UK meteorology

Latest estimates from the US hurricanes people suggest that the hurricane will undergo extratropical conversion tomorrow while it is several hundred miles off the Spanish coast, possibly degrading straight from a hurricane to an extratropical cyclone/European windstorm without spending time as a tropical storm in between. That being said, Ireland and possible western Wales/south-west Scotland are expected to experience hurricane-force winds (defined as frequent gusts or continuous winds of 74 mph or above), so it's going to be disruptive and possibly present a danger to those outside near trees or in exposed areas such as clifftops.
 
More from Netweather my explanatory notes in smaller bold):
All the charts will have to be viewed, there still could be slight changes in the track next 24hours, so areas affected could vary.

As Hurricane #Ophelia undergoes transition from 'proper' hurricane to post-tropical cyclone with hurricane force winds, shown on NHC US National Hurricane Center graphic as black circle H to white circle H (then white circle S, storm): The resulting cyclone/low will bring a stifling warm sector, note 25/26C for SE Britain on Monday. the thickness charts thickness of the atmosphere up to a given pressure - higher thickness values indicating warm air and usually high pressure show a warm pool of air(over 1km up- warm seclusion warm air from the eye of the hurricane and tropical airmass) remnants of the warm core which won't exist at the surface by the time Ophelia reaches Ireland. Surface low forecast for/near SW Ireland. The strongest gusts occur in the SE quadrant of a low (in N.hemisphere). 73mph+ temp gusts, the mean sustained winds look to reach storm force for S.coast of Ireland.

Met Eireann from Sat Wind Warning for Galway, Mayo, Clare, Cork and Kerry

Hurricane Ophelia is expected to transition to a post tropical storm as it approaches our shores on Monday bringing severe winds and stormy conditions . Mean wind speeds in excess of 80 km/h and gusts in excess of 130km/h are expected, potentially causing structural damage and disruption, with dangerous marine conditions due to high seas and potential flooding.
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FYI, here is an image of a wind strength chart - note that Force 12 is 'hurricane force' even though this doesn't mean that a tropical hurricane is present:
Beaufort_large.gif
 
Met Office warning for N. Ireland:

https://www.metoffice.gov.uk/public/weather/warnings#?date=2017-10-16

Met office warning of the potential for danger to life in northern Ireland


Between 15:00 Mon 16th and 22:00 Mon 16th
A spell of very windy weather is expected on Monday in association with ex-Ophelia. Longer journey times and cancellations are likely, as road, rail, air and ferry services may be affected as well as some bridge closures. There is a good chance that power cuts may occur, with the potential to affect other services, such as mobile phone coverage. Flying debris is likely, such as tiles blown from roofs, as well as large waves around coastal districts with beach material being thrown onto coastal roads, sea fronts and properties. This leads to the potential for injuries and danger to life.
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Blademonkey said:
All gone quiet now, could have been moving through but it was proper loud and I guess the Lightning tripped a transformer close by.
Let's be careful out there....
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I have info. from one of Netweather's chief forecasters that it's elevated instability ahead of the storm. There could be more, I suspect. To give you an idea, the Irish Met have put the whole of Ireland on Red Alert.
 
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