The Tools and Concepts for Forecasting Winter Precipitation

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 […]

Historic snowstorm in North Texas on 2/12/2010. DFW recorded its greatest 24-hour snowfall of all time (12.5").

General Snow Forecasting

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 […]

Snow to Liquid Equivalent and Associated Forecasting Pitfalls

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 […]

Intermountain California Braces For Incredible Amounts of Rain and Snow

The “atmospheric river” is taking a direct aim on California, and that will result in eye-popping rainfall totals, heavy mountain snow accumulation, flooding, and mudslides. Weather conditions are ideal for an impressive and climatologically rare heavy-rain event over the weekend over a large section of California. Rainfall amounts from 8 to 12 inches are expected. […]

Unlucky 7 Snowiest Cities in the U.S.

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 […]

Snow depth & percent coverage maps

Our high-resolution snow depth maps are updated several times a day and include the United States and much of Canada. ● Today’s Snow Cover Stats ● Interactive Map ● N. Hemisphere Sea Ice Anomaly Current Snow Cover on Google Maps (High-Res)         Return to the top Return to the top Today’s Snow-Cover […]

simulate the formation of snow, sleet, and freezing rain

What determines if snow, sleet, or rain will form?

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. You must use an up-to-date browser version to view this simulation.

Snowfall records for every year since records began

Snow: monthly & annual snowfall records for DFW since 1898

This table shows the total snow and ice accumulations for every relevant month since September 1898 at DFW. Weather records at DFW began ago on September 1, 1898. Jump to statistics for the 30-year period 1981-2010 (DFW normal/average snowfall amounts and number of days annually) Other Weather Records: DFW Rainfall Record Since 1898 Monthly Precipitation […]