The weather is seeming overwhelmingly unpredictable for the British Open, with one report saying winds might be as high as 30 mph for Rory McIlroy's tee off.
http://bleacherreport.com/articles/758270-british-open-2011-news-updates-tee-times-at-royal-st-george/entry/106953-rory-mcilroy-will-bad-british-open-weather-conquer-mcilroy-once-again