Search results (1,997)

Volcice Exercise – 1230 UTC annotated satellite image Issued 1230 UTC on Tue 15 Dec 2015 EXERCISE LOW CONFIDENCE- VA plume observed by C-band radar in Keflavik rising to 7km, but cloud covering the volcano LOW CONFIDENCE- Cloud to the north of the volcano is masking any ash emitted EXERCISE EXERCISE © Crown copyright Met Office

Volcanic Ash – T+0 annotated satellite image Issued 1550 UTC on Fri 19 Oct 2018 VOLCICE EXERCISE LOW CONFIDENCE- Meterological cloud in vicinity of Kverkfjoll partially obscuring view of ash cloud. LOW CONFIDENCE- PIREP reported VA at FL180 at 19/1530 UTC. Ash not discernible on imagery. VOLCICE EXERCISE © Crown copyright Met Office

and so the wind speed within the cloud. Figure 11 Wind profile generated by the Cobbacombe Cross Doppler radar data Dual Polarisation Figure 12 Schematic of dual polarisation measurement A dual polarisation radar can retrieve more information about the nature of the target being observed. It does

and dry conditions across much of the UK, with sunny spells developing through the day. Inland areas may see some convective cloud build-up during the late morning and afternoon, but this is expected to be short-lived. Northern and northwestern Scotland will be cloudier, with showery rain likely

showers by the time it reaches northern Wales and northern England later in the afternoon. Blustery showers will follow into northern Scotland, where it will remain windy throughout the day. Elsewhere, conditions will be predominantly dry with sunny spells and variable cloud cover. There is a slight

in the north and west, and very gusty conditions over high ground. After a mild night, Sunday will feel warm and humid in brighter spells, especially in East Anglia and south-east England, where temperatures are likely to reach the low to mid 20°Cs. Cloud amounts will limit higher temperatures

into Monday night, cloud and more organised showers or rain will affect central, western, and southern Scotland, as well as northern England. Elsewhere, showers will become increasingly focused towards western coasts, while winds slowly begin to ease. Temperatures will be at or slightly above average

Volcanic Ash – T+0 annotated satellite image Issued 1000 UTC on Fri 14 June 2019 VOLCICE EXERCISE HIGH CONFIDENCE- IMO radar confirms ongoing eruption, although plume is overlaid with upper cloud. LOW CONFIDENCE- PIREP reported VA at FL300 at 14/0930 UTC but not discernable on imagery due to cloud cover. X VOLCICE EXERCISE © Crown copyright Met Office

). Overleaf are a series of plots showing the Gerrity Skill Score in relation to the agreed performance measure for forecast Cloud Base and Visibility at airports in receipt of 9, 24 and 30 hr TAFs. Ronaldsway (EGNS) has now been included alongside the other ’9hr North’ airports, but it is not included

. During the day a rain band pushed slowly south but for Wales, central southern and South West England it remained dry with sunny intervals and patchy cloud, the best of the sunshine was across Devon and Cornwall and parts of South Wales. It was a windy and cool day everywhere with moderate to fresh