| Caption | A ragged shelf cloud, marking the gust front preceding a squall line, is seen south of Maryville, Missouri, on the afternoon of June 11, 2015. Shelf clouds form when cold, dense air from a thunderstorm's downdraft flows underneath and lifts warm, moist air surrounding the storm. | |
| Photo Id | w6944-b73e-d84d4 | |
| Date and Time | June 11, 2015 4:56 PM | |
| Location | Maryville, Missouri latitude 40° 17' 9.9" N longitude 94° 52' 34.4" W | |
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| Model Release | No, but a release may not be required for this photo. | |
| Keywords | shelf cloud, arcus cloud, squall line, storm, thunderstorm, gust front, outflow boundary, downdraft, outflow, weather, Maryville, Nodaway County, Missouri, MO, United States, dramatic, danger, dangerous, ominous, menacing, threatening, frightening, risk, peril, hazard | |
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