[3] A shortwave trough near the British Isles started to expand southwards to North Africa on 3 November, which caused Lake Maggiore in Italy to overflow.

[7] When Qendresa's LLCC was moving north-northeastwards and combining with the ULCC early on 7 November, the system occluded quickly and intensified dramatically.

[7][8] Thanks to sea surface temperature over 23 °C (73 °F) and the strong cold air at middle and upper levels, Qendresa formed an eye-like feature surrounded by deep convection near Linosa around noon.

[7] MOLOCH, an Italian model, estimated that the low-level temperature of Qendresa's eye was about 6 °C (11 °F) warmer than the surrounding area with the no longer cold middle and upper levels at that time, suggesting a warm-core system.

It was significantly eroded because of the terrain of Sicily and increasing vertical wind shear, resulting a partially exposed and weakening system later.

[14] Qendresa brought similar damages to the eastern part of Sicily, including eroded coasts, blown off roofs, and overturned boats.