Earlier, in Haifa, at least 23 people were wounded - two moderately and 11 lightly - when 16 rockets pounded the city. The rest were suffering from shock. Magen David Adom ambulances evacuated the wounded to Haifa's Rambam Hospital.
According to police, what could have been disastrous results of the salvo on Haifa were avoided, due to the fact that most of the rockets missed apartment buildings and impacted in courtyards.
One of the rockets hit a city bus. Puddles of blood were seen on the front steps of the bus leading up to the driver's seat. The windshield was hit by shrapnel.
A house that was hit by yet another rocket sustained heavy damage, but no one was seriously hurt, witnesses said. Two other rockets struck very close to one of the city's hospitals, doctors said.
In an almost simultaneous attack on the Upper Galilee, seven rockets fell in open spaces around Kiryat Shmona, setting fires in the area. No one was wounded.
Earlier on Tuesday, at least five rockets fell in Safed, three in Acre and one in Shfaram. All fell in open spaces and no one was hurt in the attacks.
Also Tuesday morning, warning sirens sounded throughout the North, including in Safed, Haifa, Karmiel and Kiryat Shmona.
In the South, one woman, reportedly a foreign worker, was moderately wounded from shrapnel when a Kassam rocket directly hit her home in the western Negev on Tuesday morning.
The Home Front Command has ordered all residents of northern communities to remain inside their protected rooms or bomb shelters during the day, and particularly when rocket alerts are sounded.