The Hydrometeor Classification algorithm shows much of it to be Biological in nature. You may have noticed a lot of fuzziness (low reflectivity values) on our radar recently. The National Weather Service office in Baltimore/Washington, DC, tweeted this image, that caught a lot of attention over the weekend. “While weather radar is very precise, it would likely take hundreds of thousands, if not millions of cicadas to be able to see what we saw yesterday on radar,” said CNN meteorologist Dave Hennen. The big, black-winged insects that have emerged after their 17-year slumber were in such large numbers, they showed up on radar. What could have easily been mistaken for rain, wasn’t.
