Meteorology & Weather

A nearby station can provide useful evidence, but its observations do not automatically establish the exact conditions at another location. A meteorologist can compare multiple stations with radar, satellite data, terrain, storm movement, precipitation patterns, and other available observations to determine how representative the recorded conditions are. This is particularly important when weather varies substantially over short distances.

The expert can establish the timing, location, and characteristics of the relevant weather and compare that record with the reported sequence of events and physical evidence. The analysis may test whether wind, precipitation, temperature, lightning, icing, or another atmospheric condition was actually present at the necessary time and intensity. Establishing the weather conditions does not by itself establish that weather caused structural, mechanical, or property damage; those questions may require additional discipline-specific expertise.

The expert can compare forecasts, watches, warnings, and forecast discussions with the observations and atmospheric information available when they were issued. This can help distinguish what was predicted from what later occurred and clarify how conditions evolved over time. Forecasting necessarily begins with observations of the atmosphere, while archived weather records can include radar, surface data, upper-air analyses, and severe-weather reports.