Thread by @CleanAirLondon

#CodeYellow #AirPollution advisory for Monday-Wednesday in parts of London and then Wales and South West England. Probably PM2.5 but could include ozone. @BWallaceMP @DefenceHQ should warn military on endurance exercises cc @H_S_E uk-air.defra.gov.uk

#CodeYellow | Widespread MODERATE ozone and particle #AirPollution episode underway by Tuesday. Worsening sharply Wednesday and Thursday as winds turn easterly (bringing our fumes back to us with more from others). Check health advice and warn military on exercises cc @BWallaceMP

#CodeOrange alert | MODERATE ozone #AirPollution from Monday in London and building across much of southern UK by Wednesday. Possible #CodeRed in places by Friday. Nasty episode could continue until Sunday uk-air.defra.gov.uk

#CodeOrange alert | Massive ozone #AirPollution episode building in southern England and Wales from Wednesday to cover the whole UK by Saturday. Ozone is the most-irritant gas for humans. Check updates and health advice uk-air.defra.gov.uk

Ozone #AirPollution bad across southern England and Wales by Tuesday night and set to get worse, much worse, as we head to the weekend uk-air.defra.gov.uk/latest/measure…

#CodeOrange 4-6/10 MODERATE ozone #AirPollution episode building across southern England and Wales on Wednesday and extending UK-wide by Sunday. Possibly #CodeRed HIGH 7/10 on Friday on south coast and in London by Saturday uk-air.defra.gov.uk

Widespread MODERATE ozone #AirPollution by Wednesday evening 10 August 2022. Worse to come

#CodeOrange alert for MODERATE ozone #AirPollution episode underway across most of England and Wales. #CodeRed likely in southern England at times in places until Sunday. Official HIGH-VERY HIGH 10/10 #BlackAlert (for particles?) Monday in eastern England uk-air.defra.gov.uk

Please @BWallaceMP @DefenceHQ warn military on endurance exercises of dangerous levels of ozone #AirPollution across large parts of the UK until Monday. Risk of death. ***This is not a drill*** cc @H_S_E @JocelynCockburn

https://twitter.com/CleanAirLondon/status/1557634986546708480

11/... Excellent description of the ozone #AirPollution episode underway from @LondonAir HT @MayorofLondon londonair.org.uk/Londonair/Fore…

12/... @DefraGovUK reports official #CodeRed HIGH ozone #AirPollution already at #YarnersWood in South West England. They did *not* warn of it this morning. National #PollutionAlert may still be declared there today. Much worse to come cc @EllaRobertaFdn uk-air.defra.gov.uk

13/... Three official #CodeRed HIGH ozone #airPollution alerts triggered - HIGH in South West, South East England and then a national #CodeRed #PollutionAlert at #YarnersWood. No warning from @stevedouble or @metoffice this morning cc @GeraintDaviesMP uk-air.defra.gov.uk

Official #CodeRed HIGH 7/10 ozone #AirPollution in Southern England on Friday. Widespread MODERATE across large parts of the UK until Monday. More HIGH possible on Saturday. Remember - ozone is the most-irritant gas for humans cc @BWallaceMP @H_S_E uk-air.defra.gov.uk

#CodeRed bulletin 1pm Friday 12 August 2022 | #YarnersWood has triggered a national #PollutionAlert for South West England. @stevedouble's not published it yet cc @CommonsEAC @CommonsEFRA uk-air.defra.gov.uk/data-plot?site…

#CodeRed | Incredibly HIGH and widespread ozone #AirPollution in South West England and South Wales has triggered multiple #PollutionAlert. Still rising 4pm. #CardiffCentre #CharltonMackrell #ChilboltonObservatory #YarnersWood cc @GeraintDaviesMP uk-air.defra.gov.uk

#CodeRed 9pm bulletin Friday 12 August | Three zones triggered HIGH 7/10 #ozone #AirPollution. Five sites triggered 24-hour national #PollutionAlert. Inadequate warnings and responses from @stevedouble << Episode may worsen Saturday and linger to Tuesday uk-air.defra.gov.uk

Midnight bulletin 12-13 August 2022

#CodeRed | Official 24-hour #PollutionAlert for ozone #AirPollution in effect for many parts of southern England. More expected today. Maps don't predict or show breaches of 1-hr ozone threshold. UK will be choking for days << Has @DefraGovUK told media??? cleanair.london/app/uploads/CA…

20/… @stevedouble @DefraGovUK should be watching ozone #AirPollution reported by monitors such as #YarnersWood today cc @GeraintDaviesMP @CommonsEAC @CommonsEFRA @APPGairpoll

https://twitter.com/CleanAirLondon/status/1292129763167961093

Must-read by @ExpressNathan | Choking #smog cloud to cover UK express.co.uk/news/weather/1…

22/… #AirPollution alerts are in place by 4pm for Greater London, South East, South West, West Midlands regions at the following sites << More to come cc @ExpressNathan uk-air.defra.gov.uk/latest/alerts#…

23/… Hourly levels of #ozone are reported here uk-air.defra.gov.uk/latest/period_…. 180 ug/m3 triggers a 24-hr #PollutionAlert because it’s so dangerous

24/... Lots of useful resources here for those wanting to know more about #AirPollution episodes cleanair.london/hot-topics/cod…

#CodeRed 10pm | HIGH ozone #AirPollution in 7 UK regions (North Wales, London, South East, South Wales, South West, East Midlands, West Midlands). And legally required #PollutionAlert triggered at 10 locations. Still no media release from @DefraGovUK! cleanair.london/app/uploads/CA…

.@DefraGovUK hasn't sent a media release to journalists and weather reporters warning of HIGH ozone #AirPollution since 21 April 2011 when it splashed front pages. Seems they didn't enjoy attention and questions! cc @ExpressNathan uk-air.defra.gov.uk/news?view=149 & cleanair.london/app/uploads/CA…

.@DefraGovUK now publishes #InformationBulletins (normally used for statistical releases) on an obscure website used by experts (ie Defra UK Air) instead of sending a media release to journalists and weather reporters uk-air.defra.gov.uk/news

28/... Outcome vs forecast on Saturday 13 August 2022. @DefraGovUK @metoffice hadn't even mentioned HIGH in their forecast!

#CodeRed HIGH ozone #AirPollution expected in many areas again on Sunday (14/8/22). Possible again Monday before relief Monday evening-Wednesday as winds turn south westerly and rain arrives. Good summary from @LondonAir londonair.org.uk/Londonair/Fore…. See uk-air.defra.gov.uk

30/… Great visual from @m_parrington @CopernicusECMWF shows the second #OzoneBomb to hit the UK this summer << Will this be the pattern of the future? cc @DrGaryFuller @drdaveimperial

https://twitter.com/m_parrington/status/1558742018066731008

31/... Still no #PollutionAlert from @stevedouble after #NorthamptonSpringPark breached the 1-hr ozone #AirPollution legal threshold at 3pm and 4pm today. Presumably, he's hoping to miss the news cycle for @BBCNews @Channel4News @itvnews @ExpressNathan @adamvaughan_uk and others

32/... Shameful really. @stevedouble @DefraGovUK has waited till the 5pm breach at #NorthamptonSpringPark and another at #RochesterStoke. Still no #InformationBulletin for 14/8/22

33/... #CodeRed 7pm bulletin

34/... #CodeRed 10pm | HIGH ozone #AirPollution in #EastMidlands, #NorthWest and #Merseyside and at four monitoring sites by Sunday evening (and #Eastern earlier) 14 August 2022. Widespread MODERATE 4-6/10 in London uk-air.defra.gov.uk

35/... #CodeRed 24-hr #PollutionAlert in place in Eastern England till 5pm Monday. Episode continues Monday, with chance of HIGHs, lingers into Tuesday. VERY HIGH 10/10 #AirPollution in #Brighton #Eastbourne #Folkestone Sussex/Kent Wednesday cc @BWallaceMP uk-air.defra.gov.uk

36/… #CodeRed | Blooming heck. #Portsmouth #Plymouth have triggered national #PollutionAlert for ozone #AirPollution by 11am Monday 15/8/22 uk-air.defra.gov.uk/latest/alerts. This is bad. Very bad cc @portsmouthnews @Plymouth_Live @plymouthcc @portsmouthtoday

37/... #CodeRed 9pm Monday 15/8/22 | 24-hr #PollutionAlert in force for #Plymouth and #Portsmouth. Excellent description of this episode from scientists at @LondonAir

Official | #CodeBlack repeat #CodeBlack VERY HIGH 10/10 particle #AirPollution possible over London and South East England Wednesday and Thursday based on low probability of much European wildfire smoke hitting the UK << Check updates - it may happen! uk-air.defra.gov.uk

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