Skip to content
Rule Storm Chaser

St Michaels Mount - Storm Chaser - Cornwall

Marazion, England, United Kingdom

Dramatic storm conditions — from atmospheric builds to active thunderstorms

No opportunities right now
Here’s what usually blocks matches

No Storm Chaser opportunities in the next 14 days

Get notified
Free alerts · takes 30 seconds
Rule requirements (key thresholds)
Storm Intensity · ≥ 55.0% Cloud Drama Score · ≥ 55.0% CAPE · ≥ 1200.0J/kg Lifted Index · ≤ -2.0°C

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Storm Intensity 100% failing
Cloud Drama Score 99% failing
CAPE 42% failing

Currently

Real-time conditions
Cloud Cover0%
Wind Gusts4.3m/s
Precipitation Chance0%
Air Pressure1024.3hPa
CAPE0
Lifted Index3.7°C
Wind Gusts4.3m/s
Precipitation0.0mm

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 identifies when Atlantic storm conditions create dramatic—but photographable—conditions along Cornwall's exposed coastline. We track storm intensity, wave height, wind speed, and clearing patterns to predict when you can safely capture storm drama.

Cornwall's position jutting into the Atlantic makes it one of Britain's premier locations for storm photography. Winter Atlantic depressions bring powerful swells that create spectacular wave action against granite cliffs, while rapid weather changes mean clearing conditions often follow close behind storm systems, providing dramatic light.

What makes Cornwall special for storm photography:

  • Atlantic exposure - Unobstructed fetch means powerful wave action at exposed headlands
  • Storm focal points - Sennen Cove and Porthleven famous for dramatic wave photography
  • Historic elements - Lighthouses and mine ruins add narrative to storm scenes
  • Rapid clearing - Post-frontal clearing often produces rainbow opportunities and dramatic light

Sennen Cove near Land's End becomes a magnet for storm photographers when Atlantic swells arrive—waves can reach spectacular heights, crashing over the harbour wall. Porthleven is notorious for storm surge conditions, with massive waves flooding the historic harbour during peak storms—dramatic but requiring extreme caution. The Botallack tin mine engine houses perched on cliffs become even more dramatic when waves explode below them. Godrevy Lighthouse withstanding storm seas creates powerful compositions. Safety is paramount—our forecast helps identify conditions that are dramatic but not dangerous, tracking when the worst of storms have passed but seas remain photogenic. Always maintain safe distances, never turn your back on the sea, and be aware that "sneaker waves" can arrive unexpectedly during storm conditions.

Create your own Storm Chaser alerts

Get notified when these conditions match at your own locations.

Get this template

72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
OR logic: one branch per group is enough
Meets requirement
Misses requirement
Time
Europe/London
Storm Intensity
≥ 55.0%
Cloud Drama Score
≥ 55.0%
CAPE
OR1·B1
≥ 1200.0J/kg
Lifted Index
OR1·B2
≤ -2.0°C
Visibility
≥ 2500.0m
Wind Gusts
≤ 22.0m/s
Sat, May 23
14:000%42%0J/kg9°C24134m2.3m/s
15:000%32%0J/kg9.1°C24135m2.4m/s
16:000%22%0J/kg9.2°C24134m2.4m/s
17:000%30%0J/kg9.4°C24135m2.6m/s
18:000%16%0J/kg9°C24135m3.4m/s
19:000%14%0J/kg8.8°C24134m3.6m/s
20:000%13%0J/kg9°C24135m3.7m/s
21:000%6.7%0J/kg8.8°C24134m3.3m/s
22:000%0.8%0J/kg8.7°C24135m3.5m/s
23:000%0.8%0J/kg8.7°C24135m3.5m/s
Sun, May 24
24:000%0.9%0J/kg8.6°C24135m4m/s
01:000%0.8%0J/kg8.2°C24135m4.2m/s
02:000%0.7%0J/kg6.2°C24134m5.8m/s
03:000%0.9%0J/kg6.1°C24135m5.5m/s
04:000%11%0J/kg5.8°C24135m4.7m/s
05:000%16%0J/kg5.7°C24134m3.9m/s
06:000%20%0J/kg5.7°C24135m3.3m/s
07:000%11%0J/kg4.9°C24134m3.2m/s
08:000%15%0J/kg5.6°C24134m5m/s
09:000%10%0J/kg4.8°C24134m4.1m/s
10:000%4.6%0J/kg4.5°C24134m3.5m/s
11:000%0.7%0J/kg4.3°C24135m3.6m/s
12:000%0.1%0J/kg4.1°C24134m4m/s
13:000%0%0J/kg3.7°C24135m4.2m/s
14:000%0.2%0J/kg3.7°C24135m4.3m/s
15:000%0.4%0J/kg3.9°C24135m4.4m/s
16:000%0.4%0J/kg4.1°C24134m4.2m/s
17:000%0%0J/kg4.4°C24134m4.4m/s
18:000%0%0J/kg4.5°C24134m4.6m/s
19:000%0%0J/kg4.9°C24134m4.9m/s
20:000%0%0J/kg5.2°C24135m4.2m/s
21:000%0%0J/kg5.1°C24134m3.4m/s
22:000%0%0J/kg4.6°C24135m4.1m/s
23:000%0%0J/kg3.6°C24134m4.2m/s
Mon, May 25
24:000%0%0J/kg3.1°C24135m4.7m/s
01:000%0%0J/kg3.7°C24135m5.6m/s
02:000%0%0J/kg4.4°C24135m7.1m/s
03:000%0%0J/kg2.9°C24135m7.6m/s
04:000%2.4%220J/kg-0.6°C24135m8.1m/s
05:000%3.3%439J/kg-1.6°C24134m8.3m/s
06:000%3%331J/kg-1.3°C24134m8.6m/s
07:000%2.6%496J/kg-2°C24134m9.4m/s
08:000%3%646J/kg-2.5°C24135m9.1m/s
09:000%4.7%713J/kg-2.8°C24134m8.8m/s
10:000%4%434J/kg-2.1°C24135m9.4m/s
11:000%3.7%289J/kg-1.8°C24135m9.5m/s
12:000%4.2%168J/kg-1.4°C24134m9.5m/s
13:000%2.8%229J/kg-1.6°C24135m9.3m/s
14:000%4.4%280J/kg-1.7°C24134m9.3m/s
15:000%5.7%294J/kg-1.7°C24134m9.3m/s
16:000%12%273J/kg-1.7°C24134m9.4m/s
17:000%22%266J/kg-1.7°C24134m8.4m/s
18:000%28%335J/kg-2.1°C24135m7.8m/s
19:000%69%564J/kg-3.2°C24134m7.1m/s
20:000%24%791J/kg-4°C24135m6.7m/s
21:000%23%934J/kg-4.6°C24134m5.7m/s
22:000%47%1054J/kg-4.9°C24135m6m/s
23:000%8.4%1256J/kg-5.7°C24134m5.9m/s
Tue, May 26
24:000%1.3%1370J/kg-6.1°C24134m5.7m/s
01:000%0.8%1478J/kg-6.4°C24135m5.6m/s
02:000%0.5%1621J/kg-6.8°C24134m5.5m/s
03:000%0.5%1720J/kg-6.8°C24135m4.9m/s
04:000%0.4%1795J/kg-6.6°C24134m4.9m/s
05:000%3.2%1743J/kg-6.2°C24134m5.7m/s
06:000%3.4%1672J/kg-5.8°C24134m6m/s
07:000%3%1512J/kg-4.9°C24135m6.7m/s
08:000%0.2%1237J/kg-3.9°C24134m6.5m/s
09:000%0.2%1282J/kg-3.9°C24135m6.4m/s
10:000%0.3%1057J/kg-3.3°C24134m6.9m/s
11:000%0.3%948J/kg-2.9°C24135m6.5m/s
12:000%0.9%1004J/kg-3.1°C24134m6.5m/s
13:000%1.7%1038J/kg-3.3°C24134m6.5m/s
14:000%0.8%936J/kg-2.9°C24134m6.4m/s
15:000%0.2%727J/kg-2.3°C24135m6.2m/s
16:000%0.2%500J/kg-1.8°C24135m6.3m/s
17:000%0.3%444J/kg-1.8°C24134m6.4m/s
18:000%3%376J/kg-1.8°C24135m6.7m/s
19:000%8.8%35J/kg-0.4°C24134m7.3m/s
20:000%14%299J/kg-1.3°C24134m8.8m/s
21:000%27%564J/kg-2.2°C24135m10m/s
22:000%35%828J/kg-3.2°C24135m12m/s
23:000%0%889J/kg-3.4°C24135m13m/s
Wed, May 27
24:000%0%951J/kg-3.5°C24135m13m/s
01:000%0%1012J/kg-3.7°C24135m14m/s
02:000%0%913J/kg-3.6°C24135m14m/s
03:000%0%815J/kg-3.4°C24135m14m/s
04:000%9.6%716J/kg-3.2°C24135m14m/s
05:000%15%681J/kg-3.1°C24135m15m/s
06:000%13%646J/kg-3°C24135m15m/s
07:000%12%611J/kg-2.9°C24135m15m/s
08:000%12%678J/kg-3.1°C24135m15m/s
09:000%12%745J/kg-3.4°C24135m15m/s
10:000%12%812J/kg-3.6°C24135m16m/s
11:000%11%803J/kg-3.6°C22209m15m/s
12:000%9%794J/kg-3.7°C20282m14m/s
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity). For OR groups, only one branch is required, so some OR-branch predicates can be ✕ even in a matching hour.

What does Cloud Drama Score 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
High Clouds
%
Lifted Index
°C
Low Clouds
%
Mid-Level Clouds
%
Precipitation Chance
%
Rainfall
mm
Relative Humidity
%
Showers
mm
Simulated Reflectivity
dBZ
Solar Elevation
°
Total Cloud Coverage
%
Total Precipitation
mm
Wind Shear 0-3 km
m/s
Wind Shear 0-6 km
m/s
Wind Speed
m/s
Sun, May 24 Sunrise 05:24 Sunset 21:13
14:00
1024hPa 0J/kg 0% 3.7°C 0% 0% 0% 0mm 75% 0mm -20dBZ 60° 0% 0mm - - 3m/s
15:00
1024hPa 0J/kg 0% 3.9°C 0% 0% 0% 0mm 74% 0mm -20dBZ 55° 0% 0mm - - 3m/s
16:00
1024hPa 0J/kg 0% 4.1°C 0% 0% 0% 0mm 73% 0mm -20dBZ 47° 0% 0mm 5.1m/s 12m/s 3m/s
17:00
1024hPa 0J/kg 0% 4.4°C 0% 0% 0% 0mm 74% 0mm -20dBZ 38° 0% 0mm - - 3.4m/s
18:00
1024hPa 0J/kg 0% 4.5°C 0% 0% 0% 0mm 76% 0mm -20dBZ 28° 0% 0mm - - 3.6m/s
19:00
1024hPa 0J/kg 0% 4.9°C 0% 0% 0% 0mm 81% 0mm -20dBZ 19° 0% 0mm 6.1m/s 12m/s 3.3m/s
20:00
1024hPa 0J/kg 0% 5.2°C 0% 0% 0% 0mm 83% 0mm -20dBZ 9.7° 0% 0mm - - 3.2m/s
21:00
1024hPa 0J/kg 0% 5.1°C 0% 0% 0% 0mm 81% 0mm -20dBZ 1.4° 0% 0mm - - 3.4m/s
22:00
1024hPa 0J/kg 0% 4.6°C 0% 0% 0% 0mm 79% 0mm -20dBZ -6.5° 0% 0mm 5.2m/s 11m/s 3.6m/s
23:00
1024hPa 0J/kg 0% 3.6°C 0% 0% 0% 0mm 81% 0mm -20dBZ -13° 0% 0mm - - 3.7m/s
Mon, May 25 Sunrise 05:24 Sunset 21:13
24:00
1024hPa 0J/kg 0% 3.1°C 0% 0% 0% 0mm 81% 0mm -20dBZ -17° 0% 0mm - - 3.5m/s
01:00
1024hPa 0J/kg 0% 3.7°C 0% 0% 0% 0mm 81% 0mm -20dBZ -19° 0% 0mm 4.1m/s 9.8m/s 3.5m/s
02:00
1023hPa 0J/kg 0% 4.4°C 0% 0% 0% 0mm 80% 0mm -20dBZ -18° 0% 0mm - - 3.6m/s
03:00
1023hPa 0J/kg 0% 2.9°C 0% 0% 0% 0mm 79% 0mm -20dBZ -15° 0% 0mm - - 3.9m/s
04:00
1023hPa 220J/kg 0% -0.6°C 0% 0% 0% 0mm 77% 0mm -20dBZ -10° 0% 0mm 2.9m/s 6.9m/s 4.4m/s
05:00
1022hPa 439J/kg 0% -1.6°C 0% 0% 0% 0mm 76% 0mm -20dBZ -3.7° 0% 0mm - - 4.6m/s
06:00
1022hPa 331J/kg 0% -1.3°C 0% 0% 0% 0mm 79% 0mm -20dBZ 4.3° 0% 0mm - - 5.1m/s
07:00
1022hPa 496J/kg 0% -2°C 0% 0% 0% 0mm 83% 0mm -20dBZ 13° 0% 0mm 2.3m/s 4.2m/s 5.4m/s
08:00
1023hPa 646J/kg 0% -2.5°C 0% 0% 0% 0mm 84% 0mm -20dBZ 22° 0% 0mm - - 5.5m/s
09:00
1023hPa 713J/kg 0% -2.8°C 0% 0% 0% 0mm 84% 0mm -20dBZ 32° 0% 0mm - - 6.1m/s
10:00
1023hPa 434J/kg 0% -2.1°C 0% 0% 0% 0mm 84% 0mm -20dBZ 41° 0% 0mm 4.7m/s 4.2m/s 7m/s
11:00
1023hPa 289J/kg 0% -1.8°C 0% 0% 0% 0mm 83% 0mm -20dBZ 50° 0% 0mm - - 7.2m/s
12:00
1022hPa 168J/kg 0% -1.4°C 0% 0% 0% 0mm 81% 0mm -20dBZ 57° 0% 0mm - - 7.3m/s
13:00
1022hPa 229J/kg 0% -1.6°C 0% 0% 0% 0mm 80% 0mm -20dBZ 61° 0% 0mm 4.2m/s 2.9m/s 7.1m/s
14:00
1022hPa 280J/kg 0% -1.7°C 0% 0% 4% 0mm 79% 0mm -20dBZ 60° 0% 0mm - - 7m/s
15:00
1022hPa 294J/kg 0% -1.7°C 0% 0% 8% 0mm 78% 0mm -20dBZ 55° 0% 0mm - - 6.9m/s
16:00
1022hPa 273J/kg 0% -1.7°C 0% 0% 13% 0mm 79% 0mm -20dBZ 47° 0% 0mm 4.5m/s 4.2m/s 6.8m/s
17:00
1021hPa 266J/kg 4% -1.7°C 0% 0% 42% 0mm 80% 0mm -20dBZ 38° 4% 0mm - - 6.4m/s
18:00
1021hPa 335J/kg 5% -2.1°C 0% 2% 71% 0mm 82% 0mm -20dBZ 29° 5% 0mm - - 5.5m/s
19:00
1021hPa 564J/kg 5% -3.2°C 0% 29% 100% 0mm 86% 0mm -20dBZ 19° 29% 0mm 1.5m/s 0.78m/s 4.3m/s
20:00
1021hPa 791J/kg 0% -4°C 0% 5% 72% 0mm 88% 0mm -20dBZ 9.8° 5% 0mm - - 3.8m/s
21:00
1022hPa 934J/kg 0% -4.6°C 0% 4% 44% 0mm 89% 0mm -20dBZ 1.5° 4% 0mm - - 3.7m/s
22:00
1022hPa 1054J/kg 0% -4.9°C 0% 27% 15% 0mm 90% 0mm -20dBZ -6.3° 27% 0mm 2.9m/s 2.5m/s 3.8m/s
23:00
1022hPa 1256J/kg 2% -5.7°C 0% 24% 16% 0mm 91% 0mm -19dBZ -12° 24% 0mm - - 3.7m/s
Tue, May 26 Sunrise 05:23 Sunset 21:14
24:00
1022hPa 1370J/kg 0% -6.1°C 0% 5% 16% 0mm 91% 0mm -19dBZ -17° 5% 0mm - - 3.6m/s
01:00
1021hPa 1478J/kg 0% -6.4°C 0% 1% 17% 0mm 90% 0mm -18dBZ -19° 1% 0mm 2.8m/s 4.5m/s 3.3m/s
02:00
1021hPa 1621J/kg 0% -6.8°C 0% 0% 11% 0mm 90% 0mm -19dBZ -18° 0% 0mm - - 3.3m/s
03:00
1021hPa 1720J/kg 0% -6.8°C 0% 0% 6% 0mm 90% 0mm -19dBZ -15° 0% 0mm - - 3.2m/s
04:00
1020hPa 1795J/kg 0% -6.6°C 0% 0% 0% 0mm 91% 0mm -19dBZ -10° 0% 0mm 2.6m/s 3.5m/s 3.3m/s
05:00
1020hPa 1743J/kg 0% -6.2°C 0% 0% 0% 0mm 92% 0mm -20dBZ -3.6° 0% 0mm - - 3.6m/s
06:00
1020hPa 1672J/kg 0% -5.8°C 0% 0% 0% 0mm 92% 0mm -20dBZ 4.5° 0% 0mm - - 3.7m/s
07:00
1020hPa 1512J/kg 0% -4.9°C 0% 0% 0% 0mm 92% 0mm -20dBZ 13° 0% 0mm 2.3m/s 0.67m/s 4.1m/s
08:00
1020hPa 1237J/kg 0% -3.9°C 0% 0% 0% 0mm 89% 0mm -20dBZ 23° 0% 0mm - - 4.5m/s
09:00
1021hPa 1282J/kg 0% -3.9°C 0% 0% 0% 0mm 86% 0mm -20dBZ 32° 0% 0mm - - 5m/s
10:00
1021hPa 1057J/kg 0% -3.3°C 0% 0% 0% 0mm 84% 0mm -20dBZ 42° 0% 0mm 2.3m/s 2m/s 5.7m/s
11:00
1021hPa 948J/kg 0% -2.9°C 0% 0% 0% 0mm 82% 0mm -20dBZ 50° 0% 0mm - - 5.4m/s
12:00
1021hPa 1004J/kg 0% -3.1°C 0% 0% 0% 0mm 80% 0mm -20dBZ 57° 0% 0mm - - 5.4m/s
13:00
1021hPa 1038J/kg 0% -3.3°C 0% 0% 0% 0mm 78% 0mm -20dBZ 61° 0% 0mm 2.4m/s 3.4m/s 5.5m/s
14:00
1021hPa 936J/kg 0% -2.9°C 0% 0% 0% 0mm 77% 0mm -20dBZ 60° 0% 0mm - - 5.3m/s
15:00
1020hPa 727J/kg 0% -2.3°C 0% 0% 0% 0mm 75% 0mm -20dBZ 55° 0% 0mm - - 5.2m/s
16:00
1020hPa 500J/kg 0% -1.8°C 0% 0% 0% 0mm 75% 0mm -20dBZ 47° 0% 0mm 3.9m/s 5.5m/s 5.3m/s
17:00
1020hPa 444J/kg 0% -1.8°C 0% 0% 17% 0mm 76% 0mm -20dBZ 38° 0% 0mm - - 5.3m/s
18:00
1020hPa 376J/kg 0% -1.8°C 0% 0% 33% 0mm 80% 0mm -20dBZ 29° 0% 0mm - - 5.1m/s
19:00
1019hPa 35J/kg 0% -0.4°C 0% 0% 50% 0mm 80% 0mm -20dBZ 19° 0% 0mm 4.9m/s 6.5m/s 4.6m/s
20:00
1020hPa 299J/kg 4% -1.3°C 0% 1% 50% 0mm 81% 0mm -20dBZ 10° 4% 0.02mm - - 5.7m/s
21:00
1022hPa 564J/kg 8% -2.2°C 0% 1% 50% 0mm 82% 0mm -20dBZ 1.7° 8% 0.04mm - - 6.8m/s
22:00
1023hPa 828J/kg 12% -3.2°C 0% 2% 50% 0mm 82% 0mm -20dBZ -6.1° 12% 0.06mm 3.2m/s 5.9m/s 7.9m/s
23:00
1023hPa 889J/kg 10% -3.4°C 0% 2% 38% 0mm 83% 0mm -20dBZ -12° 10% 0.08mm - - 8.2m/s
Wed, May 27 Sunrise 05:22 Sunset 21:15
24:00
1022hPa 951J/kg 7% -3.5°C 0% 1% 27% 0mm 84% 0mm -20dBZ -16° 7% 0.1mm - - 8.5m/s
01:00
1022hPa 1012J/kg 5% -3.7°C 0% 1% 15% 0mm 85% 0mm -20dBZ -18° 5% 0.13mm 2.6m/s 3.7m/s 8.9m/s
02:00
1023hPa 913J/kg 3% -3.6°C 0% 0% 28% 0mm 85% 0mm -20dBZ -18° 3% 0.13mm - - 9.2m/s
03:00
1023hPa 815J/kg 2% -3.4°C 0% 0% 42% 0mm 86% 0mm -20dBZ -15° 2% 0.13mm - - 9.5m/s
04:00
1023hPa 716J/kg 0% -3.2°C 0% 0% 55% 0mm 87% 0mm -20dBZ -10° 0% 0.13mm 3.5m/s 5.8m/s 9.8m/s
05:00
1023hPa 681J/kg 0% -3.1°C 0% 0% 45% 0mm 87% 0mm -20dBZ -3.5° 0% 0.13mm - - 10m/s
06:00
1023hPa 646J/kg 0% -3°C 0% 0% 36% 0mm 86% 0mm -20dBZ 4.6° 0% 0.13mm - - 10m/s
07:00
1023hPa 611J/kg 0% -2.9°C 0% 0% 26% 0mm 86% 0mm -20dBZ 13° 0% 0.13mm 4.7m/s 5.9m/s 11m/s
08:00
1023hPa 678J/kg 0% -3.1°C 0% 0% 34% 0mm 87% 0mm -20dBZ 23° 0% 0.13mm - - 10m/s
09:00
1022hPa 745J/kg 0% -3.4°C 0% 0% 42% 0mm 87% 0mm -20dBZ 32° 0% 0.13mm - - 10m/s
10:00
1022hPa 812J/kg 0% -3.6°C 0% 0% 50% 0mm 88% 0mm -20dBZ 42° 0% 0.13mm 6.6m/s 5.1m/s 10m/s
11:00
1022hPa 803J/kg 0% -3.6°C 0% 0% 38% 0mm 89% 0.13mm -20dBZ 50° 0% 0.33mm - - 9.6m/s
12:00
1022hPa 794J/kg 0% -3.7°C 0% 0% 27% 0mm 89% 0.27mm -20dBZ 57° 0% 0.54mm - - 8.8m/s
13:00
1022hPa 785J/kg 1% -3.7°C 0% 0% 15% 0mm 90% 0.4mm -20dBZ 61° 1% 0.75mm 7.8m/s 6.6m/s 7.9m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account