Morning anons…
Not sure we can call "War Zone" a credible source…but what is these days…
https://www.courierpress.com/story/opinion/columnists/jon-webb/2019/01/15/more-chaff-additional-blips-deepen-radar-mystery/2583764002/
"Back on Dec. 10, the Evansville area was embroiled in intrigue when mysterious radar blips appeared over Southern Illinois and Western Kentucky. The long lines baffled the National Weather Service because they looked like storms – but it wasn’t raining.
The War Zone eventually confirmed the anomalies arose when a C-130 traveling to West Virginia from a military exercise out west released over our area huge plumes of military chaff – radar-jamming material mostly composed of aluminum."