England must score in the second half of their World Cup qualifier against Montenegro to keep on track for a guaranteed place in Rio next summer after a goalless first half at Wembley.
Ukraine's 1-0 win over Poland has seen them jump above Roy Hodgson's team in Group H and in pole position to qualify, with only San Marino left to play.
A draw against Montenegro will leave England likely chasing a route through the playoffs, while a defeat tonight would all but end their hopes of involvement in Brazil in 2014.
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The popular game relies on Google Maps, a problem in South Korea as those functions are limited by the government.
A Met Office warning covering much of England and south-east Wales is expected to remain in place until 11am.
A band of cloud and patchy rain is expected across Scotland and Northern Ireland, moving southeast as the day progresses.