NSSL is working on an experimental instrument train attached to a weather balloon that includes a radiosonde (temperature, relative humidity, wind, altitude), an electric field meter, and a PArticle Size, Image, and Velocity probe (PASIV). The PASIV has an HD camera and a disdrometer. New though, is a GoPro camera attached to the train above the radiosonde looking down as the balloon rises. Excerpts from the video coming soon!
All NOAA National Weather Service Radars have been upgraded with dual-pol capabilities. NSSL spent nearly 30 years researching and developing this technology.
NSSL has released this image documenting the rotation tracks of the devastating tornadoes on April 27-28.