Notability means that it has met some criterion or achieved some statistic, or is part of a top ten for some superlative.
Characteristics include extremes of location, such as the northernmost or most equator-ward formation or position of a tropical cyclone.
Other characteristics include its central pressure, windspeed, category on the Saffir–Simpson scale, cyclogenesis outside of a normal hurricane season's timeframe, or storms that remain unnamed despite forming after tropical cyclone naming began in 1960.
These include the cost of damage, the number of casualties, as well as meteorological statistics such as rainfall point maximum, wind speed, and minimum pressure.
The following names have been retired in the East Pacific (in chronological order): Hazel, Adele, Fico, Knut, Iva, Fefa, Ismael, Pauline, Adolph, Israel, Kenna, Alma, Manuel, Odile, Isis, Patricia,[1] Dora, and Otis.
[2] In addition, the following names have been retired in the Central Pacific (in chronological order): Iwa, Iniki, Paka, and Ioke.
On average, the eastern north Pacific sees about sixteen named storms per year.
†Entered the basin on this date Tropical cyclones have received official names in the Eastern and Central Pacific beginning in 1960.
Hurricanes John and Dora spent some time in the west Pacific before dissipating.
[46] No known tropical cyclone forming in the central north Pacific lasted for longer than 14 days without crossing into another basin.
[46] The tropical cyclone forming in the central Pacific that spent the most time there was Hurricane Ana (2014) at 12.75 days from formation to extratropical transition.
[43] This includes only systems which stayed a tropical cyclone during the passage or that maintained a circulation during the crossover.
[78] This includes only systems which stayed a tropical cyclone during the passage or that maintained a circulation during the crossover.
Of those ten times, six of them were storms which crossed the dateline twice; from the western to the central pacific and back (or vice versa).
[105] Its track data indicates that it crossed from the central to the east Pacific because it formed at longitude 149°W and dissipated at 135°W.
[107] This cyclone is unofficial because it is not included in the seasonal reports of either Regional Specialized Meteorological Center.
That is, until 1988, Pacific hurricanes generally did not have their central pressures measured or estimated from satellite imagery.