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• volcanicash-nephanalysis-1481635751issue.pdf

  Volcanic Ash – 1315 UTC annotated satellite image Issued 1330 UTC on Tue 13 Dec 2016 LOW CONFIDENCE- Eruption site and downwind plume obscured by thick meteorological cloud layers. Further, due to very bad weather conditions the data from the radar is not very clear. IMO estimate the plume height to still be around 12KM. © Crown copyright Met Office

• volcanicash-nephanalysis-1453837577issue.pdf

  1900 UTC Jan 26 2016 annotated satellite image Issued 1915 UTC on Tuesday 26 Jan 2016 EXERCISE LOW CONFIDENCE- Pirep reports an area of ash to west of Katla but cloud cover in the area means we are unable to verify. HIGH CONFIDENCE- Ash plume clearly discernible in imagery extending northeast of Katla. EXERCISE EXERCISE © Crown copyright Met Office

• Microsoft PowerPoint - VOLCANIC ASH - NEPHANALYSIS.PPT

  Volcanic Ash – T+0 annotated satellite image Issued 1400 UTC on Tue 19 Nov 2013 EXERCISE KRAFLA eruption theoretical example HIGH VA visible on imagery MEDIUM VA partly obscured by high level cloud LOW VA reported from AIRREP at 1000UTC but little evidence on imagery and forecast trajectories show unlikely © Crown copyright Met Office

• Microsoft PowerPoint - VOLCANIC ASH - NEPHANALYSIS

  Volcanic Ash – T+0 annotated satellite image Issued 0930 UTC on Sunday 31st Aug 2014 HIGH CONFIDENCE- -No ash detected by Radar or by field scientists in the vicinity. No explosions reported. -No lightning detected by Met Office ATDNet, implying no eruptive plume. -Ash is currently not discernable on geostationary or polar orbiting satellite images due to frontal cloud. © Crown copyright Met Office

• volcanicash-nephanalysis-1515493690issue.pdf

  Volcanic Ash – T+0 annotated satellite image Issued 1030 UTC on Tue 09 Jan 2018 EXERCISE VOLCICE LOW CONFIDENCE- VA suggested by model winds and plume, however hard to discern due to cirrus cloud HIGH CONFIDENCE- VA observed by radar to 24km near source, moving NE at 70kt. Plume visible on imagery. EXERCISE VOLCICE © Crown copyright Met Office

• volcanicash-nephanalysis-1489488188issue.pdf

  Volcanic Ash – 1030 UTC annotated satellite image Issued 1030 UTC on Tue 14 Mar 2017 LOW CONFIDENCE- Eruption site and plume obscured by dense layers of meteorological cloud. HIGH CONFIDENCE- IMO reports discernible volcanic ash from Katla at 08:30UTC. The plume has been seen from fixed radar rising to 18km +/- 0.8km. © Crown copyright Met Office

• Microsoft PowerPoint - VOLCANIC ASH - NEPHANALYSIS.PPT

  Volcanic Ash – T+0 annotated satellite image Issue 0730 UTC on Sun 17 Aug 2014 TEST TEST TEST HIGH CONFIDENCE TEST IMO radar reports VA FL300-FL370 LOW CONFIDENCE TEST PIREP of VA at FL280 but not discernable on imagery due to cloud obscuration HIGH CONFIDENCE TEST VA discernable on satellite imagery © Crown copyright Met Office

• volcanicash-nephanalysis-1423584071issue.pdf

  Volcanic Ash – T+0 annotated satellite image Issued 1500 UTC on Tue 10 Feb 2015 EXERCISE VOLCICE1502 Chart information for EXERCISE purposes only HIGH CONFIDENCE- - High confidence of IMO radar discerning VA to 12km. MEDIUM CONFIDENCE- Moderate confidence of partial ash signal being discernible in satellite imagery (within ellipse), although partly masked by meteorological clouds. © Crown copyright Met Office

• Microsoft PowerPoint - VOLCANIC ASH - NEPHANALYSIS.PPT

  Volcanic Ash – T+0 annotated satellite image EXERCISE VOLCICE 1404 EXERCISE VOLCICE 1404 Issued 1000 UTC on Tue 13 May 2014 EXERCISE VOLCICE 1404 EXERCISE EXERCISE EXERCISE MEDIUM Thick layers of cloud obscuring any VA to southwest of Iceland LOW PIREP report of ash at FL180 not viisble on satellite HIGH IMO- radar report of ash to FL035 © Crown copyright Met Office

• Microsoft PowerPoint - VOLCANIC ASH - NEPHANALYSIS

  Volcanic Ash – T+0 annotated satellite image EXERCISE EXERCISE EXERCISE VOLCICE 2014/06 Issued 1445 UTC on Tue 08 Jul 2014 EXERCISE EXERCISE EXERCISE HIGH CONFIDENCE- IMO- radar detects ash to FL460 MEDIUM CONFIDENCE- Thick layers of cloud obscuring any VA to south of Iceland LOW CONFIDENCE- PIREP report to ash at FL180 not visible on satellite. © Crown copyright Met Office