After a calm, sunny start Cu very quickly developed over the land and by 10:30 there was a F3 sea breeze. By 11:00 there was some quite threatening cloud along the sa breeze convergence zone, this was pushed over Penzance around 11:30 as the north coast sea breeze became the dominant one. Just ahead of it the sea breeze became a F4 briefly. Around noon, after the blast of ‘sea’ air and the southward passage of a band of threatening cloud, the temperature was around 20C.

Then the cloud got pushed away to the south a dissipated, the wind varied form calm to F1-2 offshore, and the temperature shot up. now 24.5C under strong sunshine.

This was a fairly common sea breeze sequence, the south coast one dominant in the morning, the north coast in the afternoon. The first day that it looked like we might get a shower for quite a while. Places on the north coast have had virtually unbroken sunshine.

Graham
Penzance