Snow Accumulation Mistakes to Avoid in Under 5 Minutes

Accurately measuring snow accumulation is essential for weather reporting, research, and personal records. However, several common mistakes can lead to inaccurate readings. Here's how to avoid them:

1. Measuring on an Inappropriate Surface

Avoid measuring snow on grass, asphalt, or rooftops. These surfaces can distort measurements due to melting or uneven accumulation. Instead, use a flat, level, and open area, such as a snow board—a 24"x16" piece of ½" or ¾" plywood painted white. Place it away from obstructions like trees and buildings to minimize the effects of wind and drifting. (weather.gov)

2. Neglecting to Clear the Snow Board

After each snowfall, clear the snow board to ensure accurate measurements. If measurements are taken at regular intervals, clear the board no more than once every 6 hours to prevent false increases in snowfall totals. (weather.gov)

3. Measuring in Sheltered or Wind-Exposed Areas

Avoid measuring near trees, buildings, or other structures that can shelter the snow, leading to inaccurate readings. Similarly, areas exposed to strong winds can cause drifting, resulting in uneven accumulation. Choose an open, unobstructed area for consistent measurements. (weather.gov)

4. Using Inaccurate Measuring Tools

Use a yardstick or snow stick marked in tenths of an inch for precise measurements. Ensure the measuring tool is straight and free from any obstructions that could affect the reading. (weather.gov)

5. Failing to Account for Snow Compaction

Snow compaction occurs as new snow accumulates on top of older layers, compressing them. To minimize errors due to compaction, measure snow accumulation as soon as possible after the snow has stopped falling. (vlab.noaa.gov)

6. Not Reporting Snowfall in Tenths of an Inch

For consistency and accuracy, report snowfall measurements in tenths of an inch (e.g., 2.4 inches). This standardization helps in data analysis and comparison. (weather.gov)

7. Ignoring Local Guidelines and Standards

Familiarize yourself with local snow measurement guidelines, as practices can vary by region. For instance, the National Weather Service provides detailed instructions on snow measurement procedures. (weather.gov)

By adhering to these guidelines, you can ensure accurate snow accumulation measurements, contributing valuable data for weather forecasting and personal records.