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METAR Deciphered

Learn to Fly

The last four digits are the time of the METAR/SPECI, which is always given in coordinated universal time (UTC). A “Z” is appended to the end of the time to denote the time is given in Zulu time (UTC) as opposed to local time. The altimeter setting is reported as inches of mercury (inHg) in a four-digit number group.

Weather 52
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Make Your Own METAR Map!

AeroSavvy

Here’s the decoded observation from the above METAR: KLOU Decoded Observation: Time Stamp: 4th day of January, 1653z (UTC Time) Wind: 350 ° at 6 knots Surface visibility: 10 statute miles Clouds: Broken cloud ceiling at 3,800 ft Temp / Dew Point: 3 ° C / -5 ° C Altimeter: 3033 inHg (US reports inches of mercury; most countries use millibars) (..)

Weather 52
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What Are NOTAMs? Notices to Air Missions Explained

Pilot Institute

The start and end dates and times are coded in YYMMDDttt format (UTC time). B) 2106231700 is the start time and date in UTC. C) 2106232300 is the end time and date in UTC. High-pressure conditions decrease altimeter accuracy, affecting terrain clearance and aircraft spacing. Each subject has its own FAA keyword.

NOTAMs 52