Israeli air strikes on a military site in Syria overnight were as powerful as a 3.1 magnitude earthquake.

The bombings, which targeted military sites in Syria’s coastal Tartus region, were described as “the heaviest strikes” in the area in more than a decade.

The Syrian Observatory for Human Rights said Israeli warplanes hit air defence units and “surface-to-surface missile depots”, part of a campaign to destroy regime weapons stockpiles that could fall into the hands of Islamist rebels.

No casualties were reported.

Israel is also reported to have targeted missile launchers in the Hama area and radars in Deir ez-Zor military airport.

Videos shared on social media showed a bright orange flash followed by explosions, which sent a mushroom cloud into the night sky.

A 3.1 magnitude tremor was reported by the Geographic Survey of Israel’s seismology department at 11.49pm on Sunday night in the region of the bombings.

Tartus is home to Russia’s naval base, which was temporarily abandoned last week, according to satellite images released by Maxar Technologies.