Home |
Search |
Today's Posts |
![]() |
|
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. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
![]() |
|||
|
|||
![]() ================================================== ================== This posting expresses the personal view and opinions of the author. Something which everyone on this planet should be able to do. ================================================== ================== Just had a *very* close look at all the outputs for Tuesday/Wednesday's low from the latest GFS (1200) runs and it *potentially* looks very very nasty indeed for the time of year. We have the prospect of (a) Very heavy and prolonged rain to the north/northwest of the low giving the potential for flooding due to rapid run-off from hard ground. (b) Potential thunderstorms in unstable sector to the south of the low with obvious implications for outdoor activities and (c) A possibility of a "Sting jet" bringing a narrow swathe of storm force winds in the SW quadrant of the low. SW England is under obvious threat from this and with trees in full leaf the effects could be disasterous. I must stress that these are only possibilities which I *personally* rate at 50% of *one* of them coming off. It all depends on phasing of the upper trough with the developing low, and of course, timing. There is a very distinct possibility of later deepening which would place all the "action" in the North Sea. The 1200 GMT MetO global model run labelled "UKMO" on 'wetterzentrale' more than hints at this. So there it is a warning of the *possibilities*. Either way we can be much more certain (80%) as I said in my weekly forecast last thursday of the long dry spell over England and Wales finally coming to an end. Cheers, Will. -- " Come on England " ------------------------------------------------------------------------------- A COL BH site in East Dartmoor at Haytor, Devon 310m asl (1017 feet). mailto: www: http://www.lyneside.demon.co.uk DISCLAIMER - All views and opinions expressed by myself are personal and do not necessarily represent those of my employer. ------------------------------------------------------------------------------- |
#2
![]() |
|||
|
|||
![]()
(c) A possibility of a "Sting jet" bringing a narrow swathe of storm force
winds in the SW quadrant of the low. SW England is under obvious threat from this and with trees in full leaf the effects could be disasterous. Will, You are quite right about the effect of wind on fully-leafed trees. Only last Thursday while hacking round a local golf course, a friend and I both witnessed a 5-foot length of branch, complete with oak leaves crash to the ground in gusts of only 30kt or so. The loud 'crack' as the branch separated from the trunk is something I won't forget in a hurry. I would like to make it clear that this incident was not caused by one of my stray golf shots! It was quite likely that this part of the tree was unusually weak, but there were other smaller branches lying about with new leaf attached. Following a long period of light winds, any significant wind speeds now may well reinforce your thought stated above. Rainfall so far this month stands at 1.5mm after a couple of moderate showers (Friday evening and this afternoon). Nigel (Romsey, Hampshire) |
#3
![]() |
|||
|
|||
![]()
I can't seem to find Will's original post on the forum about Wednesdays's
Low. I would be interested to read it - can anyone point me in the right direction? Thanks, Jeremy "Nigel Paice" wrote in message ... (c) A possibility of a "Sting jet" bringing a narrow swathe of storm force winds in the SW quadrant of the low. SW England is under obvious threat from this and with trees in full leaf the effects could be disasterous. Will, You are quite right about the effect of wind on fully-leafed trees. Only last Thursday while hacking round a local golf course, a friend and I both witnessed a 5-foot length of branch, complete with oak leaves crash to the ground in gusts of only 30kt or so. The loud 'crack' as the branch separated from the trunk is something I won't forget in a hurry. I would like to make it clear that this incident was not caused by one of my stray golf shots! It was quite likely that this part of the tree was unusually weak, but there were other smaller branches lying about with new leaf attached. Following a long period of light winds, any significant wind speeds now may well reinforce your thought stated above. Rainfall so far this month stands at 1.5mm after a couple of moderate showers (Friday evening and this afternoon). Nigel (Romsey, Hampshire) |
#4
![]() |
|||
|
|||
![]()
Jeremy Handscomb wrote in message ...
:I can't seem to find Will's original post on the forum about Wednesdays's :Low. I would be interested to read it - can anyone point me in the right :direction? This was Will's post made at 22.32 on Saturday. Colin Youngs Brussels _______________________________ "Just had a *very* close look at all the outputs for Tuesday/Wednesday's low from the latest GFS (1200) runs and it *potentially* looks very very nasty indeed for the time of year. We have the prospect of (a) Very heavy and prolonged rain to the north/northwest of the low giving the potential for flooding due to rapid run-off from hard ground. (b) Potential thunderstorms in unstable sector to the south of the low with obvious implications for outdoor activities and (c) A possibility of a "Sting jet" bringing a narrow swathe of storm force winds in the SW quadrant of the low. SW England is under obvious threat from this and with trees in full leaf the effects could be disastrous. I must stress that these are only possibilities which I *personally* rate at 50% of *one* of them coming off. It all depends on phasing of the upper trough with the developing low, and of course, timing. There is a very distinct possibility of later deepening which would place all the "action" in the North Sea. The 1200 GMT MetO global model run labelled "UKMO" on 'wetterzentrale' more than hints at this. So there it is a warning of the *possibilities*. Either way we can be much more certain (80%) as I said in my weekly forecast last Thursday of the long dry spell over England and Wales finally coming to an end. Cheers, Will." |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Wednesday's Low | uk.sci.weather (UK Weather) | |||
Tuesday's / Wednesday's low | uk.sci.weather (UK Weather) | |||
Wednesday's Low - Development underway | uk.sci.weather (UK Weather) | |||
Wednesday's Low | uk.sci.weather (UK Weather) | |||
Wednesday's Low | uk.sci.weather (UK Weather) |