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Block 4 > Lesson 24 > Flashcards

Lesson 24 Flashcards

(54 cards)

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1
Q

Aviation Routine Weather Report (METAR)

A
  • reporting surface meteorological data

- scheduled reports transmitted at fixed intervals (at least once per hour)

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2
Q

Aviation Selected Special Weather Report (SPECI)

A
  • an unscheduled report taken when certain criteria have been observed
  • criteria denote weather changes important to aircraft safety
  • only applicable to stations which have the capability of evaluating the event
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3
Q

Announce the word “missing” when any item or component of a weather report is not reported, with the exception of what 4 items?

A
  • report modifier
  • runway visual range
  • present weather group
  • remarks
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4
Q

____ is coded if the wind direction is variable and the speed is 6 knots or less.

A

VRB

-example: VRB04KT “Wind Variable at Four”

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5
Q

00000KT means?

A

wind calm

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6
Q

“V” indicates what if used in the wind section?

A

wind direction is variable and the speed is greater than 6 knots
-example: 180V250 “wind variable between one eight zero and two five zero”

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7
Q

Prevailing Visibility

A

visibility considered representative of conditions at the station; the greatest distance that can be seen throughout at least half the horizon circle (180 degrees) not necessarily continuous

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8
Q

What is the lowest and highest visibility that can be reported by an automated station?

A

Lowest: M1/4SM “visibility less than one quarter”
Highest: 10SM “visibility one zero”

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9
Q

What is the lowest and highest visibility that can be reported by an automated station?

A

Lowest: M1/4SM “visibility less than one quarter”
Highest: 10SM “visibility one zero”

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10
Q

Runway Visual Range (RVR)

A

an instrumentally derived value, based on standard calibrations, that represent the horizontal distance a pilot may see down the runway from the approach end
-Example: R35R/P6000FT “Runway three five right visual range more than six thousand”

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11
Q

VC “vicinity”

A

indicates weather phenomena between 5 and 10 statute miles from the point of observation

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12
Q

Identify the descriptors below:

  • MI
  • PR
  • BC
  • DR
  • BL
  • SH
  • TS
  • FZ
A
  • MI= Shallow
  • PR= Partial
  • BC= Patches
  • DR= Low Drifting
  • BL= Blowing
  • SH= Showers
  • TS= Thunderstorms
  • FZ= Freezing
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13
Q

DZ

A

Drizzle

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14
Q

RA

A

Rain

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15
Q

SN

A

Snow

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16
Q

SG

A

Snow Grains

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17
Q

IC

A

Ice Crystals

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18
Q

PL

A

Ice Pellets

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19
Q

GR

A

Hail

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20
Q

GS

A

Small Hail and/or Snow Pellets

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21
Q

UP

A

Unknown Precipitation

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24
Q

FU

25
VA
Volcanic Ash
26
DU
Widespread Dust
27
SA
Sand
28
HZ
Haze
29
PY
Spray
30
PO
Well Developed dust/sand whirls
31
SQ
Squalls
32
FC
Funnel Cloud, Tornado, Water Spout
33
SS
Sandstorm
34
DS
Duststorm
35
DS
Duststorm
36
VV
vertical visibility; 8/8; indefinite ceiling | -Example: VV005 "Indefinite Ceiling five hundred"
37
SKC
Clear; 0; used at manual stations when no layers reported; "Clear"
38
CLR
clear; 0; used by automated stations to indicate no layers are detected at or below 12,000 ft above the surface -"Clear below one two thousand"
39
FEW
few; 1/8 - 2/8 - No Remarks: "Few Clouds at less than five zero" - Remarks: "Sky Partially Obscured"
40
SCT
scattered; 3/8-4/8 - No Remarks: "Less than five zero scattered" - Remarks: "Sky Partially Obscured"
41
BKN
broken; 5/8-7/8 | - if first BKN or OVC, precede with "Ceiling" ##### "Broken"
42
BKN
broken; 5/8-7/8 | - if first BKN or OVC, precede with "Ceiling" ##### "Broken"
43
OVC
overcast; 8/8 | -if first BKN or OVC, precede with "Ceiling" ##### "Broken"
44
DSNT
indicates weather phenomena beyond 10 SM of the points of observation
45
DSNT
indicates weather phenomena beyond 10 SM of the points of observation
46
OCNL
occasional lightning; less than 1 flash/minute
47
FRQ
frequent lightning; about 1 to 6 flashes/minute
48
CONS
continuous lightning; more than 6 flashes/minute
49
SNINCR 1/4
"Snow increase one inch during the past hour, four inches on the ground"
50
Identify the descriptors below: - MI - PR - BC - DR - BL - SH - TS - FZ
- MI= Shallow - PR= Partial - BC= Patches - DR= Low Drifting (height of less than 6 ft above the ground) - BL= Blowing (raised to a height of 6ft or more above the ground) - SH= Showers - TS= Thunderstorms - FZ= Freezing
51
RA
Rain (drops larger than 0.02 inch)
52
PL
Ice Pellets (diameter of 0.2 inch or less)
53
BR
Mist (reduces visibility to less than 7 SM but greater than or equal to 5/8 SM)
54
SQ
Squalls (sudden onset of wind speed increases at least 16 knots and is sustained at 22 knots or more for at least one minute)

Block 4 (5 decks)

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