(Fargo, ND) -- The chance of major Red River flooding at Fargo jumped from six percent last month to 79 percent in the latest National Weather Service forecast. Recent heavy snowfall in the southern Red River Valley is a major factor for the change. City administrator Pat Zavoral says they didn't spend 100-million dollars to build up protection levels to panic at 30 feet or even 36 feet. He says when it gets up past 38 or 39 feet they are going to have to do some things until the entire diversion in-town levy is constructed. Temporary levees will go up to protect downtown Fargo and several other locations. The city still has 750-thousand sandbags in storage that weren't used in the 2011 flood.