Periodic fluctuations in wind, pressure and temperature at Port Hedland

Unusually regular and persistent fluctuations developed in a fresh NW wind at Por t Hedland, on the northwest coast of Australia, on 9 November 1963. Presumably the fluctuations were associated with the development of gravity waves on a sea breeze front below 1000 feet over Port Hedland. An estimate is made of the speed and direction of motion of the waves. One year‘s records at Port Hedland and Broome, another station on the northwest coast, indicate that there, the occurrence of periodic fluctuations in surface wind- are not unusual following the development or arrival of land or sea breezes or coast! fronts.