During a period of fairly low planetary magnetic index (Kp varied from 1+ to 2) across the study period on JUne 25, 1969, numerous low-amplitude unidirectional wave trains of infrasound were recorded at the Geophysical Institute in College, Alaska. By using a mean horizontal transit speed of auroral infrasonic waves of 243 m.s the origin of these pressure disturbances is shown to be various locations within the auroral electrojet. Because of the intermittent nature of the coherent low-amplutude signal reception and the presence of many nearly coherent pressure oscillations on this occasion it is suggested that upper atmospheric winds could exert the dominant influence to enhance or suppress propagation of auroral infrasonic waves from ionosphere to ground.