Share your favorite shelfies (photos or video of shelf clouds) to our /photos gallery, our Facebook page, or via Twitter MORE PHOTOS: 10 Spectacular Clouds | Earth's Highest Clouds | Hole-Punch Clouds) MORE ON WEATHER. Rain-chilled air descends in a thunderstorms downdraft, then spreads laterally when. The National Weather Service in Lubbock, Texas, documented a spectacular case of cold-frontal roll clouds in late September 2007. A shelf cloud is the boundary between a downdraft and updraft of a thunderstorm or line of thunderstorms. Either the gust front surged well away from the parent thunderstorm(s), or the thunderstorm(s) may have fizzled, leaving this remnant roll cloud.Īdvancing cold fronts have also triggered roll clouds on occasion. Unlike a shelf cloud, the roll cloud is detached from its parent thunderstorm(s). Wind gusts once the shelf cloud has passed may be quite strong, causing downed trees, tree limbs and power outages. When this warm, moist air condenses, you see the shelf cloud.Īs the shelf cloud passes, you feel an abrupt shift in wind direction and increased wind speed, followed within minutes by heavy rain or hail. Warmer, more moist air is lifted at the leading edge, or gust front, of this rain-cooled air. A shelf cloud is attached to the base of the parent cloud, which is usually a thunderstorm. DS60 EXPANSION SHELF with 240TB Installed. A shelf cloud is a low, horizontal, wedge-shaped arcus cloud. How to replace a Disk Drive in a DS60 ShelfIn this video, we will cover the process of replacing a failed disk drive in a DS60 expansion shelf. Rain-chilled air descends in a thunderstorm's downdraft, then spreads laterally when reaching Earth's surface. Data volumes will continue to increase and migrate to the cloud. What you're seeing in a shelf cloud is the boundary between a downdraft and updraft of a thunderstorm or line of thunderstorms. ( PHOTOS: Scary Clouds That Are Not Tornadoes) While menacing in appearance, shelf clouds are not tornadoes or wall clouds. Auf dieser Seite finden Sie alle Informationen der Deutschen Rentenversicherung, die jetzt wichtig sind: Beratung und Erreichbarkeit, Online-Antragstellung, Servicetipps und vieles mehr. Shelf clouds are typically seen at the leading edge of a thunderstorm or squall line of thunderstorms. Coronavirus - Service und Informationen Die Corona-Pandemie bedeutet drastische Einschnitte in allen Lebensbereichen. To understand how roll clouds form, we first must explain how shelf clouds develop. Dream Cloud 19.69' Bathroom Glass Shelf Wall Mount Brass Material, Gold. The first two photos in the slideshow from Lake Hendricks, Minnesota, on June 20, 2015, show a terrific example of a roll cloud. Based on their appearance, we certainly understand why.Ī more rare variety of this type of cloud, a roll cloud, resembles a giant rolling pin in the sky. A shelf cloud, also known as an arcus or arc cloud, may be the most frequently submitted cloud photo to our photo gallery and Facebook page.
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