This. The site should clearly state whether they're showing 1000ft prevailing winds, jetstream-level currents (around 30,000 feet) or more surface-level effects

This. The site should clearly state whether they're showing 1000ft prevailing winds, jetstream-level currents (around 30,000 feet) or more surface-level effects. All the people talking about power generation from this data should be aware that the only wind that matters there is below 1,000 ft (in many cases, far below 1,000 ft.)