What does the "SLP134" signify in a METAR report?

In a METAR report, "SLP134" indicates the sea level pressure, which is specifically measured in hectopascals (hPa). The "134" in "SLP134" stands for 134, which corresponds to a pressure measurement of 1013.4 hPa when converting from the shorthand used in METARs. This is because the value is given in the format of tens of hPa; thus, adding a "0" gives you 1013.4 hPa.

Understanding this notation is essential as sea level pressure affects flight safety, weather forecasting, and understanding atmospheric conditions. Knowing how to read and interpret such measurements can help pilots make informed decisions during flight operations, as pressure changes can signal different weather patterns and safety risks.