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• PowerPoint Presentation

  conditions across the equatorial Pacific. Both NOAA and the Bureau of Metrology in Australia (BoM) have declared that La Niña is present. According to the latest forecasts, from the WMO Global Producing Centres for Seasonal Prediction, La Niña is the most likely outcome over the next few months

• PowerPoint Presentation

  to the Climate Prediction Centre, La Niña conditions are present with a La Niña Advisory issued. All indices are currently negative and point to La Niña conditions with some atmospheric response evident, with these conditions expected to remain over the coming few months, returning to neutral early

• PowerPoint Presentation

  that both oceanic and atmospheric indicators reveal borderline La Niña conditions still remain across the equatorial Pacific. Both NOAA and the Bureau of Metrology in Australia (BoM) state that La Niña is currently present. According to the latest forecasts from the WMO Global Producing Centres

• PowerPoint Presentation

  % likelihood in NOAA forecast). While forecasts looking this far ahead are inherently uncertain, particularly when issued at this time of year, there is a consistent message emerging from many international modelling centres. Much More Likely Below Normal Near-Normal Above Normal Likely Likely Much More

• PowerPoint Presentation

  conditions taking hold in the August to October period (60% likelihood in NOAA forecast). While forecasts looking this far ahead are inherently uncertain, particularly when issued at this time of year, there is a consistent message emerging from many international modelling centres. Much More Likely Below

• PowerPoint Presentation

  the likelihood of La Niña developing increases. By late autumn (October-November-December period), NOAA Climate Prediction Centre gives a 50- 60 % chance of a short-lived La Niña event while the likelihood of ENSO remaining neutral is around 40 %. In contrast, output from the Australian Bureau

• Met Office daily weather: More hot weather to come

  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

• Met Office daily weather: A mixed bag as we head into the weekend

  , where outbreaks of rain and drizzle are expected. Some rain may also affect parts of Wales and the southwest for a time. Elsewhere, cloud cover will be more variable, with a few isolated showers breaking out later in the day. While most of these will be light, there is a low risk that some could

• Aurora to be visible to parts of the UK tonight, but will it be clear?

  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

• Raindrops and radar

  . Radio waves emitted from a radar antenna travelled outwards at the speed of light, only bouncing back to the same antenna when they encountered an object. When the weather was clear, radar could quickly provide intelligence on the position of aircraft in the sky. When it was raining or snowing, echoes