The coolant leaks out.
Most radiator hoses burst due to old age or rubbing against an engine part once it bursts you will lose antifreeze rapidly due to the pressure causing your car to over heat.
All the hoses go soft and explode.
2 radiator hoses / the top radiator hose comes from the engine thermostat / and the bottom radiator hose returns to the engine water pump
Lower radiator hoses in water cooled engines are return lines. The upper radiator hoses are feed lines of hot engine water to the radiator. The reason that lower hoses are cooler is that the radiator has allowed much of the water's heat to dissipate into the air. Thus, a lower radiator hose contains cooler water than other radiator and heater hose lines.
Radiator cap
the hoses leading to and from your radiator might be clogged. If you had a rusty radiator, the rust may have clogged the hoses that carry the coolant. you should check all your hoses and even flush them out.
Radiator hoses? Heater hoses? Vacuum hoses? EVAP hoses? Need more info to help you.
Radiator hoses and heater hoses should be inspected yearly and replaced when neccessary.
Waterpump, thermostat, radiator, radiator hoses.
Low on coolant and/or a faulty radiator cap.
How old is the hose? There was probably a weak spot in the hose. It could have been rubbing against a fan belt or a part of the car that just rubbed it till it broke. Your Radiator cap could be faulty therefore the pressure in the radiator becomes so great that something has to give and the hose would be a likely part to burst.
If the hoses are all tight, Then the radiator must be leaking. REPLACE RADIATOR