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File:Mississippi River mayfly hatch on radar.png

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Description
English: Description on source page: A mayfly hatch along the Mississippi River was caught on Doppler weather radar out of NWS (National Weather Service) La Crosse this evening. The radar view below shows an image at 9:13 p.m. CDT on Saturday, May 29, 2010. The bugs are showing up as bright pink, purple, and white colors along the Mississippi River mainly south of La Crosse, WI. 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.
Français : Un nuage de points correspondant à une émergence d'éphémères (insectes aquatiques émergeant ensemble par millions), ici le long du fleuve Mississippi, observé pris sur les radars météorologiques à effet doppler du NWS (National Weather Service) en soirée. Cette imagerie radar montre la situation à 21h 13 HAC (le samedi 29 mai 2010). Les échos radar matérialisant la présence du nuage d'insecte apparaissent en couleurs vives rose, violet et blanc. Cette tache correspond à un vaste et épais nuage d'insectes (plusieurs mètres d'épaisseur) formé le long du fleuve Mississippi principalement au sud de La Crosse, WI. Après l'éclosion sur la rivière et ses berges, les éphémères ont été dispersés à proximité des zones humides et de la rivière, ils se sont posés et ont disparu du radar, après avoir été plus ou moins dispersés par des vents de sud-sud-est en environ 10-20 minutes.
Date
Source http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=arx&storyid=53064&source=0 (dead link; archived)
Author National Weather Service - La Crosse, Wisconsin

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current15:58, 7 June 2010Thumbnail for version as of 15:58, 7 June 2010700 × 669 (748 KB)Mulad{{Information |Description={{en|1=Description on source page: :A mayfly hatch along the Mississippi River was caught on Doppler radar out of NWS La Crosse this evening. The radar view below shows an image at 9:13 p.m. CDT on Saturday, May 29, 2010. The

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