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and increasingly warm weather to southern counties following foggy starts in places, but it was cloudier in the north and especially north-west, with some showery rain for the north-west on the 3rd and 4th, and more widespread cloud and light rain across the north on the 5th. The rain became heavier

was a quieter day with sunshine, starting frosty in the north with -3.5 °C recorded at Spadeadam and Bewcastle (both Cumbria), but the south-east was cloudy at first and cloud increased from the south-west during the day. 6th to 10th The 6th was dry and warm with some sunny intervals for most

and thunderstorms over the south-west spread north and east. The night of the 7th/8th was unusually warm with Langdon Bay (Kent) not falling below 22.3 °C. Between the 8th and 11th, it was widely hot and sunny but low cloud proved slow to clear at times in Midland and northern counties, especially

Areas of expertise Instruments for measuring, wind, temperature, humidity, pressure, visibility, present weather, cloud base, snow depth and rain Methods of Observation and Instrument Exposure Automatic Weather Stations Current activities Mike has directed the project to test and document the key

. The weather variables in a microclimate, such as temperature, rainfall, wind or humidity, may be subtly different to the conditions prevailing over the area as a whole and from those that might be reasonably expected under certain types of pressure or cloud cover. Indeed, it is the mixture of many

began frosty on the 17th, with fog in places, and some sunshine followed for all but the north-west. The 18th was broadly frosty to begin, with mist and fog covering the bulk of the country, clearing only slowly if at all in some spots; otherwise cloud amounts were variable with long sunny periods

pressure, or depression, at the surface. There are various trigger mechanisms required to transform these cloud clusters into a tropical cyclone. These trigger mechanisms depend on several conditions being 'right' at the same time. The most influential factors are: a source of warm, moist air derived

Thursday will begin with a few fog patches in the west and southwest, which are expected to clear quickly, giving way to sunny spells. However, a band of thicker cloud and some rain will move southward across northern and eastern England. This may lead to a few showers redeveloping in the far south

. Temperatures will rise, making it feel warmer than recent days, welcome news for those heading outdoors. However, the northwest will see a shift in conditions later in the day. Cloud will thicken over Northern Ireland and western Scotland, with rain arriving by the afternoon and continuing

and delivering the operational air quality forecast. Charlie Bates Charlie specializes in modelling the dispersion of volcanic eruption clouds using the Met Office's Numerical Atmospheric-dispersion Modelling Environment (NAME). Dr Frances Beckett Frances models the transport of volcanic ash using the Met