Interface Output from the NCEP Marine Surface Decoder

Mnemonic	Description	Units	Value
STID	Ship or Platform ID	CCITT IA5	civals (icstid)
SLAT	Station latitude	Degrees	rivals (irslat)
SLON	Station longitude	Degrees	rivals (irslon)
SELV	Station elevation	Meters	rivals (irselv)
TOST	Type of station	WMO BUFR Code Table 002001	rivals (irtost)
ITSO	Indicator for station operation and for present and past weather	WMO Code Table 1860	rivals (iritso)
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)
TDMP	Direction of movement of ship	WMO Code Table 0700	rivals (irtdmp)
ASMP	Average speed of ship	WMO Code Table 4451	rivals (irasmp)
ISWS	Indicator for source and units of wind speed	WMO Code Table 1855	rivals (irisws)
DRCT	Wind direction	Degrees true	rivals (irdrct)
SPED	Wind speed	Meters / Sec	rivals (irsped)
NSPW	Number of supplementary wind groups	Numeric	rivals (irnspw)
SPWP	Supplementary wind period	Minutes	rivals (irspwp(1..NSPW))
SPWS	Supplementary wind speed	Meters / Sec	rivals (irspws(1..NSPW))
SPWT	Supplementary wind type groups	Code Table	rivals (irspwt(1..NSPW))
XS10	10-meter extrapolated wind speed	Meters / Sec	rivals (irxs10)
XS20	20-meter extrapolated wind speed	Meters / Sec	rivals (irxs20)
PWYR	Year of peak wind observation	Year	rivals (irpwyr)
PWMO	Month of peak wind observation	Month	rivals (irpwmo)
PWDY	Day of month of peak wind observation	Day	rivals (irpwdy)
PWHR	Hour of peak wind observation	Hour	rivals (irpwhr)
PWMN	Minute of hour of peak wind observation	Minute	rivals (irpwmn)
PWSP	Peak wind speed	Meters / Sec	rivals (irpwsp)
PWDR	Peak wind direction	Degrees True	rivals (irpwdr)
NCWD	Number of sets of continuous wind groups	Numeric	rivals (irncwd)
TPMI	Time displacement of continuous wind groups	Minutes	rivals (irtpmi(1..NCWD))
WDSC	Speed of continuous wind	Meters / Sec	rivals (irwdsc(1..NCWD))
WDRC	Direction of continuous wind	Degrees True	rivals (irwdrc(1..NCWD))
PRES	Station pressure	Hectopascals	rivals (irpres)
PMSL	Mean sea level pressure	Hectopascals	rivals (irpmsl)
CHPT	Characteristic of 3-hourly pressure tendency	WMO Code Table 200	rivals (irchpt)
3HPC	3-hourly pressure change	Hectopascals	rivals (ir3hpc)
P03D	appp 3-hourly pressure change group	Numeric	rivals (irp03d)
24PC	Amount of surface pressure change in last 24 hours	Hectopascals	rivals (ir24pc)
TMPC	Temperature	Degrees Celsius	rivals (irtmpc)
DWPC	Dewpoint temperature	Degrees Celsius	rivals (irdwpc)
RELH	Relative humidity	Percent	rivals (irrelh)
MSST	Indicator for sign and type of measurement of sea surface temperature	Code Table 3850	rivals (irmsst)
SSTC	Sea surface temperature	Degrees Celsius	rivals (irsstc)
STMWC	Indicator for sign and type of measurement of wet bulb temperature	WMO Code Table 3855	rivals (irstwc)
TMWC	Wet bulb temperature	Degrees Celsius	rivals (irtmwc)
DTFV1	Period of maximum air temperature	Hours	rivals (irdtv1)
MXTM	Maximum air temperature	Degrees Celsius	rivals (irmxtm)
DTFV2	Period of minimum air temperature	Hours	rivals (irdtv2)
MITM	Minimum air temperature	Degrees Celsius	rivals (irmitm)
WWMO	Present weather reported from a manned weather station	WMO Code Table 4677	rivals (irwwmo)
WWMA	Present weather reported from an automatic weather station	WMO Code Table 4680	rivals (irwwma)
PWWM	Past weather 1 reported from a manned weather station	WMO Code Table 4561	rivals (irpwwm)
PWWA	Past weather 1 reported from an automatic weather station	WMO Code Table 4531	rivals (irpwwa)
PSW2	Past weather 2 reported from a manned weather station	WMO Code Table 4561	rivals (irpsw2)
PWA2	Past weather 2 reported from an automatic weather station	WMO Code Table 4531	rivals (irpwa2)
PWPD	Period of the past weather	Hours	rivals (irpwpd)
INPC	Indicator for inclusion or omission of precipitation data	WMO Code Table 1819	rivals (irinpc)
NPCV	Number of precipitation values	Numeric	rivals (irnpcv)
PPRD	Period of the precipitation	Hours	rivals (irpprd(1..NPCV))
PAMT	Precipitation amount	Millimeters	rivals (irpamt(1..NPCV))
WPER	Period of the waves obtained by instrumental methods	Seconds	rivals (irwper)
WHGT	Height of the waves obtained by instrumental methods	Meters	rivals (irwhgt)
POWW	Period of the wind waves	Seconds	rivals (irpoww)
HOWW	Height of the wind waves	Meters	rivals (irpoww)
NSWV	Number of sets of swell wave groups	Numeric	rivals (irnswv)
DOSW	True direction from which swell waves are coming	Degrees	rivals (irdosw(1..NSWV))
POSW	Period of swell waves	Seconds	rivals (irposw(1..NSWV))
HOSW	Height of swell waves	Meters	rivals (irhosw(1..NSWV))
VSBK	Horizontal visibility	Kilometers	rivals (irvsbk)
VRTM	Vertical visibility	Meters	rivals (irvrtm)
CFRT	Total cloud cover	WMO Code Table 2700	rivals (ircfrt)
NCLO	Total number of cloud layers described in Sections 1 and 3	Numeric	rivals (irnclo)
VSSO	Vertical significance	WMO BUFR Table 008002	rivals (irvsso(1..NCLO))
CLAM	Cloud amount	WMO BUFR Table 020011	rivals (irclam(1..NCLO))
CLTP	Genus of cloud	WMO BUFR Table 020012	rivals (ircltp(1..NCLO))
HOCB	Height of cloud base	Meters	rivals (irhocb(1..NCLO))
CSEC	Report section of location of cloud data	Numeric	rivals (ircsec(1..NCLO))
HBLCS	Height of base of lowest cloud seen	WMO Code Table 1600	rivals (irhblc)
COIA	Ice accretion on ships	WMO Code Table 1751	rivals (ircoia)
IDTH	Thickness of ice accretion on ships	Meters	rivals (iridth)
ROIA	Rate of ice accretion on ships	WMO Code Table 3551	rivals (irroia)
TLLW	Tide elevation with respect to mean lower low water	Feet	rivals (irtllw)