Mesocyclone Passes over NSSL Surface Station
An apparent mesocyclone passed directly over a surface station that was equipped with both digital and strip chart recorders near Criner, Okla. Peak gusts were 18 m s−1 (35 kt); within 3 min the surface wind changed from strong southeasterly to strong westerly. The pressure dropped 5 mb in 52 min and recovered 4 mb in 6 min. There was only a trace of precipitation. The wind system was probably an inertial remnant of circulation formed with a thunderstorm whose peak intensity occurred about three hours before the cyclone was observed.