A catalog of Fifth Seasons that have been recorded prior to and since the founding of the Sanzed Equatorial Affiliation, from most recent to oldest
Choking Season: 2714–2719 Imperial. Proximate cause: volcanic eruption. Location: the Antarctics near Deveteris. The eruption of Mount Akok blanketed a five-hundred-mile radius with fine ash clouds that solidified in lungs and mucous membranes. Five years without sunlight, although the northern hemisphere was not affected as much (only two years).
Acid Season: 2322–2329 Imperial. Proximate cause: plus-ten-level shake. Location: unknown; far ocean. A sudden plate shift birthed a chain of volcanoes in the path of a major jet stream. This jet stream became acidified, flowing toward the western coast and eventually around most of the Stillness. Most coastal comms perished in the initial tsunami; the rest failed or were forced to relocate when their fleets and port facilities corroded and the fishing dried up. Atmospheric occlusion by clouds lasted seven years; coastal pH levels remained untenable for many years more.
Boiling Season: 1842–1845 Imperial. Proximate cause: hot spot eruption beneath a great lake. Location: Somidlats, Lake Tekkaris quartent. The eruption launched millions of gallons of steam and particulates into the air, which triggered acidic rain and atmospheric occlusion over the southern half of the continent for three years. The northern half suffered no negative impacts, however, so archeomests dispute whether this qualifies as a “true” Season.
Breathless Season: 1689–1798 Imperial. Proximate cause: mining accident. Location: Nomidlats, Sathd quartent. An entirely human-caused Season triggered when miners at the edge of the northeastern Nomidlats coalfields set off underground fires. A relatively mild Season featuring occasional sunlight and no ashfall or acidification except in the region; few comms declared Seasonal Law. Approximately fourteen million people in the city of Heldine died in the initial natural-gas eruption and rapidly spreading fire sinkhole before Imperial Orogenes successfully quelled and sealed the edges of the fires to prevent further spread. The remaining mass could only be isolated, where it continued to burn for one hundred and nine years. The smoke of this, spread via prevailing winds, caused respiratory problems and occasional mass suffocations in the region for several decades. A secondary effect of the loss of the Nomidlats coalfields was a catastrophic rise in heating fuel costs and the wider adaption of geothermal and hydroelectric heating, leading to the establishment of the Geneer Licensure.
The Season of Teeth: 1553–1566 Imperial. Proximate cause: oceanic shake triggering a supervolcanic explosion. Location: Arctic Cracks. An aftershock of the oceanic shake breached a previously unknown hot spot near the north pole. This triggered a supervolcanic explosion; witnesses report hearing the sound of the explosion as far as the Antarctics. Ash went upper-atmospheric and spread around the globe rapidly, although the Arctics were most heavily affected. The harm of this Season was exacerbated by poor preparation on the part of many comms, because some nine hundred years had passed since the last Season; popular belief at the time was that the Seasons were merely legend. Reports of cannibalism spread from the north all the way to the Equatorials. At the end of this Season, the Fulcrum was founded in Yumenes, with satellite facilities in the Arctics and Antarctics.
Fungus Season: 602 Imperial. Proximate cause: volcanic eruption. Location: western Equatorials. A series of eruptions during monsoon season increased humidity and obscured sunlight over approximately 20 percent of the continent for six months. While this was a mild Season as such things go, its timing created perfect conditions for a fungal bloom that spread across the Equatorials into the northern and southern Midlats, wiping out then-staple-crop miroq (now extinct). The resulting famine lasted four years (two for the fungus blight to run its course, two more for agriculture and food distribution systems to recover). Nearly all affected comms were able to subsist on their own stores, thus proving the efficacy of Imperial reforms and Season planning, and the Empire was generous in sharing stored seed with those regions that had been miroq-dependent. In its aftermath, many comms of the middle latitudes and coastal regions voluntarily joined the Empire, doubling its range and beginning its Golden Age.
Madness Season: 3 Before Imperial–7 Imperial. Proximate cause: volcanic eruption. Location: Kiash Traps. The eruption of multiple vents of an ancient supervolcano (the same one responsible for the Twin Season of approximately 10,000 years previous) launched large deposits of the dark-colored mineral augite into the air. The resulting ten years of darkness was not only devastating in the usual Seasonal way, but resulted in a higher than usual incidence of mental illness. The Sanzed Equatorial Affiliation (commonly called the Sanze Empire) was born in this Season as Warlord Verishe of Yumenes conquered multiple ailing comms using psychological warfare techniques. (See The Art of Madness, various authors, Sixth University Press.) Verishe named herself Emperor on the day the first sunlight returned.
[Editor’s note: Much of the information about Seasons prior to the founding of Sanze is contradictory or unconfirmed. The following are Seasons agreed upon by the Seventh University Archaeomestric Conference of 2532.]
Wandering Season: Approximately 800 Before Imperial. Proximate cause: magnetic pole shift. Location: unverifiable. This Season resulted in the extinction of several important trade crops of the time, and twenty years of famine resulting from pollinators confused by the movement of true north.
Season of Changed Wind: Approximately 1900 Before Imperial. Proximate cause: unknown. Location: unverifiable. For reasons unknown, the direction of the prevailing winds shifted for many years before returning to normal. Consensus agrees that this was a Season, despite the lack of atmospheric occlusion, because only a substantial (and likely far-oceanic) seismic event could have triggered it.
Heavy Metal Season: Approximately 4200 Before Imperial. Proximate cause: volcanic eruption. Location: Somidlats near Eastern Coastals. A volcanic eruption (believed to be Mount Yrga) caused atmospheric occlusion for ten years, exacerbated by widespread mercury contamination throughout the eastern half of the Stillness.