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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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#1
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Windy last night, with gusts widely to 40mph in the far SW. Also mild,
with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance |
#2
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![]() "Graham Easterling" wrote in message ... Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issued before rather than after the event? Graham Penzance Graham But that would require some forecasting capability. :-) Roger |
#3
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Graham Easterling wrote:
Windy last night, with gusts widely to 40mph in the far SW. Also mild, with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance Flooding in this part of Cornwall, a combination of high tide and drains blocked by fallen leaves. Whatever caused it, the result was chaos on the local roads as many drivers tried to find an alternative route. http://www.falmouthpacket.co.uk/news...st_Co rnwall/ -- MCC 20/10/2009 10:14:41 |
#4
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On Oct 20, 9:08*am, Graham Easterling
wrote: Windy last night, with gusts widely to 40mph in the far SW. Also mild, with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. *Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance Serious heavy rain here in Plymouth region at the moment 10.15, Graham. http://www.metoffice.gov.uk/weather/uk/radar/ Was it a regional forecast? |
#5
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On Oct 20, 9:08*am, Graham Easterling
wrote: Windy last night, with gusts widely to 40mph in the far SW. Also mild, with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. *Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance There's one problem of the warnings site. It's a long way from the tip of Cornwall to the Tamar, then again to the Devon-Somerset/Dorset border and the broad brush approach of those large area warnings just can't cope. Eastern Cornwall has that heavy rain now (10.15) and so the warnings site has a spatially technically correct warning for the whole of Cornwall, but, as you say, it is past and gone in the far west. Whether the final rainfall amounts will justify a warning can be judged after this trough has passed. The weather radar does suggest bursts of very heavy rain, but that is only along a very narrow frontal band. It could get interesting here for a short while, as the wind is presently force 5/6 and there could be gale-force gusts in that narrow belt of steep uplift. Trees are still in leaf. We'll soon see! |
#6
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On 20 Oct, 10:21, Len Wood wrote:
On Oct 20, 9:08*am, Graham Easterling wrote: Windy last night, with gusts widely to 40mph in the far SW. Also mild, with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. *Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance Serious heavy rain here in Plymouth region at the moment 10.15, Graham.http://www.metoffice.gov.uk/weather/uk/radar/ Was it a regional forecast?- Hide quoted text - - Show quoted text - Yes I know, the thing is the warning is fine for Devon, but for Cornwall was affected from the early hours until 07:00 in the far west to 10:30 (in the far east). So giving a warning from 10:00 was incorrect. I've just returned from Mousehole, in sunshine. to speak to my visitors who had just changed their plans for a walk, due to the forecast. They've now set off in sunshine. As MCC says, there was flooding in west Cornwall - well before the period covered by the warning. In Penzance, along the prom due to the sea overtopping (spring tide, low pressure, rough sea). I didn't see any warning for coastal flooding. Graham Penzance |
#7
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On 20 Oct, 10:14, MCC wrote:
Graham Easterling wrote: Windy last night, with gusts widely to 40mph in the far SW. Also mild, with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. *Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance Flooding in this part of Cornwall, a combination of high tide and drains blocked by fallen leaves. Whatever caused it, the result was chaos on the local roads as many drivers tried to find an alternative route.http://www..falmouthpacket.co.uk/new..._rain_causes_f... -- MCC 20/10/2009 10:14:41- Hide quoted text - - Show quoted text - Yes, I rather suspect the events triggered the warning, OK for Devon I suppose! Still, now we have it warning the weather's rather nice www.nci-stives.org/basiccamera.htm Graham |
#8
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On 20 Oct, 10:14, MCC wrote:
Graham Easterling wrote: Windy last night, with gusts widely to 40mph in the far SW. Also mild, with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. *Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance Flooding in this part of Cornwall, a combination of high tide and drains blocked by fallen leaves. Whatever caused it, the result was chaos on the local roads as many drivers tried to find an alternative route.http://www..falmouthpacket.co.uk/new..._rain_causes_f... -- MCC 20/10/2009 10:14:41- Hide quoted text - - Show quoted text - I've just read the full article. I think the delays to the train service in/out of Penzance were probably due to the sea overtopping, rather than the rainfall. It was a big spring tide this morning around 06:00, and there was no particularly intense rain here. It's amazing how quickly everything has calmed down, showing that although the sea was rough, there was little real swell www.chapelidne.com/php/surf_report.php (only 6' currently at Sevenstones - though forecast to increase) Graham |
#9
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On Oct 20, 11:08*am, Graham Easterling
wrote: On 20 Oct, 10:21, Len Wood wrote: On Oct 20, 9:08*am, Graham Easterling wrote: Windy last night, with gusts widely to 40mph in the far SW. Also mild, with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. *Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance Serious heavy rain here in Plymouth region at the moment 10.15, Graham.http://www.metoffice.gov.uk/weather/uk/radar/ Was it a regional forecast?- Hide quoted text - - Show quoted text - Yes I know, the thing is the warning is fine for Devon, but for Cornwall was affected from the early hours until 07:00 in the far west to 10:30 (in the far east). So giving a warning from 10:00 was incorrect. I've just returned from Mousehole, in sunshine. to speak to my visitors who had just changed their plans for a walk, due to the forecast. They've now set off in sunshine. As MCC says, there was flooding in west Cornwall - well before the period covered by the warning. In Penzance, along the prom due to the sea overtopping (spring tide, low pressure, rough sea). I didn't see any warning for coastal flooding. Graham Penzance- Hide quoted text - - Show quoted text - It does seem very silly being as the warning was issued at 0800. I never understand why they don't look at the radar rainfall to give a better indication of timing for frontal rain. We are after all talking about nowcasting in such circumstances. Only rained for about an hour and a half here in Wembury SW Devon. No sun yet though. Len Len |
#10
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On Oct 20, 11:55*am, Len Wood wrote:
On Oct 20, 11:08*am, Graham Easterling wrote: On 20 Oct, 10:21, Len Wood wrote: On Oct 20, 9:08*am, Graham Easterling wrote: Windy last night, with gusts widely to 40mph in the far SW. Also mild, with a minimum of11.8C. 14.2mm of rain overnight, but it cleared eastwards around 08:00 with the cloud already starting to break. The overnight force 5-6 SE has now become a Force 2-3 S just behind the front. I see there's a heavy rain weather warning for Cornwall & the Isles of Scilly from 10:00-15:00. It's been & gone here, and will have cleared most of Cornwall by 10:00. *Heavy rain here was 04:00-07:00. The warning was issued at 08:00 - shouldn't it be issue before rather than after the event? Graham Penzance Serious heavy rain here in Plymouth region at the moment 10.15, Graham.http://www.metoffice.gov.uk/weather/uk/radar/ Was it a regional forecast?- Hide quoted text - - Show quoted text - Yes I know, the thing is the warning is fine for Devon, but for Cornwall was affected from the early hours until 07:00 in the far west to 10:30 (in the far east). So giving a warning from 10:00 was incorrect. I've just returned from Mousehole, in sunshine. to speak to my visitors who had just changed their plans for a walk, due to the forecast. They've now set off in sunshine. As MCC says, there was flooding in west Cornwall - well before the period covered by the warning. In Penzance, along the prom due to the sea overtopping (spring tide, low pressure, rough sea). I didn't see any warning for coastal flooding. Graham Penzance- Hide quoted text - - Show quoted text - It does seem very silly being as the warning was issued at 0800. I never understand why they don't look at the radar rainfall to give a better indication of timing for frontal rain. We are after all talking about nowcasting in such circumstances. Len Len- Hide quoted text - - Show quoted text - Nope that beats me too Len. I don't understand why the site directs one to the Environment Agency and the Highways agency but not to the rainfall radar, when the information you really need is when is it going to rain and how heavy is it likely to be? The only place to find that information is on the rainfall radar (OK, should be called the precipitation radar, but that's a different matter!). It's an obvious link and would be educational as well as informative as a nowcast. Next freebie on the site should be nowcast radar, of course, as the present radar is at least half-an-hour out of date. Easily done, not expensive for the MetO and there would be a real opportunity for involving the public more in the difficulties, but also the excitement of forecasting. |
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