Rule Storm Chaser

Storm Chaser Forecast for Porthcurno, Cornwall

Porthcurno, England, United Kingdom

Porthcurno combines a pale beach, turquoise water, granite cliffs and the open-air Minack Theatre, supporting both natural and architectural compositions.

Currently

Real-time conditions

Storm Intensity

CAPE15

Lifted Index4.9°C

Wind Gusts10.0m/s

Precipitation0.2mm

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

Next opportunity

Moderate Storm

Porthcurno

Tue, Aug 25 · 12:00–16:00 · 4h window

Low confidence

22%

⛈️Storm Intensity47.9-60%

CAPE: 94

Lifted Index: 2.0°C

Wind Gusts: 10.6m/s

Precipitation: 12.9mm

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Storm Chaser conditions across Cornwall. The requirements and hourly values below show how those signals apply at Porthcurno.

Explore Storm Chaser conditions across Cornwall →

Recorded match history

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

Last 30 days

recorded matching windows

Last 90 days

recorded matching windows

Last 365 days

recorded matching windows

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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95-hour requirements breakdown

When available, the detailed table below covers only the stated 95-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 95 hours

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/London	Storm Intensity ≥ 40.0%
Mon, Aug 17
08:00	10%
09:00	10%
10:00	0%
11:00	0%
12:00	0%
13:00	0%
14:00	0%
15:00	0%
16:00	0%
17:00	0%
18:00	0%
19:00	0%
20:00	0%
21:00	0%
22:00	0%
23:00	0%
Tue, Aug 18
24:00	0%
01:00	0%
02:00	0%
03:00	17%
04:00	20%
05:00	15%
06:00	0%
07:00	0%
08:00	0%
09:00	0%
10:00	0%
11:00	0%
12:00	0%
13:00	0%
14:00	0%
15:00	0%
16:00	0%
17:00	0%
18:00	0%
19:00	0%
20:00	0%
21:00	0%
22:00	18%
23:00	0%
Wed, Aug 19
24:00	0%
01:00	31%
02:00	19%
03:00	0%
04:00	19%
05:00	21%
06:00	18%
07:00	31%
08:00	15%
09:00	14%
10:00	0%
11:00	18%
12:00	19%
13:00	29%
14:00	21%
15:00	23%
16:00	27%
17:00	25%
18:00	27%
19:00	31%
20:00	25%
21:00	25%
22:00	27%
23:00	24%
Thu, Aug 20
24:00	25%
01:00	35%
02:00	24%
03:00	21%
04:00	13%
05:00	19%
06:00	19%
07:00	24%
08:00	18%
09:00	20%
10:00	23%
11:00	19%
12:00	18%
13:00	13%
14:00	0%
15:00	0%
16:00	13%
17:00	10%
18:00	10%
19:00	13%
20:00	0%
21:00	0%
22:00	0%
23:00	0%
Fri, Aug 21
24:00	0%
01:00	0%
02:00	0%
03:00	0%
04:00	0%
05:00	0%
06:00	0%

How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Storm Intensity 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	Air Pressure hPa	CAPE J/kg	Convective Precip Fraction fraction	Lifted Index °C	Precipitation Chance %	Rainfall mm	Showers mm	Simulated Reflectivity dBZ	Total Precipitation mm	Visibility m	Wind Gusts m/s	Wind Shear 0-3 km m/s	Wind Shear 0-6 km m/s	Wind Speed m/s
Tue, Aug 18 Sunrise 06:16 Sunset 20:35
09:00	1016hPa	15J/kg	0.17fraction	4.9°C	21%	0.03mm	0mm	7.4dBZ	0.19mm	24135m	10m/s	-	-	6.7m/s
10:00	1017hPa	10J/kg	0.19fraction	6.4°C	3%	0mm	0.01mm	3.9dBZ	0.19mm	24135m	10m/s	9.2m/s	14m/s	7.2m/s
11:00	1016hPa	0J/kg	0.13fraction	7.4°C	15%	0.01mm	0mm	-4dBZ	0.25mm	24135m	9.1m/s	-	-	7.3m/s
12:00	1017hPa	0J/kg	0.07fraction	8.7°C	27%	0.01mm	0mm	-12dBZ	0.25mm	24134m	9m/s	-	-	8.2m/s
13:00	1017hPa	2J/kg	0.01fraction	10°C	39%	0mm	0mm	-20dBZ	0.25mm	24135m	8.6m/s	9.2m/s	16m/s	7.7m/s
14:00	1016hPa	4J/kg	0.01fraction	10°C	39%	0mm	0mm	-13dBZ	0mm	24134m	8m/s	-	-	6.8m/s
15:00	1016hPa	2J/kg	0fraction	10°C	39%	0.01mm	0mm	-6.2dBZ	0mm	24135m	8.7m/s	-	-	7.5m/s
16:00	1015hPa	3J/kg	0fraction	10°C	39%	0.01mm	0mm	0.77dBZ	0mm	24135m	8.2m/s	8.9m/s	19m/s	7m/s
17:00	1015hPa	3J/kg	0.09fraction	10°C	38%	0.02mm	0.01mm	4.4dBZ	0.06mm	24134m	8.2m/s	-	-	7.2m/s
18:00	1015hPa	5J/kg	0.18fraction	10°C	38%	0.02mm	0.01mm	8dBZ	0.06mm	24135m	8.6m/s	-	-	7.2m/s
19:00	1014hPa	7J/kg	0.28fraction	9.7°C	37%	0.04mm	0.01mm	12dBZ	0.13mm	24135m	8.8m/s	9.3m/s	16m/s	7.4m/s
20:00	1014hPa	4J/kg	0.26fraction	9.5°C	39%	0.04mm	0mm	9.9dBZ	0.06mm	24134m	8.9m/s	-	-	7.8m/s
21:00 ☾	1014hPa	4J/kg	0.24fraction	10°C	40%	0.02mm	0.01mm	8.1dBZ	0.06mm	24134m	9.5m/s	-	-	8.5m/s
22:00 ☾	1014hPa	12J/kg	0.21fraction	9.6°C	41%	0.02mm	0.04mm	6.3dBZ	0.13mm	24134m	9.4m/s	14m/s	22m/s	8.1m/s
23:00 ☾	1014hPa	18J/kg	0.22fraction	9.2°C	49%	0.01mm	0.07mm	13dBZ	0.19mm	24135m	9.2m/s	-	-	7.9m/s
Wed, Aug 19 Sunrise 06:16 Sunset 20:35
24:00 ☾	1014hPa	18J/kg	0.22fraction	8.9°C	56%	0.02mm	0.05mm	20dBZ	0.25mm	24134m	8.7m/s	-	-	7.7m/s
01:00 ☾	1013hPa	22J/kg	0.22fraction	8.8°C	64%	0.26mm	0.05mm	27dBZ	0.5mm	22873m	7.4m/s	19m/s	26m/s	7m/s
02:00 ☾	1013hPa	44J/kg	0.25fraction	7.8°C	62%	0.07mm	0.15mm	21dBZ	0.31mm	20764m	8.5m/s	-	-	7.2m/s
03:00 ☾	1012hPa	19J/kg	0.28fraction	8.1°C	60%	0mm	0.07mm	15dBZ	0.44mm	24134m	9.1m/s	-	-	8m/s
04:00 ☾	1012hPa	24J/kg	0.3fraction	7.3°C	57%	0mm	0.14mm	9.5dBZ	0.56mm	23868m	9.3m/s	15m/s	26m/s	8.4m/s
05:00 ☾	1011hPa	36J/kg	0.29fraction	6.1°C	62%	0mm	0.31mm	11dBZ	0.69mm	18417m	9.3m/s	-	-	8.1m/s
06:00 ☾	1011hPa	38J/kg	0.28fraction	5.4°C	66%	0mm	0.32mm	13dBZ	0.94mm	18939m	8.9m/s	-	-	7.8m/s
07:00	1011hPa	30J/kg	0.26fraction	5.2°C	71%	0mm	0.08mm	14dBZ	1.1mm	24134m	8.3m/s	10m/s	25m/s	7.1m/s
08:00	1011hPa	22J/kg	0.23fraction	5.2°C	66%	0mm	0.03mm	4.3dBZ	0.06mm	24134m	8.6m/s	-	-	7.4m/s
09:00	1011hPa	23J/kg	0.19fraction	5°C	61%	0mm	0.05mm	-5.5dBZ	0.06mm	24134m	8.7m/s	-	-	7.7m/s
10:00	1011hPa	38J/kg	0.15fraction	4.5°C	56%	0mm	0.08mm	-15dBZ	0.19mm	24135m	8.8m/s	9.9m/s	26m/s	7.5m/s
11:00	1011hPa	24J/kg	0.41fraction	4.9°C	60%	0mm	0.02mm	-7dBZ	0.19mm	24134m	8.6m/s	-	-	7.5m/s
12:00	1010hPa	31J/kg	0.66fraction	5°C	64%	0mm	0.08mm	1.3dBZ	0.25mm	24134m	8.9m/s	-	-	7.9m/s
13:00	1010hPa	24J/kg	0.91fraction	5.8°C	69%	0mm	0.06mm	9.5dBZ	0.38mm	24135m	8.9m/s	8m/s	19m/s	8m/s
14:00	1010hPa	0J/kg	0.94fraction	7.7°C	73%	0mm	0mm	2.2dBZ	0mm	24134m	9.9m/s	-	-	9.1m/s
15:00	1010hPa	0J/kg	0.97fraction	7.9°C	78%	0mm	0mm	-5.1dBZ	0mm	24135m	10m/s	-	-	8.9m/s
16:00	1010hPa	18J/kg	1fraction	6.7°C	82%	0mm	0.04mm	-12dBZ	0mm	24134m	10m/s	6.5m/s	12m/s	8.5m/s
17:00	1009hPa	32J/kg	1fraction	5.6°C	88%	0mm	0.11mm	-3.2dBZ	0.06mm	24134m	10m/s	-	-	9m/s
18:00	1009hPa	38J/kg	1fraction	5.1°C	93%	0mm	0.09mm	5.9dBZ	0.25mm	23264m	11m/s	-	-	9.7m/s
19:00	1009hPa	31J/kg	1fraction	5.2°C	99%	0mm	0.06mm	15dBZ	0.38mm	24034m	12m/s	3.7m/s	14m/s	10m/s
20:00	1008hPa	65J/kg	0.9fraction	4.2°C	93%	0mm	0.03mm	5.8dBZ	0mm	24135m	12m/s	-	-	9.8m/s
21:00 ☾	1009hPa	89J/kg	0.8fraction	4.8°C	87%	0mm	0.03mm	-3.5dBZ	0.13mm	24135m	11m/s	-	-	10m/s
22:00 ☾	1009hPa	89J/kg	0.7fraction	4.4°C	82%	0mm	0.09mm	-13dBZ	0.19mm	23903m	11m/s	1.7m/s	14m/s	9.7m/s
23:00 ☾	1008hPa	80J/kg	0.78fraction	4.6°C	85%	0mm	0.35mm	-1.5dBZ	0.56mm	20821m	12m/s	-	-	11m/s
Thu, Aug 20 Sunrise 06:18 Sunset 20:33
24:00 ☾	1008hPa	71J/kg	0.87fraction	3.9°C	88%	0mm	0.2mm	9.9dBZ	0.94mm	19064m	12m/s	-	-	10m/s
01:00 ☾	1008hPa	49J/kg	0.95fraction	4°C	92%	0mm	0.04mm	21dBZ	1.1mm	24135m	11m/s	0.41m/s	11m/s	9.4m/s
02:00 ☾	1008hPa	50J/kg	0.69fraction	3.6°C	80%	0mm	0.37mm	8.2dBZ	0.25mm	15746m	11m/s	-	-	10m/s
03:00 ☾	1008hPa	26J/kg	0.44fraction	4.1°C	68%	0mm	0.02mm	-4.8dBZ	0.38mm	24135m	12m/s	-	-	10m/s
04:00 ☾	1008hPa	37J/kg	0.18fraction	4.1°C	56%	0mm	0.11mm	-18dBZ	0.44mm	23927m	12m/s	2.1m/s	11m/s	10m/s
05:00 ☾	1007hPa	35J/kg	0.17fraction	4.1°C	65%	0mm	0.08mm	-11dBZ	0.56mm	23914m	11m/s	-	-	10m/s
06:00 ☾	1007hPa	42J/kg	0.15fraction	4.2°C	73%	0mm	0.11mm	-3.8dBZ	0.69mm	22601m	12m/s	-	-	10m/s
07:00	1008hPa	32J/kg	0.14fraction	4.1°C	82%	0mm	0.13mm	3.2dBZ	0.75mm	21017m	12m/s	1.1m/s	12m/s	10m/s
08:00	1009hPa	21J/kg	0.39fraction	4.2°C	68%	0.01mm	0.06mm	3.3dBZ	0.06mm	24134m	11m/s	-	-	9.5m/s
09:00	1009hPa	11J/kg	0.65fraction	4.6°C	53%	0.01mm	0.04mm	3.3dBZ	0.13mm	24134m	11m/s	-	-	9.8m/s
10:00	1010hPa	13J/kg	0.9fraction	4.4°C	39%	0.01mm	0.02mm	3.4dBZ	0.13mm	24135m	10m/s	3.3m/s	13m/s	9.7m/s
11:00	1010hPa	15J/kg	0.67fraction	4°C	39%	0mm	0.05mm	-4.4dBZ	0.19mm	24135m	10m/s	-	-	9.3m/s
12:00	1011hPa	12J/kg	0.44fraction	4.2°C	39%	0mm	0.04mm	-12dBZ	0.25mm	24135m	9.4m/s	-	-	8.8m/s
13:00	1011hPa	6J/kg	0.21fraction	4.8°C	39%	0.01mm	0mm	-20dBZ	0.25mm	24135m	8.7m/s	3.9m/s	13m/s	8.4m/s
14:00	1012hPa	8.7J/kg	0.29fraction	4.2°C	39%	0.007mm	0mm	-20dBZ	0.17mm	24135m	7.8m/s	-	-	7.4m/s
15:00	1012hPa	11J/kg	0.37fraction	3.6°C	39%	0.003mm	0mm	-19dBZ	0.08mm	24135m	6.9m/s	-	-	6.4m/s
16:00	1012hPa	14J/kg	0.46fraction	2.9°C	39%	0mm	0mm	-19dBZ	0mm	24135m	6m/s	4.2m/s	13m/s	5.5m/s
17:00	1012hPa	9.3J/kg	0.5fraction	2.8°C	39%	0mm	0mm	-13dBZ	0mm	24135m	6m/s	-	-	5.3m/s
18:00	1012hPa	4.7J/kg	0.55fraction	2.7°C	39%	0mm	0mm	-8.3dBZ	0mm	24135m	6m/s	-	-	5.2m/s
19:00	1012hPa	0J/kg	0.59fraction	2.7°C	39%	0mm	0mm	-3.1dBZ	0mm	24135m	5.9m/s	4.1m/s	13m/s	5m/s
20:00	1012hPa	0.33J/kg	0.4fraction	2.5°C	39%	0mm	0mm	-8.8dBZ	0mm	24135m	6.3m/s	-	-	5.3m/s
21:00 ☾	1012hPa	0.67J/kg	0.2fraction	2.3°C	39%	0mm	0mm	-14dBZ	0mm	24135m	6.8m/s	-	-	5.5m/s
22:00 ☾	1012hPa	1J/kg	0fraction	2.1°C	39%	0mm	0mm	-20dBZ	0mm	24135m	7.2m/s	3.1m/s	12m/s	5.7m/s
23:00 ☾	1012hPa	2.3J/kg	0fraction	2.1°C	38%	0mm	0mm	-20dBZ	0mm	24135m	7m/s	-	-	5.6m/s
Fri, Aug 21 Sunrise 06:19 Sunset 20:31
24:00 ☾	1012hPa	3.7J/kg	0fraction	2°C	38%	0mm	0mm	-20dBZ	0mm	24135m	6.8m/s	-	-	5.5m/s
01:00 ☾	1012hPa	5J/kg	0fraction	1.9°C	37%	0mm	0mm	-20dBZ	0mm	24135m	6.6m/s	2.8m/s	13m/s	5.4m/s
02:00 ☾	1013hPa	7J/kg	0fraction	1.7°C	44%	0mm	0mm	-20dBZ	0mm	24135m	6.1m/s	-	-	5.1m/s
03:00 ☾	1013hPa	9J/kg	0fraction	1.5°C	50%	0mm	0mm	-20dBZ	0mm	24135m	5.6m/s	-	-	4.8m/s
04:00 ☾	1013hPa	11J/kg	0fraction	1.2°C	56%	0mm	0mm	-20dBZ	0mm	24135m	5.1m/s	7.1m/s	14m/s	4.5m/s
05:00 ☾	1014hPa	21J/kg	0fraction	0.95°C	58%	0mm	0.02mm	-20dBZ	0.02mm	24135m	4.4m/s	-	-	3.9m/s
06:00 ☾	1014hPa	32J/kg	0fraction	0.66°C	60%	0mm	0.05mm	-20dBZ	0.04mm	24135m	3.8m/s	-	-	3.4m/s
07:00	1014hPa	42J/kg	0fraction	0.38°C	61%	0mm	0.07mm	-20dBZ	0.06mm	24135m	3.2m/s	7.9m/s	14m/s	2.8m/s
08:00	1014hPa	41J/kg	0fraction	0.3°C	49%	0mm	0.05mm	-20dBZ	0.08mm	24135m	4m/s	-	-	3.9m/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

Aug 18, 2026, 7:15 AM UTC

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