balance forecast and low balance warning weirdness

I'm getting a balance forecast and a low balance warning that I don't understand. First, it says my account will go below 0 tomorrow

I don't have anythingscheduled between now and then as seen in my register When I look at thecalendar it also doesn't show the balance dropping below 0 Also at the bottom of theregister it says my balance will be at about -693 sometime over thenext month. I don't see my balance ever dropping below zero over thenext month when looking at the calendar. Can anybody explain this?