Stormy UK weather - Twitter Q&A
Chris Fawkes took your questions in a Twitter Q&A on the stormy weather in the UK. Here's the transcript:
Question from @NordicLaura: Is there a dry spell on its way?
Chris answers: There are no lengthy dry spells coming up over the next fortnight or so....last time we had high pressure was around 5th Dec.
Question from @parregcc: With the forecast of arctic air flowing down across the states will this mean our rain / storms are likely to continue?
Chris answers: Yes the cold air in the US is flowing into Atlantic and strengthening the Jetstream which is bringing us the stormy weather.
Question from @btabta52: Any sign of the Jetstream moving north?
Chris answers: No! The Jetstream is stuck because of the 'diffluent block' pattern to the west of Canada - it shows no sign of breaking down.
Question from @brogey67: Can all of this current weather point towards climate change once and for all?
Chris answers: No one event can be attributed to climate change but some think Jetstream could become slower to change bbc.in/1exKinJ
Question from @sscloud47: How 'strange' has the weather been in the UK during the past few months?
Chris answers: It's really unusual to get so many very deeply lows affecting the UK in winter with no breaks in between.
Question from SueAllan2: Is somewhere else having a drought while we have all this rain? Only so much water in the world.
Chris answers: Yes. Part of the blocked weather pattern has brought very dry weather to west US with ongoing drought in California.
Question from @BrixFest: Will the rain EVER stop??!!
Chris Answers: Yes!
Question from @paulpalmeruk: Are we looking at a repeat of 2012 with wet weather all summer?
Chris Answers: Let's hope not. Seasonal forecasting is still in infancy so it's too early to say what our summer will look like.
Question from @No1Shamrock: My kids would like to know if there is any hope of snow days this Winter?
Chris Answers: Nothing cold on the horizon - head to Scottish ski resorts, they're having one of their best years ever!
Question from @bluewhyte: When was the last time we had a string of storms & low pressures like this? Why so destructive this time?
Chris answers: The low pressures have been unusually deep this year with southwest winds, so SW England and S Wales have been hit hard.
Question from @Heavenly_Tiers: Do you think mild summers and wet winters will continue from now on?
Chris answers: There are always variations in our weather patterns year to year - I remember Jan 2010 when I skied in Southern England!
Question from @stew_marshall: What influences the position of the Jet Stream? And is there any sign of it moving/slowing in the near future?
Chris answers: Our jetstream is powered by temperature contrasts, which in turn creates enormous pressure gradients 6 miles up!
Question from @daveyl41: Does it look like we will get away without any major snowfall this winter now?
Chris answers: There's nothing cold on the horizon, although we could see some hill snow at times.
Question from @scotbot: How big a role are Rossby Waves having on our recent weather?
Chris answers: Rossby Waves are the big loops in the Jetstream - the bigger the loops are the more likely the jet is to be very slow to change.
Question from @KieranFields: Do you think we'll get snow this winter? Or is it just going to be a wet and windy winter this year?
Chris answers: I'm a big snow fan, but I think the weather pattern is going to stay mild, wet and windy sadly!
Question from @LeePople: You state these storm come from the USA. How are they born or begin there?
Chris answers: Low pressures begin off E coast of US where there are huge temperature contrasts at the moment & develop beneath powerful jet.
Question from @seano12uk: Are we likely to see the same cold weather as the US east coast in the UK?
Chris answers: No the cold in the US has been powering our jetstream bringing us continuing stormy weather, not cold.
Question from @Varcs: Is there any way of predicting when the jetstream will change its position?
Chris answers: I'm looking for changes in the Jetstream position west of Canada, once that shifts we could see a change a few weeks later here.
Question from @TheTalkingHome: Are there loads of different jet streams or variations across the world?
Chris answers: There are different jets; nocturnal, Somali, equitorial easterly jet, polar night jet & Jet from the Gladiators.
Question from @Aliforsaints: In terms of stats, just how awful has this spell of dreadful weather been?
Chris answers: bbc.co.uk/news/25966889 I reckon England has had wettest winter since 2007 already! (All of February's rainfall to add yet)
Question from @julesm2211: If the stream stays in its current state, what effect will it have on the spring/summer weather?
Chris answers: When the sun starts heating the northern hemisphere the Jetstream is bound to change position.
Question from @RichSwitch: Forecasting has improved thanks to computers and math models: what aspect of modelling is the next big one to crack?
Chris answers: Weather models are always limited by the power of available super computers...perhaps quantum computers will help?
Question from @coll1gan1888: Is it worth showing a longer forecast & involve Atlantic Show the systems out there as where getting these lows 1 after another?
Chris answers: Yes I've been using the satellite pictures showing storm development from east US coast all week!
Question from @hack3_r: Do you think London will face snow this year?
Chris answers: As the days grow longer, the cold grows stronger! Here's hoping for some snow.