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natural variability and climate change. It has already been demonstrated that skillful multi-year predictions of Atlantic hurricane frequency can be produced (Smith et al. 2010). Much more remains to be done to exploit the regional information in decadal forecasts and indeed in climate predictions

for most, with only scattered showers and mist. August ended with unsettled weather as low pressure brought outbreaks of rain, some heavy, to much of the country. The 25th and 26th saw increased rainfall along the west coast of the UK as the remnants of Hurricane Erin arrived. Temperatures returned

, occasionally hurricane force 12 in Rockall, Hebrides and South Bailey, decreasing 5 to 7 for a time later. High or very high, Rain or squally showers. Moderate or good, occasionally poor. Fair Isle, Faeroes West 7 to severe gale 9, backing south or southeast then becoming cyclonic or west later

system (known as GloSea) is used to forecast the number of tropical storms (including hurricanes) and Accumulated Cyclone Energy (ACE) index for the Atlantic sector in the period July to November 2009. Recent research has shown that the skill of dynamical systems such as GloSea is challenging or even

of sea ice. The current levels of sea ice at both poles are well below average and are a continued cause of concern.” You can read more about the state of Arctic and Antarctic sea ice in our latest report. More by Press Office Hurricanes, typhoons and tornadoes: What’s the difference? Why do we have

). A tropical storm is a tropical cyclone with mean wind speeds of at least 39 m.p.h. The terms hurricane and typhoon are region-specific names for strong tropical cyclones with wind speeds of more than 73 m.p.h. The North Atlantic tropical storm season usually runs from June to November. The degree

and common understanding. Everyone knows what you mean by Hurricane Katrina for example, you know the magnitude and impacts that had on America. But if you said ‘the low pressured cyclone’ it would not resonate as much. By naming storms, this will help everyone be better prepared

tir a gallant achosi difrod sylweddol i eiddo a marwolaethau. Cânt hefyd eu galw'n deiffwnau neu gylchoedd gwynt trofannol. Dysgwch ragor yma: www.metoffice.gov.uk/research/ weather/tropical-cyclones/ hurricane www.oceanservice.noaa.gov/ facts/hurricane.html https://www.cdc.gov/nceh/ features

in recent decades. (However, other storms, while less extensive, may have been much more severe - such as 16 October 1987). One of the most notable autumn storms of recent decades was 27 October 2002, while ex-hurricane Ophelia on 16 October 2017 also brought some very strong winds to western parts of the UK and Ireland. Last updated: 25 September 2018 © Crown Copyright

since the Boxing Day storm of 1988. Like Ashley, Eowyn underwent explosive deepening as it approached the UK, driven by the dynamics of the jet stream. The storm brought hurricane-force winds, red warnings, and phenomenal sea states, particularly around the Irish Sea. Large waves and beach material