warm front
The Warm Fronts are the one that usually produce several hours of moderate-to-light precipitation over a large region.
The clouds that usually produces precipitation are called cumulus, cumulonimbus and nimbostratus clouds. These clouds are in the lowest level of the atmosphere.
They usually not bring precipitation.
Typically clouds that produce precipitation will have either the Nimbo- prefix or -nimbus suffix. Clouds that produce precipitation (rain, snow, sleet, hail...etc) will normally appear lower in the sky such as the Nimbostratus & Cumulonimbus. There are different variations of these clouds with variations of the above names. Double-click on the terms "Nimbostratus" or "Cumulonimbus" to get the definition from AnswerTips!
Tornadoes do not produce precipitation. Tornadoes are usually often accompanied by precipitation, but the amount is not related to the strength of the tornado.
warm front
The Warm Fronts are the one that usually produce several hours of moderate-to-light precipitation over a large region.
The clouds that usually produces precipitation are called cumulus, cumulonimbus and nimbostratus clouds. These clouds are in the lowest level of the atmosphere.
Nimbostratus
nimbostratus....
Nimbus is a suffix meaning 'precipitation'. When you add nimbus to a cloud's name, it usually means the cloud produces precipitation. For example, 'cumulonimbus clouds'.
a nimbus cloud that produces precipitation. usually the precipitation reaches the ground as rain, hail or snow, however, that is not requirement, falling precipitation may evaporate as virga.
warm front
It is true to say precipitation usually comes ahead of a warm front.
No, usually only Nimbus clouds produce noticeable precipitation.
They usually not bring precipitation.
The precipitation does NOT cause the rise or fall in the barometer. However precipitation is more usually associated with an atmospheric depression (a cyclone) and thus a fall in the barometer will usually FORETELL precipitation.