Science🌪️⛈️ Flashcards
In what conditions does a thunderstorm form?
Sufficient moisture, some mechanism of the air must rise, the portion of the atmosphere that the cloud grows through must be unstable
Stage 1 of Thunderstorm Development
Warm, moist, air rises quickly, and the moisture condenses into a visible cloud. Then updrafts form
Stage 2 of Thunderstorm Development
Precipitation begins to fall
Stage 3 of Thunderstorm Development
Falling precipitation cools the air around it, forming downdrafts
Stage 4 of Thunderstorm Development
Equal amounts of updrafts and downdrafts form convection cells
Stage 5 of Thunderstorm Development
The updrafts slow as downdrafts decrease the supply of warm, moist, surface air
Stage 6 of Thunderstorm Development
The updrafts cease and precipitation stops
Supercells
Powerful, self sustaining thunderstorm that develop intense rotating updrafts
Violent downdrafts concentrated in one local area
Downbursts
Microbursts
Powerful downdrafts that affect an area of less than 4km with winds exceeding 250 km/h
Macrobursts
Downdrafts that affect an area up to 5 km wide with winds of more than 200 km/h