What does 9999 mean in TAF?

Joe Ford

What does 9999 mean in 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.

What does RA mean in a Metar?

-RA is the METAR code for light rain. LOCIGS is low ceilings, and TSTMS is thunderstorms.* * Air Traffic Management Glossary of Terms (faa.gov). https://aviation.stackexchange.com/questions/51654/what-does-ra-mean-in-the-faa-terminal-constraints/51656#51656.

What does P mean in Metar?

P. indicates greater than the highest reportable value. PCPN. precipitation. PL.

How long is a Metar valid?

How long is a TAF valid or updated? METAR is used to tell the actual meteorological conditions on a station, airport or area indicating day/time wind, clouds, precipitations, altimeter pressure and temperature, it has a duration of 60 minutes and it is updated every hour.

What is the difference between SKC and CLR?

Clear skies shall be coded in the format, SKC or CLR, where SKC is the abbreviation used by manual stations to indicate no layers are present and CLR is the abbreviation used by automated stations to indicate no layers are detectedd at or below 12,000 feet.

Is Metar AGL or MSL?

Ground stations report AGL; pilots report MSL (what they see on their altimeter). So, METARs and TAFs are AGL, while UAs are MSL.

What does Cavok mean?

CAVOK is an abbreviation for Ceiling And Visibility OK, indicating no cloud below 5,000 ft (1,500 m) or the highest minimum sector altitude and no cumulonimbus or towering cumulus at any level, a visibility of 10 km (6 mi) or more and no significant weather change.

How long is a Metar valid for?

Validity: Issued every hour, usually 55~59 past the hour. Data may be up to 15 minutes old, should not be older. Valid for 1 hour or until the next released report.

What does Shra mean on a TAF?

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.