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. Lidar imagery of the team working at Cardington. Ongoing research  The Met Office and NPL’s Sensor Assurance Framework research at Cardington has been undertaken for around two years, with the aim to test sensor performance against as many different weather types as possible, including rain, hail

rises and cools in the atmosphere, it condenses into liquid droplets, forming clouds. Ice crystals may also form at higher altitudes. Precipitation: Within clouds, droplets merge and grow larger. When they become heavy enough, they fall to the ground as rain, sleet, hail or snow. Once

, and sometimes hail, the hallmarks of a thunderstorm. Convection and Ocean Currents Convection also plays a crucial role in the oceans. Warm water near the equator is pushed toward the poles by prevailing winds. As this water moves into cooler regions, it loses heat and becomes denser. Increased salinity

include drizzle, rain, sleet, snow and hail. Multiple tile map layer images are provided three hourly from T+0 to T+36. The map layer is provided without a map, the boundary box for this image is 48° to 61° north and 12° west to 5° east. The image layers are currently made available

low cloud and coastal mist will affect much of eastern Britain, gradually retreating to coastal areas through the day. Scotland and Northern Ireland will start the day fine, but showers will develop, some of which may be heavy with a risk of thunder and hail, particularly in southeastern Scotland

to services between Glasgow Central and Ardrossan Harbour. Much of the month was then free of significant impacts until the weather turned more unsettled in the last week. On the 24th heavy hail showers left up to an inch of hail on the ground in West and North Yorkshire, with flash flooding

flooding, and the A83 at Rest and Be Thankful was closed for a number of days after a landslip. Snow and hail in Wales on 28th may have contributed to some road collisions. On the evening of the 30th in Whickham near Newcastle a couple of large trees were brought down in strong winds. England diary

- a long cloud of smoke, ash or vapour sometimes resembling a feather as it spreads from the source of the cloud. Precipitation – Water that falls from the clouds as rain, snow, hail, sleet Variable - In computer programming we use variables to store information that might change and can be used later

into one another, they stick together and increase in size. They continue to grow until they’re too heavy and begin to fall as rain, snow, sleet or hail. The water droplets even continue to grow as they bump into one another on their journey from the cloud to the ground. Every single raindrop

, likely developing late Friday over northern France and moving into the UK overnight. The southeast, including East Anglia and the southeast of England, is most at risk. These storms could bring torrential rainfall (over 50mm in a few hours), hail, gusty winds, and frequent lightning. A yellow