In the huge tropical storm years of 20, tropical activity was very quiet until the end of August, and then it was like someone flipped a switch, and every area of clouds seemed to rapidly develop. Most years have nothing on the map at this point, except some tropical waves. So there is nothing unusual at all for nothing to form at this time of year. At that point, the odds shoot way up quickly, for a whole bunch of climatological reasons. No clouds, no convection, and nothing to organize into a tropical cyclone.īut it is uncommon for storms to form prior to the end of August. Clouds cannot form in an inversion layer, period. This is the most stable at atmosphere can be. Sometimes the temp actually rises with height, and this is called an inversion. Warm layers aloft are called cap layers, because they stop convection from occurring. IOW, the environmental lapse rate must be higher than the adiabatic rate. Rising air needs to continuously rise into cooler air as it rises and cools, or it will stop rising. Warm air aloft inhibits convection all by itself, strongly. On a different note, Sahara dust inhibits storm formation via a few mechanisms, but the most important is probably that the dust absorbs solar energy and thus heats up the layer in which the dust resides. Only once conditions are good and a storm forms do forecasts have much value at all. No one can possibly know ahead of time how many there will be, where they will form if they do, how strong they will get, and where they will move. So anyone predicting more than usual based on ocean water temps is making a guess with little basis in historical trends.Īnd all such forecasts are just that, guesses. Once a pocket a Saharan Dust begins moving westward over the Atlantic, it is relatively easy to track using infrared satellite products.Įl nino years are noted for having less than average number of tropical storms in eh Atlantic Basin. Since one of the key ingredients for tropical cyclone development is a deep feed of moisture, Saharan Dust often acts to inhibit tropical development. The Saharan Air Layer is a well-mixed dry pocket of air that usually resides between 5,000 and 15,000 feet above sea level. This dust is carried in the African Waves which push westward into the Atlantic Ocean. The Saharan Air Layer, also known as Saharan Dust, is made of sand, dirt, and other dust that is lifted into the atmosphere from the vast desert area that covers most of North Africa. NOAA has a description here.Īt MyFoxHurricane, they have this to say: The water is very warm so after the dust disperses there is a risk for strong hurricane to develop as we get later in the month!Īnd there you have it, “dust in the wind” is preventing formation of “Cape Verde” type hurricanes. This has prohibited the development of tropical storms over the region. This is a satellite picture with the colors showing dry air & Sahara Dust coming across the Tropical Atlantic. Check out the article about the vintage photo editor if you want to make old retro pictures.Meteorologist Ross Hays writes on Facebook: You can create all kinds of vintage photo effects with MockoFun online photo editor using photo filters. If you want to use these dust PNG images online try MockoFun and create grunge photo effects in just a few seconds. Go to Edit > Define Brush to make brushes from these dust images. To make such an effect, you need a Photoshop dust brush. See these dust effect Photoshop tutorials for more details on how to achieve this look. The Photoshop particle effect is a really cool looking effect. You can use these dust png images to make a disintegration effect or a dispersion effect. The set includes 9 dust texture png images in PNG format with transparent background:Īnd, if you are looking for JPG textures and overlays to make a grunge effect, you can try my set of free dust textures. If you want to add a grunge effect or a distressed texture to your pictures, you can use my set of free dust png images. The pack contains 9 dust PNG images with transparent background (try my Photoshop action for removing white background).Ĭreate a realistic dust effect in just a few simple steps! Just add the dust png overlay over your image. Dust PNG images that you can use in your graphic design projects to create grunge effects, noise, scratches, etc.
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