Page 87 of 307
yellow, orange and red respectively - and indicate regions with relatively good seasonal prediction skill. Regions with ROC score between 0.6 and 0.7 show skill at lower levels but still better than guessing or use of climatology. Grey or light blue shading is used when scores are below 0.6 (i.e. near or below to the 0.5 'no-skill' threshold, suggesting forecasts in these regions are currently little better than guesswork).
be locally heavy with cumulonimbus cloud and thunderstorm activity. More organised rain or showers are likely to affect the far southwest later in the day. Winds will be light inland during the morning but will strengthen to moderate or fresh levels later, becoming strong along some coastal areas
volcano will erupt in Iceland? The eruptions of Eyjafjallajökull and Grímsvötn in 2010 and 2011 respectively, are unlikely to be considered out of the ordinary in light of the historical record. It could be argued that up until recently, we have been fortunate: for example during the Grímsvötn
. Elsewhere, the majority will remain dry, though one or two light showers are possible, particularly over eastern England. The increased breeze may actually help to brighten things up in some areas, breaking up the cloud and allowing for occasional sunny spells. Temperatures and how it will feel
, but it is going to be weakening as it does so. So increasingly, that rain will be fairly light and patchy. There'll be some sunny spells developing up towards the north and west, with a scattering of showers and quite prolonged sunshine still holding on down towards the south and east. “It's here where
be locally heavy with cumulonimbus cloud and thunderstorm activity. More organised rain or showers are likely to affect the far southwest later in the day. Winds will be light inland during the morning but will strengthen to moderate or fresh levels later, becoming strong along some coastal areas
will attempt to move into the UK from the southwest on Friday morning, heralding the end of this impactful cold spell. Increasing cloud and light rain, perhaps preceded by a little snow, will begin to affect northwestern then northern parts of the UK through the weekend. Here, temperatures will be back
forecasters, advisors and specialist scientists on the interpretation and impact of the weather during an emergency. If required, Met Office experts are ready to attend or teleconference into tactical/strategic command and control centres. The Met Office’s Public Weather Service provides a range
these features. 5.1.1 Method 1 (RA) This is the most basic method and is a simple 12-month running average. At each hour in the time-series calculate the 1-year average of the baseline mass mixing ratios centred on this hour (y mc ). This is the longterm trend component, subtracting this from the actual
expected throughout the period. This is done using a dynamical seasonal prediction computer model of the global atmosphere-ocean system developed in the Met Office’s climate research division, the Hadley Centre. The seasonal prediction model is based on a Met Office Hadley Centre climate model
Previous