Rapid Refresh Forecast System (RRFS) North America 3-D Pressure Level Fields GRIB2 Table Documentation 13 November 2025 Record Disc Cat Param ShortName Description Level Units 1 0 3 0 PRES Pressure Hybrid Level 1 Pa 2 0 1 22 CLMR Cloud Mixing Ratio Hybrid Level 1 kg/kg 3 0 1 23 ICMR Ice Water Mixing Ratio Hybrid Level 1 kg/kg 4 0 1 24 RWMR Rain Mixing Ratio Hybrid Level 1 kg/kg 5 0 1 25 SNMR Snow Mixing Ratio Hybrid Level 1 kg/kg 6 0 1 32 GRLE Graupel Hybrid Level 1 kg/kg 7 0 6 1 TCDC Total Cloud Cover Hybrid Level 1 % 8 0 16 4 REFD Reflectivity Hybrid Level 1 dB 9 0 1 21 TCOND Total Condensate Hybrid Level 1 kg/kg 10 0 3 5 HGT Geopotential Height Hybrid Level 1 gpm 11 0 0 0 TMP Temperature Hybrid Level 1 K 12 0 0 2 POT Potential Temperature Hybrid Level 1 K 13 0 1 1 RH Relative Humidity Hybrid Level 1 % 14 0 0 6 DPT Dew Point Temperature Hybrid Level 1 K 15 0 1 0 SPFH Specific Humidity Hybrid Level 1 kg/kg 16 0 2 2 UGRD U-Component of Wind Hybrid Level 1 m/s 17 0 2 3 VGRD V-Component of Wind Hybrid Level 1 m/s 18 0 2 9 DZDT Vertical Velocity (Geometric) Hybrid Level 1 m/s 19 0 19 11 TKE Turbulent Kinetic Energy Hybrid Level 1 J/kg 1-19 repeats for hybrid level 2, excluding RH and SPFH 36 0 16 5 REFC Composite Reflectivity Entire Atmosphere dB 37 0 15 3 VIL Vertically-Integrated Liquid Water Entire Atmosphere kg/m2 38 0 19 0 VIS Visibility Surface m 39 0 16 4 REFD Reflectivity 263 K Level dB 40 0 3 5 HGT Geopotential Height Planetary Boundary Lyr gpm 41 0 2 2 UGRD U-Component of Wind Planetary Boundary Lyr m/s 42 0 2 3 VGRD V-Component of Wind Planetary Boundary Lyr m/s 43 0 2 224 VRATE Ventilation Rate Planetary Boundary Lyr m2/s 44 0 2 22 GUST Wind Speed (Gust) Surface m/s 45 0 16 3 RETOP Echo Top Entire Atmosphere m 46 0 3 5 HGT Geopotential Height 2 mb gpm 47 0 0 0 TMP Temperature 2 mb K 48 0 1 1 RH Relative Humidity 2 mb % 49 0 0 6 DPT Dew Point Temperature 2 mb K 50 0 1 0 SPFH Specific Humidity 2 mb kg/kg 51 0 2 9 DZDT Vertical Velocity (Geometric) 2 mb m/s 52 0 2 2 UGRD U-Component of Wind 2 mb m/s 53 0 2 3 VGRD V-Component of Wind 2 mb m/s 54 0 2 10 ABSV Absolute Vorticity 2 mb 1/s 55 0 1 22 CLMR Cloud Mixing Ratio 2 mb kg/kg 56 0 1 23 ICMR Ice Water Mixing Ratio 2 mb kg/kg 57 0 1 24 RWMR Rain Mixing Ratio 2 mb kg/kg 58 0 1 25 SNMR Snow Mixing Ratio 2 mb kg/kg 59 0 1 32 GRLE Graupel 2 mb kg/kg 46-59 repeats for all isobaric levels 251 0 2 4 STRM Stream Function 250 mb m2/s 392 0 2 4 STRM Stream Function 500 mb m2/s 586 0 1 26 MCONV Horizontal Moisture Convergence 850 mb kg/kg/s 643 0 1 26 MCONV Horizontal Moisture Convergence 950 mb kg/kg/s 652 2 4 2 HINDEX Haines Index Surface Numeric 680 0 2 220 MAXUVV Hourly Maximum of Upward Vertical Velocity 100-1000 mb m/s 681 0 2 221 MAXDVV Hourly Maximum of Downward Vertical Velocity 100-1000 mb m/s 682 0 3 192 MSLET MSLP (Eta model reduction) Mean Sea Level Pa 683 0 3 5 HGT Geopotential Height 1000 mb gpm 684 0 16 4 REFD Reflectivity 4000 m above ground dB 684 0 16 4 REFD Reflectivity 1000 m above ground dB 686 0 16 198 MAXREF Hourly Maximum of Simulated Reflectivity 1000 m above ground dB 687 0 16 198 MAXREF Hourly Maximum of Simulated Reflectivity 263 K Level dB 688 0 7 199 MXUPHL Hourly Maximum of Updraft Helicity 5000-2000m above ground m2/s2 689 0 7 200 MNUPHL Hourly Minimum of Updraft Helicity 5000-2000m above ground m2/s2 688-689 repeats for 0-3000 m above ground 692 0 2 12 RELV Relative Vorticity (Hourly Maximum) 2000-0 m 1/s 1478 0 2 12 RELV Relative Vorticity (Hourly Maximum) 1000-0 m AGL 1/s 1479 0 2 12 RELV Relative Vorticity (Hourly Maximum) Hybrid Level 1 1/s 695 0 1 31 HAIL Hail Size (Hourly Maximum) Surface m 696 0 17 192 LTNG Lightning (Hourly Maximum) Entire Atmosphere non-dim 697 0 3 0 PRES Pressure Surface Pa 698 0 3 5 HGT Geopotential Height Surface gpm 699 0 0 0 TMP Temperature Surface K 700 0 0 2 POT Potential Temperature Surface K 701 0 1 0 SPFH Specific Humidity Surface kg/kg 702 0 1 29 ASNOW Total Snowfall Surface m 703 2 0 2 TSOIL Soil Temperature 0 m below ground K 704 2 0 192 SOILW Volumetric Soil Moisture Content 0 m below ground Fraction 705 2 3 5 SOILL Liquid Volumetric Soil Moisture (non-frozen) 0 m below ground Proportion 703-705 repeats for 0.01 m, 0.04 m, 0.1 m, 0.3 m, 0.6 m, 1 m, 1.6 m, 3 m below ground 730 2 0 11 MSTAV Moisture Availability 0 m underground % 731 2 3 20 CISOILM Column-Integrated Soil Moisture 0 m underground kg/m2 732 2 0 13 CNWAT Plant Canopy Surface Water Surface kg/m2 733 0 1 13 WEASD Water Equivalent of Accumulated Snow Depth Surface kg/m2 734 0 1 42 SNOWC Snow Cover Surface % 735 0 1 11 SNOD Snow Depth Surface m 736 2 3 8 SMDRY Direct Evaporation Cease (soil moisture) Surface Proportion 737 2 3 9 POROS Soil Porosity Surface Proportion 738 0 0 0 TMP Temperature 2 m above ground K 739 0 1 0 SPFH Specific Humidity 2 m above ground kg/kg 740 0 0 6 DPT Dew Point Temperature 2 m above ground K 741 0 0 7 DEPR Dew Point Depression (or deficit) 2 m above ground K 742 0 1 1 RH Relative Humidity 2 m above ground % 743 0 0 4 TMAX Maximum Temperature 2 m above ground K 744 0 0 5 TMIN Minimum Temperature 2 m above ground K 745 0 1 27 MAXRH Maximum Relative Humidity 2 m above ground % 746 0 1 198 MINRH Minimum Relative Humidity 2 m above ground % 747 0 20 0 MASSDEN Mass Density of Particulate Organic Matter 8 m above ground kg/m3 748 0 20 0 MASSDEN Mass Density of Dust (< 2.5 x 10-6) 8 m above ground kg/m3 749 0 20 0 MASSDEN Mass Density of Total Aerosol (< 2.5 x 10-6) 8 m above ground kg/m3 (1-hour average) 750 0 20 0 MASSDEN Mass Density of Total Aerosol (< 1 x 10-5) 8 m above ground kg/m3 (1-hour average) 751 0 20 0 MASSDEN Mass Density of Dust(>= 2.5 x 10-6, < 1 x 10-5) 8 m above ground kg/m3 752 0 2 2 UGRD U-Component of Wind 10 m above ground m/s 753 0 2 3 VGRD V-Component of Wind 10 m above ground m/s 754 0 2 222 MAXUW U-Component of Hourly Maximum 10m Wind Speed 10 m above ground m/s 755 0 2 223 MAXVW V-Component of Hourly Maximum 10m Wind Speed 10 m above ground m/s 756 0 2 1 WIND Wind Speed (Hourly Maximum) 10 m above ground m/s 757 0 1 39 CPOFP Percent Frozen Precipitation Surface % 758 0 1 7 PRATE Precipitation Rate Surface kg/m2/s 759 0 1 7 PRATE Precipitation Rate (Hourly Maximum) Surface kg/m2/s 760 0 1 8 APCP Total Precipitation (1-hour accumulation) Surface kg/m2 761 0 1 8 APCP Total Precipitation (run-total accumulation) Surface kg/m2 762 0 1 227 FROZR Frozen Rain (run-total accumulation) Surface kg/m2 763 0 1 225 FRZR Freezing Rain (run-total accumulation) Surface kg/m2 764 0 1 50 TSNOWP Total Snow Precipitation (run-total accum) Surface kg/m2 765 0 1 16 SNOM Snow Melt (1-hour total) Surface kg/m2 766 1 0 6 SSRUN Storm Surface Runoff (1-hour total) Surface kg/m2 762-764 repeats for 1-hour accumulation 770 1 1 197 QPFFFG Binary Probability of Precipitation Exceeding Surface Flash Flood Guidance Values (1-hour period) 771 1 1 197 QPFFFG Binary Probability of Precipitation Exceeding Surface Flash Flood Guidance Values (run total) 772 1 1 196 QPFARI Binary Probability of Precipitation Exceeding Surface 2 year Average Recurrence Interval (1-hour) 773 1 1 196 QPFARI Binary Probability of Precipitation Exceeding Surface 2 year Average Recurrence Interval (run total) 772-773 repeats for 5 year, 10 year, 100 year ARIs 780 0 3 5 HGT Geopotential Height Lowest Level of gpm the Wet Bulb Zero 781 0 1 36 CSNOW Categorical Snow Surface - 782 0 1 35 CICEP Categorical Ice Pellets Surface - 783 0 1 34 CFRZR Categorical Freezing Rain Surface - 784 0 1 33 CRAIN Categorical Rain Surface - 785 0 0 10 LHTFL Latent Heat Net Flux (1-hour average) Surface W/m2 786 0 0 11 SHTFL Sensible Heat Net Flux (1-hour average) Surface W/m2 787 2 0 10 GFLUX Ground Heat Flux (1-hour average) Surface W/m2 788 0 0 16 SNOHF Snow Phase Change Heat Flux (1-hour average) Surface W/m2 789 0 1 40 PEVAP Potential Evaporation (1-hour accumulation) Surface kg/m2 790 2 0 1 SFCR Surface Roughness Surface m 791 0 2 30 FRICV Frictional Velocity Surface m/s 792 0 2 29 CD Drag Coefficient Surface Numeric 793 0 0 11 SHTFL Sensible Heat Net Flux Surface W/m2 794 0 0 10 LHTFL Latent Heat Net Flux Surface W/m2 795 2 0 12 SFEXC Exchange Coefficient Surface kg/m2/s 796 2 0 4 VEG Vegetation Surface % 797 2 0 10 GFLUX Ground Heat Flux Surface W/m2 798 2 0 198 VGTYP Vegetation Type Surface 799 2 3 0 SOTYP Soil Type Surface 800 2 0 16 RSMIN Minimal Stomatal Resistance Surface s/m 801 2 3 6 RLYRS Number of Soil Layers in Root Zone Surface Numeric 802 2 0 26 WILT Wilting Point Surface Fraction 803 2 3 7 SMREF Transpiration Stress-onset (soil moisture) Surface Proportion 804 0 3 0 PRES Pressure Top of Atmosphere Pa 805 0 7 10 LFTX Surface Lifted Index 500-1000 mb K 806 0 7 6 CAPE Convective Available Potential Energy Surface J/kg 807 0 7 7 CIN Convective Inhibition Surface J/kg 808 0 1 3 PWAT Precipitable Water Entire Atmosphere kg/m2 809 0 20 102 AOTK Aerosol Optical Thickness Entire Atmosphere Numeric 810 0 20 1 COLMD Column-Integrated Mass Density of Entire Atmosphere kg/m2 Particulate Organic Matter 811 0 20 1 COLMD Column-Integrated Mass Density of Dust Entire Atmosphere kg/m2 (< 2.5 x 10-6) 812 0 20 1 COLMD Column-Integrated Mass Density of Dust Entire Atmosphere kg/m2 (>= 2.5 x 10-6, < 1 x 10-5) 813 0 20 3 AEMFLX Aerosol Emission Mass Flux of Entire Atmosphere kg/m2/s Particulate Organic Matter 814 0 1 26 MCONV Horizonal Moisture Convergence Entire Atmosphere kg/kg/s 815 0 3 5 HGT Geopotential Height Lowest Bottom Level of gpm Supercooled Liquid Water Lyr 816 0 3 5 HGT Geopotential Height Highest Top Level of gpm Supercooled Liquid Water Lyr 817 0 6 1 TCDC Total Cloud Cover Boundary Lyr Cloud Lyr % 818 0 6 3 LCDC Low Cloud Cover Low Cloud Layer % 819 0 6 4 MCDC Medium Cloud Cover Middle Cloud Layer % 820 0 6 5 HCDC High Cloud Cover High Cloud Layer % 821 0 6 1 TCDC Total Cloud Cover Entire Atmosphere % 822 0 6 1 TCDC Total Cloud Cover (1-hour average) Entire Atmosphere % 823 0 3 0 PRES Pressure Cloud Base Pa 824 0 3 5 HGT Geopotential Height Cloud Base gpm 825 0 3 5 HGT Geopotential Height Cloud Ceiling gpm 826 0 6 13 CEIL Ceiling Cloud Ceiling m 827 0 3 0 PRES Pressure Grid Scale Pa Cloud Bottom Level 828 0 3 0 PRES Pressure Cloud Top Pa 829 0 3 5 HGT Geopotential Height Cloud Top gpm 830 0 0 0 TMP Temperature Cloud Top K 831 0 4 4 BRTMP Brightness Temperature Top of Atmosphere K 832 0 3 0 PRES Pressure Grid Scale Pa Cloud Top Level 833 0 4 7 DSWRF Downward Shortwave Radiation Flux (1-hour avg) Surface W/m2 834 0 5 3 DLWRF Downward Longwave Radiation Flux (1-hour avg) Surface W/m2 835 0 4 8 USWRF Upward Shortwave Radiation Flux (1-hour avg) Surface W/m2 836 0 5 4 ULWRF Upward Longwave Radiation Flux (1-hour avg) Surface W/m2 837 0 4 8 USWRF Upward Shortwave Radiation Flux (1-hour avg) Top of Atmosphere W/m2 838 0 5 4 ULWRF Upward Longwave Radiation Flux (1-hour avg) Top of Atmosphere W/m2 833-836 and 838 repeats for instantaneous values 844 2 4 26 WFIREPOT Hourly Wildfire Potential Surface Numeric 845 0 4 196 CSDSF Clear Sky Downward Solar Flux Surface W/m2 846 0 4 200 VBDSF Visible Beam Downward Solar Flux Surface W/m2 847 0 4 201 VDDSF Visible Diffuse Downward Solar Flux Surface W/m2 848 0 7 8 HLCY Storm Relative Helicity 3000-0 m above ground m2/s2 849 0 7 8 HLCY Storm Relative Helicity 1000-0 m above ground m2/s2 850 0 2 27 USTM U-Component Storm Motion 6000-0 m above ground m/s 851 0 2 28 VSTM V-Component Storm Motion 6000-0 m above ground m/s 852 0 7 15 UPHL Updraft Helicity 5000-2000m above ground m2/s2 853 0 2 15 VUCSH Vertical U-Component Shear 0-1000 m above ground 1/s 854 0 2 16 VVCSH Vertical V-Component Shear 0-1000 m above ground 1/s 853-854 repeats for 0-6000 m above ground 857 0 3 0 PRES Pressure Tropopause Pa 858 0 3 5 HGT Geopotential Height Tropopause gpm 859 0 0 0 TMP Temperature Tropopause K 860 0 0 2 POT Potential Temperature Tropopause K 861 0 2 2 UGRD U-Component of Wind Tropopause m/s 862 0 2 3 VGRD V-Component of Wind Tropopause m/s 863 0 2 25 VWSH Vertical Speed Shear Tropopause 1/s 864 0 3 0 PRES Pressure Max Wind Pa 865 0 3 5 HGT Geopotential Height Max Wind gpm 866 0 2 2 UGRD U-Component of Wind Max Wind m/s 867 0 2 3 VGRD V-Component of Wind Max Wind m/s 868 0 0 0 TMP Temperature 30 m above ground K 869 0 2 2 UGRD U-Component of Wind 30 m above ground m/s 870 0 2 3 VGRD V-Component of Wind 30 m above ground m/s 868-870 repeats for 50 m, 80 m, 100 m, 160 m, 320 m (above ground), 305 m, 457 m, 610 m, 914 m, 1524 m, 1829 m, 2134 m, 2743 m, 3658 m, 4572 m (above mean sea level) 919 0 3 5 HGT Geopotential Height 0C Isotherm gpm 920 0 1 1 RH Relative Humidity 0C Isotherm % 921 0 3 0 PRES Pressure 0C Isotherm Pa 919-921 repeats for Highest Tropospheric Freezing Level 925 0 3 5 HGT Geopotential Height 253 K Level gpm 926 0 3 0 PRES Pressure 30-0 mb above ground Pa 927 0 0 0 TMP Temperature 30-0 mb above ground K 928 0 0 2 POT Potential Temperature 30-0 mb above ground K 929 0 1 1 RH Relative Humidity 30-0 mb above ground % 930 0 0 6 DPT Dew Point Temperature 30-0 mb above ground K 931 0 1 0 SPFH Specific Humidity 30-0 mb above ground kg/kg 932 0 1 26 MCONV Horizontal Moisture Convergence 30-0 mb above ground kg/kg/s 933 0 2 2 UGRD U-Component of Wind 30-0 mb above ground m/s 934 0 2 3 VGRD V-Component of Wind 30-0 mb above ground m/s 935 0 1 3 PWAT Precipitable Water 30-0 mb above ground kg/m2 936 0 7 0 PLI Parcel Lifted Index (to 500 hPa) 30-0 mb above ground K 926-927, 929, 931, 933-934 repeats for 60-30 mb, 90-60 mb, 120-90 mb, 150-120 mb, 180-150 mb above ground 967 0 7 11 4LFTX Best (4 layer) Lifted Index 180-0 mb above ground K 968 0 7 6 CAPE Convective Available Potential Energy 180-0 mb above ground J/kg (Most Unstable) 969 0 7 7 CIN Convective Inhibition (Most Unstable) 180-0 mb above ground J/kg 970 0 3 18 HPBL Planetary Boundary Layer Height Surface m 971 0 3 5 HGT Geopotential Height Level of Adiabatic gpm Condensation from Sfc 972 0 3 0 PRES Pressure Level of Adiabatic Pa Condensation from Sfc 973 0 7 6 CAPE Convective Available Potential Energy 90-0 mb above ground J/kg (Mixed Layer) 974 0 7 7 CIN Convective Inhibition (Mixed Layer) 90-0 mb above ground J/kg 973-974 repeats for 255-0 mb AGL (most unstable, lifts the layer with highest theta-e in lowest 300 mb) 977 0 3 5 HGT Geopotential Height Equilibrium Level gpm 978 0 0 205 ELMELT Effective Layer (EL) Temperature Equilibrium Level C 979 0 3 200 PLPL Pressure of Level From Which Parcel was Lifted 255-0 mb above ground Pa 980 0 7 6 CAPE Convective Available Potential Energy 0-3000 m above ground J/kg 981 0 7 204 EFHL Effective Storm Relative Helicity Surface m2/s2 982 0 7 206 CANGLE Critical Angle 0-500 m above ground Degree 983 0 3 205 LAYTH Layer Thickness 261 K - 256 K Level m 984 0 1 242 RHPW Relative Humidity w.r.t. Precipitable Water Entire Atmosphere % 985 0 191 192 NLAT Latitude (-90 to 90) Surface Degree 986 0 191 193 ELON East Longitude (0 to 360) Surface Degree 987 2 0 0 LAND Land Cover (0=sea, 1=land) Surface Proportion 988 10 2 0 ICEC Ice Cover Surface Proportion 989 0 19 1 ALBDO Albedo Surface % 990 0 19 17 MXSALB Maximum Snow Albedo Surface % 991 10 3 0 WTMP Water Temperature Surface K