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Key to AWOS Weather Observations

(Automated Weather Observing System)


------------------------------------------------------------------------------------------------------------------------------
| LOCATION IDENTIFIER |     SKY     |            |  TEMPERATURE/DEW POINT/ |        REMARKS: AUTOMATED REMARKS GENERATED     |
|   TYPE OF REPORT    |  CONDITION  |            |  WIND DIRECTION, SPEED  |    AUTOMATICALLY IF CONDITIONS EXIST. AUGMENTED |
|   TIME OF REPORT    | AND CEILING |            |     AND CHARACTER/      | REMARKS ADDED IF CONDITIONS EXIST AND CERTIFIED |
|     STATION TYPE    |BELOW 12,000'| VISIBILITY |   ALTIMETER SETTING/    |    WEATHER OBSERVER IS ATTENDING THE SYSTEM     |
------------------------------------------------------------------------------------------------------------------------------
|  HTM SA 1755 AWOS   |   M20 OVC   |     1V     |   36134/2015G251990/    |       P010/VSBY 1/2V2 WND 17V23/WEA: R-F |
------------------------------------------------------------------------------------------------------------------------------LOCATION IDENTIFIER: 3 or 4 alphanumeric characters
   (usually the airport identifier).

TYPE OF REPORT: SA = Scheduled record (routine) observation.
  All observations identified as SA. Most are transmitted
  at 20-minute intervals (approximately 15, 35 and 55 minutes
  past each hour).

TIME OF REPORT: Coordinated Universal Time (UTC or Z) using
  24-hour clock.

STATION TYPE: AWOS = Automated Weather Observing System site.
  Note: In the future, some systems will use "AO" designators.

SKY CONDITION AND CEILING: Sky condition contractions are
  for each layer in ascending order. Numbers preceding
  contractions are base heights in hundreds of feet above
  ground level (AGL).
    CLR BLO 120 = No clouds below 12,000 ft.
    SCT = Scattered: 0.1 to 0.5 sky cover.
    BKN = Broken: 0.6 to 0.9 sky cover.
    OVC = Overcast: More than 0.9 sky cover.
    X = Obscured sky   -X = Partially obscured
  A letter preceding the height of a base identifies a ceiling
  layer and indicates how ceiling height was determined.
    M = Measured       W = Indefinite

VISIBILITY: Reported in statute miles and fractions. Visibility
  greater than 10 not reported.
  V = variable: see Automated Remarks

TEMPERATURE AND DEW POINT: Reported in degrees Fahrenheit.

WIND DIRECTION, SPEED & CHARACTER: Direction in tens of degrees
  from true north, except voice broadcast is in degrees magnetic.
  Speed in knots. 0000 = calm. G = gusts.
  See Automated Remarks for variable direction.

ALTIMETER SETTING: Hundredths of inches of mercury. Shown as
  last 3 digits only without decimal point
  (e.g., 30.05 inches = 005).

PRESENT WEATHER/OBSTRUCTIONS TO VISION: Reported only when
  observer is available. See Augmented Remarks. In the future,
  some systems will report precipitation, fog, and haze in the
  body of the observation.

AUTOMATED REMARKS: Precipitation accumulation reported in
  hundredth of inches (e.g., P110 = 1.10 inches; P010 = 0.10 inch).
  WND V = variable wind direction. VSBY V = variable visibility.
  DENSITY ALTITUDE is included in the voice broadcast when
  more than 1000 feet above airport elevation.

MISSING DATA: Reported as M.

AUGMENTED REMARKS: WEA: indicates manual observer data.
  Remarks include operationally significant weather conditions
  within a five mile radius of the airport (e.g., thunderstorms,
  precipitation, obstructions to vision when visibility is
  3 miles or less, fog banks). Standard weather observation
  contractions are used.
DECODED REPORT: Hometown Municipal Airport, observation at 1755 UTC, AWOS report. Measured ceiling 2000 feet overcast. Visibility 1 mile variable. Temperature 36 degrees (F), dew point 34 degrees (F), wind from 200 degrees true at 15 knots gusting to 25 knots, altimeter setting 29.90 inches. Precipitation accumulation during past hour 0.10 inch. Visibility variable between 1/2 and 2 miles. Wind direction variable from 170 degrees to 230 degrees true. Observer reports light rain (R-) and fog (F).

NOTE: Refer to the Aeronautical Information Manual for more information. Refer to the Airport/Facility Directory, aeronautical charts, and related publications for broadcast, telephone and location data. Check Notices to Airmen for AWOS system status.

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