BAYSARIEH, Lebanon — Israeli warplanes struck targets across southern Lebanon on Wednesday, rattling residents in towns like Baysarieh, located roughly 12 miles south of Nabatieh, one of the region’s largest urban centers. The sound of explosions echoed throughout the night and into the morning, with warplanes frequently circling overhead following intense overnight bombardments.

Locals described a constant low rumble interrupted by sharp blasts from nearby towns, with many unable to sleep due to the repeated strikes. “They are getting closer and closer every day,” said Hanan Khalil, a Baysarieh resident. The atmosphere was tense as the sounds of artillery shells and drone activity contributed to the uneasy silence in the streets.

The Israeli military has escalated its campaign against Hezbollah, the militant group backed by Iran, targeting locations deeper inside Lebanese territory in recent days. On Tuesday alone, the Lebanese health ministry reported at least 31 fatalities resulting from Israeli strikes. Israel’s Prime Minister Benjamin Netanyahu announced a directive to “increase the blows” against Hezbollah.

According to Israeli military officials, over 150 Hezbollah sites in southern and eastern Lebanon were hit overnight, including weapons depots and command centers. Additionally, the military issued an evacuation advisory on Wednesday for Nabatieh, urging residents to move north of the Zahrani River for safety.

The conflict stems from an outbreak of hostilities in March, shortly after a joint U.S.-Israeli offensive began against Iran. The campaign intensified when Hezbollah began firing across the Lebanese-Israeli border in support of Tehran. A cease-fire brokered by the United States took effect in April but has been repeatedly breached by both sides. The Lebanese health ministry reports that more than 3,200 people have died since the violence commenced.

The recent uptick in hostilities coincides with signs of diplomatic progress between the United States and Iran, raising concerns about the potential for further escalation as political negotiations advance.

Residents of Baysarieh observed evacuation warnings broadcast on local television while climbing onto their rooftops to monitor the locations of Israeli strikes. Despite the significance of Eid al-Adha, a major Muslim holiday traditionally marked by celebrations and gatherings, the atmosphere was subdued. Streets remained mostly empty, with businesses shuttered and few children playing quietly under the watchful eyes of their families.

Many residents had fled following previous evacuation notices issued more than a week ago, though some have since returned. Those remaining largely stayed indoors, foregoing customary visits with relatives and neighbors during the holiday. “It’s a difficult Eid,” Ms. Khalil remarked, reflecting the somber mood that pervaded the town as the conflict shows little sign of abating.