The IDF has dispersed warning leaflets above several locations in the Gaza Strip. This video is from Nov. 15, over Khan Yunis.
The Arabic leaflet reads: "Important announcement for the residents of the Gaza Strip: For your own safety, take responsibility for yourselves and avoid being present in the vicinity of Hamas operatives and facilities and those of other terror organizations that pose a risk to your safety. Hamas is once again dragging the region to violence and bloodshed. The IDF is determined to defend the residents of the State of Israel. This announcement is valid until quiet is restored to the region. Israel Defense Forces Command."
Video courtesy of Israel Defense Forces