it cools the atmosphere. Today we saw snow while it was 47 degrees in the area!
Answer Save. How (why) can it snow at 40 degrees? Anywhere above 50 degrees, and the ground level temperatures melt the snow into rain before it can be seen. What this means rain cannot freeze near the ground to create snow To understand why the snow didn't melt and turn into rain requires us to understand a little more about water. In order to snow at these temps the atmosphere has to be completely at or below 32, with no warm layer aloft. To identify if this could occur, let's take a look at the dewpoint and humidity as of 4 pm today.In addition to the evaporative/sublimation cooling, when precipitation falls, it can draw the colder air from above toward the ground creating a cool pocket of air around the shower or t-storm. Guess I was right because it looked just like the picture above. Let's look at the picture. I was going to take a picture, but my phone battery was too low & I didn't have my charger with me :( Thanks for the meterology lesson Mark!! When water changes phase, let's say water from liquid to a gas form, there is an energy exchange with air that is around it. With snow, the clouds are not high enough to have raindrops freeze into ice. Clipper systems create convective types of precipitation or "bursts". In order to snow at these temps the atmosphere has to be completely at or below 32, with no warm layer aloft.
How Can It Possibly Snow When Is 40 Or Even 50 Degrees OutsideHow Can It Possibly Snow When Is 40 Or Even 50 Degrees OutsidePolar Vortex Temperatures To Plunge 40 Degrees Celsius AsTwo Feet Of Snow 40 Degrees Possible As Storm Roars EastXinjiang Records Lowest Temperature Of Minus 40 Degrees CelsiusNew Year S Eve Will Be Almost 40 Degrees Colder Than Usual CnnRecord Breaking Cold Spell Grips Eastern Turkey Daily SabahFantastic Scenery Of Daxinganling At Minus 40 Degrees China CnAmerican Kids Stay Home When It Snows While China Keeps SWhen The Temperature Drops To Minus 40 ºc For More It can snow up to 45 if the conditions are just right. This energy exhange is known is latent heat. Temperatures must be 32 degrees or lower in the clouds where snowflakes form, but because the flakes can fall more than 1,000 feet without melting, they can … I argued this because clipper systems provide such good lift that they are notorious for producing these showers in Kentuckiana. It is critically important to note, that snow cannot form … Can It Snow At 40 Degrees On March 22, 2019 By Jaka Santuy Xinjiang records lowest temperature of china frozen food hits the market as daxinganling at minus 40 degrees life threatening cold hits corridor daxinganling at minus 40 degrees Temperatures are taken at the ground level, not up in the clouds or actual air, people seem to confuse that! Remember we only live at the ground, but there is a whole atmosphere above us that impacts what goes on at the surface. Everyone knows that water freezes at 32 degrees, so it cannot snow if the temperature isn't 32F degrees right? Also for it to snow at these temps, the dew point has to be at 32 degrees or below.
This is called latent heat of vaporization or latent heat of sublimation depending on whether it is water or ice. Remember we only live at the ground, but there is a whole atmosphere above us that impacts what goes on at the surface. If you can get massive evaporation or sublimation under a cloud, then you can create a very cold environment right under the cloud regardless of what is going on around it. That water or snow evaporating into the air was critical to my forecast today. Update 2: My thermometer is about 6 feet above my porch, which makes my thermometer about 12 feet above the lawn ground level. (Clarksville, Arkansas) Update: (It is snowing here now, and of course it melts when it hits the ground. In fact, this happens quite often in our area. So yes, as the graphic shows in the column that's second from the right, snow can fall all the way to the ground even when temperatures are above freezing at the surface.
I said the GFS was the only accurate model that was accurately catching the snow showers that would occur.