3.5°C
Visibility24135 (Clear)
Relative Humidity79%
Wind Speed5.6m/s (moderate winds)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (81-hour forecast)

  • Fog Probability100% of hours

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Fog Hunter conditions across Finnish Lapland. The requirements and hourly values below show how those signals apply at Ivalo.

Explore Fog Hunter conditions across Finnish Lapland →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Ivalo during the last 365 days.

Last 30 days
0
recorded matching windows
Last 90 days
6
recorded matching windows · 64% average confidence
Last 365 days
8
recorded matching windows · 69% average confidence

Only 8 completed matches are recorded in the last 365 days—insufficient history to identify a reliable typical start time or month.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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81-hour requirements breakdown

When available, the detailed table below covers only the stated 81-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour
0matching hours in the next 81 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 75.0%
Tue, Aug 18
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Aug 19
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Thu, Aug 20
24:000%
01:000%
02:0055%
03:0055%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Fri, Aug 21
24:0056%
01:0049%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:0024%
13:0024%
14:000%
15:000%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fog 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/Helsinki
Clear Sky Probability (Ensemble)
%
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Solar Elevation
°
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Tue, Aug 18 Sunrise 04:35 Sunset 21:48
17:00
0% 9.1°C 0.01mm 79% 0cm 24° 13°C 0mm 0.31kPa 24135m 6.8m/s 5.6m/s
18:00
0% 9.1°C 0mm 78% 0cm 19° 13°C 0mm 0.32kPa 24135m 6.8m/s 5.4m/s
19:00
0% 9.3°C 0mm 81% 0cm 13° 13°C 0mm 0.27kPa 24135m 7.4m/s 4.8m/s
20:00
0% 9.4°C 0mm 83% 0cm 8° 12°C 0mm 0.24kPa 24134m 8.3m/s 4.7m/s
21:00
0% 9.5°C 0mm 84% 0cm 3.1° 12°C 0mm 0.22kPa 24135m 9m/s 4.9m/s
22:00 ☾
0% 9.9°C 0mm 88% 0cm -1.4° 12°C 0mm 0.16kPa 24135m 9.9m/s 5.5m/s
23:00 ☾
1% 10°C 0mm 92% 0cm -5° 11°C 0mm 0.11kPa 24134m 10m/s 5.9m/s
Wed, Aug 19 Sunrise 04:35 Sunset 21:48
24:00 ☾
1% 10°C 0mm 92% 0cm -7.4° 11°C 0mm 0.11kPa 24134m 9.1m/s 5.4m/s
01:00 ☾
1% 9.5°C 0mm 88% 0cm -8.4° 11°C 0mm 0.16kPa 24135m 8.3m/s 4.7m/s
02:00 ☾
0% 8.8°C 0mm 84% 0cm -8° 11°C 0mm 0.21kPa 24135m 8.1m/s 4.5m/s
03:00 ☾
0% 8.5°C 0mm 83% 0cm -6.3° 11°C 0mm 0.22kPa 24134m 8.1m/s 4.6m/s
04:00 ☾
0% 8.6°C 0mm 86% 0cm -3.3° 11°C 0mm 0.18kPa 24134m 7.8m/s 4.3m/s
05:00
1% 8.8°C 0mm 88% 0cm 1° 11°C 0mm 0.16kPa 24135m 7.9m/s 4.1m/s
06:00
1% 9°C 0mm 89% 0cm 5.6° 11°C 0.06mm 0.14kPa 24134m 7.9m/s 4.4m/s
07:00
1% 9.5°C 0mm 91% 0cm 11° 11°C 0.06mm 0.12kPa 24134m 7.4m/s 4.5m/s
08:00
0% 9.6°C 0.01mm 91% 0cm 16° 11°C 0.06mm 0.12kPa 24134m 7.4m/s 4.9m/s
09:00
0% 9.7°C 0.01mm 93% 0cm 21° 11°C 0.13mm 0.09kPa 24135m 7.1m/s 4.3m/s
10:00
0% 10°C 0mm 94% 0cm 26° 11°C 0mm 0.08kPa 24135m 6.9m/s 4.1m/s
11:00
0% 11°C 0mm 93% 0cm 30° 12°C 0mm 0.09kPa 24134m 6.7m/s 4m/s
12:00
0% 11°C 0.01mm 91% 0cm 33° 12°C 0mm 0.13kPa 24134m 6.1m/s 3.6m/s
13:00
0% 11°C 0.02mm 87% 0cm 34° 13°C 0mm 0.19kPa 24135m 5.4m/s 3.2m/s
14:00
0% 11°C 0.01mm 86% 0cm 34° 13°C 0.06mm 0.22kPa 24134m 5.1m/s 3.2m/s
15:00
0% 11°C 0mm 85% 0cm 31° 14°C 0.06mm 0.23kPa 24135m 4.8m/s 2.9m/s
16:00
0% 11°C 0.03mm 86% 0cm 28° 13°C 0mm 0.21kPa 24134m 4.5m/s 2.5m/s
17:00
0% 11°C 0mm 87% 0cm 24° 13°C 0.06mm 0.2kPa 24134m 5.2m/s 2.8m/s
18:00
0% 11°C 0.01mm 82% 0cm 18° 14°C 0.06mm 0.3kPa 24135m 5.4m/s 3.3m/s
19:00
0% 11°C 0mm 82% 0cm 13° 14°C 0.13mm 0.29kPa 24135m 5.2m/s 2.7m/s
20:00
0% 11°C 0mm 85% 0cm 7.7° 13°C 0.19mm 0.23kPa 24134m 4.4m/s 2.4m/s
21:00
0% 11°C 0mm 88% 0cm 2.8° 12°C 0.25mm 0.17kPa 24134m 3.4m/s 2.6m/s
22:00 ☾
0% 10°C 0mm 91% 0cm -1.7° 12°C 0mm 0.13kPa 24134m 2.6m/s 2.4m/s
23:00 ☾
0% 10°C 0mm 92% 0cm -5.3° 12°C 0mm 0.11kPa 24134m 3m/s 2.4m/s
Thu, Aug 20 Sunrise 04:40 Sunset 21:43
24:00 ☾
0% 10°C 0mm 93% 0cm -7.7° 11°C 0mm 0.09kPa 24134m 3.2m/s 2.6m/s
01:00 ☾
0% 10°C 0mm 95% 0cm -8.7° 11°C 0mm 0.07kPa 24135m 3m/s 2.6m/s
02:00 ☾
0% 10°C 0mm 96% 0cm -8.4° 11°C 0mm 0.06kPa 24134m 2.5m/s 2.3m/s
03:00 ☾
0% 10°C 0mm 95% 0cm -6.6° 11°C 0mm 0.07kPa 24135m 2.2m/s 2.1m/s
04:00 ☾
0% 9.9°C 0mm 94% 0cm -3.6° 11°C 0mm 0.08kPa 24134m 2m/s 2m/s
05:00
1% 9.9°C 0mm 94% 0cm 0.78° 11°C 0mm 0.08kPa 24134m 2.2m/s 2.1m/s
06:00
1% 10°C 0mm 93% 0cm 5.3° 11°C 0mm 0.09kPa 24134m 2.6m/s 2.2m/s
07:00
1% 10°C 0mm 91% 0cm 10° 12°C 0mm 0.12kPa 24134m 3.4m/s 2.4m/s
08:00
1% 10°C 0mm 91% 0cm 16° 12°C 0mm 0.13kPa 24135m 4.7m/s 3.2m/s
09:00
1% 10°C 0mm 88% 0cm 21° 12°C 0mm 0.17kPa 24134m 5.5m/s 3.4m/s
10:00
4% 10°C 0mm 81% 0cm 26° 13°C 0mm 0.3kPa 24134m 5.6m/s 3.6m/s
11:00
8% 9.6°C 0mm 72% 0cm 30° 14°C 0mm 0.45kPa 24134m 5.9m/s 3.8m/s
12:00
11% 9.2°C 0mm 66% 0cm 33° 16°C 0mm 0.61kPa 24134m 6.1m/s 3.9m/s
13:00
11% 8.8°C 0mm 60% 0cm 34° 17°C 0mm 0.76kPa 24135m 6.1m/s 4m/s
14:00
10% 8.7°C 0mm 58% 0cm 33° 17°C 0mm 0.82kPa 24135m 6.5m/s 4.9m/s
15:00
10% 8.7°C 0mm 58% 0cm 31° 17°C 0mm 0.82kPa 24135m 6.7m/s 5.1m/s
16:00
10% 8.8°C 0mm 58% 0cm 28° 17°C 0mm 0.81kPa 24134m 7.1m/s 5.2m/s
17:00
11% 9.4°C 0mm 65% 0cm 23° 16°C 0mm 0.63kPa 24134m 8.6m/s 4.7m/s
18:00
11% 9.6°C 0mm 68% 0cm 18° 16°C 0mm 0.57kPa 24135m 10m/s 5.1m/s
19:00
11% 10°C 0mm 71% 0cm 13° 15°C 0mm 0.5kPa 24134m 9.2m/s 4.5m/s
20:00
11% 10°C 0mm 75% 0cm 7.3° 15°C 0.13mm 0.42kPa 24135m 9.5m/s 4.7m/s
21:00
11% 10°C 0mm 78% 0cm 2.4° 14°C 0.13mm 0.35kPa 24134m 9.5m/s 4.6m/s
22:00 ☾
13% 11°C 0.02mm 85% 0cm -2.1° 13°C 0.31mm 0.23kPa 16753m 6.9m/s 3.5m/s
23:00 ☾
15% 11°C 0.05mm 92% 0cm -5.7° 12°C 0.5mm 0.12kPa 9372m 4.3m/s 2.4m/s
Fri, Aug 21 Sunrise 04:44 Sunset 21:39
24:00 ☾
17% 11°C 0.07mm 99% 0cm -8° 12°C 0.69mm 0.02kPa 1991m 1.7m/s 1.3m/s
01:00 ☾
16% 12°C 0.09mm 98% 0cm -9.1° 12°C 0.9mm 0.03kPa 7014m 2.1m/s 1.3m/s
02:00 ☾
15% 12°C 0.1mm 97% 0cm -8.7° 12°C 1.1mm 0.04kPa 12037m 2.4m/s 1.3m/s
03:00 ☾
14% 12°C 0.12mm 96% 0cm -6.9° 12°C 1.3mm 0.05kPa 17060m 2.7m/s 1.3m/s
04:00 ☾
12% 12°C 0.08mm 94% 0cm -3.9° 12°C 1.3mm 0.09kPa 15428m 2.5m/s 1.4m/s
05:00
10% 12°C 0.04mm 92% 0cm 0.52° 13°C 1.2mm 0.12kPa 13796m 2.3m/s 1.5m/s
06:00
8% 12°C 0mm 90% 0cm 5° 13°C 1.1mm 0.16kPa 12163m 2m/s 1.5m/s
07:00
8% 11°C 0.05mm 91% 0cm 10° 13°C 1.5mm 0.14kPa 12794m 1.5m/s 1.1m/s
08:00
8% 11°C 0.11mm 92% 0cm 16° 13°C 1.8mm 0.12kPa 13425m 1m/s 0.74m/s
09:00
8% 11°C 0.16mm 93% 0cm 21° 12°C 2.1mm 0.1kPa 14056m 0.53m/s 0.33m/s
10:00
8% 11°C 0.13mm 94% 0cm 26° 12°C 1.6mm 0.09kPa 17416m 0.5m/s 0.26m/s
11:00
9% 11°C 0.1mm 95% 0cm 30° 12°C 1.1mm 0.08kPa 20775m 0.46m/s 0.2m/s
12:00
9% 11°C 0.07mm 95% 0cm 32° 12°C 0.63mm 0.07kPa 24135m 0.43m/s 0.13m/s
13:00
8% 11°C 0.12mm 95% 0cm 33° 12°C 0.83mm 0.06kPa 24135m 0.43m/s 0.16m/s
14:00
7% 11°C 0.17mm 96% 0cm 33° 12°C 1mm 0.06kPa 24135m 0.43m/s 0.18m/s
15:00
6% 11°C 0.22mm 96% 0cm 31° 12°C 1.3mm 0.06kPa 24135m 0.43m/s 0.21m/s
16:00
7% 11°C 0.15mm 96% 0cm 27° 11°C 0.98mm 0.05kPa 24135m 0.82m/s 0.52m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →
Forecast generated

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