Abstract

Storm <i>Aila</i>: An unusually strong autumn storm in Finland

Highlights

  • Introduction tor and power grid operatorsaccurately predicting the track and intensity of ETCs Extratropical cyclones (ETCs) are responsi- remains a crucial task for weather forecasters. ble for most of the day-to-day variability located at the tail end of the of weather in the mid-latitudes

  • Ophelia was a significant weather event that led to widespread disruption

  • Accurately predicting the track and intensity of ETCs Extratropical cyclones (ETCs) are responsi- remains a crucial task for weather forecasters. ble for most of the day-to-day variability located at the tail end of the of weather in the mid-latitudes

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Summary

Analysis of storm Ophelia

The weather during January 1974 was mild, wet and stormy. There were numerous days when the winds reached storm force but two storms stand out. The storm on the evening of the 11th and morning of the 12th, and the storm on the evening of the 27th, which continued through much of the following day in Ulster Both of these storms were associated with deep occluding depressions as they swept northwards off the west coast of Ireland and five lives were lost as a result of the two storms, along with extensive damage and coastal flooding (Aylott et al, 2019). An intense depression continued to deepen as it moved quickly northeastwards past the northwest coast of Ireland on the evening of 26 December 1998. It was an unusually deep depression with central pressure below 950hPa. Ulster and Connaught bore the brunt of the strong winds. Maximum wind gusts reached 96kn at Malin Head, just short of the record set by ‘Hurricane’ Debbie in 1961

Conclusions and summary
The observed wind speeds during storm
Conclusions

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