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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

.   Why can't I find the fog map layer? We have had a significant amount of feedback regarding Fog Map Layers. Fog has traditionally been on a combined map layer with cloud base. Having had feedback about this map layer we will bring forward implementation of a map layer to highlight where fog is forecast

Volcanic Ash – T+0 annotated satellite image Issued 1500 UTC on Tue 12 Aug 2014 EXERCISE EXERCISE EXERCISE HIGH CONFIDENCE -VA discernable on imagery - VA plume observed to FL330 by IMO C-Band radar. LOW CONFIDENCE -PIREP report FL160 BUT not discernable on imagery. MEDIUM CONFIDENCE -Cloud obscuring ash layers -VA was discernable in that location on earlier images EXERCISE EXERCISE © Crown copyright Met Office

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

Volcanic Ash – T+0 annotated satellite image EXERCISE VOLCICE 2014/05 EXERCISE VOLCICE 2014/05 Issued 1045 UTC on Wed 18 June 2014 EXERCISE VOLCICE 2014/05 EXERCISE EXERCISE MEDIUM Thick layers of cloud obscuring any VA to west of Iceland EXERCISE IMO- radar report of ash to FL200 HIGH LOW PIREP report of ash at FL180 not visble on satellite © Crown copyright Met Office

Volcanic Ash – 1015 UTC annotated satellite image Issued 1030 UTC on Tue 13 Dec 2016 HIGH CONFIDENCE- IMO report discernible volcanic ash from Katla at 08:37 UTC. The plume has been observed and is rising up to 12 km (+/- 1.5KM). The plume is seen by the fixed radar in Keflavík. LOW CONFIDENCE- Eruption site and downwind plume obscured by persistent meteorological cloud layers © Crown copyright Met Office

Volcanic Ash – 1145 UTC annotated satellite image Issued 1230 UTC on Friday 14 December 2018 HIGH CONFIDENCE- Clear VA signal 14/0900 UTC at FL100 in mobile LIDAR LOW CONFIDENCE- Skies covered with extensive meteorological cloud in vicinity of summit, affording poor view of discernible ash. LOW CONFIDENCE- PIREP reported VA at FL300 at 14/1030 UTC. Ash not discernible on imagery. © Crown copyright Met Office

Volcanic Ash – T+0 annotated satellite image Issued 1600 UTC on Tuesday 8 th April 2014 EXERCISE VOLCICE EXERCISE VOLCICE MEDIUM Extensive cloud cover obscuring VA. LOW HIGH IMO report Ash plume observed by ground radar – estimated plume height 17km - VA evident in imagery. Pirep – thin layers between FL150 and FL180 – not visible on imagery EXERCISE VOLCICE © Crown copyright Met Office

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

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