In both instances, the Met Office failed to predict the movements of the jet stream - the high-level wind that races round the world 10km above the surface.
Windows 8 and Surface together represent a prodigious bet to round out an eco-branding ploy which hits all major product categories with a consistent look and feel.
The 20-year-old has a poor record on clay, winning only four of his 13 matches on the slower surface and failing to get beyond the first round of the French Open in his only appearance in 2006.
But the eyes of the tennis world were on Nadal as he returned to the more unforgiving hard court surface for the first time in 346 days with a second round match against Ryan Harrison of the United States Saturday.
Two AC-130s have been recently lost - one was shot down by a surface-to-air missile, another crashed in Somalia when, it is thought, a round accidentally exploded.