I think it is called a - Squall Line - a solid or nearly solid line or band of active thunderstorms.
Cold fronts are most often associated with severe thunderstorms and tornadoes, but such storms can form along warm fronts, stationary fronts, and dry lines.
The type of front associated with purple triangles and semicircles on a weather map is a occluded front.
Tornadoes frequently form along cold fronts and dry lines. Occasionally they may form along warm fronts. Some tornadoes form from thunderstorms not associated with any fronts.
Tornadoes do not necessarily need any sort of front. Tornadoes will most often form along either a cold front or a dry line, but can on occasion form along a warm front. Hurricanes, which are not associated with fronts at all, often produce tornadoes. Air mass thunderstorms can also produce tornadoes on rare occasions.
At the boundary lines of air masses with different densities and/or temperature. There are cold fronts, warm fronts and occluded fronts. Cold fronts usually move faster than warm fronts.
__*Squall Lines .
Squall Lines
Tornadoes are most often associated with supercell thunderstorms. However, a variety of thunderstorms can produce them including squall lines and multicell clusters.
Blizzards, tornadoes, and thunderstorms can all cause power outages by damaging or destroying power lines.
Thunderstorms and tornadoes most often form along cold fronts but they can form along dry lines and, on rare occasions, warm fronts. Some may form in the absence of any front.
because the lightning hits the the power lines and electricity runs through power lines
Cold fronts are most often associated with severe thunderstorms and tornadoes, but such storms can form along warm fronts, stationary fronts, and dry lines.
The type of front associated with purple triangles and semicircles on a weather map is a occluded front.
Tornadoes frequently form along cold fronts and dry lines. Occasionally they may form along warm fronts. Some tornadoes form from thunderstorms not associated with any fronts.
Tornadoes do not necessarily need any sort of front. Tornadoes will most often form along either a cold front or a dry line, but can on occasion form along a warm front. Hurricanes, which are not associated with fronts at all, often produce tornadoes. Air mass thunderstorms can also produce tornadoes on rare occasions.
In the US, both solid white lines and double white lines are used to mark areas of prohibited lane changes in multi-lane traffic. Broken (dashed) yellow lines, solid yellow lines, and double yellow lines are used to separate traffic moving in opposite directions.
Cumuliform clouds typically form along or ahead of a cold front. Most cloudiness and precipitation associated with a cold front occur as a relatively narrow band along or just ahead of where the front intersects Earth's surface.