Number 
Level/Layer 
Parameter 
Forecast Valid 
Description 
001 
surface

TMP 
analysis 
Temperature [K]

002 
surface

DPT 
analysis 
Dew Point Temperature [K]

003 
surface

SPFH 
analysis 
Specific Humidity [kg/kg]

004.1 
surface

UGRD 
analysis 
UComponent of Wind [m/s]

004.2 
surface

VGRD 
analysis 
VComponent of Wind [m/s]

005 
surface

GUST 
analysis 
Wind Speed (Gust) [m/s]

006 
surface

PRES 
analysis 
Pressure [Pa]

007 
surface

HGT 
analysis 
Geopotential Height [gpm]

008 
surface

LAND 
analysis 
Land Cover (0=sea, 1=land)
[Proportion]

009 
surface

TCDC 
analysis 
Total Cloud Cover [%]

010 
entire atmosphere
(considered as a
single layer)

REFC 
analysis 
Composite reflectivity [dB]

011 
lowest level of
the wet bulb zero

HGT 
analysis 
Geopotential Height [gpm]

012 
surface

VIS 
analysis 
Visibility [m]

013 
cloud ceiling

HGT 
analysis 
Geopotential Height [gpm]

014 
mean sea level

MSLET M 
analysis 
(Eta model reduction) [Pa]

015 
planetary boundary
layer

WDIR 
analysis 
Wind Direction (from which
blowing) [degtrue]

016 
planetary boundary
layer

WIND 
analysis 
Wind Speed [m/s]

017 
planetary boundary
layer

RH 
analysis 
Relative Humidity [%]

018 
planetary boundary
layer

DIST 
analysis 
Geometric Height [m]

019 
surface

4LFTX 
analysis 
Best (4 layer) Lifted Index
[K]

020 
surface

HINDEX 
analysis 
Haines Index [Numeric]
