Sirens were activated in more than 182 cities and towns across central and northern Israel, including Margaliot, Misgav, Akka, Haifa, and Shatula, Israeli media reported.
Hezbollah had announced a series of rocket attacks targeting Israeli army positions, including a gathering of forces at the Roisat Al-Alam site in the occupied Kfar Shouba Hills and in the Israel-occupied Shebaa Farms.
The Lebanese resistance group said it had also hit three Merkava tanks advancing towards Aita al-Shaab, resulting in casualties among the Israeli forces.
Hezbollah said it also launched a barrage of rockets at the north Israeli town of Safed.
Hezbollah fighters fired a "big rocket salvo" at Safed, the group said in a statement, adding it was "in defence of Lebanon" and in response to Israeli attacks on Lebanese "cities, villages, and civilians."