Table of Available Diagnostics¶
Variable Name  Description  Available Units  Additional Keyword Arguments 

avo  Absolute Vorticity  105 s1  
eth/theta_e  Equivalent Potential Temperature  K degC degF 
units (str) : Set to desired units. Default is ‘K’. 
cape_2d  2D CAPE (MCAPE/MCIN/LCL/LFC)  J kg1 ; J kg1 ; m ; m  missing (float): Fill value for output only 
cape_3d  3D CAPE and CIN  J kg1  missing (float): Fill value for output only 
ctt  Cloud Top Temperature  degC K degF 
fill_nocloud (boolean): Set to True to use fill values for cloud free regions rather than surface temperature. Default is False. missing (float): The fill value to use when fill_nocloud is True. opt_thresh (float): The optical depth required to trigger the cloud top temperature calculation. Default is 1.0. units (str) : Set to desired units. Default is ‘degC’. 
cloudfrac  Cloud Fraction  %  vert_type (str): The vertical coordinate type for the cloud thresholds. Must be ‘height_agl’, ‘height_msl’, or ‘pres’. Default is ‘height_agl’. low_thresh (float): The low cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 300 m (97000 Pa) mid_thresh (float): The mid cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 2000 m (80000 Pa) high_thresh (float): The high cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 6000 m (45000 Pa) 
dbz  Reflectivity  dBZ  do_variant (boolean): Set to True to enable variant calculation. Default is False. do_liqskin (boolean): Set to True to enable liquid skin calculation. Default is False. 
mdbz  Maximum Reflectivity  dBZ  do_variant (boolean): Set to True to enable variant calculation. Default is False. do_liqskin (boolean): Set to True to enable liquid skin calculation. Default is False. 
geopt/geopotential  Geopotential for the Mass Grid  m2 s2  
geopt_stag  Geopotential for the Vertically Staggered Grid  m2 s2  
helicity  Storm Relative Helicity  m2 s2  top (float): The top level for the calculation in meters. Default is 3000.0. 
lat  Latitude  decimal degrees  
lon  Longitude  decimal degrees  
omg/omega  Omega  Pa s1  
p/pres  Full Model Pressure (in specified units) 
Pa hPa mb torr mmhg atm 
units (str) : Set to desired units. Default is ‘Pa’. 
pressure  Full Model Pressure (hPa)  hPa  
pvo  Potential Vorticity  PVU  
pw  Precipitable Water  kg m2  
rh  Relative Humidity  %  
rh2  2m Relative Humidity  %  
slp  Sea Level Pressure  hPa hPa mb torr mmhg atm 
units (str) : Set to desired units. Default is ‘hPa’. 
ter  Model Terrain Height  m km dm ft mi 
units (str) : Set to desired units. Default is ‘m’. 
td2  2m Dew Point Temperature  degC K degF 
units (str) : Set to desired units. Default is ‘degC’. 
td  Dew Point Temperature  degC K degF 
units (str) : Set to desired units. Default is ‘degC’. 
tc  Temperature in Celsius  degC  
th/theta  Potential Temperature  K degC degF 
units (str) : Set to desired units. Default is ‘K’. 
temp  Temperature (in specified units)  K degC degF 
units (str) : Set to desired units. Default is ‘K’. 
tk  Temperature in Kelvin  K  
times  Times in the File or Sequence  
xtimes  XTIME Coordinate (if applicable) 
minutes since start of model run 

tv  Virtual Temperature  K degC degF 
units (str) : Set to desired units. Default is ‘K’. 
twb  Wet Bulb Temperature  K degC degF 
units (str) : Set to desired units. Default is ‘K’. 
updraft_helicity  Updraft Helicity  m2 s2  bottom (float): The bottom level for the calculation in meters. Default is 2000.0. top (float): The top level for the calculation in meters. Default is 5000.0. 
ua  Ucomponent of Wind on Mass Points  m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
va  Vcomponent of Wind on Mass Points  m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
wa  Wcomponent of Wind on Mass Points  m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
uvmet10  10 m U and V Components of Wind Rotated to Earth Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
uvmet  U and V Components of Wind Rotated to Earth Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
wspd_wdir  Wind Speed and Direction (wind_from_direction) in Grid Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
wspd_wdir10  10m Wind Speed and Direction (wind_from_direction) in Grid Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
uvmet_wspd_wdir  Wind Speed and Direction (wind_from_direction) Rotated to Earth Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
uvmet10_wspd_wdir  10m Wind Speed and Direction (wind_from_direction) Rotated to Earth Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
z/height  Model Height for Mass Grid  m km dm ft mi 
msl (boolean): Set to False to return AGL values. True is for MSL. Default is True. units (str) : Set to desired units. Default is ‘m’. 
height_agl  Model Height for Mass Grid (AGL)  m km dm ft mi 
units (str) : Set to desired units. Default is ‘m’. 
zstag  Model Height for Vertically Staggered Grid  m km dm ft mi 
msl (boolean): Set to False to return AGL values. True is for MSL. Default is True. units (str) : Set to desired units. Default is ‘m’. 
Table of Subproduct Diagnostics¶
Some diagnostics (e.g. cape_2d) include multiple products in its
output. These products have been broken out in to individual diagnostics
to help those utilities that are unable to work with multiple outputs.
These individual diagnostics can be requested like any other diagnostic
using wrf.getvar()
. These are summarized in the table below.
Variable Name  Calculated From  Description  Available Units  Additional Keyword Arguments 

mcape  cape_2d  2D Max CAPE  J kg1  missing (float): Fill value for output only 
mcin  cape_2d  2D Max CIN  J kg1  missing (float): Fill value for output only 
lcl  cape_2d  2D Lifted Condensation Level  J kg1  missing (float): Fill value for output only 
lfc  cape_2d  2D Level of Free Convection  J kg1  missing (float): Fill value for output only 
cape3d_only  cape_3d  3D CAPE  J kg1  missing (float): Fill value for output only 
cin3d_only  cape_3d  3D CIN  J kg1  missing (float): Fill value for output only 
low_cloudfrac  cloudfrac  Cloud Fraction for Low Clouds  %  vert_type (str): The vertical coordinate type for the cloud thresholds. Must be ‘height_agl’, ‘height_msl’, or ‘pres’. Default is ‘height_agl’. low_thresh (float): The low cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 300 m (97000 Pa) mid_thresh (float): The mid cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 2000 m (80000 Pa) high_thresh (float): The high cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 6000 m (45000 Pa) 
mid_cloudfrac  cloudfrac  Cloud Fraction for Mid Clouds  %  vert_type (str): The vertical coordinate type for the cloud thresholds. Must be ‘height_agl’, ‘height_msl’, or ‘pres’. Default is ‘height_agl’. low_thresh (float): The low cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 300 m (97000 Pa) mid_thresh (float): The mid cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 2000 m (80000 Pa) high_thresh (float): The high cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 6000 m (45000 Pa) 
high_cloudfrac  cloudfrac  Cloud Fraction for High Clouds  %  vert_type (str): The vertical coordinate type for the cloud thresholds. Must be ‘height_agl’, ‘height_msl’, or ‘pres’. Default is ‘height_agl’. low_thresh (float): The low cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 300 m (97000 Pa) mid_thresh (float): The mid cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 2000 m (80000 Pa) high_thresh (float): The high cloud threshold (meters for ‘height_agl’ and ‘height_msl’, pascals for ‘pres’). Default is 6000 m (45000 Pa) 
uvmet_wspd  uvmet_wspd_wdir  Wind Speed Rotated to Earth Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
uvmet_wdir  uvmet_wspd_wdir  Wind Direction (wind_from_direction) Rotated to Earth Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
uvmet10_wspd  uvmet10_wspd_wdir  10m Wind Speed Rotated to Earth Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
uvmet10_wdir  uvmet10_wspd_wdir  10m Wind Direction (wind_from_direction) Rotated to Earth Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
wspd  wspd_wdir  Wind Speed in Grid Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
wdir  wspd_wdir  Wind Direction (wind_from_direction) in Grid Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
wspd10  wspd_wdir10  10m Wind Speed in Grid Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 
wdir10  wspd_wdir10  10m Wind Direction (wind_from_direction) in Grid Coordinates 
m s1 km h1 mi h1 kt ft s1 
units (str) : Set to desired units. Default is ‘m s1’. 