What is the mass value of the stone

approximately 6.35 kg

The stone or stone weight (abbreviation: st.) is an English and imperial unit of mass now equal to 14 pounds (approximately 6.35 kg).

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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