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saw the start of a slow thaw. Burst water pipes then became a problem with Northern Ireland worst affected - a week of sub-zero temperatures and the subsequent thaw resulted in some 40,000 homes and businesses being without mains water. Weather Data Snow 25 November to 8 December 2010 From Thursday

and the Isle of Wight. Storm Ciarán exacerbated existing flooding problems with many rivers bursting their banks. At West Bay in Dorset, a section of cliff collapsed into the sea. In Surrey, storm Ciarán caused a power outage at three water treatment plants leaving thousands without a water supply

structures and solar activity Magnetograph EUV Imager Solar wind plasma measurement Plasma analyser M IMF vector measurements Magnetometer M X-ray flux measurement X-ray flux meter M Radio burst detection Radio receivers S(econdary) Energetic particles Proton and electron detector • WMO / Met Office

on observation of the clouds and stars and the behaviour of wild birds to alert them to weather-related hazards and to judge the quality of fishing conditions. They also monitor surface currents in the lake, measuring them with floaters, to determine where fishing conditions are likely to be best. Commonly

frequencies, which pass through the ionosphere. During solar flares the intense burst of radiation interferes with the ionosphere, absorbing HF communications signals and causing radio blackouts on the sun-lit side of the Earth. During geomagnetic and solar radiation storms the ionosphere is modified

June, largely focussed in the Laptev, and later the East Siberian, Sea. This was likely caused by prolonged warm southerly winds from Siberia associated with the notable Siberian heatwave (see also July briefing). In the first three weeks of July two more notable bursts of warm advection from Siberia

as an invasive species which produces pollen after pollen burst. Can we link pollen bursts to people visiting GP surgeries? We should do more on phenology modelling to improve links to health warnings What sort of public health interventions can be done for pollen? People need to know what pollen

forecasting: monitoring CME may not yet be visible in coronagraph so forecaster monitors early warning signs: • Monitor ARs for flares as can be associated with CMEs • Any filaments disappeared? – often associated with CMEs • Type II radio burst? – radio emission at CME shock front • Any coronal

that they are going to be reaching out and actually touching the objects that are so formative in shaping our futures as well as our history. I had cause to reflect on that recently as I travelled through the South Kensington subway bursting at the seams with children enjoying their half term outings. I was on my

when temperatures are high and humidity is low and there is a wind. Flood Plain Flat land by a river that frequently may become covered by water when the 36 Fog Humidity La Niña Normal rainfall Onset Probability Rain Gauge Thermometer Warning river rises and bursts its banks. Ground level cloud