Merge pull request #181 from wmo-im/174-additional-fire-weather-field…

…-to-code-table-42-discipline-2-category-4-fire-weather-products

#174 additional fire weather field to code table 42 discipline 2 category 4 fire weather products

GRIB2_CodeFlag_4_2_CodeTable_en.csv

@@ -822,7 +822,9 @@ Parameter number by product discipline and parameter category,"Product disciplin
 Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",17,,Burning index (as defined by the US Forest Service National Fire Danger Rating System),,,Numeric,Operational
 Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",18,,Ignition component (as defined by the US Forest Service National Fire Danger Rating System),,,%,Operational
 Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",19,,Energy release component (as defined by the US Forest Service National Fire Danger Rating System),,,Joule/m2,Operational
-Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",20-191,,Reserved,,,,Operational
+Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",20-25,,Reserved,,,,Operational
+Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",26,,Wildfire potential (as defined by the US NOAA Global Systems Laboratory),,,Numeric,Operational
+Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",27-191,,Reserved,,,,Operational
 Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",192-254,,Reserved for local use,,,,Operational
 Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 4: fire weather products",255,,Missing,,,,Operational
 Parameter number by product discipline and parameter category,"Product discipline 2 - Land surface products, parameter category 5: glaciers and inland ice",0,,Glacier cover,(see Note),26,Proportion,Operational