Hey in IAH yeasterday some big storms moved over the field in the early evening and had several windshear alerts up to 55 knots. I noticed a couple - a 73 and a 75 elected to take off on 33L & R right into the the approaching storms as we could see the rain starting to pour onto the north end of the field and move south closing the airport. Was wondering what the thunderstorm policy is - no flame intended.