The IDF posted some raw footage of the rocket attacks, from which at least 17 people were treated for bodily and shock injuries, Jerusalem Post reports. A volley launched against the city of Sderot caused injuries to three Israelis.
US Envoy Jason Greenblatt who has been involved in peace negotiations between Israel and Palestine, pointed a finger squarely at Hamas for the escalation of violence.
The military said it intercepted some 25 rockets, while most of the others landed in open areas.
Sirens sounded in Israeli areas near Gaza, warning residents to seek immediate shelter, the Israeli army said.
Incoming rocket sirens continued to wail throughout southern Israel, including the city of Ashkelon, as projectiles continued to be launched from the Gaza Strip on Thursday as Israeli jets and tanks continued to pound the coastal enclave.
Streaks of light are pictured as rockets are launched from the northern Gaza Strip toward Israel, as seen from Sderot, Aug. 8, 2018.
Only in the early afternoon did the first signs of calm appear, with Hamas saying it will halt rocket fire.
The violence came after two fighters from the military wing of Hamas, which governs Gaza, were killed by Israeli fire on Tuesday.
Israel has not commented on the reported casualties in Gaza yet.More news: Conor McGregor to return against Khabib Nurmagomedov at UFC 229
At least three Palestinians, including a pregnant woman and her 18-month-old child, were killed by Israeli air attacks and artillery shelling on the besieged Gaza Strip, according to the Palestinian health ministry.
Gaza has been controlled by Hamas for more than a decade, during which time it has fought three wars against Israel, most recently in 2014.
On Wednesday, Israeli Prime Minister Benjamin Netanyahu convened an emergency meeting of his security Cabinet - which includes Defense Minister Avigdor Liberman and senior army commanders - to discuss mounting tensions along the Gaza-Israel buffer zone. "We are reinforcing the southern command and Gaza division".
The attacks came after around 150 rockets were fired from Gaza into the occupied territories from late Wednesday into Thursday, the Israeli military added.
The UN, he said, has engaged with Egypt in an "unprecedented effort" to avoid serious conflict, but warned that "the situation can rapidly deteriorate with devastating consequences for all people".
The video was also shared by at least one account in Gaza as proof that Hamas should not be messed with and will hit back if attacked.
"We have had another night of escalation and we are not seeing the end", he said.
Gazans have held weekly protests against Israel at camps on the border since March 30, some of which have become violent.
"We can say that actions led by the United Nations and Egypt are in advanced stages and we hope it could yield some good from them", he said.