As the lower and cooler air lifts the warm moist air, its water condenses, creating a cloud which often rolls with the different winds above and below. This outflow cuts under warm air being drawn into the storm’s updraft. Cool, sinking air from a storm cloud’s downdraft spreads out across the land surface, with the leading edge called a gust front. Rising cloud motion can often be seen in the leading (outer) part of the shelf cloud, while the underside often appears turbulent and wind-torn. Thousands of new, high-quality pictures added every day. A shelf cloud is attached to the base of the parent cloud, which is usually a thunderstorm cumulonimbus, but could form on any type of convective clouds. Find Thunderhead Clouds stock images in HD and millions of other royalty-free stock photos, 3D objects, illustrations and vectors in the Shutterstock collection. However, this scary-looking cloud is not a tornado. The gust front winds are strong and can cause damage with straight-line winds. ![]() You are feeling the gust front which is typically the boundary out ahead of the thunderstorm. Roll clouds may also arise in the absence of thunderstorms, forming along the shallow cold air currents of some sea breeze boundaries and cold fronts.Ī shelf cloud is a low, horizontal, wedge-shaped arcus cloud. As the shelf cloud passes, you can quickly feel the shift in wind direction and wind speeds pick up. Arcus clouds most frequently form along the leading edge or “gust fronts” of thunderstorm outflows some of the most dramatic arcus formations mark the gust fronts of derecho-producing convective systems. We've received dozens of pictures from a storm that moved through central Wisconsin on July 12th - it was quite the picturesque storm, with what is known as a 'shelf cloud' leading the way. issues alert for 11 districts in Uttarakhand. IMD predicts heavy to very heavy rainfall in Uttarakhand, UP & West MP. ![]() Roll clouds and shelf clouds are the two main types of arcus. Viral video of shelf cloud in Haridwar sparks curiosity. Although not as photogenic as many of the images above, the. The Shelf Cloud is a type of arcus cloud that is a low, horizontal cloud formation, usually appearing as an accessory cloud to a cumulonimbus. A spectacular shelf cloud is illuminated with an impressive range of hues in central Nebraska. The cloud came along with a nowcasting alert for imminent severe weather (Code Red) issued by the National Meteorology Administration.įurtuni Romania has announced the phenomenon also posting some photos capturing the famous cloud, highly appreciated by the storm hunters. A Shelf Cloud has been captured in Mamaia resort on the Romanian Black Sea coast on Tuesday afternoon during a storm.
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