The leading edge of an advancing cold air mass that is under running and displacing the warmer air in its path Generally, when a cold front passes the temperature and humidity decrease, the pressure rises, and the wind shifts from southwest to northwest Precipitation is usually along or ahead of the front in the form of thunderstorms
The boundary between a cold air mass that is advancing and a relatively warmer airmass Generally characterized by steady precipitation followed by showery precipitation
The leading edge of an advancing cold air mass that is under running and displacing the warmer air in its path Generally, with the passage of a cold front, the temperature and humidity decrease, the pressure rises, and the wind shifts (usually from the southwest to the northwest in the Northern Hemisphere) Precipitation is generally at and/or behind the front, and with a fast-moving system, a squall line may develop ahead of the front
The leading edge of a relatively cold air mass that displaces warmer air Following a cold front passage, westerly winds of 10 to 20 mph, or more, often continue for 12 to 24 hours
The leading edge of a relatively cold air mass that displaces warmer air The heavier cold air may cause some of the warm air to be lifted If the lifted air contains enough moisture, the result may be cloudiness, precipitation, and thunderstorms If both air masses are dry, no clouds may form Following the passage of a cold front in the Northern Hemisphere, westerly or northwesterly winds of 15 to 30 or more miles per hour often continue for 12 to 24 hours
The leading edge of a relatively cold air mass that displaces warmer air The heavier cold air may cause some of the warm air to be lifted If the lifted air contains enough moisture, the result may be cloudiness, precipitation, and thunderstorms If both air masses are dry, no clouds may form Following the passage of a cold front in the Northern Hemisphere, westerly or northwesterly winds of 15 to 30 mph often continue for 12 to 24 hours
The boundary between a cold air mass that is advancing and a relatively warmer air mass Generally characterized by steady precipitation followed by showery precipitation
The leading edge of a cold air mass Cold frontal passages are usually associated with sharp wind shifts, pressure rises, showery or stormy conditions, and rapid temperature drops
A front can best be described as the border between two different air masses A cold front is the leading edge of cooler or colder air It cuts into the space that is occupied by warmer air and eventually replaces it with a cooler/colder Air Mass This happens as the cold air causes the warm air to rise up and over it As the warm air travels upwards, it begins to mix with the cold air aloft and condenses to form clouds You can usually expect scattered showers and thunderstorms along the front as it approaches
The leading portion of a cold atmospheric air mass moving against and eventually replacing a warm air mass. the front edge of a mass of cold air heading towards a place warm front
The leading edge of an advancing cold air mass that is underrunning and displacing the warmer air in its path Generally, with the passage of a cold front, the temperature and humidity decrease, the pressure rises, and the wind shifts (usually from the southwest to the northwest in the Northern Hemisphere) Precipitation is generally at and/or behind the front, and with a fast-moving system, a squall line may develop ahead of the front See occluded front and warm front
A narrow transition zone separating advancing colder air from retreating warmer air The air behind a cold front is cooler and typically drier than the air it is replacing