| Answering what is a warm front depends on | | | | This is opposed to solid lines with pointed triangles |
| knowing cold fronts. Under normal circumstances | | | | that represent cold fronts. |
| warm air cannot displace a mass of cold air. | | | | Unlike cold fronts, warm fronts are not typically |
| Masses of cold air are often called cold fronts and | | | | associated with devastation. This and other warm |
| are often denser than warm air. Since the two | | | | air mass conditions put warm fronts in stark |
| types of air have different densities and | | | | contrast to cold fronts. The following are what |
| temperatures, they also cannot mix. What usually | | | | you would expect when a warm air mass |
| happens when there is a cold front is that warm | | | | approaches or passes:o Temperature conditions |
| air is displaced and moves over the cold air. This | | | | during warm fronts are opposite of that during |
| is because warm air is lighter. Once there, warm | | | | cold fronts. Before a warm front passes, the |
| air will grow cooler and form into clouds. | | | | temperature is noticeably cooler. If you are |
| In some cases, cold fronts will not cause any | | | | directly in line as a warm air mass passes, you will |
| significant weather changes. If there is sufficient | | | | notice a quick change in temperature towards |
| moisture however, cold fronts can lead to rain | | | | warmer levels.o Cold fronts may lead to strong |
| showers and thunderstorms that can last for | | | | showers. Warm fronts however are typically |
| weeks. Severe storms can even be accompanied | | | | accompanied only by light showers and drizzling |
| by floods and tornadoes. Floods in particular do | | | | especially as the warm front passes. Despite the |
| not quickly dissipate because cold fronts take | | | | drizzle though, surroundings can still feel more |
| some time to pass through. | | | | humid.o Winds in the southern hemisphere will |
| So what is a warm front? They are simply what | | | | blow north to northeast. Those in the northern |
| cold fronts are not. Warm fronts are the front | | | | hemisphere will blow south to southeast. As the |
| portions of warm masses of air that move in to | | | | warm air mass passes, the direction of the winds |
| replace preceding cool air. As expected, air in | | | | will shift.o Visibility as a warm front passes will be |
| front of the warm air mass is cooler than air | | | | poor and hazy. Sometimes, fog can also form |
| behind warm fronts. In weather maps, it is | | | | near the ground.o Atmospheric pressure during |
| represented by solid lines with semi circles or | | | | the passage of warm fronts will fall and then rise |
| rounded lumps attached to the front of the lines. | | | | and then fall again after it passes. |