The National Weather Service is warning people in the path of a coming massive storm to get indoors.
"This is a dangerous storm," the weather service said in a severe thunderstorm warning. "If you are in its path, prepare immediately for damaging winds, destructive hail and deadly cloud to ground lightning. People outside should move to a shelter, preferably inside a strong building but away from windows."
The storm is expected to hit east central Utah County and southeastern Wasatch County before 3:15 p.m.
The weather service said a storm near Soldier Summit, 29 miles northwest of Price, could produce hail the size of quarters. That storm is expected to move over Strawberry Reservoir around 3:15 p.m.
Strong thunderstorms stretching from as far south as Milford up into Logan are also expected to bring heavy rain, wind and hail this evening.
The forecast for the Salt Lake area called for showers and thunderstorms mainly before midnight. Winds could reach around 13 mph.
A flash-flood warning also remains in effect until 3:15 p.m. for central Wayne County. Drivers in that area are advised to avoid areas where the water covers the roadway.
"Flooding is occurring or is imminent," the weather service said. "It is important to know where you are relative to streams, rivers or creeks, which can become killers in heavy rains."