National Weather Service meteorologists measure snowfall by studying radar intensities during winter storms, and more traditional measurements of snowfall rates involve taking ground measurements several times per hour. The more intensely the snow echoes on radar, the faster the rate of snowfall. Lighter radar intensities indicate slower rates. Standard radar images correlate to snowfall rates during a storm based on the intensity and duration of snowfall over a given area.Know More
Snowflakes from very light storms may not show up on NWS radar. When snowstorms produce bigger snowflakes, radar readings indicate how much snow is falling. Meteorologists interpret radar echoes to accurately determine how much snow falls in a certain time period.
NWS weather stations typically take snow depth measurements several times across a six-hour span on snowboards, which are cleared four times per day. Meteorologists report 24-hour and complete storm totals during and after snowstorms.
Amateur meteorologists can measure snowfall several times per hour using a snowboard and ruler to determine the rate of snowfall. For instance, one measurement taken at 5 p.m. indicates a depth of 3.5 inches, and another measurement 15 minutes later shows a depth of 3.6 inches. The change of 0.1 inch is multiplied by four to get 0.4 inch of snow per hour. Automated snowboards with depth sensors have been available since 2004.Learn more about Weather Forecasts
Place a barometer in a location that does not get direct sunlight and that does not have a source of heat, drafts or wind. A sealed-off room with air conditioning is one option.Full Answer >
Isotherm lines that are placed close together on a weather map represent a weather front. A weather front is a boundary between different densities of air in a given region.Full Answer >
A hurricane simulator is a man-made device that replicates the weather conditions of a natural hurricane in a safely contained environment for study. They are comprised of a fan, water tank and wave generator. The simulator creates the conditions of a hurricane by using high-speed winds to mimic the weather disturbances researchers desire to observe.Full Answer >
The weather term “haze” refers to pollution of salt, dust and fine particles that are dispersed through parts of a specific area’s atmosphere. Individually, these particles are invisible, but when grouped together, they form a haze that diminishes visibility.Full Answer >