Proficiency Flashcards
Which change in sky condition does NOT require a SPECI?
A. From SCT008 to SKC
B. From BKN013 to BKN006
C. From OVC009 to OVC010
D. From SKC to clouds observed at 800ft
From SCT008 to SKC
The time transmitted in the body of an observation used to correct a previously disseminated report is ______.
A. The actual time the error was discovered.
B. The actual time the correction was transmitted.
C. The standard time of the erroneous observation.
D. The original time of the report being corrected.
The standard time of the erroneous observation
Peak wind is reported when its value is greater than:
A. 10 knots
B. 25 miles per hour
C. 25 knots
D. 50 knots
25 knots
A layer of 2/8 clouds at 1500FT with another layer of 4/8 clouds at 6900FT will be reported as _____.
A. SCT015 BKN069
B. FEW015 SCT069
C. FEW015 BKN070
D. FEW015 SCT065
FEW015 BKN070
When the sky is totally hidden by surface-based obscuring phenomena, the appropriate sky cover contraction is ____.
A. OVC
B. VV
C. UNK
D. SKC
VV
Which of the following is encoded correctly?
A. TSRAGS
B. +SN-FZRA
C. -FZIP
D. TS+SN-RA
TSRAGS
***No more than 3 present weather groups
Which of the following would NOT be considered a ceiling?
A. Vertical visibility into precipitation that hides 8/8 of the sky.
B. An obscuring phenomena aloft that hides 6/8 of the sky.
C. A haze layer aloft that hides 5/8 of the sky.
D. A surface based layer of fog that covers 7/8 of the sky.
A haze layer aloft that hides 5/8 of the sky
A SPECI is required when ____.
A. Visibility increases from 4 to 5 miles.
B. An in-flight emergency occurs.
C. The ceiling decreases from 1000FT to less than 500FT.
D. The ceiling increases from 3000FT to 5000FT.
The ceiling decreases from 1000FT to less than 500FT
A SPECI observation is always required when ____.
A. The ceiling decreases to equal 500FT.
B. The visibility decreases to equal 1/2 mile.
C. An aircraft MISHAP occurs.
D. If requested by a senior aviator.
An aircraft MISHAP occurs
Ceiling heights of stratus clouds may NOT be estimated by _____.
A. A ceilometer.
B. A PIREP with heights converted from MSL to AGL.
C. Convective cloud-base height diagram.
D. Known heights of unobscured landmarks in contact with the ceiling base.
Convective cloud-base height diagram
Variable visibility is reported whenever the prevailing visibility rapidly increases or decreases by ______.
A. 2 miles
B. 1/2 mile and is less than 6 miles
C. 1 mile
D. 1/2 mile and is less than 3 miles
1/2 mile and is less than 3 miles
Which type of light may be used as a visibility marker at night?
A. Aircraft lights
B. Automobile headlights
C. Obstruction lights (i.e., tower, power lines, wind sock, etc.)
D. Focused lights
Obstruction lights (i.e., tower, power lines, wind sock, etc.)
Blowing dust reduces the visibility to 4 miles except to the south where it is 1 mile. When taking manual observations, the correct 3140/12 column 14 remark is ____.
A. VIS 4S1
B. VIS S 1
C. VIS N4E4S1W4
D. No remark required
VIS S 1
Which of the following is used to designate hail?
A. A
B. HA
C. GR
D. HL
GR
How would you encode an average wind speed of 25kt that was varying rapidly between 20 and 30kt?
A. 20G30
B. 25G30
C. 25 and Remark WND20G30
D. 25
25 and Remark WND20G30
What is the contraction for snow showers?
A. SS
B. SW
C. SHSN
D. SNSH
SHSN
When the prevailing visibility is exactly halfway between 2 reportable values, you should enter the _____.
A. Lower value
B. Higher value
C. Even value
D. Odd value
Lower value
An estimated wind direction of 270 would be encoded in 3140/12 column 3 as ____.
A. M
B. Leave column blank
C. 270
D. E270
E270
The observed temperature is 2.4C. When taking manual observations, how would you encode this in 3140/12 Column 11?
A. 2.4
B. 02
C. 03
D. 2
02
A SPECI is required when visibility of ___.
A. 1 1/4 becomes 2 1/2
B. 2 2/3 becomes 2 5/8
C. 2 becomes 2 5/16
D. 3 becomes 4
1 1/4 becomes 2 1/2
Which of the following is a reportable visibility value?
A. 0
B. 2 5/16
C. 16
D. 96
0
To encode a gust, the difference between peaks and lulls must be at least ____kt.
A. 20
B. 15
C. 10
D. 5
10
In order to enter augmentation data into the OID screen, the observer must be signed in. If no observer is signed into the ASOS system, what indication will be contained in the body of the observation?
A. “A” at the beginning of the observation
B. “A” at the end of the observation
C. “AUTO” at the beginning of the observation
D. “AUTO” at the end of the observation
“AUTO” at the beginning of the observation
Small hail or snow pellet are reported in present weather as ____.
A. SN
B. SG
C. GS
D. PL
GS
There are four main types of lightning that can be distinguished in Remarks. They are ____.
A. CG, CC, CV, CS
B. CG, CC, IC, CD
C. CG, CC, IC, CA
D. CG, CF, CN, CC
CG, CC, IC, CA
Sky cover is classified using the summation principle and expressed in ____.
A. fourths
B. sixths
C. eighths
D. tenths
eighths
The CL31 ceilometer used by ASOS can accurately measure cloud bases up to ____.
A. 8000FT
B. 10,000FT
C. 12,000FT
D. 25,000FT
12,000FT
Cloud base heights greater than 5000FT up to and including 10,000FT are reported to the nearest _____.
A. 100FT
B. 200FT
C. 500FT
D. 1,000FT
500FT
The contraction “FIBI” means ____.
A. Indefinite fog base
B. Filed but Impractical to Transmit
C. First observation of the day after the field re-opened
D. Long-line dissemination interrupted
Filed but Impractical to Transmit
When taking manual observations, calm winds are recorded in 3140/12 column 4 (wind speed) as ____.
A. CA
B. 0
C. 00
D. M
00
A thunderstorm just passed over the station and you notice that there is some large hail on the ground. You would do the following ____.
A. Nothing, hail is assumed to occur in thunderstorms.
B. Measure the largest hail radius to the nearest 1/4 inch and report it in Remarks on the next observation.
C. Measure the largest hail diameter to the nearest 1/4 inch and report it in Remarks on the next observation.
D. Measure the average hail diameter to the nearest 1/4 inch and report it in Remarks on the next observation.
Measure the largest hail diameter to the nearest 1/4 inch and report it in Remarks on the next observation.
FMH No 1 standards apply to which Federal Agency (ies)?
A. NWS only
B. DOD only
C. FAA only
D. All Federal agencies
All federal agencies
ATC is required to report all changes to tower visibility of one or more reportable values to the weather unit when the prevailing visibility at the tower or the surface is less than:
A. 7SM
B. 4SM
C. 3SM
D. 1SM
4SM
A SPECI is required for all the following except:
A. Tornado is observed
B. Thunderstorm begins
C. Hail begins
D. Rain changes intensity
Rain changes intensity
***A SPECI is required for this ONLY if it changes the visibility
A cloud layer forms at 2,000 feet. Is a SPECI required?
A. Yes
B. No
No
*** Has to be reported below 1,000 feet for a SPECI to be required.
Variable ceilings are only evaluated when the ceiling is less than 3,000 feet.
A. True
B. False
True
A temperature value of 1.5 would be encoded in a METAR report as ____.
A. 01
B. 02
C. M01
D. M02
02
You have a partial obscuration covering 5/8 of the sky and 2/8 of cumulus visible at 3,000 feet and 1/8 of Altocumulus at 12,000 feet. What is the ceiling?
A. Surface
B. 3,000 feet
C. 12,000 feet
D. None of the above
Surface
Which is not criteria for a SPECI
A. Volcanic ash
B. Volcanic Eruption
C. Hail
D. Runway condition other than dry
Runway condition other than dry
Which of the following are normally associated with a wind shift?
A. Gusty winds shifting in a clockwise manner in the northern hemisphere.
B. Rapid drop in Dew Point.
C. Rapid rise in pressure.
D. All of the above.
All of the above
Visibility shall be reported in:
A. Statute Miles (SM)
B. Nautical Miles (NM)
C. Meters (M)
D. Kilometers (KM)
Statute Miles (SM)
What is the maximum number of present weather groups a METAR may contain?
A. 1
B. 2
C. 3
D. 4
3
Which lightning remark is correct?
A. OCNL LTGIC OHD
B. OCNL LTGIC VC
C. OCNL LTGIC DSNT NE
D. All the above
All the above
Ice formed on exposed surfaces by freezing rain or freezing drizzle is known as:
A. glaze
B. frost
C. rime
D. ice pellets
glaze
The primary instruction used to encode and transmit pilot reported weather conditions (PIREPS) is:
A. NAVMETOCCEN INST 3141.2A
B. NAVMETOCCEN INST 3142.1
C. FAA INST 7900.5B
D. CNMOC INST 1500.2
NAVMETOCCEN 3142.1
You are acting as observer only and receive a request to update and expend a DD175-1 Flight Weather Brief from a U.S. Navy pilot in her aircraft on the active runway. You shall ____.
A. If the weather is VFR, go ahead and extend the brief.
B. Tell the pilot sorry, we don’t do weather briefs here anymore.
C. Input the request into the FWB program.
D. Relay the request to FWC in accordance with local SOP.
Relay the request to FWC in accordance with local SOP.
The FWC Aviation Duty Officer must be notified when _____.
A. An aircraft mishap occurs at the airfield.
B. A severe thunderstorm damages several buildings on base.
C. A tornado is sighted on base.
D. All of the above.
All of the above.
Which sensor status indicator is automatically appended in remarks of an observation when the wind sensor fails due to a maintenance need?
A. PWINO B. $ C. PNO D. WINMAINT E. No remark is appended
$
*** NAVMETOCCOMINST 3141.2A, Pg 13-19, Para 13.6.5
You determine visibility to be N3, E4, S5, W6. You also determine visibility is 2 SM in the extreme SSW quadrant. What is the correct prevailing and sector visibility for this scenario?
A. 5SM B. 4SM RMK VIS N 3 NNW 2 C. 3SM RMK VIS N-W 2 D. 3SM RMK VIS SSW 2 E. None of the above are correct
5SM
*** NAVMETOCCOMINST 3141.2A, Pg 8-4, Para 8.3.1
The tower reports 3 miles prevailing visibility, you determine it to be 5, what is the prevailing visibility and associated remark (if any)?
A. 3SM RMK TWR VIS 5 B. 5SM RMK SFC VIS 3 C. 3SM RMK SFC VIS 5 D. 5SM RMK TWR VIS 3 E. 5SM RMK VIS 3 TWR
3SM RMK SFC VIS 5
Which statement is FALSE with regards to variable prevailing visibility?
A. Visibility rapidly changes between reportable values during the period of observation.
B. The minimum and maximum visibility values are reported in remarks.
C. Prevailing visibility is the average of all measurements during the observation.
D. Prevailing must be 3 miles or less.
E. There are no false statements in this question.
Prevailing must be 3 miles or less.
*** NAVMETOCCOMINST 3141.2A, Pg 8-1, Para 8.1.5
What is the criteria for severe thunderstorms?
A. Hail 3/4”, 50kt gusts, tornadic activity
B. Hail 1”, 50kt gusts, tornadic activity
C. Hail 3/4”, 45kt gusts, tornadic activity
D. Hail 1”, 45kt gusts, tornadic activity
E. None of the above are correct
Hail 1”, 50kt gusts, tornadic activity
Which statement is TRUE with regards to sector visibility?
A. Must be at least 45 degrees of horizon
B. Must be at least 60 degrees of horizon
C. Prevailing or sector visibility is less than 3 miles
D. Visibility between prevailing and sector must vary by at least 1/2 mile
E. Both A and C
Both A and C
A. Must be at least 45 degrees of horizon
and
C. Prevailing or sector visibility is less than 3 miles
Prevailing visibility rapidly varies between 1SM and 3SM, what is the prevailing visibility and remark?
A. 1SM B. 2SM C. 2SM RMK VIS 1V3 D. 1SM RMK VIS 1V3 E. None of the above are correct
2SM RMK VIS 1V3
What is the recommended location for recording pressure when “backing” up the ASOS?
A. At your primary the point of observation B. Nearest the ASOS as possible C. Nearest the center of the runway D. Inside the tower E. Inside the weather station
Inside the weather station
Wind gusts shall be reported within ____ minutes of the actual time of report.
A. 2 B. 5 C. 10 D. 15 E. 20
10
You receive a call from a squadron asking for the percentage of VFR conditions expected over the upcoming summer months. What is the BEST response?
A. Provide the information so long as you have verified the individual to be a DoD employee.
B. Provide the information, make a proper log entry, and inform the supervisor.
C. Forward the request to FWC.
D. Provide the FNMOC link for requesting CLIMO
E. None of the above
Provide the FNMOC link for requesting CLIMO
With regards to transmitting observations, which is the proper order for getting the observation into the system…i.e., which do you try first and which method is last?
A. ASOS, AFW-WEBS, EDIS, Contact other AST site, FWC
b. ASOS, FWC, AFW-WEBS, Contact other AST site, EDIS
C. FWC, AFW-WEBS,Contact Other AST site, EDIS
D. FWC, Contact Other AST site, ASOS, EDIS, AFW-WEBS
E. None of the above
ASOS, AFW-WEBS, EDIS, Contact other AST site, FWC
If conditions are relatively unchanging, the observers should first evaluate?
A. Pressure B. Indoor elements C. Outdoor elements D. The easiest elements E. The most predominate elements
Outdoor elements
*** NAVMETOCCOMINST 3141.2A, Pg 6-1, Para 6.2
If conditions are relatively unchanging, the observer should lastly evaluate?
A. Pressure B. Indoor elements C. Outdoor elements D. The easiest elements E. The most predominate elements
Pressure
*** NAVMETOCCOMINST 3141.2A, Pg 6-1, Para 6.1
Wind direction and speed are averaged over a period of how many minutes?
A. 1 minute B. 5 minutes C. 10 minutes D. 15 minutes E. None of the above
None of the above
The temperature/dew point is 13.5C and -2.5C, respectively. What is the proper reporting of each?
A. 13/M02 B. 13/M03 C. 14/03 D. 14/M03 E. None of the above
None of the above
Which observation is correct (disregarding the missing T1 SET for Norfolk sites)?
A. METAR KNNN 251756Z VRB04KT 2 1/2SM TSRA BR BKN050CB BKN070 OVC090 17/16 A2991 RMK AO2 TSB46 SLP135 OCNL LTGIC VC N TS N MOV NE P0032 60126 T01720161 10211 20167 51004
B. METAR KNNN 251756Z VRB04KT 2 1/2SM TSRA BR BKN050CB BKN070 OVC090 17/16 A2991 RMK AO2 TSB46 SLP135 TS N MOV NE OCNL LTGIC VC N P0032 60126 T01720161 10211 20167 51004
C. METAR KNNN 251756Z VRB04KT 2 1/2SM TSRA BR BKN050 BKN070 OVC090 17/16 A2991 RMK AO2 TSE46 SLP135 TS N MOV NE FRQ LTGIC N P0032 60126 T01720161 10211 20167 51004
D. METAR KNNN 251756Z VRB04KT 2 1/2SM TSRA BR BKN050CB OVC070 OVC090 17/16 A2991 RMK TSB46 SLP135 OCNL LTGIC VC N TS N MOV NE P0032 60126 T01720161 10211 20167 51004
E. None of the above.
None of the above. Norfolk ICO is KNGU not KNNN! (Reason) Other “A” Next best answer!
Which response is TRUE with regards to the CAC ID?
A. It may be “locked” within office spaces while off duty.
B. Notify your supervisor a minimum of 30 days prior to your CAC expiring.
C. Notify your supervisor within 3 business days of losing your CAC.
D. Never leave the computer unattended while the CAC inserted.
E. Both A and D.
Never leave the computer unattended while the CAC inserted.
You injure your thumb at work but do not believe it to be serious as it is not broken or bleeding. Which is the appropriate action?
A. Continue working B. Notify the site supervisor C. Call 911 D. Call the PM immediately E. Both A and B
Both A and B
A. Continue working
and
B. Notify the site supervisor
If your temp/dew point spread is 4 degrees, which obstruction to vision may be used?
A. BR B. HZ C. BR HZ D. Response A or B E. Responses A, B, or C may be used
Responses A, B, or C may be used
***NAVMETOCCOMINST 3141.2A, Pg 9-14, Para 9.7.2
What is the proper way to record a partial obscuration hiding 4/8ths of the sky, no clouds present, obscuration is due to surface-based smoke?
A. CLR RMK FU SCT B. CLR RMK FU FEW000 C. SCT000 RMK SCT000 FU D. SCT000 RMK FU SCT000 E. None of the above
SCT000 RMK FU SCT000
What is the proper way to record a total obscuration due to fog with vertical visibility of 200 ft.
A. VV002 RMK FG OVC002 B. OVC002 FMK FG OVC002 C. VV002 D. VVV02 E. None of the above
VV002
The CL31 ceilometer used by ASOS can accurately measure cloud bases up to
A. 8000FT
B. 10000FT
C. 12000FT
D. 25000FT
12000FT
The contraction “FIBI” means
A. Indefinite fog base
B. Filed but impractical to transmit
C. First observation of the day after the field re-opened
D. Long-line dissemination interrupted
Filed but impractical to transmit
The location of occasional lightning associated with a thunderstorm is determined to be 15 miles to the north. You would augment ASOS Remarks as
A. LTG VC W
B. DSNT N OCNL LTG
C. OCNL LTG N
D. OCNL LTG DSNT N
OCNL LTG DSNT N
Calm winds are encoded and transmitted by ASOS as
A. CA
B. 0
C. 00
D. M
00
ASOS 1-minute data is displayed on
A. ACU
B. OID
C. VDU
D. DCP
OID
***OID - operator interface device: enters back-up on augmentation into ASOS; keyboard and video screen
VDU = Video Display Unit
Augmentation is the process of adding data to an automated observation that is beyond the sensing capabilities of the system or correcting automated data based on personal observation of the element.
A. True
B. False
True
What is the lowest visibility entry the ASOS can automatically display without augmentation?
A. 1/16
B. 1/8
C. 1/4
D. 1/2
1/4
ASOS reports visibility in
A. Statue miles
B. Nautical miles
C. Meters
D. Kilometers
Statute miles
ASOS measures the visibility to be 1/4 to the NE, 1 to the SE, 1/2 to the SW, and 3/4 to the NW. What is the prevailing visibility that ASOS will report?
A. 1/4
B. 1/2
C. 3/4
D. 1
1
ASOS measures the visibility to be 1/4 to the NE, 1 to the SE, 1/2 to the SW, and 3/4 to the NW. What is the prevailing visibility that ASOS will report?
A. 1/4
B. 1/2
C. 3/4
D. 1
1/4
What is the maximum number of present weather groups ASOS can transmit?
A. 1
B. 2
C. 3
D. 4
3
When signing-off ASOS (fully operational) when the field is closing you must:
A. Remove all manual augmentation and remarks before signing-off
B. Place LAST in the remarks before signing-off
C. Place AUTO in the remarks before signing-off
D. All the above
Remove all manual augmentation and remarks before signing-off
Which lightning remark is a correct augmentation?
A. OCNL LTGIC OHD
B. OCNL LTGIC VC
C. OCNL LTGIC DSNT NE
D. All of the above
All of the above
Which Thunderstorm remark is a correct augmentation?
A. TS SE MOV NW
B. TS OHD MOVMT UNKN
C. TS DSNT NE
D. All of the above
All of the above
Which Thunderstorm remark is a correct augmentation?
A. TS SE MOV NW
B. TS OHD MOVMT UNKN
C. TS DSNT NE
D. All of the above
TS SE MOV NW
ASOS reports peak winds whenever the wind is greater than:
A. 10 knots
B. 25 miles per hour
C. 25 knots
D. 50 knots
25 knots
If the actual visibility falls halfway between two reportable values, the _____ reportable value is transmitted.
A. lower
B. higher
C. average
D. first
lower
If the actual visibility falls halfway between two reportable values, the _____ reportable value is transmitted.
A. lower
B. higher
C. average
D. first
lower
An obstruction is any phenomena which reduces horizontal visibility:
A. to less than 3 miles
B. including precipitation
C. other than precipitation
D. between sunrise and sunset
other than precipitation
***reduces visibility less than 7 miles
When using the “GENOB” function to create a special observation, ASOS uses the current information on the 1-minute screen.
A. True
B. False
True
Except for _____, augmented 1-minute elements revert to automatic after the hourly observation is transmitted.
A. Sky condition
B. Visibility
C. Present Weather
D. Remarks
Remarks
If you want to cancel a pending SPECI, what is the correct procedure?
A. CMD-OBS-XMIT-Y
B. CMD-OBS-CNCL-Y
C. CMD-OBS-CNCL
D. CMD-OBS-EXIT
CMD-OBS-CNCL-Y
Remarks enclosed within parentheses are not transmitted as part of the METAR/SPECI report.
A. True
B. False
True
Which key would you press to “temporarily” disable the current alarm?
A. F9
B. F10
C. F11
D. F12
F11
What is the significance of the * located next to a field on the 1-minute screen?
A. Nothing
B. Indicated field manually augmented
C. Indicates field is about to change
D. Indicated field values have changed
Indicated field manually augmented
FMH No. 1 standards apply to which Federal Agency (ies) ?
All Federal agencies
NWS, DOD, FAA
A SPECI is required when the ceiling ______.
Decreases from 3500 to 2900FT
A thunderstorm with heavy rain showers and 3/4 inch hail is encoded as _____.
+TSRAGR RMK GR 3/4
An altimeter setting estimated from a barometer that is out of calibration is 29.99INS. This element would be _____.
Encoded as E999
A SPECI is required when_____.
Funnel cloud is observed AND RA changes to FZRA
Which sky condition is correct?
A. SKC000
B. BKN15
C. 010OVC
D.OVC015
OVC015
Times encoded on CNMON 3140/12 and transmitted via the AWN are ____.
Universal Coordinated Time (UTC)
Which element can be reported alone as “single element” SPECI?
Tornado AND Volcanic eruption
***Both are correct ONLY if sending it out longline and not through ASOS
METAR observations shall NOT be started more than ____ minutes before the transmission time.
15
Which of the following is a correct entry as Remarks on 3140/12?
A. WND 30V35
B. VVFG10
C. FG5 BKN000
D. VIS 2V3
VIS 2V3
The average surface wind speed is 18kt and is varying rapidly between 10 and 25kt. This condition would be reported as _____.
18G25
Variable ceilings are only evaluated when the ceiling is less than 3000 feet.
True
Which of the following changes in the character of the wind requires a SPECI?
A. Windshift
B. Gusts over 40kt
C. Sustained hurricane force winds (64kt
Windshift
The prevailing visibility is 3/4 miles and varies rapidly between 1/2 and 2 miles. Encode this as _____.
A. 3/4 and no Remark
B. 3/4 and Remark VIS 1/2V2
C. 1 1/4 and Remark VIS 1/2V2
D. 3/4 and Remark VIS VAR
3/4 and Remark VIS 1/2V2
Surface wind direction is reported in Column 3 of CNMOC 3140/12 in reference to ____.
True north and to the nearest 10 degrees
If the dewpoint temperature is not available, what do you enter in 3140/12 column 12?
M
WSHIFT is reported whenever, within a 15 minute period, the wind direction changes _____ degrees or more and has sustained wind speeds of 10kt or more.
45 degrees
Visibility from 6 equal sectors are: sector 1 = 1; sector 2 = 3; sector 3 = 2; sector 4 = 3; sector 5 = 1; sector 6 = 2 1/2. What is the prevailing visibility?
2 1/2 (?)
Which of the following requires a SPECI?
A. TS ends
B. CIG increases from 2,000ft to 2,500ft
C. FEW008 cloud layer dissipates
D. SG changes intensity
TS ends
The observed temperature is -11.5C. How would the temperature be transmitted?
M11
Which of the following groups contain only authorized reportable visibility values?
A. 1/16, 1 3/16, 100
B. 3/4, 2, 75
C. 0, 3, 16
D. 2 1/4, 2 1/2, 3 3/8
3/4, 2, 75
The ASOS system uses a number of OID screens to display current weather and system data to the user. The primary screen for performing all procedures is _____.
The 1-minute screen
The visibility at the surface is determined to be 3 miles. The ATC personnel in the tower determine the visibility to be only 2 miles and augment the ASOS to report it. What will be the prevailing visibility transmitted in the observation?
2
Mist (BR) is a visible aggregate of minute water particles which are suspended in the atmosphere but are based on the earth’s surface and reduce prevailing visibility from ____.
A. 1/2 up to and including 6 miles
B. 5/8 up to and including 6 miles
C. 1/2 up to and including 3 miles
D. 1/4 up to and including 3 miles
5/8 up to and including 6 miles
Shallow fog is used to describe fog that reduces the visibility below 6ft to 5/8 mile or less but is 7 miles or greater above 6 ft. The descriptor for shallow fog is
MI (MIFG)
The summation of sky cover of a trace through 2/8ths is
FEW
Fog is totally obscuring the sky and has reduced the horizontal visibility to 1/16 mile and the vertical visibility is 200ft. The sky condition would correctly be encoded as _____.
A. OVC002
B. VV002
C. OVC002FG
D. VV002FG
VV002
An altimeter measured as 30.10 inches shall be encoded and transmitted as ____.
A3010
The location of occasional lightning associated with a thunderstorm is determined to be 15 miles to the north. This would be encoded in Remarks as _____.
OCNL LTG DSNT N
Which of the following are not required entries in Remarks?
A. Sea level pressure
B. Standing lenticular or rotor clouds
C. TCU and direction
D. Squall wind speed and direction
TCU and direction
The present weather contraction BCFG describes ____.
Patchy Fog
What instruction prescribes surface weather observation standards and procedures applicable to Navy and Marine Corp activities engaged in observing?
NMOCINST 3141.2A
A SPECI is required for visibility when the surface visibility as reported in the body of the report decreases to less than or if below increases to equal or exceed
3SM
A SPECI is required upon notification of all aircraft mishaps.
True
How often must the designated observing station clock be checked for accuracy?
Once a day
A temperature value of -1.5 would be encoded in a METAR report as
M01
Which word indicates that a procedure or practice is optional
May
Augmentation is the process of adding data to an automated observation that is beyond the sensing capabilities of the system or correcting automated data based on personal observation of the element.
True
Which lightning remark is correct?
A. OCNL LTGIC OHD
B. OCNL LTGIC VC
C. OCNL LTGIC DSNT NE
D. All the above
All the above
Visibility is a measure of the opacity of the atmosphere and is expressed in terms of the horizontal distance at which you are able to see and identify objects.
True
Visibility is 1/4 to the NE, 1 to the SE, 1/2 to the SW and 3/4 to the NW. What is the prevailing visibility.
1/2
You have a partial obscuration covering 5/8 of the sky and 2/8 of cumulus visible at 3000ft and 1/8 of Altocumulus at 12000ft. What is the ceiling.
A. Surface
B. 3000ft
C. 12000ft
D. There is no ceiling
3000ft
The maximum number of reportable sky condition layers in CONUS is?
6
Which thunderstorm remark is correct?
A. TS SE MOV NW
B. TS OHD MOVMT UNKN
C. TS DNST NE
D. All the above
TS SE MOV NW
The intensity of snow occurring alone is determined according to:
A. the degree it affects visibility
B. the rate of accumulation
C. whether it is showery or intermittent
D. the temperature of the dew point
the degree it affects visibility
You notice while monitoring the local radar loop on the internet that a strong line of thunderstorms is approaching the airfield. You know from your pass down that there has not been a weather warning issued for the base. What do you do?
Notify the FWC Aviation Duty Officer of the imminent weather conditions that may require a warning.
The primary instruction used to encode and transmit pilot reported weather conditions (PIREPS) is:
NAVMETOCCEN INST 3142.1
You are acting as observer only and receive a request to update and expend a DD175-1 Flight Weather Brief from a U.S. Navy pilot in her aircraft on the active runway. You shall
Relay the request to FWC in accordance with local SOP
The FWC Aviation Duty Officer must be notified when
A. An aircraft mishap occurs at the airfield
B. A severe thunderstorm damages several building on base
C. A tornado is sighted on base
D. All of the above
All of the above
The time transmitted in the body of an augmented observation used to correct a previously disseminated ASOS report is _____.
The original time of the report being corrected
Which is the correct way to turn on/off auto generated Remarks?
EDIT-REM-SEQN
Which is the correct way to turn on/off auto generated Remarks?
EDIT-REM-SEQN
ASOS must be augmented for _____ because of sensor limitations.
Any weather occurrences not detected by the ASOS sensors
Which change in sky condition does NOT require a SPECI?
A. From SCT008 to SKC
B. From BKN013 to BKN006
C. From OVC009 to OVC010
D. From SKC to clouds observed at 800ft
From SCT008 to SKC
The time transmitted in the body of an observation used to correct a previously disseminated report is ______.
The standard time of the erroneous observation.
Peak wind is reported whenever its value is greater than:
25 knots
A layer of 2/8 clouds at 1500ft with another layer of 4/8 clouds at 6900ft will be reported as
FEW015 BKN070
When the sky is totally hidden by surface-based obscuring phenomena, the appropriate sky cover contraction is _____.
VV
Which of the following is encoded correctly?
A. TSRAGS
B. +SN-FZRA
C. -FZIP
D. TS+SN-RA
TSRAGS
***No more than 3 present weather groups
Which of the following would NOT be considered a ceiling?
A. Vertical visibility into precipitation that hides 8/8 of the sky
B. An obscuring phenomena aloft that hides 6/8 of the sky
C. A haze layer aloft that hides 5/8 of the sky
D. A surface based layer of fog that covers 7/8 of the sky
A haze layer aloft that hides 5/8 of the sky
A SPECI is required when _____.
A. Visibility increases from 4 to 5 miles
B. An in-flight emergency occurs
C. The ceiling decreases from 1000ft to less than 500ft
D. The ceiling increases from 300ft to 5000ft
The ceiling decreases from 1000ft to less than 500ft
A SPECI observation is always required when ____.
A. The ceiling decreases to equal 500ft
B. The visibility decreases to equal 1/2 mile
C. An aircraft MISHAP occurs
D. If requested by a senior aviator
An aircraft MISHAP occurs
Ceiling heights of stratus clouds may NOT be estimated by ______.
A. A ceilometer
B. A PIREP with heights converted from MSL to AGL
C. Convective cloud-base height diagram
D. Known heights of unobscured landmarks in contact with the ceiling base
Convective cloud-base height diagram
Variable visibility is reported whenever the prevailing visibility rapidly increases or decreases by ____.
1/2 mile and is less than 3 miles
Which type of light may be used as a visibility marker at night?
Obstruction lights (i.e. tower, power lines, wind sock, etc)
Blowing dust reduces the visibility to 4 miles except to the south where it is 1 mile. When taking manual observations, the correct 3140/12 Column 14 remark is _____.
A. VIS 4S1
B. VIS S 1
C. VIS N4E4S1W4
D. No remark required
VIS S 1
Which of the following is used to designate hail?
GR
How would you encode an average wind speed of 25kt that was varying rapidly between 20 and 30kts?
25 and Remark WND20G30
What is the contraction for snow showers?
SHSN
When the prevailing visibility is exactly halfway between 2 reportable values, you should enter the _____.
Lower value
An estimated wind direction of 270 would be encoded in 3140/12 Column 3 as _____.
E270
The observed temperature is 2.4C. When taking manual observations, how would you encode this in 3140/12 Column 11?
02
A SPECI is required when visibility of _____.
A. 1 1/4 becomes 2 1/2
B. 2 2/3 becomes 2 5/8
C. 2 becomes 2 5/16
D. 3 becomes 4
1 1/4 becomes 2 1/2
Which of the following is a reportable visibility value?
A. 0
B. 2 5/16
C. 16
D. 96
0
To encode a gust, the difference between peaks and lulls must be at least ____ kt.
10
In order to enter augmentation data into the OID screen, the observer must be signed in. If no observer is signed into the ASOS system, what indication will be contained in the body of the observation?
“AUTO” at the beginning of the observation
Small Hail or Snow Pellet are reported in Present Weather as _____.
GS
There are four main types of lightning that can be distinguished in Remarks. They are _____.
CG, CC, IC, CA
Sky cover is classified using the summation principle and expressed in ____.
eighths
The CL31 ceilometer used by ASOS can accurately measure cloud bases up to ____.
25000FT
Cloud base heights greater than 5000FT up to and including 10,000FT are reported to the nearest _____.
1,000FT
A thunderstorm just passed over the station and you notice that there is some large hail on the ground. You would do the following:
Measure the largest hail diameter to the nearest 1/4 inch and report it in Remarks on the next observation
FMH No 1 standards apply to which Federal Agency (ies)?
All Federal agencies
ATC is required to report all changes to tower visibility of one or more reportable values to the weather unit when the prevailing visibility at the tower or the surface is less than:
4SM
