The Pacific is the largest and the deepest ocean ... That's because many of these planes try to leverage the jet stream flowing from west to east. A jet stream is a narrow stream of fast blowing ...

The North Pacific Jet (NPJ) travels eastward at variable ... in relation to the amount and intensity of moisture the jet stream delivers. This graphic represents a winter-average path of entry ...

The jet stream, one of the most dramatic forces of nature, was discovered during World War II when aviators first tried to cross the Pacific. This strong wind current is often defined as upper ...

The origins of this jet stream and the storm system itself can be traced back to Typhoon Songda, which spun up over the western Pacific on Oct. 8 and intensified into a super typhoon before weakening.

In the map below, that zone of unsettled weather ... that could fly above 20,000 feet were used over the Pacific when the jet stream's existence was verified, the AMS says. Forecasts estimated ...