A yellow weather warning for thunderstorms has now begun and Cornwall is bracing itself for yet further heavy rain after experiencing flash-flooding yesterday.
One of the worst hit places was Lanner, where the road became a river and a photo taken by Ben Pascoe shows people having to wade through the water that comes up to their knees.
Also affected was Ponsharden between Penryn and Falmouth, which was said to have heavy surface water, while there were also treacherous driving conditions at the bottom of Arch Hill in Truro, which was described by one driver as "almost impassable."
Some localised flooding could also been found around the Norway Inn at Perranarworthal.
Flash-flooding at Lanner. Photo: Ben Pascoe
The Met Office has warned that today some places could see as much as 20mm of rain could fall within an hour with possibly 30 to 40mm of rainfall in around three hours.
A yellow weather warning has been issued for Cornwall that began at 11am and remains in place until 8pm this evening.
The warning extends to the whole of the south of England.
The Met Office's warning impact matrix deems the warning to have a medium likelihood and low impact.
This means that there may be some short lived disruption to day-to-day routines in affected areas, while incidents would be dealt with under ‘business as usual’ response by emergency services.
Some transport routes and travel services may be affected with some journeys requiring longer travel times.
In terms of what to expect, the Met Office says:
- There is a good chance driving conditions will be affected by spray, standing water or hail, leading to longer journey times by car and bus
- Delays to train services are possible
- Perhaps damage to a few buildings and structures from lightning strikes
- Some short term loss of power is possible
A Met Office spokesperson said: “Heavy showers and thunderstorms are expected to develop quite quickly later on Friday morning, but peaking during the afternoon for many, before probably becoming more restricted to the southeast and south coastal counties towards evening.
"Some places will miss the heavier rain, but other locations could see around 20 mm within an hour and perhaps 30 to 40 mm in around 3 hours, sufficient to cause issues on the roads.”
Here is the hourly forecast for various parts of Cornwall - and the weather differs quite dramatically depending on which part you are in, even by a few miles.
While Falmouth and Truro look like they could escape with just some light rain, there is heavy downpour forecast for Helston at 2pm.
On the Lizard Peninsula however the rain is expected to come later, being heaviest at 3pm in the St Keverne and Coverack area while The Lizard Village will have to wait until 8pm to see the worst of the weather.
Camborne looks like it could be one of the worst hit areas, with heavy rain forecast for 1pm, 2pm and again at 7pm - although just a couple of miles down the road in Redruth, residents can expect heavy rain at 2pm but are not expected to see the same downpours in the evening and they could even get some sunshine.
Penzance is forecast to get the main rain out of the way by 1pm, giving way to a brighter afternoon with some sunshine and showers.
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