GRIB2 - TABLE 4.2-2-4

PARAMETERS FOR DISCIPLINE 2
CATEGORY 4

(Land Surface products, Fire Weather category)

In Section 0, Octet 7 = 2
In Section 4, Octet 10 = 4

Revised 09/12/2025
Red text depicts changes made since 10/30/2023


Number
(In Section 4, octet 11)
 Parameter Units
 Abbrev
0 Fire Outlook See Table 4.224
 FIREOLK
1 Fire Outlook Due to Dry Thunderstorm See Table 4.224
 FIREODT
2
 Haines Index
 Numeric HINDEX
3 Fire Burned Area % FBAREA
4 Fosberg Index (see Note 1) Numeric FOSINDX
5 Forest Fire Weather Index (as defined by the Canadian Forest Service) Numeric FWINX
6 Fine Fuel Moisture Code (as defined by the Canadian Forest Service) Numeric FFMCODE
7 Duff Moisture Code (as defined by the Canadian Forest Service) Numeric DUFMCODE
8 Drought Code (as defined by the Canadian Forest Service) Numeric DRTCODE
9 Initial Fire Spread Index (as defined by the Canadian Forest Service) Numeric INFSINX
10 Fire Buildup Index (as defined by the Canadian Forest Service) Numeric FBUPINX
11 Fire Daily Severity Rating (as defined by the Canadian Forest Service) Numeric FDSRTE
12 Keetch-Byram Drought Index Numeric KRIDX
13 Drought Factor (as defined by the Australian Forest Service) Numeric DRFACT
14 Rate of Spread (as defined by the Australian Forest Service) m s-1 RATESPRD
15 Fire Danger index (as defined by the Australian Forest Service) Numeric FIREDIDX
16 Spread Component (as defined by the US Forest Service National Fire Danger Rating System) Numeric SPRDCOMP
17 Burning Index (as defined by the US Forest Service National Fire Danger Rating System) Numeric BURNIDX
18 Ignition Component (as defined by the US Forest Service National Fire Danger Rating System) % IGNCOMP
19 Energy Release Component (as defined by the US Forest Service National Fire Danger Rating System) J m-2 ENRELCOM
20 Burning Area % BURNAREA
21 Burnable Area % BURNABAREA
22 Unburnable Area % UNBURNAREA
23 Fuel Load kg m-2 FUELLOAD
24 Combustion Completeness % COMBCO
25 Fuel Moisture Content kg kg-1 FUELMC
26 Wildfire Potential (as defined by the US NOAA Global Systems Laboratory) Numeric WFIREPOT
27 Live Leaf Fuel Load kg m-2 LLFL
28 Live Wood Fuel Load kg m-2 LWFL
29 Dead Leaf Fuel Load kg m-2 DLFL
30 Dead Wood Fuel Load kg m-2 DWFL
31 Live Fuel Moisture Content kg kg-1 LFMC
32 Fine Dead Leaf Moisture Content kg kg-1 FDLMC
33 Dense Dead Leaf Moisture Content kg kg-1 DDLMC
34 Fine Dead Wood Moisture Content kg kg-1 FDWMC
35 Dense Dead Wood Moisture Content kg kg-1 DDWMC
36 Fire Radiative Power W FRADPOW
37 Live Fuel Moisture Content in Low Vegetation kg kg-1 LFMCLV
38 Live Fuel Moisture Content in High Vegetation kg kg-1 LFMCHV
39 Mean Height of Maximum Injection m MEANHGTINJ
40 Injection Height m HGTINJ
41 Plume Bottom Height m HGTPLUMEB
42 Plume Top Height m HGTPLUMET
43-191 Reserved

192-254
 Reserved for Local Use

255
 Missing





Notes:
(1) The Fosberg index denotes the potential influence of weather on a wild and fire. It takes into account the combined effects of temperature, wind speed, relative humidity and precipitation. Higher values indicate a higher potential impact.

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