Interface Output from the NCEP Aviation Weather Decoder
| Mnemonic | Description | Units | Value |
|---|---|---|---|
| YEAR | Report year | Year | rivals (iryear) |
| MNTH | Report month | Month | rivals (irmnth) |
| DAYS | Report day | Day | rivals (irdays) |
| HOUR | Report hour | Hour | rivals (irhour) |
| MINU | Report minute | Minute | rivals (irminu) |
| THRP | Report type flag | Numeric | rivals (irthrp) |
| AUTO | Automatic station flag | WMO BUFR table 002001 | rivals (irauto) |
| DRCT | Wind direction | Degrees true | rivals (irdrct) |
| SPED | Wind speed | Meters/second | rivals (irsped) |
| SKNT | Wind speed | Knots | rivals (irsknt) |
| GUMS | Wind gust speed | Meters/second | rivals (irgums) |
| GUST | Wind gust speed | Knots | rivals (irgust) |
| DRC1 | First variable wind direction | Degrees true | rivals (irdrc1) |
| DRC2 | Second variable wind direction | Degrees true | rivals (irdrc2) |
| VRTV | Vertical visdbility | Feet | rivals (irvrtv) |
| TMPC | Temperature | Degrees Celsius | rivals (irtmpc) |
| DWPC | Dew Point | Degrees Celsius | rivals (irdwpc) |
| ALTI | Altimeter setting | Inches Hg | rivals (iralti) |
| ALTM | Altimeter setting | Hectopascals | rivals (iraltm) |
| P03I | 3 hour precipitation | Inches | rivals (irp03i) |
| P06I | 6 hour precipitation | Inches | rivals (irp06i) |
| P24I | 24 hour precipitation | Inches | rivals (irp24i) |
| P01I | 1 hour precipitation | Inches | rivals (irp01i) |
| SNOW | Total snow amount | Inches | rivals (irsnow) |
| SNEW | Depth of fresh snow | Inches | rivals (irsnew) |
| WEQS | Water equivalent of ground snow | Inches | rivals (irweqs) |
| CTYL | Low-level cloud type | WMO Code Table 0513 | rivals (irctyl) |
| CTYM | Mid-level cloud type | WMO Code Table 0515 | rivals (irctym) |
| CTYH | High-level cloud type | WMO Code Table 0509 | rivals (irctyh) |
| MSUN | Duration of sunshine | Minutes | rivals (irmsun) |
| PMSL | Mean sea level pressure | Hectopascals | rivals (irpmsl) |
| TDXC | 24 hour maximum temperature | Degrees Celsius | rivals (irtdxc) |
| TDNC | 24 hour minimum temperature | Degrees Celsius | rivals (irtdnc) |
| T6XC | 6 hour maximum temperature | Degrees Celsius | rivals (irt6xc)) |
| T6NC | 6 hour minimum temperature | Degrees Celsius | rivals (irt6nc) |
| P03D | 3 hour pressure tendency | Hectopascals | rivals (irp03d) |
| CTMX | City maximum temperature | Degrees Fahrenheit | rivals (irctmx) |
| CTMN | City minimum temperature | Degrees Fahrenheit | rivals (irctmn) |
| CTTP | City hourly temperature | Degress Fahrenheit | rivals (ircttp) |
| CORN | Report correction indicator | WMO Code Table 3302 | rivals (ircorn) |
| PWDR | Peak wind direction | Degrees true | rivals (irpwdr) |
| PWSP | Peak wind speed | Knots | rivals (irpwsp) |
| PWHR | Hour of peak wind | Hour | rivals (irpwhr) |
| PWMN | Minute of peak wind | Minute | rivals (irpwmn) |
| WSHH | Hour of wind shift | Hour | rivals (irwshh) |
| WSHM | Minute of wind shift | Minute | rivals (irwshm) |
| SLAT | Station latitude | Degrees | rivals (irslat) |
| SLON | Station longitude | Degrees | rivals (irslon) |
| SELV | Station elevation | Meters | rivals (irselv) |
| SST1 | Sea surface temperature | Degrees Celsius | rivals (irsst1) |
| SEST | State of the sea | WMO Code Table 3700 | rivals (irsest) |
| NVSB | Number of visdbility groups | Numeric | rivals (irnvsb) |
| VSBY | Horizontal visdbility | Statute Miles | rivals (irvsby(1..NVSB)) |
| VSBK | Horizontal visdbility | Kilometers | rivals (irvsbk(1..NVSB)) |
| VSFL | Visdbility P or M indicator | Code Table | rivals (irvsfl(1..NVSB)) |
| NRWY | Number of runway groups | Numeric | rivals (irnrwy) |
| V1RI | First runway visual range | Meters | rivals (irv1ri(1..NRWY)) |
| V2RI | Second runway visual range | Meters | rivals (irv2ri(1..NRWY)) |
| V1RF | First runway visual range flag | Code Table | rivals (irv1rf(1..NRWY)) |
| V2RF | Second runway visual range flag | Code Table | rivals (irv2rf(1..NRWY)) |
| RWYT | Runway visual range tendency | Code Table | rivals (irrwyt(1..NRWY)) |
| RWID | Runway identifier | CCITT IA5 | civals (icrwid(1..NRWY)) |
| NPWX | Number of weather groups | Numeric | rivals (irnpwx) |
| WCOD | Weather character string | CCITT IA5 | civals (icwcod(1..NPWX)) |
| NSKY | Number of sky condition groups | Numeric | rivals (irnsky) |
| CMTN | GEMPAK Sky cover number | Degrees Celsius | rivals (ircmtn(1..NSKY)) |
| STID | Station identifier | CCITT IA5 | civals (icstid) |
