After rain canceled Saturday’s qualifying, more ominous weather in the forecast for Sunday’s race forced NASCAR to move its plans to Monday with the Cup Series race now scheduled to start at 4 p.m. ET.

NASCAR said it decided to postpone the races “due to overnight weather and forecast (and) the Sullivan County flood warnings and safety concerns.”

Rain returned to the track after storms Saturday forced NASCAR to cancel Cup and Truck series qualifying races and postpone the Truck Series main race. The trucks managed a few laps of heat racing before the track turned into a muddy mess.

Below are the moments that led to NASCAR’s decision to cancel the heat races and postpone the Truck and Cup races, and a look at what’s ahead for Monday.

MORE: Lineup for Bristol race without qualifying

NASCAR race weather updates

SUNDAY, MARCH 27: 

Racing conditions are expected to be good enough for NASCAR to finally get the race in on Monday.

The National Weather Service had more bad news for Bristol heading into Sunday:

The green flag for the Cup Series race is scheduled for 4 p.m. ET and the green flag for the rescheduled Truck Series race is set for approximately 9 p.m. ET. The above forecast makes neither start time look realistic. It raises the possibility of a doubleheader Monday, when clear conditions are expected.

SATURDAY, MARCH 26: Severe weather remained in the area after NASCAR called off racing Saturday night.

The radar painted a gloomy picture after the trucks were ordered off the track.

NASCAR canceled the heat races and postponed the truck main at 6 p.m. ET.

There was always a threat Saturday of thunderstorms and hail turning the track into muck.