September 11, 1927 Tsunami: Crimea, Black Sea, Ukraine

1927, Sept 11, 22:15:48 UTC. 44.3 N, 34.3 E, 17 km, 6.8 MS, intensity IX. Following from ref #9934: A strong earthquake was felt over all the Crimea.... Balaklava... Strong shocks. Damage in the city was insignificant, although cracks formed in the walls of the second floor and in the crosspieces. There was a roar from the sea with an ebb and flow of 1 m. (reference #223)

1927, Sept 11, 22:15:49 UTC, 44o,24'N, 34o30'E, magnitude 6.8 MS, intensity VIII. The earthquake generated a tsunami. Description by Nikonov (ref #9935): at Balaklava sea fell in the bay by 0.6-1.0 m and then flooded the shore rising by 0.5 m and destroying two houses; at Sevastopol, sea ebb by 0.5 m; at Yalta sea rapid fall. Waves observed also at Mariupol, Kerch, Novorossiisk and Tuapse. Recorded in tide-gauge stations in the northern Black Sea, with a peak-peak amplitude not exceeding 20 cm. Copies of four records from Kerch, Zhdanov, Novorosiisk and Tuapse reproduced in Ranguelov (ref #9156). Runup 0.5 m. (reference #4139)

1927, Sept 11. After the event of 26 June 1927, an even larger and destructive earthquake of magnitude 6.5 occurred in the Crimean region. The epicenter co-ordinates were situated on the slope of the Black Sea trough, 20 km south-east of Yalta. In the open sea, near the seismic source, fishermen observed sea surface variations and roughness (Dotsenko, 1995; Pelinovsky, 1999). From several Russian sources reviewed by Nikonov (1997a) it results that in Balaklava, to the south of Sevastopol, the sea receded in the bay by 0.6– 1.0 m, then rushed onto the shore and overwhelmed a vast expanse (15 m) rising by 0.5 m; two houses were destroyed. In Sevastopol, ebb up to 0.5m was observed, while in Yalta first a rapid fall and then oscillation at 0.37m were reported. Sea level rise was also reported in other localities. (reference #9391)