Peak Wind Speed

Peak Wind Speed The maximum instantaneous wind speed since the last observation that exceeded 25 knots.
Pendant Echo Radar signature generally similar to a hook echo, except that the "hook" shape is not as well defined.

Peak Gust Recorder: A weather instrument which measures and records the peak wind speed.
Peak Wind Speed: The highest wind speed observed.
Penumbra: Lighter protion of "Sunspots" with temperatures about 5,400 degs. Kelvin.

weather observing practice, gusts are reported when the peak wind speed reaches at least 16 knots and the variation in wind speed between the peaks and lulls is at least 9 knots. The duration of a gust is usually less than 20 s. 2.

Wind Speed: The rate at which air is moving horizontally past a given point. It may be a 2-minute average speed (reported as wind speed) or an instantaneous speed (reported as a peak wind speed, wind gust, or squall).

It may be a 2-minute average speed (reported as wind speed) or an instantaneous speed (reported as a peak wind speed, wind gust, or squall).

See also: Gradient, Earth, Report, Atmosphere, Normal