Strong winds, accompanied by a band of rain, are expected to sweep across the capital, with gusts potentially reaching 50-60 mph in some areas.
More exposed locations, such as hills and coasts, could see gusts of up to 70 mph.
Commuters are being warned to expect disruption, with bus and train services likely to face delays. High-sided vehicles could encounter challenges, and short-term power outages are also possible due to the severe weather.
While London faces significant gusts, the worst of Storm Éowyn is forecast for Northern Ireland and parts of Scotland, where a top-level red warning for wind has been issued for Friday morning.
The storm is expected to bring dangerously high winds across the island of Ireland from early Friday, with widespread disruption anticipated.
Residents are advised to take precautions and check travel updates throughout the day.
Here is the hour-by-hour forecast for today (Thursday)
12pm – Heavy rain
1pm – Heavy rain
2pm – Light shower
3pm – Sunny intervals
4pm – Clear
5pm – Clear
6pm – Clear
7pm – Clear
8pm – Clear
9pm – Partly cloudy
10pm – Partly cloudy
Here is the hour-by-hour for tomorrow (Friday)
5am – Heavy rain
6am – Heavy rain
7am – Light rain
8am – Light rain
9am – Light rain
10pm – Cloudy
11pm – Cloudy
12pm – Cloudy
1pm – Cloudy
2pm – Cloudy
3pm – Sunny intervals
4pm – Partly cloudy
5pm – Partly cloudy
6pm – Partly cloudy
7pm – Clear
8pm – Partly cloudy
9pm – Partly cloudy
10pm – Clear
Here is the forecast in full
Today: Mainly dry and bright this morning with mist or fog patches gradually clearing. Thicker cloud and rain, heavy at times, spreads east during the day, accompanied by gusty winds. Rain largely easing by late-afternoon with clear spells, isolated showers following. Maximum temperature 8 °C.
Tonight: Showers easing this evening with widespread clear spells and local frost developing. Lighter winds for a time, but becoming wet and windy later in the night as Storm Éowyn arrives. Minimum temperature 2 °C.
Friday: Rain clearing through the morning, leaving a largely dry and bright, but windy day. Winds will be strongest during the morning and early afternoon before easing towards the evening. Maximum temperature 10 °C.
Outlook for Saturday to Monday: Sunny spells, lighter winds Saturday. Chance of rain or showers developing. Sunday, largely fine to start but strong winds, rain arriving. Further wet and windy weather possible on Monday.
