Northerly winds are sweeping across the UK, bringing cold air from the Arctic and some of the most widespread low temperatures of the autumn so far.
Thursday afternoon's highs will remain in single digits for most whilst overnight lows will widely fall below freezing, potentially dropping to -7C.
Strong winds will bring a significant wind chill, especially on northern and eastern coasts, so it will feel colder than the reading on the thermometer would suggest.
Yellow cold health alerts from the UK Health Security Agency (UKHSA) have come into force.
Whilst the cold weather will come with sunshine in most areas, showers will also feature in northern parts of the UK, some of which could be wintry over high ground.
The first cold health alerts of the season cover the West Midlands and north-west England, external.
They have been issued by the UKHSA, in association with the Met Office, and are valid from now until 12:00 on Saturday.
The yellow alerts warn of minor impacts on the health and social care sector, with increased use of healthcare services by vulnerable people - who face a greater risk to life.
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