Hezbollah launched attacks firing rockets to the Haifa Bay area and to the Western, Upper and Lower Galilee early on Tuesday.
The Homefront Command said schools must remain shut in the Carmel Mountain Ridge and the Jezreel Valley extending the range of only distance learning south of the Haifa-Tiberias line.
Overnight some 20 rockets and missiles targeted the Lower Galilee where at least four people were reported to have suffered light injuries. Shrapnel fell in Nazareth and the surrounding areas. At least five people were hurt when they ran to seek shelter.
The IDF said it was responding to the sources of the fire and had attacked the terror squad that targeted Afula in the Jezreel Valley as well as other Hezbollah assets. Lebanese media said at least 10 people were killed when Israel attacked the Bekaa region in eastern Lebanon early on Tuesday.
Israel on Monday announced a nationwide state of emergency in anticipation of the Hezbollah fire spreading further south toward the center of the country after Haifa and its surrounding areas including the Carmel mountain ridge came under attack.
"This is just a small taste of what residents on the Gaza border in the South and the Lebanon border in the north have been suffering for the past 20 years," said Ze'ev Gorodetzki after shrapnel from the intercepts fell near his home. He said windows broke from the blasts and the house shook. "I was not frightened but people around here are. Some homes do not have shelters and the residents spent the night at the local school. I am glad there were no injuries but there was damage," he said.
A million Israelis were forced to seek shelter during the Hezbollah attacks on Monday after the Iran-backed terror group expanded its fire further into Israel.
The military said it struck some 1,600 targets in Southern and Eastern Lebanon during the day and had also attacked the southern quarters of Beirut in an attempt to assassinate a senior Hezbollah commander.