Saturday, 11/02/2024

Metar is a python package for interpreting METAR and SPECI coded weather reports. METAR and SPECI are coded aviation weather reports. The official coding schemes are specified in the World Meteorological Organization (WMO) Manual on Codes, vol I.1, Part A (WMO-306 I.i.A). US conventions for METAR/SPECI reports vary in a number of ways from the international standard, and are described in chapter 12 of the Federal Meteorological Handbook No.1. (FMH-1 1995), issued by NOAA. See This module handles all main-body groups in reports that follow the WMO spec or the US conventions, except for trend groups. The most useful remark groups defined in the US spec are parsed, as well, such as the cumulative precipitation, min/max temperature, peak wind and sea-level pressure groups. No other regional conventions are formally supported, but a large number of variant formats found in international reports are accepted.""" Current and historical METAR data can be obtained from various places. The current METAR report for a given airport is available at the URL .TXT> where is the four-letter ICAO airport station code. The accompanying script get_report.py will download and decode the current report for any specified station. The METAR reports for all stations (worldwide) for any "cycle" (i.e., hour) in the last 24 hours are available in a single file at the URL Z.TXT> where is a 2-digit cycle number (e.g., "00", "05" or "23"). The WMO and US code specifications (and a file listing the ICAO station codes) are available from my website at http://homepage.mac.com/wtpollard/Software/FileSharing4.html. Author: Tom Pollard

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