Which condition would most likely require the National Weather Service to issue a severe

thunderstorm warning? (1 point)
O a large amount of moisture in the air condensing to form clouds
O a meeting of two air masses with major differences in temperature and moisture
O an air mass developing over a large body of water
O a front moving out of an area

The condition that would most likely require the National Weather Service to issue a severe thunderstorm warning is a meeting of two air masses with major differences in temperature and moisture.

The correct answer is 2. A meeting of two air masses with major differences in temperature and moisture is a common trigger for severe thunderstorms, which may include heavy rain, strong winds, and possibly hail and tornadoes.

so 1 2 3 or 4