Let’s everyone be careful out there. I have witnessed some strange things in the last month. On the 22nd at JFK with level 5 thunderstorms in the area a KLM flight took off with a 16 knot tailwind on 22R with a huge cell 3 miles N and tower calling a wind shear alert. After a runway switch to 4 a Aero Mexico flight accepted a take off clearance with no available departure path and WS alerts and only cancelled take off when they got a onboard WS alert. 2 minutes later a Ethiopian inbound flight landed on 4R after declaring a fuel emergency. As they touched down we were getting onboard radar windshear alerts for the arrival corridor. The cell over JFK had tops reported at 56,000 feet at that time.