UAS Weather Flashcards
1
Q
What is a METARS
A
Routine Surface Observation or Aviation Routine Weather Report
2
Q
First set of Characters are
A
Airport
3
Q
Second set of Characters are
A
Date and Time, 1st two #s are date
4
Q
Third set of characters are
A
Wind (1st three #s are degrees for wind direction, next set of numbers are the wind in knots (KT)
5
Q
Fourth set of characters are
A
visibility in statute miles
6
Q
Fifth set of characters are
A
how many clouds (ovc, bkn, sct, few, clr) at how many feet (019=1900)
7
Q
Sixth set of characters are
A
1st #-degrees in Celcius, 2nd #-dew point
8
Q
Seventh set of characters are
A
altimeter
9
Q
What is TAFS?
A
Terminal Aerodrome Forecast
10
Q
-
A
Light Moderate
11
Q
+
A
Heavy
12
Q
VC
A
In the Vicinity
13
Q
MI
A
Shallow
14
Q
PR
A
Partial
15
Q
BC
A
Patches
16
Q
DR
A
Low Drifting
17
Q
BL
A
Blowing
18
Q
SH
A
Showers
19
Q
TS
A
Thunderstorms
20
Q
FZ
A
Freezing
21
Q
DZ
A
Drizzle
22
Q
RA
A
Rain
23
Q
SN
A
Snow
24
Q
SG
A
Snow Grains
25
IC
Ice Crystals
26
PL
Ice Pellets
27
GR
Hail
28
GS
Small Hail and/or Snow Pellets
29
UP
Unknown Precipitation
30
BR
Mist
31
FG
Fog
32
FU
Smoke
33
VA
Volcanic Ash
34
DU
Widespread Dust
35
SA
Sand
36
HZ
Haze
37
PY
Spray
38
PO
Well-Developed Dust/Sand Whirls
39
SQ
Squalls
40
FC
Funnel Cloud Tornado Waterspout
41
SS
Sandstorm
42
DS
Duststorm
43
What is HEMS Tool?
Helicopter Emergency Medical Services Tool
44
What is a TFR?
Temporary Flight Restriction
45
What is a NOTAM?
Notice to Airman
46
What are the 3 types of Briefs?
Standard, Abbreviated, Outlook
47
Which Brief is most complete?
Standard
48
Which Brief verifies information you already have?
Abbreviated
49
Which Brief shows you the forecast in the future?
Outlook
50
Stable Air Characteristics
Stratiform Clouds (thin, low lying clouds);Fair to Poor Visibility; Continuous Precipitation
51
Unstable Air Characteristics
Cumulus Clouds(puffy clouds); good visibility; showery precipitation (nothing consistent)
52
Stratiform Clouds are
thin, low lying clouds
53
Cumulus Clouds are
puffy clouds
54
Surface Friction
“Wind and currents can affect suas performance and maneuverability during all phases of flight. Be vigilant when operating suas at low altitudes, in confined areas, near buildings or other manmade structures, and near natural obstructions (such as mountains, bluffs or canyons).”
55
When do clouds form?
Temp and Dew Point get closer together in number resulting in visible moisture (Fog)
56
Radiation (fog type)
heat radiates from the surface at night; prefers no wind, if you get a breeze it will go away
57
Advection (fog type)
requires cooler surface and some moisture (body of water); a little wind is needed
58
Upslope Fog
Moist air flows toward the slope, as air rises with the terrain, it cools to condensation temp and fog forms on slope
59
Precipitation Induced Fog/Steam Fog
Rain that hits a hot parking lot and causes steam
60
Types of low clouds
Stratus, cumulus, nimbostratus, cumulonimbus
61
Height for Low Clouds
6,500 ft and below
62
Types of Mid Clouds
Altocumulus, altostratus
63
Height for Mid Clouds
Above 6,500 ft to 23,000 ft
64
Types of High Clouds
Cirrus, clouds with extensive vertical development, towering cumulonimbus
65
Height for High Clouds
Above 23,000 ft
66
Where do standing lenticulars form?
Over Mountains
67
What shape are standing lenticulars?
Almond Shape
68
What kind of weather is associated with standing lenticulars?
Very Bad
69
What is a ceiling (layer)?
lowest, broken or overcast layer
70
True vs Magnetic Winds
If you read it, its true. If you hear it, its magnetic.
71
When will clouds or fog form?
When water vapor condenses
72
What kind of air would you expect over a barren area on a hot day?
Thunderstorms
73
When are METARS issued?
+55 past the hour
74
How long are METARS valid for?
Hourly
