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VFR / VMC visibility requirements in the US. In aviation, visual meteorological conditions (VMC) is an aviation flight category in which visual flight rules (VFR) flight is permitted—that is, conditions in which pilots have sufficient visibility to fly the aircraft maintaining visual separation from terrain and other aircraft.
The Canadian rules specify that an aircraft may be operated in VFR OTT flight during the cruise portion of the flight during the day, at a vertical distance from clouds of at least 1000 feet. When the aircraft is operated between two cloud layers, the vertical distance between the layers must be at least 5000 feet.
d. A VFR CLOUDS/WX section i. Contains a 12-hour specific forecast, followed by a 6-hour categorical outlook; ii. Broken down into geographical areas, and/or states; iii. Describes cloud and weather affecting VFR flight operations, including precipitation, thunderstorms, and sustained surface winds 20 Kts or greater. Also includes visibility ...
Under visual meteorological conditions, the minimum visual range, distance from clouds, or cloud clearance requirements to be maintained above ground vary by jurisdiction, and may also vary according to the airspace in which the aircraft is operating. [4] In some countries, VFR flight is permitted at night, and is known as night VFR.
"Few" = 1–2 oktas SCT "Scattered" = 3–4 oktas BKN "Broken" = 5–7 oktas OVC "Overcast" = 8 oktas, i.e., full cloud coverage TCU: Towering cumulus cloud, e.g., SCT016TCU CB: Cumulonimbus cloud, e.g., FEW015CB VV "Vertical Visibility" = Clouds cannot be seen because of fog or heavy precipitation, so vertical visibility is given instead.
Cleveland, Ohio, and Erie, Pennsylvania, have a chance of rain mainly in the morning, but scattered cloud cover may be slow to exit the area even after the rain ends. The extent of the cloud cover ...
Cloud-cover symbols used on weather teleprinters and aviation reports in the US [6] In the early 20th century, it was common for weather maps to be hand drawn. The symbols for cloud cover on these maps, like the modern symbols, were drawn inside the circle marking the position of the weather station making the measurements.
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