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• PowerPoint Presentation

  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 / NCEP statement (PDF) states that: “La Niña is expected to continue through the Northern Hemisphere winter 2020

• PowerPoint Presentation

  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. For January–March, the likelihood of returning to ENSO-neutral conditions

• PowerPoint Presentation

  (November-January). However, other centres (such as BoM) have predictions which are much more finely balanced between ENSO-neutral and La Niña. Clearly, there is some uncertainty with predictions. Most likely is that ENSOneutral conditions will persist for the next couple of months, with any transition

• 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

• 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

• Aerodrome_forecast_TAF_decodepdf-1.Aerodrome_forecast_TAF_decodepdf

  = less than 50 metres visibility or CAVOK* 7 Significant weather -SHRA 'Light rain showers' See present weather table on METAR page for details; NSW = No significant weather 8 Cloud FEW005 SCT010 SCTO18CB BKN025 'Few at 500 feet, scattered at one thousand feet, scattered cumulonimbus at one thousand

• 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

• 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

• PowerPoint Presentation

  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

• 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