Afman 15 111
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When Automated the ASOS/AMOS will continually sense what wx parameters:
Wind, Vis, Precipitation/Obstruction, Cloud height, Sky cover, Temp, Dewpoint, altimeter, and lightning
What does FLIP stand for?
Flight Information Publication (AFI 11-201)
who certifies ATC personal to evaluate prevail. vis values form control tower and on what form?
Weather Technicians/ AF 3622 - Air Traffic Control/ Weather Certification and Rating Record.
Units responsible for sfc wx obs will ensure their station info is current and maintained on permanent file at what squadron?
14th Weather Squadron
METARS
routine scheduled observation as well as the primary observation code used by the United States to satisfy requirements for reporting surface meteorological data.
METAR file times between:
H+55 to H+59 minutes past the hour
METAR observations taken at 0000, 0600, 1200, 1800 UTC include additional info and are known as:
6-Hourly observations
METAR observations taken at 0300,0600,0900,1500, and 2100 UTC contain additional information and are known as:
3-Hourly observations
SPECI
is an unscheduled observation completed and transmitted when any of the special criteria is observed or sensed.
When is a SPECI reported?
The time ascribed to a SPECI reflects the time, to the nearest minute, that the SPECI criteria are first met or observed.
LOCAL?
Aviation Selected Local Weather Report
When is a LOCAL taken?
it is an unscheduled observation, reported to the nearest minute, not meeting SPECI criteria. LOCALS are taken when leadership determines there is a req. in support of local operations of OPSEC considerations.
Istallation SPECI requirements?
At all EUs, the local ceiling, prevailing visibility, and runway visual range landing and circling minima will be SPECI observations generated by the AMOS or the weather technician; airfield minima
Magnetic Variation?
The local magnetic variation must be determined at each observing location to convert wind direction from magnetic to true.
from Magnetic to True:
(1) add easterly variation to magnetic direction, and (2) subtract westerly variation from magnetic direction. by 010 degrees
from True to Magnetic:
(1) add westerly variation to true direction, and (2) subtract easterly variation from true direction. by 010 degrees
Unofficial Weather Reports:
a report of one or more weather elements from an individual who is not task certified to take official weather observations. (i.e. a pilot or law enforcement official)
Why are Unofficial Weather Reports Important?
Unofficial reports can provide additional and supplemental information that may be important to local aviation and public safety. It can also help increase the weather technician's situational awareness.
Point of observation:
the observing location; locations where the various elements of the observation are evaluated.
At a large modern Airfield the points of Observation are:
The location of the primary sensor group and the discontinuity sensor group./the weather observing location; or it may be the touchdown area of the primary runway. The selected location must provide consistent visually determined values./The center of the runway complex.
Control Tower Visibility Aids:
ATC regulations require control towers to maintain a visibility checkpoint chart or list of visibility markers posted in the tower.
Upon notification of an Aircraft Mishap, EUs will:
Collect and save data related to an aircraft mishap according to instructions in AFMAN 15-129, Volume 2, Air Force Weather Operations - Exploitation. Technicians will retrieve the archived surface observation data as required by the requesting agency.
RVRNO
If the RVR equipment is inoperative and visibility is equal to or less than 1 mile (1600 meters)((Do not use the alternate end RVR.))
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