Contents
- 1 What does AO2 mean in a Metar?
- 2 What does RMK AO2 mean?
- 3 How do you read an aviation Metar?
- 4 What does the sign mean on a Metar?
- 5 What does 9999 mean in a TAF?
- 6 How long is a TAF valid for?
- 7 What are the different types of METARs?
- 8 What is a TAF in aviation?
- 9 What does Cavok mean?
- 10 What is the weather symbol for dust?
- 11 Are Metar clouds AGL or MSL?
What does AO2 mean in a Metar?
AO2. automated station with precipitation discriminator.
What does RMK AO2 mean?
A simply stands for Altimeter. 3016 means 30.16 inches of mercury for the pressure. RMK AO2 -REMARKS. RMK simply means REMARKS and marks the end of the standard metar observation and the beginning of the remarks that are put in as necessay. A02 means that the site is automated and HAS a precipitation sensor.
How do you read an aviation Metar?
The first two digits are the date, the 16th of the month, and the last four digits are the time of the METAR, which is always given in coordinated universal time (UTC), otherwise known as Zulu time. A “Z” is appended to the end of the time to denote that the time is given in Zulu time (UTC) as opposed to local time.
What does the sign mean on a Metar?
A maintenance indicator sign, $, is included when an ASOS/AWSS (Automated Surface Observing System / Automated Weather Sensor System) detects that maintenance is needed on the system.
What does 9999 mean in a TAF?
9999. This value represents a visibility greater than 9000. meters (7 SM or more). The contraction CAVOK (ceiling and visibility OK) may be used when there is no significant weather, the visibility is 10 km or greater, and the ceilings are greater than 5,000 ft.
How long is a TAF valid for?
Routine TAFs are valid for a 24-hour period and issued four times daily: 00Z, 06Z, 12Z, and 18Z, and are amended (updated) as conditions require.
What are the different types of METARs?
There are four types of weather observations: surface, upper air, radar, and satellite. Surface aviation weather observations ( METARs ) are a compilation of elements of the current weather at individual ground stations across the United States.
What is a TAF in aviation?
The Terminal Area Forecast ( TAF ) is the official FAA forecast of aviation activity for U.S. airports. It contains active airports in the National Plan of Integrated Airport Systems ( NPIAS ) including FAA-towered airports, Federal contract-towered airports, non-federal towered airports, and non-towered airports.
What does Cavok mean?
The Visibility, Cloud, and Weather groups are replaced by the term CAVOK (cloud and visibility OK) when the following conditions exist simultaneously: Visibility is 10km or more. No CB or TCU and no cloud below 5000 feet or Minimum Sector Altitude (MSA) (whichever is the greater).
What is the weather symbol for dust?
N O A A N A T I O N A L W E A T H E R S E R V I C E
| METAR Code | Description |
|---|---|
| PO | Dust devil |
| VCSS | Vicinity sand storm |
| Fog or special weather | |
| BR | Mist or light fog |
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Are Metar clouds AGL or MSL?
Cloud Height: Height is important, especially in the mountains. Remember, METAR and TAF report the height of clouds AGL, not MSL.