Table of Contents
What does TX mean on a TAF?
Maximum temperature
TX – Indicator for Maximum temperature. TtTt – Temperature value in Celsius. TN – Indicator for Minimum temperature. HH – Forecast hour, i.e. the time(hour) when the temperature is expected.
What is mos vs TAF?
While TAFs provide the official forecast for 666 airports throughout the US and its territories, MOS provides weather guidance for over 2100 airports including some military air bases.
What are Metars and TAFs?
METAR is the international standard code format for hourly surface weather observations which is analogous to the SA coding currently used in the US. The acronym roughly translates from French as Aviation Routine Weather Report. TAF is the international standard code format for terminal forecasts issued for airports.
What does prob 30 mean?
PROB30 means a slight chance. PROB40 means a medium chance. These are ways for the forecaster to show his/her confidence in this part of the forecast. PROB30 means there is a possibility that warrants a mention, but it probably won’t happen.
What does P mean in TAF?
P. indicates greater than the highest reportable value. PCPN. precipitation.
Is TAF or MOS more accurate?
Pilots should use MOS in a similar way they may use a TAF keeping in mind that TAFs are constructed by highly trained meteorologists and will ordinarily be more accurate than a MOS forecast for the same airport.
How accurate is the TAF?
Technically, a TAF is only valid for the area within a 5 statute mile radius of the airport. Focus on the trend more than the exact times. The TAF says the ceiling will go from 800 feet to 5000 feet at precisely 10am.
Is TAF AGL or ASL?
Heights in METAR and TAF are always stated as height AGL. On the other hand, heights in graphic area forecasts (GFA) and PIREPs are normally stated as height ASL, since terrain heights are variable over the larger area covered.
How long are TAF valid for?
New TAF Format 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 does Becmg mean in TAF?
becoming
In a METAR or TAF report, BECMG means “becoming.” Here’s an example from one of our practice questions: (Refer to Figure 15) In the TAF from KOKC, the clear sky becomes. A) overcast at 2,000 feet during the forecast period between 2200Z and 2400Z.
What is 9999 in a TAF?
The largest reportable metric value is 9999. This value represents a visibility greater than 9000 meters (7 SM or more).