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Showing content with the highest reputation on 10/06/14 in all areas

  1. 17 points
    Supercell over France last night, image from Weather Watch UK's Facebook page - Awesome!
  2. 14 points
    This is the closest I came to seeing any forks in the sky today
  3. 8 points
    Just for further reading: When two hypercells collide (like what happened in Woking on 10th June 2014) it can create an ULTRACELL, with inverted lightning and vacuum clouds. Sometimes (where conditions allow) two or more ultracell storm systems can collide to form a MEGACELL. This storm system brings an advanced risk of micro-hurricanes - which are only the size of a chip, but have magnetic winds which spin in two directions at once. These storms are quite rare though, and have only occurred once - and that was over Woking in June in 2014. (From Wikipedia I think)
  4. 6 points
    Lightning striking a power cable near Jedburgh in the Borders from the earlier storm.
  5. 6 points
    Forgot about the time differences. Yes, the UK is one hour behind France, so that would be 2pm UK time. Oh, btw, amazing video of the German supercell:
  6. 6 points
    Some nice lightning from today's beast storm captured at the Pinkpop festival in Heerlen, The Netherlands... "Onweer" means "Thunderstorm".
  7. 6 points
  8. 5 points
    Some shots from the thunderstorm earlier, gone dark again now 3 thunderstorms in a row now in summer, good grief.
  9. 5 points
    Last chance of storms for the UK today. The very high levels of moisture have exited the UK. The high tropopause which allows storms to build to very high levels has come down as the low pressure to our west moves in. On the other hand we have some quite steep mid level lapse rates moving into the UK and a some surface based instability. Forecast SkewT's show a bit of a cap at 800hpa which relaxes as the day goes on. 500hpa charts show some vorticity advection moving across the UK. NMM suggest that the cooler air aloft might be behind that vorticity advection. We should however note the presence of a low level jet (925hpa winds stronger than 850hpa winds) Any strong updraft could lift that low level vorticity. There is also some very dry air coming in aloft which would help to enhance any convection. Over all there is a risk of some heavy showers with low tops reducing the risk of lightning. The low level vorticity suggests a risk of weak tornado development. Upper level wind shear will be leaving the UK, but there might be enough for an isolated mesocylone towards the south and east of the shower boundary. Although the Birmingham tornado developed out of environment with low tops and a low level jet the temperatures and dew point that day were a lot higher, so risks are likely to be small. Wales through to East Anglia and northwards most likely to catch a shower.
  10. 4 points
    Crash of thunder. My first decent thunderclap of 2014
  11. 4 points
    I'm gonna forecast an isolated but very large cell plopping itself unexpectedly over the southeast, surprising everyone an making for some spectacular photography. And if it doesn't happen I'm gonna draw some lightning with a biro and take photos of that. I expect a gold award if I am correct and to be promoted to weatherman of the year. :-)
  12. 4 points
    Brilliant outputs this morning!!ecm as I mentioned yesterday has this habit of being too amplified and this morning backs up my point as the high has pushed further east for this weekend!!come this evening I reckon it will look like the gfs and ukmo with the high slap bang im the middle of the uk!!
  13. 4 points
    I just made a post that vanished. I assume it wasn't removed. The ECM ops has the subtle difference with the HP to the west of the UK. A quick look though the looking glass at the ens monthly means suggesting a more westerly, unsettled flow down the line.
  14. 4 points
    Good morning all, A Summery outlook from all the 00z runs with pressure rising from the south across the UK through this week. Very little energy across the Atlantic showing by the end of the week as the blocking high takes hold. No heatwave yet with the surface flow around the top of the high off the Atlantic but warm enough for many i would think with low 20'c widely away from the far nw. Once the showery activity dies away over the next day or so we could be looking at quite a dry and settled week to 10 days fairly widely. http://www.wetterzentrale.de/pics/MS_London_avn.png http://www.wetterzentrale.de/pics/MS_Manchester_avn.png http://www.wetterzentrale.de/pics/MS_Aberdeen_avn.png a nice looking gfs mean too at day 10.
  15. 4 points
    Top of the morning folks and welcome to Sun Block weekend with the GFS. The 500mb anomaly on Sunday has a swathe of warm air Greenland to Scandinavia with associated ridges along the eastern seaboard and the other over the UK both aligned SWS. Cold air still Arctic and Scandinavia eastwards. The synoptic analysis is quite simple Saturday through Tuesday. On Saturday the HP is just NW of Ireland and thereafter centred over Scotland 1030mb. Giving partly cloudy conditions for first couple of days then clear skies and a very slack flow over all of the UK. Temps are very warm. These are for 12z Saturday mid 60s to 70F except N. Scotland. From then on gradually warming until Tuesday is positively hot with temps at midday low to mid 70s. Olez
  16. 4 points
    Hi all, I am currently in Fontainebleu France about 50mins south of Paris and have just witnessed a 3hr electrical storm moving north. Never seen anything like it before the lightning did not stop for the entire time. Have the whole thing on camera plus stills if anyone is interested. There is still strong winds and a few forks continuing now but it has to be the most amazing storm I have ever seen. The attached picture was taken approximately 4hrs before the storm began.
  17. 4 points
    Just had a downpour of epic proportions. A few flashes of lightning and some loud thunder in the distance. Think it is getting closer as the rain is picking up again.
  18. 3 points
    Torrential rain here too, here are some photos, looking north and south:
  19. 3 points
    Another view of the Paris supercell (via George Papavasileiou)! Amazing base and updraft structure! @reedtimmerTVN pic.twitter.com/wilQrmjLjH
  20. 3 points
    The GEFS 0z mean indicating a much needed drier period is just about to begin and could last a while too with high pressure becoming slow moving across the UK bringing plentiful dry and pleasant conditions. Its exact position will affect where the best of the warmth will be experienced. The general idea seems to be that the E and SE will be best for warmth this week. On into the weekend the high will slip westwards shifting the warmest temperatures to the S and SW. Makes a change to slow moving low pressure
  21. 3 points
    I've just updated my forecast to a supercell, no wait two supercells - travelling in opposite directions and colliding over Woking to make a HYPERCELL - with rotation on all 3 axis (which doesn't exist yet but will by tonight).I thank you all.
  22. 3 points
    You're asking for big trouble by using your IP address as a direct link, even more so by pasting it in to a public forum.
  23. 3 points
    Some superb summery outputs this morning with UKMO finally dropping the idea of some cooler temperatures during the weekend t96 850's on UKMO have not updated GFS also looking very good with the first hints of a breakdown not appearing until day 10 though the ensemble doesn't support the breakdown as I shall post below As I said above the ensemble isn't supporting a breakdown at day 10
  24. 3 points
    Models at day 6 GFS UK high UKMO High centred over Ireland, again decent GEM Better than previous runs with the high in greater control. GFS ens Even at this timeframe the GFS ens want to keep high pressure firmly in charge with mean 850s above average (+8-10C). If the GFS ens are right then this high could stick around for a considerable amount of time. Earliest signs of cool northerly setting up is from the GEM, which is now late next Tuesday into Wednesday. It's getting pushed back again. Looks increasingly likely that we will have at least a week of fine, settled and warm weather, touching very warm at times.
  25. 3 points
    I'm actually gutted now that all we have had after two significant Spanish plume risk days (both of which were focused initially on our area) was three rumbles and seen no actual lightning and now getting excited about even getting one flash. It's actually depressing how (sorry to swear but strength of feeling) SH## out weather is. These German and Benelux storms blow anything we're ever gonna get out of the water. I'm seriously thinking about moving because the pointless and often overblown hype surrounding our British storm 'events' really gets to me these days. Can even get storms when I chase. What's the point. I might go fun something more likely to look forward to... (Have said piece... Off to sulk for next three weeks...)
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