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DECODING THE METAR

METAR terminology can be confusing for new and old pilots alike.


Here's what you need to know.


WHAT IS A METAR?

A METAR is a current observation of surface weather for the reporting airport.


SAMPLE METAR

KOGD 091753Z VRB05KT 10SM CLR 09/M02 A3032 RMK A02 SLP257 T00941022


DECODING THE SAMPLE

KOGD = The station identifier.

This is for the Ogden, UT Airport.

091753Z = This is the date and time (in zulu format) that the report was given.

The date for this report is the 9th of the month at 1753 zulu time.

VRB05KT = Wind direction and velocity.

The wind direction in this report is variable.

The wind velocity is 05 knots.

10SM = Statute Miles of visibility.

The visibility in this report is 10 Statute Miles.

CLR = Sky Condition.

The sky condition in this report is clear skies.

09/M02 = Is the temperature and dewpoint in degrees Celsius.

The temperature in this report is 9 Celsius.

The dewpoint in this report is negavite 2 Celsius.

A3032 = Current altimeter setting.

The current altimeter setting in this report is 30.32".

RMK = Remarks.

Anything following the RMK indicates there are additional remarks for this report.

A02 = Automated reporting station type 2.

There are 2 types of automatic reporting stations:

Type 1 - An automated report without a precipitation discriminator.

Type 2 - An automated report with a precipitation discriminator.

SLP257 = Sea Level Pressure in millibars.

If the first number after the "P" is between 0-5, add the number 10 in front.

Example: SLP257 means millibar pressure is 1025.7.

If the first number after the "P" is between 6-9, add the number 9 in front.

Example: SLP823 means millibar pressure is 982.3.

T00941022 = Temperature and Dewpoint to the tenth of a degree.

In this report the temperature is 9.4 Celsius and the Dewpoint is -2.2 Celsius.


OTHER METAR DESCRIPTORS

Not all METAR Descriptors were covered in the example above.

Below you can see a breakdown of all the descriptors.


Author - Nate Hodell

CFI/CFII/MEI/ATP - Creator of wifiCFI - Owner of Axiom Aviation Flight School.


This information is included in the Weather Reports Lessons on wifiCFI. Sign up today to watch videos, listen to podcasts, take lesson quizzes, join live webinars, print lesson quicktakes, and more by clicking this link >


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