LOL.
There is no weather phenomenon like that in the real world - not a microburst, not a hurricane, not a nuclear explosion!
You are loosing like 200 kts in 20 seconds - I am not sure what kind of weather you are injecting or what ASXP is doing - but the next time you see your airspeed drop like this, fly the airplane, instead of looking at the overhead panel and working the anti-ice switches until you are in a deep deep stall with no authority on your flight-controls due to lack of airspeed.
Immediately put the nose down aggressively, if you have to cut the power to idle to bring the nose down... but first check whats wrong with that weather depiction - the real wind aloft does not change over 100 kts in a few hundred feet, airmass friction will not allow that.
Cheers, Jan