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in the atmosphere, typically between 80 and 300 kilometres above the Earth’s surface. To see them, clear, dark skies are essential. Even thin cloud can obscure the subtle colours and movements of the aurora, while thick cloud makes sightings impossible. Light pollution from urban areas further reduces

of providing a value in the 0 to 1 (or 0 to 100% range) the data is categorized into to icing intensities. A comparison of the old Icing Potential and new Icing Severity fields is shown below: WAFS Icing Potential, FL240 WAFS Icing Severity, FL240 WAW trace light moderate severe It can be seen that the new

Thursday will begin with residual showers and isolated thunderstorms lingering across the southeast, gradually clearing through the morning. Western areas will see scattered, mainly light showers developing later in the day. Across central and eastern Scotland, and possibly far northeast England

settled conditions across much of the UK, with most areas enjoying dry weather and sunny spells. Temperatures will be close to the seasonal average, though it will feel pleasantly warm in the sunshine, especially where winds remain light. Eastern and southeastern England may see more in the way of cloud

Pacific. 3-Month Outlook December to February - Rainfall The latest statement from the NOAA Climate Prediction Centre / NCEP states that “La Niña is likely to continue through the Northern Hemisphere winter 2020-21 (~95% chance during January-March) and into spring 2021 (~65% chance during March-May

and cloudiness all consistent with this. The event has likely recently peaked and a gradual shift towards more neutral conditions should take place during the first half of next year. However, over the next few months there is ~95% chance of La Niña continuing. The latest NOAA Climate Prediction Centre

place during the first half of next year. The latest NOAA Climate Prediction Centre / NCEP statement (PDF) states that: “La Niña is likely to continue through the Northern Hemisphere winter 2020-21 (~95% chance during January-March), with a potential transition during the spring 2021 (~50% chance

temperature anomalies, trade wind strength, atmospheric pressure pattern and cloudiness all consistent with this. The event has likely recently peaked and a gradual shift into neutral conditions is likely, with the latest NOAA Climate Prediction Centre / NCEP statement (PDF) stating

of a La Niña event developing. 3-Month Outlook September to November - Rainfall According to CPC, the chance of La Niña developing in the period September-November is around 66%, rising to 74% in the early winter (November-January). However, other centres (such as BoM) have predictions which are much

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