GEOLOGY

Detailed explanation-1: -Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms.

Detailed explanation-2: -The air mass behind a warm front is likely to be warmer and more moist than the one before the front. If a warm front is approaching, light rain or light winter precipitation is possible before and as the front passes. Behind the front, expect clearing skies, warmer temperatures and higher relative humdities.

Detailed explanation-3: -With a warm front, boundary between warm and cold air is more gradual than that of a cold front, which allows warm air to slowly rise and clouds to spread out into gloomy, overcast stratus clouds. Precipitation ahead of a warm front typically forms into a large shield of steady rain or snow.

Detailed explanation-4: -Rain occurs on the leading edge of a warm front. Since warm air is less dense than cold air, it gradually advances over the cold air in a process called gradual frontal lifting and allows for precipitation to develop ahead of the frontal boundary.

Detailed explanation-5: -More commonly, the meeting of a cold front and a warm front will produce rainfall, because the contact of cold and warm will cause water vapor within either air mass to condense, forming water droplets (if the air mass is sufficiently cold enough, this precipitation will be snow or even hail instead of rain).