Those of us who live around Atlanta, Georgia or Dallas, Texas, who only see around 2 or 3 inches of snow per year on average, can be heard complaining during the winter when a snow event occurs. There are, however, many cities around the nation where considerably more snow falls and it becomes part of the … Read more
How to Recognize, Treat and Avoid Hypothermia It’s a fact of life that our kids still have to stand in the bitterly cold temperatures while they wait for their bus. Fortunately, they aren’t exposed to the cold for too long; assuming the bus driver is on time, they will soon be on the warm bus … Read more
Introduction The title is a question that is frequently asked of meteorologists, especially in the wake of an abnormally warm or cool season; it is a topic of interest among atmospheric scientists and the general public alike. In this article, we will attempt to answer this question using climatology, casting aside gut feelings and old … Read more
Introduction This informative forecast writing will focus on the weather forecasting tools and concepts that are used to predict winter weather events. There are various types of winter weather events that are analyzed and forecasted including mid-latitude cyclones, ice storms, lake-effect snows and sleet storms. Each of these will be discussed separately. In addition, bust … Read more
Snow is a precipitation type that results from the build-up of ice deposition upon condensation nuclei. The snowflake size is amplified as ice crystals join together as the crystals move in the wind. A common theme in ice crystal development is the 6-sized structure of the ice crystals. The chemical bonding of ice molecules produces … Read more
The snow-to-liquid equivalent is the amount of liquid precipitation that is produced after melting snow. The temperature profile of the troposphere and the surface temperature are important factors that determine this value. The “average” snow-to-liquid ratio is 10:1. This is saying that if 10 inches of snow fell and that snow was melted it would … Read more
Section 1: Is it Going to be a Big Deal? One of the more difficult forecasts to make is the winter precipitation forecast. The complexity is with determining precipitation type, areal coverage, and whether any winter precipitation will accumulate at the ground surface in the first place. The public is very sensitive to winter forecasts … Read more
It’s that time of year… Winter. The season when those unrealistic snow and ice accumulation maps, for an unlikely event 10 days into the future, that often go viral on social media. So, I wanted to briefly discuss the nature of internet weather hype and how you can learn to recognize it. As the National … Read more
Our high-resolution maps of accumulated snowfall are updated several times a day for the United States and much of Canada. ● Today’s Snow Cover Stats ● Interactive Map Snow Cover Map (Current – High-Resolution) Note: Refresh the browser if data fail to load Today’s Snow-Cover Percent, Depth, & Liquid Equivalent (SWE) These stats include the … Read more
Explore the type of precipitation Set the air and dew point temperatures by dragging the anchor points and learn what type of precipitation will fall to the ground. Each time you release the mouse button, the simulation starts. Note: Temperature is shown in degrees Celsius. To see the corresponding temperature in degrees Fahrenheit, check out … Read more
Currently in AtlantaThe temperature is ºF. The wind chill in Atlanta is . Georgia & Alabama Wind Chill Map Other Regions Southern Plains Southeast Wind Chill Calculator Calculate the windchill Index Windchill Calculation Enter in the air temperature (Tair) in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute … Read more
Currently at Dallas – Fort Worth International AirportThe temperature is ºF. The wind chill is . Texas Wind Chill Map Other Regions Southern Plains Southeast Wind Chill Calculator Calculate the windchill Index Windchill Calculation Enter in the air temperature (Tair) in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to … Read more
This chart shows the largest amounts on record for a calendar day. Snow Amount Rank Date 11.20″ 1 Feb 11, 2010 (Thu) 7.80″ 2 Jan 15, 1964 (Wed) 7.50″ 3 Feb 17, 1978 (Fri) 4.70″ 4 Nov 13, 1976 (Sat) 4.50″ 5 Mar 01, 1942 (Sun) 4.30″ 6 Jan 16, 1964 (Thu) 4.00″ 7 Jan … Read more
Atlanta’s biggest snowfall events of all time are listed in the table below. The most snow ever recorded on a single day in Atlanta was on January 23, 1940 when 8.3 inches fell. The top 10 snowstorms in Atlanta have a median accumulation of 4.2 inches. View the full list We often hear the cliche: … Read more
Cold-air damming (CAD), often called “the wedge” in the Southeast, is an interesting meteorological feature that can result in tricky forecasts for meteorologists. Topography plays a major role in CAD events, and you need a mountainous range for this feature to develop. While CAD can occur in the Rockies, it is predominant east of the … Read more
When it comes to winter weather, there is no shortage of advisory types. This page is devoted to the four main winter weather products: Winter Storm Watch, Winter Storm Warning, Winter Weather Advisory, and Ice Storm Warning. More specifically, I want to discuss the criteria used by the National Weather Service Office in Fort Worth, … Read more
Before I begin this piece, I want to present a challenge. The following chart shows the actual high and low temperatures for a full month in Atlanta, Georgia. *A condensed version of this writeup was also featured in the Douglas County Sentinel. Challenge: Can you spot the day with a historic snowstorm? During this particular … Read more
The National Weather Service has sole responsibility for issuing weather watches and warnings. When it comes to winter weather, there are numerous advisory types ranging from Wind Chill Advisories to Ice Storm and Blizzard Warnings. This page is devoted to the four main winter weather products: Winter Storm Watches, Winter Storm Warnings, Winter Weather Advisories, … Read more
As a NOAA Weather-Ready Nation Ambassador, iWeatherNet strives to create educational content to help you be prepared for any type of severe weather; this includes winter weather. I wanted to take the opportunity to briefly review the various winter weather products issued by the Atlanta National Weather Service in Peachtree City. Other States Central Alabama: … Read more
In an earlier article, we discussed the dynamics and thermodynamics of lake effect snow. In this post, we discuss the meteorological differences between single-band and multiple-band lake-effect snow events. Keep in mind that all lake-effect snow events are fueled by moisture and latent heat flux from the relatively warm lake water; these fluxes are already … Read more
One of the most awe-inspiring forces of nature is lake-effect snow. The amount of latent energy required to produce the lake-effect convection is astounding, and in some situations, snowfall rates can reach as high as 5 to 6 inches per hour. In this article, we discuss the atmospheric physics, dynamics, and thermodynamics responsible for the … Read more