AIM 8/15/19  7/16/20  EXAMPLE − EXAMPLE − EXAMPLE − EXAMPLE − EXAMPLE − EXAMPLE − 2. Visibility. 4. Ceiling and Sky Cover. EXAMPLE − 7 − 1 − 25 Meteorology (c) If an automated parameter is “missing” and no manual input for that parameter is available, the parameter is announced as “MISSING.” For example, a report with the dew point “missing” and (a) Ceiling is announced as either “CEIL- ING” or “INDEFINITE CEILING.” With the exception of indefinite ceilings, all automated ceiling heights are measured. “Remarks... density altitude, two thousand five hundred ... visibility variable between one and two ... wind direction variable between two four zero and three one zero ...observed weather ... thunderstorm moderate rain showers and fog ... thunderstorm overhead.” 3. Weather. In the future, some AWOSs are to be configured to determine the occurrence of precipitation. However, the type and intensity may not always be determined. In these systems, the word “PRECIPITATION” will be announced if precipita- tion is occurring, but the type and intensity are not determined. (3) Obstructions to vision when the visibili- ty is 3 miles or less. (2) Thunderstorms and direction; and (1) Type and intensity of precipitation. (b) Manual Input Remarks. Manual input remarks are prefaced with the phrase “OBSERVER WEATHER.” As a general rule the manual remarks are limited to: (b) A sensor for determining visibility is not included in some AWOS. In these systems, visibility is not announced. “VISIBILITY MISSING” is announced only if the system is configured with a visibility sensor and visibility information is not available. (a) Automated “Remarks.” (a) The lowest reportable visibility value in AWOS is “less than $^{1}$/$_{4}$.” It is announced as “VISIBILITY LESS THAN ONE QUARTER.” 5. Remarks. If remarks are included in the observation, the word “REMARKS” is announced following the altimeter setting. “Bremerton National Airport automated weather observ- ing system temporarily inoperative.” (d) The phrase “TEMPORARILY INOPER- ATIVE” is added when the system is inoperative. “BremertonNational Airport automated weather observa- tion test, one four five six zulu.” (c) A sensor for determining ceiling and sky cover is not included in some AWOS. In these systems, ceiling and sky cover are not announced. “SKY CONDITION MISSING” is announced only if the system is configured with a ceilometer and the ceiling and sky cover information is not available. “No clouds below one two thousand.” “Clear below one two thousand.” (c) The word “TEST” is added following “OBSERVATION” when the system is not in commissioned status. “Sault  Ste. Marie, Chippewa County International Airport automated weather observation;” “Sandusky, Cowley Field automated weather observa- tion.” (b) The word “Clear” is not used in AWOS due to limitations in the height ranges of the sensors. No clouds detected is announced as “NO CLOUDS BELOW XXX” or, in newer systems as “CLEAR BELOW XXX” (where XXX is the range limit of the sensor). “BremertonNational Airport automated weather observa- tion, one four five six zulu. Indefinite ceiling two hundred, sky obscured.” “BremertonNational Airport automated weather observa- tion, one four five six zulu. Ceiling two thousand overcast;” (b) If the airport’s specific location is not included in the airport’s name, the location is announced followed by the airport’s name. “RavenswoodJackson County Airport automated weather observation, one four five six zulu.” “BremertonNational Airport automated weather observa- tion, one four five six zulu;” (1) Density Altitude. (2) Variable Visibility. (3) Variable Wind Direction.