Motorists planning to travel between England and South Wales overnight and early tomorrow morning are being warned that both Severn crossings, the M48 and M4 will be closed in both directions for several hours due to the high winds.
The M48 suspension bridge has been closed to high-sided vehicles and closed to all traffic from 7pm Sunday evening.
The weather forecast is for very high winds peaking at around 4am, so the decision has been taken to also close the second Severn Crossing, the M4, from 3am Monday morning.
Other areas are also being affected by strong winds. The Sheppey Crossing in Kent has been closed earlier today (Sunday) and there have been speed restrictions in place on the QE2 Dartford Bridge.
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Sunday's weather with Philippa
Philippa has the weekend weather update for the east
Philippa has the weekend weather update for the west