OptionalhailHail size in inches, from the GR remark (e.g. GR 1 3/4 = 1.75 in). Only present when hail size is explicitly reported in remarks.
OptionalhourlyHourly precipitation amount in inches, from the P group (e.g. P0022 = 0.22 in).
OptionaliceIce accretion amounts from the I-group (e.g. I1001 = 0.01 in last hour).
OptionallightningLightning observations.
OptionalmaintenanceTrue when the maintenance indicator ($) is present, signaling the station needs maintenance.
OptionalmissingList of sensor status codes indicating unavailable data (e.g. TSNO, PWINO, FZRANO, PNO, VISNO, CHINO).
OptionalobscurationsSurface-based obscurations reported in remarks.
OptionalpeakPeak wind observed during the observation period.
OptionalprecipitationPrecipitation begin/end events.
OptionalprecisePrecise dewpoint in degrees Celsius to tenths, from the T group (e.g. T01610100 = 10.0C).
OptionalprecisePrecise temperature in degrees Celsius to tenths, from the T group (e.g. T01610100 = 16.1C).
OptionalpressureTrue when pressure is falling rapidly (PRESFR).
OptionalpressureTrue when pressure is rising rapidly (PRESRR).
Optionalpressure3-hour pressure tendency from the 5-group (e.g. 52032 = character 2, +3.2 hPa).
The full raw remarks string (everything after "RMK").
OptionalseaSea level pressure in millibars, derived from the SLP group (e.g. SLP189 = 1018.9 mb).
OptionalseaTrue when sea level pressure is not available (SLPNO).
OptionalsecondVisibility or ceiling observations at secondary locations.
OptionalsectorSector visibility observations.
OptionalsignificantSignificant cloud types observed (CB, TCU, ACC, ACSL, CCSL, etc.).
Optionalsix6-hour maximum temperature in degrees Celsius, from the 1-group (e.g. 10066 = 6.6C).
Optionalsix6-hour minimum temperature in degrees Celsius, from the 2-group (e.g. 21012 = -1.2C).
OptionalsnowSnow depth on ground in inches, from the 4/group (e.g. 4/012 = 12 inches).
OptionalsnowSnow increasing rapidly from the SNINCR group (e.g. SNINCR 2/10).
OptionalstationAutomated station type (AO1 or AO2).
Optionalthree3-hour or 6-hour precipitation amount in inches, from the 6-group (e.g. 60048 = 0.48 in).
OptionalthunderstormThunderstorm location and movement information.
OptionaltowerTower or surface visibility observations.
Optionaltwenty24-hour maximum temperature in degrees Celsius, from the 4-group (e.g. 401280028 max=12.8C).
Optionaltwenty24-hour minimum temperature in degrees Celsius, from the 4-group (e.g. 401280028 min=0.28C).
Optionaltwenty24-hour precipitation amount in inches, from the 7-group (e.g. 70102 = 1.02 in).
OptionalvariableVariable ceiling range observed during the period.
OptionalvariableVariable sky condition (layer varying between two coverages).
OptionalvariableVariable visibility range observed during the period.
OptionalvirgaVirga observations with direction.
OptionalwaterWater equivalent of snow on ground in inches, from the 933-group (e.g. 933036 = 3.6 in).
OptionalwindWind shift event information.
Parsed METAR remarks section. Contains structured fields for commonly coded remark groups. The raw remarks string is always available for any groups not parsed into structured fields.