UAS Operating Limitations
The FAA says:
§ 107.51 Operating limitations for small unmanned aircraft.
An operator must comply with all of the following operating limitations when operating a small unmanned aircraft system:
(a) The airspeed of the small unmanned aircraft may not exceed 87 knots (100 miles per hour) calibrated airspeed at full power in level flight;
(b) The altitude of the small unmanned aircraft cannot be higher than 500 feet (150 meters) above ground level;
(c) The minimum flight visibility, as observed from the location of the ground control station must be no less than 3 statute miles (5 kilometers); and
(d) The minimum distance of the small unmanned aircraft from clouds must be no less than:
(1) 500 feet (150 meters) below the cloud; and
(2) 2,000 feet (600 meters) horizontally away from the cloud.
If the cloud bases are at 800' above ground level (AGL) then the UAS can not be flown higher than 300' AGL (800-500=300). The way the rule reads you also have to be 2,000 feet away from the cloud. I don't believe that is the intent. I thikn I'll challenge that.