Atypical monsoonal trough positioning in the Western North Pacific during this season may also have had an indirect effect on the Central North Pacific activity as well as inhibiting that of the Western North Pacific. Throughout September the trough was again south of the expected long term mean position. Early October saw the return of the trough to its normal latitude, but in mid month it migrated south again, where it remained throughout November. Donald R. Cochran, a meteorologist assigned to the Satellite Field Services Station, NESS, NOAA, Honolulu International Airport, observed and documented the case history of the unique cyclonic activity which occurred in the Central North Pacific during this year. A near total excerpt of his excellent report which appeared in the June 1976 issue of Monthly Weather Review is included forthwith.
Nontropical vortices deserving of gale warnings are more frequent.
The present case provides an initial opportunity to verify the compatibility of the two techniques in the Eastern Pacific. Hereafter, HP's terminology will be used. If the cyclone never achieves tropical nature it is called subtropical. Subtropical storms after evolving into tropical storms are said to become extratropical as they degenerate or are absorbed into baroclinic systems. In the SMS-2 picture taken at 0048 GMT 31 August the parent cold low was seen some 1500 km northeast of Honolulu.