Although not a factor in this crash, always remember ceiling heights reported from surface based weather observations, i.e. METARs, are AGL, (Above Ground Level), NOT above MSL (mean sea level). Forecast cloud heights in Area Weather Forecasts are ASL, (above sea level), unless noted.
Also remember wind direction in METARs are "True", NOT magnetic. Winds on the ATIS and winds reported by Tower are, or course , magnetic. There are exceptions to the reporting standard, usually reserved at sites located in extreme latitudes.
Curiously, the prevailing visibility as reported in most North American METARs are in STATUTE MILES. (a unit of linear measure equal to 5,280 feet, or 1,760 yards (approximately 1.609 kilometers, or 0 .86 of a nautical mile).
Last edited by evansb; 9th Mar 2019 at 20:03.