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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#21
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Thanks for all that Chris, though the total here at my site on the NW
side of Penzance was 60mm overnight, though it was much less just to the south over Newlyn. We've subsequently had more rain today, so the total for the 24 hours to 21:00 this evening at my site in Penzance looks like being around 75mm. I think the press reports saying St Ives had 50% of their months rainfall overnight are using the far, far lower Camborne figure. Camborne was virtually unaffected by the storm in question, having much of it's rain during heavy bursts of rain during the evening of 24th. Apparently the £10m St Ives flood defence work was did 'just what it was intended to do' http://news.bbc.co.uk/1/hi/england/cornwall/8018312.stm I am sure the many businesses flooded, and the people evacuated from hotels in the early hours will be reassured by that. Quite frankly, the effect was much as the 2002 flood (when I recorded 84mm in Penzance) On 25 Apr, 18:59, "CHRIS KIDD" wrote: Looking at the radar rainfall totals (Friday 12Z to Saturday 12Z) in a bit more detail: The area west of St Ives had typically ~170mm with a maximum of 193mm ~4km SW of the town. Zennor had 136mm. However, very sharp E-W gradient with much lower totals to the East of St Ives - typically no more the 25mm. Similarly with Penzence - the centre of which the radar suggests had ~25mm, but a few km to the west in the 80-100mm range. The highest totals were just offshore to the NW of the coastline with up to 200mm - however, maybe brightband played a part here - this region is ~37km from the Predannack and assuming a maximum height of the freezing level to be ~2km puts it at the 3 degree beam elevation... Chris |
#22
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![]() "Graham Easterling" wrote in message ... Thanks for all that Chris, though the total here at my site on the NW side of Penzance was 60mm overnight, though it was much less just to the south over Newlyn. We've subsequently had more rain today, so the total for the 24 hours to 21:00 this evening at my site in Penzance looks like being around 75mm. I think the press reports saying St Ives had 50% of their months rainfall overnight are using the far, far lower Camborne figure. Camborne was virtually unaffected by the storm in question, having much of it's rain during heavy bursts of rain during the evening of 24th. [selective text snipping] Last night's high rainfall figures were not confined to Cornwall. St. Mary's (Isles of Scilly) notched up a noteworthy 54mm in 11 hours ending 25/0200Z and I believe another 20mm or so has fallen since, coming close to your total of 75mm, Graham. Does anyone know of the average April rainfall at St. Mary's? Nigel |
#23
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On 25 Apr, 20:48, "Nigel Paice" wrote:
"Graham Easterling" wrote in message ... Thanks for all that Chris, though the total here at my site on the NW side of Penzance was 60mm overnight, though it was much less just to the south over Newlyn. We've subsequently had more rain today, so the total for the 24 hours to 21:00 this evening at my site in Penzance looks like being around 75mm. I think the press reports saying St Ives had 50% of their months rainfall overnight are using the far, far lower Camborne figure. Camborne was virtually unaffected by the storm in question, having much of it's rain during heavy bursts of rain during the evening of 24th. [selective text snipping] Last night's high rainfall figures were not confined to Cornwall. St. Mary's (Isles of Scilly) notched up a noteworthy 54mm in 11 hours ending 25/0200Z and I believe another 20mm or so has fallen since, coming close to your total of 75mm, Graham. Does anyone know of the average April rainfall at St. Mary's? Nigel Approx 55mm I think - Philip's the one with exact figures. Graham Penzance |
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