A spell of very strong westerly winds is likely during monday (11/09/17) morning. Delay to travel is likely. Some short term loss of power is also possible. The worst of the winds should gradually ease later in the morning, although some strong gusts may persist into the afternoon.
Strong westerly winds will give gusts of 45-50 mph quite widely inland. Gusts of 60 mph are expected along coasts exposed to the west, in particular coasts bordering the Bristol Channel. Normally winds of this strength would cause very few impacts. However, with trees still being in full leaf, they be more susceptible to damage with resulting debris possibly affecting roads and overhead power supply lines.
For more information please see: http://www.metoffice.gov.uk/public/weather/warnings