JX106 - METARs and TAFs Flashcards
What is the purpose of a METAR?
Provide rapid and efficient means of transmitting latest observed weather to meteorologists and aircrew
What does METAR stand for?
Aviation Routine Weather Reports
What is a SPECI? When is it issued?
Special unscheduled observation
Issued when critical elements change
What does a COR modifier stand for?
Corrected Report
What does VRB in the wind section of a METAR stand for?
Undetermined wind direction
What is the definition of Prevailing Visibility?
Greatest visibility observed over 50% of horizon in statute miles
Runway Visual Range is included in a METAR when prevailing visibility less than or equal to ___ SM or RVR is less than or equal to _____ feet
1 SM
6000 Feet
What is the required minimum cloud coverage to be considered a ceiling?
Broken (BKN)
What is RADAT 80052 inside a METAR?
First two digits are humidity (80%)
Last 3 digits are altitude (052 = 5200 feet)
Is RCR (Runway Condition Report) found in METARs or TAFs?
METARs only
On a METAR, if the term BLSN does NOT have a “-“ or “+” in front of it, what is the severity of the condition?
MODERATE
Blowing Snow
What does CAVOK in a TAF stand for?
Ceiling And Visibility OK
What does 651206 in a TAF stand for?
Use pamphlet:
6 Code identifier (icing)
5 intensity (moderate)
120 base layer in hundreds of feet (12000)
6 thickness of layer in thousands of feet (6000)
What does a FM indicate in a TAF?
From
Indicates a rapid change
What is a BECMG in a TAF?
Becoming
Gradual change in predominant conditions
What is a TEMPO in a TAF?
Temporary condition
Expires end of period listed
Reverts to previous line
What does IR18 in a METAR stand for?
Ice on the runway, runway condition reading 18
