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Night of the Big Wind
The Night of the Big Wind ((アイルランド語:Oíche na Gaoithe Móire)) was a powerful European windstorm which swept without warning across Ireland beginning in the afternoon of 6 January 1839, causing severe damage to property and several hundred deaths; 20% to 25% of houses in north Dublin were damaged or destroyed, and 42 ships were wrecked. The storm attained a very low barometric pressure of and tracked eastwards to the north of Ireland, bringing winds gusts of over 100 knots (185 km/h, 115 mph) to the south before moving across the north of England and onto the European continent where it eventually died out. At the time, it was the most damaging Irish storm for 300 years.
==Meteorological situation==
The storm developed after a period of unusual weather. Heavy snow, rare in Ireland, fell across the country on the night of 5 January, which was replaced on the morning of 6 January by an Atlantic warm front, which brought a period of complete calm with dense, motionless, cloud cover. Through the day, temperatures rose well above their seasonal average, resulting in rapid melting of the snow.
Later on 6 January, a deep Atlantic depression began to move towards Ireland, forming a cold front when it collided with the warm air over land, bringing strong winds and heavy rain. First reports of stormy weather came from western County Mayo around noon, and the storm moved very slowly across the island through the day, gathering strength as it moved.
By midnight the winds reached hurricane force. Contemporary accounts of damage indicate that the Night of the Big Wind was the most severe storm to affect Ireland for many centuries. It is estimated that between 250 and 300 people lost their lives in the storm. Severe property damage was caused, particularly in Connacht, but also in Ulster and northern Leinster. Between a fifth and a quarter of all houses in Dublin suffered damage ranging from broken windows to complete destruction.〔 Much of the inland damage was caused by a storm surge that drew large quantities of sea water inland, resulting in widespread flooding.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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