Issued for winter storm with sustained or frequent winds of 35 mph or higher with considerable falling and/or blowing snow that frequently reduces visibility to 1/4 of a mile or less. These conditions [..]

An uneven distribution of snowfall or existing snow caused by strong surface wind. Drifting snow may occur during or after a snowfall. Freeze

Issued during the growing season when surface temperatures are expected to drop below freezing over a large area for an extended period of time, regardless if frost develops or not. Freezing Drizzle/R [..]

Drizzle that falls in liquid form and then freezes upon impact with the ground or an item with a temperature of 32 degrees Fahrenheit or less, possibly producing a thin coating of ice. Even in small a [..]

A covering of ice on exposed surfaces when the air temperature falls below the frost point. Frost Advisory

When the temperature to which air must be cooled to in order to be saturated is below freezing. Frozen Dew

A form of degree day used to estimate the required energy for heating. One heating degree day occurs for each degree the daily mean temperature is below 65 degrees Fahrenheit. Heavy Snow Warning

A barely visible crystalline form of ice that has the shape of needles, columns or plates. Ice crystals are so small that they seem to be suspended in air. Ice crystals occur at very low temperatures [..]

Issued when damaging accumulations of ice are expected during a freezing rain event. Significant ice accumulations are 1/4 of an inch or greater leading to dangerous walking or driving conditions and [..]

White ice crystals that have combined in a complex branched hexagonal form. Snow Advisory