2 ms·

What is a microbust?

arealaccount 4y ago
Its a burst of strong updrafts or downdrafts, it’s very dangerous in aircraft. Video of some small airplanes attempting to fly in microburst conditions: https://m.youtube.com/watch?v=b_WmjWAGkLI https://m.youtube.com/watch?v=b_WmjWAGkLI
TylerE 4y ago
Powerful downburt. The air can be descending at thousands of feet per minute. A fairly recent incident that did result in a crash: https://en.m.wikipedia.org/wiki/Aeroméxico_Connect_Flight_2431 https://en.m.wikipedia.org/wiki/Aeroméxico_Connect_Flight_24...
tjohns 4y ago
A microburst is an intense column of descending air that sometimes occurs within thunderstorms. They are incredibly hazardous, and often produce downdrafts that exceed 6,000 feet per minute - well beyond even an airliner's climb performance. See: - https://en.wikipedia.org/wiki/Downburst https://en.wikipedia.org/wiki/Downburst - https://www.boldmethod.com/learn-to-fly/weather/microbursts-and-how-they-affect-your-airplane-and-performance/ https://www.boldmethod.com/learn-to-fly/weather/microbursts-... There's an entire list of disasters where an airliner inadvertently flew into a microburst and couldn't escape in time. Pilots are trained to avoid the conditions that create them, and some airports have LLWS warning equipment to help identify when they're occuring (such as the TDWR system, which shares the DFS spectrum used by 5 GHz WiFi).
jacquesm 4y ago
A lot of air moving down as one large mass. One happened a few km from here two years ago, just over a canal that carries a lot of shipping from Utrecht to Amsterdam. Along the side of that canal there are long rows of pretty sturdy trees. Over about two hundred meters they had all snapped like matchsticks, a few meters above the ground. The theory on why this happened is that the air has to go somewhere when it reaches the bottom, converting a large mass of air moving downwards into a large mass of air moving sideways and that happened to coincide with the treeline base. Here are some pictures of that event: https://www.parool.nl/nieuws/bomen-als-luciferhoutjes-omgeknakt-langs-amsterdam-rijnkanaal~b489d768/?referrer=https%3A%2F%2Fwww.google.com%2F https://www.parool.nl/nieuws/bomen-als-luciferhoutjes-omgekn... The way those trunks are splintered is interesting, normally a tree under wind pressure will topple as a whole, so this must have happened extremely quickly for the tree base not to have moved but the top to be snapped off.

Its a burst of strong updrafts or downdrafts, it’s very dangerous in aircraft. Video of some small airplanes attempting to fly in microburst conditions: https://m.youtube.com/watch?v=b_WmjWAGkLI https://m.youtube.com/watch?v=b_WmjWAGkLI

TylerE 4y ago

Powerful downburt. The air can be descending at thousands of feet per minute. A fairly recent incident that did result in a crash: https://en.m.wikipedia.org/wiki/Aeroméxico_Connect_Flight_2431 https://en.m.wikipedia.org/wiki/Aeroméxico_Connect_Flight_24...

tjohns 4y ago

A microburst is an intense column of descending air that sometimes occurs within thunderstorms. They are incredibly hazardous, and often produce downdrafts that exceed 6,000 feet per minute - well beyond even an airliner's climb performance. See: - https://en.wikipedia.org/wiki/Downburst https://en.wikipedia.org/wiki/Downburst - https://www.boldmethod.com/learn-to-fly/weather/microbursts-and-how-they-affect-your-airplane-and-performance/ https://www.boldmethod.com/learn-to-fly/weather/microbursts-... There's an entire list of disasters where an airliner inadvertently flew into a microburst and couldn't escape in time. Pilots are trained to avoid the conditions that create them, and some airports have LLWS warning equipment to help identify when they're occuring (such as the TDWR system, which shares the DFS spectrum used by 5 GHz WiFi).

jacquesm 4y ago

A lot of air moving down as one large mass. One happened a few km from here two years ago, just over a canal that carries a lot of shipping from Utrecht to Amsterdam. Along the side of that canal there are long rows of pretty sturdy trees. Over about two hundred meters they had all snapped like matchsticks, a few meters above the ground. The theory on why this happened is that the air has to go somewhere when it reaches the bottom, converting a large mass of air moving downwards into a large mass of air moving sideways and that happened to coincide with the treeline base. Here are some pictures of that event: https://www.parool.nl/nieuws/bomen-als-luciferhoutjes-omgeknakt-langs-amsterdam-rijnkanaal~b489d768/?referrer=https%3A%2F%2Fwww.google.com%2F https://www.parool.nl/nieuws/bomen-als-luciferhoutjes-omgekn... The way those trunks are splintered is interesting, normally a tree under wind pressure will topple as a whole, so this must have happened extremely quickly for the tree base not to have moved but the top to be snapped off.