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• Microsoft PowerPoint - VOLCANIC ASH - NEPHANALYSIS.PPT

  Volcanic Ash – T+0 annotated satellite image Issued 0930 UTC on Wed 11 Dec 2013 VOLCICE1303 Exercise Katla eruption Low Confidence gh Confidence Airep report of Ash cloud considered to be unlikely given upper wind trajectories and available imagery. lcanic Ash can be seen in imagery tending northeast from Katla. This s been confirmed by ground based servation at Keflavik. © Crown copyright Met Office

• volcanicash-nephanalysis-1429027270issue.pdf

  Volcanic Ash – T+0 annotated satellite image Issued 1600 UTC on Tue 14 Apr 2015 -ASH detected from Snaefellsjokull by Keflavik C-band Radar to FL100. HIGH CONFIDENCE- HIGH CONFIDENCE- -Bright returns on satellite imagery are meteorological cloud and NOT ASH. LOW CONFIDENCE- - -Pilot report of ASH at N60 W020 at FL300 at 14/1530Z. -Report not supported by satellite imagery or prevailing wind observations. © Crown copyright Met Office

• Microsoft PowerPoint - VOLCANIC ASH - NEPHANALYSIS.PPT

  Volcanic Ash – T+0 annotated satellite image Issued 0930 UTC on Wed 11 Dec 2013 VOLCICE1303 Exercise Katla eruption Low Confidence High Confidence Volcanic Ash can be seen in imagery Extending northeast from Katla. This has been confirmed by ground based Observation at Keflavik. Airep report of Ash cloud considered to be unlikely given upper wind trajectories and available imagery. © Crown copyright Met Office

• volcanicash-nephanalysis-1523635277issue.pdf

  Volcanic Ash – T+0 annotated satellite image Issued 1530 UTC on Fri 13 Apr 2018 EXERCISE EXERCISE HIGH CONFIDENCE- Clear VA signal in IMO Mobile LIDAR to 20KM LOW CONFIDENCE- PIREP reported VA at FL220. Ash not discernible on imagery, and outside expected area from VA modelling. LOW CONFIDENCE- Areas of broken to overcast cloud north and northwest of Iceland is preventing identification of discernible ash. © Crown copyright Met Office

• volcanicash-nephanalysis-1551348093issue.pdf

  Volcanic Ash – 1000 UTC annotated satellite image Issued 1000 UTC on Thursday 28 February 2019 HIGH CONFIDENCE- Clear VA signal 28/0805 UTC to FL300 in mobile LIDAR LOW CONFIDENCE- Skies covered with low-level meteorological cloud in vicinity of summit, affording poor view of discernible ash. LOW CONFIDENCE- PIREP reported VA at FL320 at 28/0900 UTC. Ash not discernible on imagery. © Crown copyright Met Office

• volcanicash-nephanalysis-1599829370issue.pdf

  EXERCISE EXERCISE EXERCISE VOLCICE Volcanic Ash T+0 annotated satellite image Issued 1230 UTC on Fri 11 Sep 2020 HIGH CONFIDENCE ✄ PIREP report of VA plume visible to NE. HIGH CONFIDENCE ✁ IMO ground-based radar now measures VA plume 9-12km. x HIGH CONFIDENCE ✂ VA plume top more clearly discernible above meteorological cloud. © Crown copyright Met Office

• volcanicash-nephanalysis-1529078477issue.pdf

  Volcanic Ash – T+0 annotated satellite image Issued 1600 UTC on Fri 15 Jun 2018 HIGH CONFIDENCE- VA signal 15/1445 UTC over Grimsvotn to FL140 in groundbased radar in eastern Iceland. LOW CONFIDENCE- Skies covered with low-level meteorological cloud in vicinity of summit, affording poor view of discernible ash. LOW CONFIDENCE- PIREP reported VA at FL320 at 15/1500 UTC. Ash not discernible on imagery. © Crown copyright Met Office

• volcanicash-nephanalysis-1426588389issue.pdf

  cloud. HIGH CONFIDENCE- IMO radar confirms ongoing eruption. IMO radar and lidar observations confirm plume locations close to source. © Crown copyright Met Office

• Microsoft PowerPoint - VOLCANIC ASH - NEPHANALYSIS.PPT

  Volcanic Ash – T+0 annotated satellite image Issued 0500 UTC on Wed 13 Aug 2014 TEST TEST TEST HIGH CONFIDENCE VA discernable on satellite imagery and for previous 5 hours LOW CONFIDENCE PIREP report of VA at FL260 but not discernable on imagery. HIGH CONFIDENCE VA discernable on Stornoway LIDAR FL240-FL280 MEDIUM CONFIDENCE VA discernable in this area 2 hours ago but currently obscured by cloud © Crown copyright Met Office

• uk_monthly_climate_summary_202001.pdf

  January 2020 The averaging period used for the following assessment was 1981-2010. At the start of January, high pressure lay over southern parts of the UK, bringing settled weather but generally with plenty of cloud. This gradually moved away south-eastwards allowing frontal systems in from