Search results (2,269)

London VAAC Quantitative Volcanic Ash charts Quantitative Volcanic Ash charts (QVA) are produced in accordance with International Civil Aviation Organization (ICAO) Annex 3 requirements and are provided as well as the London Volcanic Ash Advisory Graphics (VAG) and Advisories (VAA). The lowest QVA

to the north-west due to an upper-level inversion. A further feature of this event was the sustained nature of the strong winds, with the fronts stalled across Scotland due to the blocking area of high pressure across Scandinavia. The chart below shows hourly maximum gust speeds at Leuchars (Fife

This week sees an improving picture, with high pressure becoming increasingly dominant over the weekend and bringing dry, more settled conditions for many. The change does happen slowly though. Wednesday sees a chilly start, with a warm front bringing showers to northeastern and eastern areas

As low pressure parks up in the southwest for the next week, more unsettled weather is expected for many. However, mild southerly air means there will still be some warm sunshine on offer.

This weekend  Over the weekend, rain and showers are most likely across western parts of the UK and it will be windy at times too. A yellow warning for rain has been issued for much of Northern Ireland and western Scotland.   In the latest weekend weather forecast Alex Deakin said: “Low pressure

) These charts provide the observed pressure information and position of fronts and are produced every six hours. They provide a graphical representation of the weather without the addition of plotted data and are most useful for general research into the weather situation on any given day. The series

After last week’s sunny and settled weather, this week low pressure is in control bringing spells of wet and windy weather to many across the UK.

Met Office has issued a yellow weather warning that is currently in force, as a deep area of low pressure brings spells of very heavy rain to much of England and Wales.  Chief Meteorologist, Neil Armstrong, said: “Many people will have noticed a big change in the weather this week, as last week’s

Saturday 0000 – 2359 Latest info 👉 https://t.co/QwDLMfRBfs Stay #WeatherAware⚠️ pic.twitter.com/IyIVoKPm5J — Met Office (@metoffice) September 1, 2022 Met Office Deputy Chief Meteorologist Jason Kelly said: “Rain is on the way for much of the UK through the weekend with the arrival of low pressure

Tropical cyclone forecast error charts - southern hemisphere

Tropical cyclone forecast error charts - Australian region

Tropical cyclone forecast error charts - northern hemisphere