The November 1826 storm[2] has been explained as a tropical storm that intensified after an interaction with a mid-latitude trough and moved close to the Canary Islands;[3] atmospheric pressures dropped to 966–947 hPa (28.5–28.0 inHg) at 500 metres (1,600 ft) elevation.
[5] The French naturalist Sabin Berthelot explicitly called this storm a "hurricane".
[6] Trees and plantations were flattened and winds[7] with gusts probably exceeding 120–150 kilometres per hour (75–93 mph)[8] damaged houses (reportedly 603 in Tenerife alone) and ships in ports (of which six were reportedly lost);[7] the death toll in Tenerife reached 298 and sources speak of "floating cadavers" and "infinite number of dead".
[9] Most of the destruction and death toll was caused by the precipitation;[8] with some places seeing over 500 mm (20 in) of rain.
Geomorphological changes also took place in the islands as a consequence of the storm, an alluvial fan on Teide[10] and flood deposits on Lanzarote were most likely formed by it.