Forecasts and Advisories Flashcards
1
Q
TAF?
A
Terminal Aerodrome Forecast
2
Q
Terminal Aerodrome Forecast? (3 points)
A
- Expected meteorological conditions
- specified time period
- Within 5 SM of an airport
3
Q
SIGMET?
A
Significant Meteorological Information
4
Q
Significant Meteorological Information (2 points)
A
- Weather advisory
2. Concerning weather significant to the safety of all aircraft.
5
Q
Convective SIGMET?
A
- Weather advisory
2. Concerning convective weather significant to the safety of all aircraft.
6
Q
convective weather?
A
- Circular weather motion
- When warmer air or liquid rises
- While cooler air drops down
7
Q
AIRMET?
A
Airman’s Meteorological Information
8
Q
Airman’s Meteorological Information? (3 points)
A
- About weather
- Operational interest to aircraft
- Potentially hazardous to aircraft with limited capabilities
9
Q
CWA?
A
Center Weather Advisory
10
Q
Center Weather Advisory? (5 points)
A
- Unscheduled
- for ATC use
- to alert pilots
- of existing or anticipated adverse weather
- in the next two hours
11
Q
MIS?
A
Meteorological Impact Statement
12
Q
Meteorological Impact Statement? (5 points)
A
- Summarizes weather
- potential impact on
- air traffic flow control
- and flight operations
- center’s area of responsibility
13
Q
FB? (not an acronym)
A
Wind and Temperature Aloft Forecast
14
Q
Wind and Temperature Aloft Forecast?
A
- computer generated forecast
- wind direction, speed, and temperature
- selected times, altitudes, and locations
15
Q
What other weather advisory is a TAF formatted similarly to?
A
A METAR
16
Q
How many times per day is a TAF issued?
A
4 times per day
17
Q
At what times are TAFs issued?
A
- 0000 (midnight)
- 0600
- 1200
- 1800
18
Q
If needed, will Amendments be issued for TAFs?
A
yes
19
Q
For how long is a TAF valid at most airports?
A
24 hours
20
Q
For how long is a TAF valid at airports with significant international traffic?
A
30 hours
21
Q
What 6 things does a TAF include (in order)?
A
- Time period
- Wind
- Visibility
- Significant weather
- Cloud and vertical obscurations
- Non-convective low-level wind shear
22
Q
FM?
A
From
23
Q
“From (FM)” on a TAF meaning?
A
rapid change to new conditions
24
Q
TEMPO on TAF?
A
Temporary Conditions
25
"Temporary Conditions (TEMPO)" on a TAF meaning?
1. temporary change to prevailing conditions
| 2. lists elements forecast to change
26
PROB30?
1. 30% chance (low probability) of
2. a thunderstorm
3. or precipitation
27
PROB40?
1. 40% chance (low probability) of
2. a thunderstorm
3. or precipitation
28
What does a PROB30/40 entry contain?
1. PROB30 (or 40)
2. Valid time
3. Conditions
29
Decode PROB30 1022/1103 1SM TS
1. 30% chance
2. of a thunderstorm
3. within 1 statute mile of the airport
4. day 10, 2200 hours - day 11, 0300 hours
30
What are In-flight advisories used for?
alerting pilots/controllers of hazardous weather
31
What height measurements do in-flight advisories use?
MSL
32
Are SIGMETs scheduled?
No
33
For how long are SIGMETs normally valid?
4 hours
34
For how long are SIGMETs concerning volcanic ash and tropical cyclones valid?
6 hours
35
How often are SIGMETs reissued?
As long as conditions continue
36
How large an area are SIGMETs issued for?
1. 3000 square miles or
| 2. Area of significant operational impact
37
What 5 types of conditions are SIGMETs issued for?
1. Thunderstorms
2. Severe turbulence
3. Severe icing
4. Widespread dust/sand storms
5. Volcanic Ash
38
How often are convective SIGMETs issued?
Hourly
39
For how long are convective SIGMETs valid?
2 hours
40
What types of weather or Convective SIGMETs issued for? (4 points)
1. Severe Thunderstorms
2. Wind 50KT or greater
3. Hail 3/4in in diameter or greater
4. Tornadoes
41
How long a "line" are Convective SIGMETs issued for? And what percentage of thunderstorms must it contain?
1. 60NM long
| 2. 40% containing thunderstorms
42
How wide an area is a Convective SIGMET issued for?
3,000 square miles
43
In order to issue a Convective SIGMET, severe/Embedded thunderstorms expected for ___ min or more.
30
44
Are AIRMET advisories scheduled?
Yes
45
AIRMETs are issued for ____ severe weather than SIGMETs
Less
46
How long are AIRMETs valid for?
Up to 6 hours
47
What are the 3 designators of an AIRMET?
1. Sierra
2. Tango
3. Zulu
48
What are AIRMET Sierras issued for?
1. IFR weather and
| 2. extensive mountain obscuration
49
What are AIRMET Tangos issued for?
1. Moderate turbulence,
2. surface wind less than 30 knots
3. LLWS potential
50
LLWS?
Low-level wind shear
51
What are AIRMET Zulus issued for?
1. moderate icing
| 2. moderate freezing levels
52
In what circumstances is a CWA issued for a thunderstorm(s)? (4 points)
If the thunderstorm is
1. Severe
2. Embedded
3. A line of storms
4. An area of storms
53
What are embedded thunderstorms?
huge, synoptic-scale precipitation area includes a few scattered thunderstorms
54
synoptic-scale precipitation?
Precipitation with major storm systems that extends across areas as large as several Midwestern states.
55
In what circumstances is a CWA issued for icing?
1. If the icing is:
2. Moderate
3. Severe
56
What 2 types of precipitation might generate a CWA?
1. Heavy
| 2. Freezing
57
What IFR ceiling and visibility conditions might generate a CWA?
Ceiling less than 500' AGL and/or
| Visibility less than 1 SM
58
What surface wind speed might generate a CWA?
30 KT
59
Can LLWS generate a CWA?
Yes
60
Can a dust/sand storm generate a CWA?
Yes
61
Can volcanic ash generate a CWA?
yes
62
TMU?
Traffic Management Unit
63
What two organizations use MISs
1. ARTCC
| 2. TMU
64
Are MISs scheduled?
no
65
What time period can MISs be issued for?
Up to 2 days
66
Do pilots use MISs?
No
67
Are CWAs scheduled?
No
68
How long are CWAs valid?
Up to 2 hours
69
At what times are FBs issued?
1. 0000
2. 0600
3. 1200
4. 1800
70
What are the 3 possible times that FBs can be valid until?
1. 7
2. 9
3. 12
