METAR Weather Flashcards
1
Q
What is the standard altimeter value in QNH and inches of mercury?
A
1013 hPa / 29.92 inches Hg
2
Q
How many feet equals 1 hPa
A
27ft or rounded off to 30 ft
3
Q
When QNH is greater than 1013, pressure altitude is higher or lower?
A
Lower
4
Q
Formula to compute for difference in height based on QNH
A
- (1013 - actual QNH) = A
- A x 30ft = B
- B + or - pressure height = final height
(if QNH is greater than 1013, subtract, else if lower, add to pressure height)
5
Q
METAR vs TAF
A
METAR: every hour
TAF: valid for 24 - 30 hours and typically issued 4 times a day (every 6 hours)
6
Q
What does METAR mean?
A
Meteorological Aerodrome Reports
7
Q
What does TAF mean?
A
Terminal Area Forecast
8
Q
BR
A
Mist or light fog
9
Q
PRFG
A
Fog, sky discernable
10
Q
FG
A
Fog
11
Q
MIFG
A
More or less continuous shallow fog
12
Q
HZ
A
Haze
13
Q
SH
A
Showers
14
Q
RA
A
Rain
15
Q
-DZ
A
Light drizzle
16
Q
DZ
A
Moderate drizzle
17
Q
LT
A
Light
17
Q
SQ
A
Squalls
17
Q
+DZ
A
Heavy drizzle
18
Q
SN
A
Snow
