While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. We assume no responsibility for any decisions made on the basis of the content presented on this site. Weather data is prone to errors, outages, and other defects. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Time zones for airports and weather stations are provided by. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. The sources for the averages shown in the daily temperature chart are discussed in greater detail on this station's Averages Report.Īll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition, by Jean Meeus. We use ISD data to complement and backfill for our METAR archive.

The Integrated Surface Database (ISD), maintained and published by NOAA's National Center for Environmental Information, consists of hourly and synoptic weather reports from a variety of sources. We have been collecting and archiving published METAR reports since 2011, and have found third-party sources for archived reports from years prior to that. They are published via radio transmission and on the internet.

Such reports are used by pilots, air traffic controllers, meteorologists, climatologists, and other researchers. This report graphically illustrates the historical weather reports recorded by the weather station at Tri-Cities Regional TN/VA Airport in 2022.Īirport weather stations throughout the world routinely issue METAR weather reports.

Tri cities airport weather