I make a small commission for purchases made through the following links. ? Yaesu 891: https://amzn.to/2RLdPVY ? TekPower: 13.8V Power https://amzn.to/2SQeF0T ? G5RV Antenna: https://amzn.to/2FuCmrR My favorite ham gear: ? Icom-7300: https://amzn.to/2srAkRD ? Sling Shot 4 tree antenna: https://amzn.to/2SRCDZT ? Arborist Throw Box: https://amzn.to/2SSwJr8 ? Throw Bag2: https://amzn.to/2BVfNt1 ... https://www.youtube.com/watch?v=b43qi7qRn5c

As an Amazon Associate I earn from qualifying purchases. ? Storm Lightning Detector: https://amzn.to/2OPRlzv ? Hand Held Weather Station: https://amzn.to/36zZ5y3 ? GoPro Action Camera: https://amzn.to/2TJ1Tnv ? Storm Chasing Handbook: https://amzn.to/2OnPyCQ ? Storm Chaser TShirt: https://amzn.to/2rxclTG ? Glass Mount Antenna: https://amzn.to/2RJzDBu ? Rain-X Windshield Rain Protection: https://amzn.to/2W7ENbB ? Rain-X Wiper Blades: https://amzn.to/2yxLqv0 Shelf clouds are often associated with squall lines, and many times they are reported as wall clouds, funnel clouds, or rotation. Below is a brief review of what a shelf cloud, wall cloud, and funnel cloud look like. Remember, that the main threat with any squall line is severe damaging winds associated with the shelf cloud, although brief spin-up tornadoes can occur. Often times, these tornadoes are rain-wrapped and short-lived. Thunderstorm Basics What is a thunderstorm? A thunderstorm is a rain shower during which you hear thunder. Since thunder comes from lightning, all thunderstorms have lightning. Why do I sometimes hear meteorologists use the word “convection” when talking about thunderstorms? Usually created by surface heating, convection is upward atmospheric motion that transports whatever is in the air along with it—especially any moisture available in the air. A thunderstorm is the result of convection. What is a severe thunderstorm? A thunderstorm is classified as “severe” when it contains one or more of the following: hail one inch or greater, winds gusting in excess of 50 knots (57.5 mph), or a tornado. How many thunderstorms are there? Worldwide, there are an estimated 16 million thunderstorms each year, and at any given moment, there are roughly 2,000 thunderstorms in progress. There are about 100,000 thunderstorms each year in the U.S. alone. About 10% of these reach severe levels. When are thunderstorms most likely? Thunderstorms are most likely in the spring and summer months and during the afternoon and evening hours, but they can occur year-round and at all hours. What kinds of damage can thunderstorms cause? Many hazardous weather events are associated with thunderstorms. Under the right conditions, rainfall from thunderstorms causes flash flooding, killing more people each year than hurricanes, tornadoes or lightning. Lightning is responsible for many fires around the world each year, and causes fatalities. Hail up to the size of softballs damages cars and windows, and kills livestock caught out in the open. Strong (up to more than 120 mph) straight-line winds associated with thunderstorms knock down trees, power lines and mobile homes. Tornadoes (with winds up to about 300 mph) can destroy all but the best-buil ... https://www.youtube.com/watch?v=ADFnB-lMHbA

I make a small commission for purchases made through the following links. Six Flags St. Louis Log Flume Water Ride POV Six Flags St. Louis, originally known as Six Flags Over Mid-America, is a theme park located in Eureka, Missouri, a suburb within southwestern Greater St. Louis. The park is located within the far northeastern portion of the Ozark Plateau, 34 miles southwest of downtown St. Louis, Missouri. The park opened on June 5, 1971. It was the third of only three company start-up parks created by the Six Flags chain. The other two parks built from the ground up were Six Flags over Texas and Six Flags over Georgia. Unlike the other two parks, which are currently managed but are no longer owned by Six Flags, Six Flags St. Louis is still completely owned and operated by the Six Flags corporation. The park branded itself as 'The Coaster Capital of Missouri' in 2013. Admission to Six Flags St. Louis also includes free admission to Hurricane Harbor. ... https://www.youtube.com/watch?v=vzykEeOpSIc

The Universal Laser Systems VersaLaser VLS3.50 is a CO2 laser that emits in the infrared spectrum to cut or etch patterns by vaporizing the substrate. The tool is equipped with optics that focus to spot sizes of 25.4 or 127 microns. The tool accommodates substrates up to 24 x 16 inches and several inches thick. The laser is controlled by CorelDRAW or AutoCAD plotting software. Designs are translated into varying depths, widths, and edge qualities. Cuts with microscale widths as small as 35-120 microns (depending on the substrate)can be achieved. Capabilities Substrates that can be CUT through include: heat-resistant glass (borofloat & fused silica are best), some plastics/polymers, mylar, nylon, papers, some rubber, PDMS (silicone). Sapphire substrates can be cut with care. These materials as well as many metals can be ENGRAVED. Silicon nitride can be etched, somewhat. Unfortunately, silicon wafers and metals such as gold, aluminum and brass are impervious. Processes Available Users have reported success with the following: through holes & channels in glass & quartz wafers for anodic bonding or other uses microtoroid fabrication in thin layers of silicon oxide micromachining plexiglass & PMMA for molds or parts rapid prototyping of polyimide or kapton tape devices precision-cut rubilith masks cutting gaskets & seals in rubber or double-sided tapes direct cutting or etching of PDMS marking metals & silicon wafers with metal marking compounds creating simple paper-based microfluidic devices & stencils microfluidic channels in polymers (Zeonor, PMMA, PDMS, acrylic) ... https://www.youtube.com/watch?v=7fzDdFuY-6c