has deepened and strengthened quickly and dramatically, something meteorologists call explosive cyclogenesis. now, imagine a column of air from the ground up to the level of the jet stream at around 30,000 feet or so. a disturbance in the powerful jet stream forces the air aloft to accelerate away, removing air from the top of the column. the column weighs less and so the force it is exerting on the ground, the pressure gets lower. hence, low pressure. near the ground, air rushes in to replace what is lost higher up, and the area of low pressure rotates more and more quickly. and as the process continues, the storm is able to deepen explosively. on a weather chart, you will see more and more isobars appearing, like a dartboard, and if the pressure falls by at least 2a millibars in 2a hours, that is explosive cyclogenesis, or a weather bomb. weather bombs like storm eunice are not that unusual. but it is when explosive
this milder and wetter weather tends to come from the atlantic where the storms develop so that does start to suggest that winter stormy periods are becoming more frequent in the future. also, there is research into certain types of storms, and in particular the kind that can give us our very strongest winds of all, and it looks like these as well may become more frequent in the long term. more explosive cyclogenesis now, and this time with a snowstorm that slammed into the north east usa injanuary, giving boston its joint snowiest day on record. parts of northern japan had their snowiest january, the city of sapporo saw more than 60 centimetres in 2a hours, the snowiest day in records going back more than 20 years. not the normal view of a greek island but this is naxos injanuary. even in a warming world, there will be bouts of severe winter weather. europe overall had a warmer than average winter.
watcher pictures, showing northern ireland and scotland s sunniest march in records going back to 1919. the blue sky followed another warmer than average winter. half of the uk s top ten mildest winters have occurred since 2010. still to come on weather world, what makes a flash a mega flash? the changes in technology taking our understanding of lightening to new extremes. of lightning to new extremes. this time on weather world, we are on the isle of wight where, in february, a gust of wind of 122 miles per hour was recorded and that is a new record for england. it happened during storm eunice. an area of low pressure that underwent explosive cyclogenesis. bbc weather s climate check presenter ben rich takes a closer look at the science behind these rapidly strengthening storms. a bomb cyclone is a scary name for what is essentiallyjust an area of low pressure that
are becoming more frequent in the future. also, there is research into certain types of storms, and in particular the kind that can give us our very strongest winds of all, and it looks like these as well may become more frequent in the long term. more explosive cyclogenesis now, and this time with a snowstorm that slammed into the north east usa injanuary, giving boston its joint snowiest day on record. parts of northern japan had their snowiest january, the city of sapporo saw more than 60 centimetres in 2a hours, the snowiest day in records going back more than 20 years. not the normal view of a greek island but this is naxos injanuary. even in a warming world, there will be bouts of severe winter weather. europe overall had a warmer than average winter. the same storm that hit greece swept across the middle east. this is aley on mount lebanon,
call explosive cyclogenesis. now, imagine a column of air from the ground up to the level of the jet stream at around 30,000 feet or so. a disturbance in the powerful jet stream forces the air aloft to accelerate away, removing air from the top of the column. the column weighs less and so the force it is exerting on the ground, the pressure gets lower. hence, low pressure. near the ground, air rushes in to replace what is lost higher up, and the area of low pressure rotates more and more quickly. and as the process continues, the storm is able to deepen explosively. on a weather chart, you will see more and more isobars appearing, like a dartboard, and if the pressure falls by at least 2a millibars in 2a hours, that is explosive cyclogenesis, or a weather bomb. weather bombs like storm eunice are not that unusual. but it is when explosive cyclogenesis happens near land that their impact can be extreme. eunice s winds were so strong