On 5 July 2024, influenced by an extratropical cyclone, Shandong experienced at least 9 tornadoes according to initial investigation, among which No.1-4 tornadoes were generated by the same supercell. This paper analyzes the small- and meso-scale characteristics of the “24·7” clustered tornado process in Shandong using multi-source data such as upper-air and surface observations, data of wind profiler radar and Doppler weather radar, along with ERA5 reanalysis data. The results are as follows. (1) The strong low-level jet (LLJ) provides abundant moisture, and the unstable atmospheric stratification, moderate vertical wind shear and low lifting condensation level create favorable environmental conditions for the tornadic parent storm. The LLJ bottom height drops, the wind speed below 1 000 m reaches 10-12 m·s^-1, and the first tornado appears in Dongming, Heze 37 min later. (2) The extratropical cyclone rapidly intensifies in the central Henan Province, and three types of airflow converges in the northeastern quadrant of the cyclone, resulting in the strengthening of the vortex and the reduction of air pressure at the convergence point. Tornadoes primarily occur near the convergence line on the northeast side of the cyclone or within the northeast airflow behind the convergence line, 62 km away from the cyclone center. (3) During the period of No.1-4 tornadoes, the base heights of the mesocyclone and tornadic vortex signature (TVS) are at the minimum height detectable by the radar. For the mesocyclone, at least one volume scan shows that the maximum shear exceeds 41×10-3 s-1 and the height of the maximum shear is below 2.5 km; for the TVS, at least one volume scan shows that the wind speed difference in the lowest level reaches 37 m·s^-1, the maximum shear reaches 82×10^-3 s^-1, and meanwhile, the height of the maximum shear is below 2.5 km. (4) When the maximum shear of the TVS jumps above 100×10^-3 s^-1 with its height drops below 2.5 km, it indicates an imminent tornado occurrence. (5) When multiple mesocyclones and TVS are detected by the radar, tornadoes tend to occur at the front edge of the echo band. If the intensities of the mesocyclone and TVS do not weaken significantly after a tornado ends, and when the maximum shears of the two increase respectively to above 20×10^-3s^-1 and 70×10^-3s^-1, or when the wind speed difference at the lowest level of the TVS exceeds 35 m·s-1, it indicates that another tornado is about to occur.