Dal sito del wunderground ecco la testimonianza di un video di uno dei tornado a vortici multipli che ha causato per ora 5 morti.Tutto questo il 10/05/2010
Wunder Blog : Weather Underground
Oklahoma residents are picking up the pieces and surveying the damage after a devastating tornado outbreak that left at least five people dead, dozens injured, and hundreds of millions in damage. Our severe weather expert, Dr. Rob Carver, has some amazing images and videos of the tornadoes in his blog. One solace Oklahomans can take in the disaster is that the data taken by scientists during the tornado outbreak may help forecasters issue better tornado warnings in the future. Usually, a proven way to reduce the incidence of dangerous weather phenomena is to schedule a multi-million dollar field experiment to study the phenomena. This is what happened last year, when the largest tornado field study ever conducted, Vortex2, kicked off. The $10 million study deployed an armada of over 100 storm chasing vehicles across the Great Plains, and were disappointed by one of the quietest tornado seasons in history. But it's pretty tough to have two consecutive record quiet tornado seasons in a row, so the Vortex2 program scheduled the study to run this year as well, beginning on May 1. Unfortunately for the residents of Oklahoma, the atmosphere unleashed one of its classic tornado outbreaks yesterday, in a region NOAA's Storm Prediction Center had outlined at "High Risk" for severe weather. The Vortex2 team was ideally positioned to intercept the tornadoes, according to the team of University of Michigan students that has been writing our featured Vortex2 blog, and I am told that they successfully collected what is probably the best data set even taken of a tornado outbreak. This was no mean feat, since yesterday's storms were moving 60 mph, making it extremely difficult to position the chase vehicles to capture the storm's secrets.