The thundery start to May is nothing unusual. This late Spring month often has a spell with thunderstorms, and it's now 12 years since the last thunder-free May. In both 2001 and 2002 there were 5 days when thunder occurred. Today, a line of showers continued to feed northeast across London. Similar lines of showers occasionally cause problems during the Wimbledon Tennis Fortnight, and like this afternoon, skies were fairly clear both north and south of the Capital. Although southwest winds blew today, May is frequently a month when northeasterly winds dominate. We await the rest of the month with interest.