A huge mayfly hatch along the Mississippi River

First Mayfly hatch of the year caught on a doppler radar of NWS La Crosse.  The radar view below shows an image from May 29, 2010.  The bugs are showing up as bright pink, purple, and white colors along the Mississippi River mainly south of La Crosse. After the bugs hatch off the water and river areas, they are caught in the south-southeast winds while airborne for about 10-20 minutes.

Link: http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=arx&storyid=53064&source=0

Read more: http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=arx&storyid=53064&source=0