The weather forecast for Sunday’s NASCAR Cup series dirt at Bristol Motor Speedway is not promising. It is possible to wash off the weekend. Rain is expected to return to the track after storms on Saturday forced NASCAR to cancel the Series Cup and Truck Qualifiers and delay the main truck chain race. The trucks manage to do a few turns of heat races before the track turns into a muddy mess. Here are the moments that led to NASCAR’s decision to cancel thermal races and postpone the truck race, and take a look at what lies ahead on Sunday. Bad news for Bristol: Showers and thunderstorms before noon, then possibly showers. Some storms can be severe. Incomplete fog between 10 AM and 11 AM. High near 66. Southwest winds of 10 to 15 mph, with gusts of up to 25 mph. The chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches are possible. Sunday night: 30 percent chance of taking a shower, especially before 7 PM. Partly cloudy, with a low of about 34. Northwest winds of 10 to 15 mph, with gusts of up to 20 mph. The green flag for the Series Cup race is set at 4 PM EST, and the green flag for the rescheduled Truck Chain Race is set at around 9 PM ET. The expectations above do not make the start-up time seem realistic. Raises the possibility of double heads on Monday, when conditions are clear to be expected. Saturday, March 26: Severe weather remains in the area after NASCAR canceled the race on Saturday night. Radar painted a grim picture after the trucks were ordered off the track, NASCAR canceled heat races and the main truck was evacuated at 6 p.m. ET, and there was always the threat of thunderstorms and hail turning the track into mud on Saturday.