diff --git a/definitions/grib2/cfVarName.def b/definitions/grib2/cfVarName.def
index e6eea311b..33c22592d 100644
--- a/definitions/grib2/cfVarName.def
+++ b/definitions/grib2/cfVarName.def
@@ -5013,6 +5013,13 @@
 	 parameterNumber = 1 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean boundary layer height
+'mblh' = {
+	 discipline = 0 ;
+	 parameterCategory = 3 ;
+	 parameterNumber = 18 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Time-mean 10 metre U wind component
 'm10u' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/name.def b/definitions/grib2/name.def
index 52b6e999f..ad51e0531 100644
--- a/definitions/grib2/name.def
+++ b/definitions/grib2/name.def
@@ -5013,6 +5013,13 @@
 	 parameterNumber = 1 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean boundary layer height
+'Time-mean boundary layer height' = {
+	 discipline = 0 ;
+	 parameterCategory = 3 ;
+	 parameterNumber = 18 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Time-mean 10 metre U wind component
 'Time-mean 10 metre U wind component' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/paramId.def b/definitions/grib2/paramId.def
index 550d5bd9a..ebd8fa26b 100644
--- a/definitions/grib2/paramId.def
+++ b/definitions/grib2/paramId.def
@@ -5013,6 +5013,13 @@
 	 parameterNumber = 1 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean boundary layer height
+'235159' = {
+	 discipline = 0 ;
+	 parameterCategory = 3 ;
+	 parameterNumber = 18 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Time-mean 10 metre U wind component
 '235165' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/shortName.def b/definitions/grib2/shortName.def
index a0c2cb4f6..fbecc6945 100644
--- a/definitions/grib2/shortName.def
+++ b/definitions/grib2/shortName.def
@@ -5013,6 +5013,13 @@
 	 parameterNumber = 1 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean boundary layer height
+'mblh' = {
+	 discipline = 0 ;
+	 parameterCategory = 3 ;
+	 parameterNumber = 18 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Time-mean 10 metre U wind component
 'm10u' = {
 	 discipline = 0 ;
diff --git a/definitions/grib2/units.def b/definitions/grib2/units.def
index 4e2175d0f..e1ef35857 100644
--- a/definitions/grib2/units.def
+++ b/definitions/grib2/units.def
@@ -5013,6 +5013,13 @@
 	 parameterNumber = 1 ;
 	 typeOfStatisticalProcessing = 0 ;
 	}
+#Time-mean boundary layer height
+'m' = {
+	 discipline = 0 ;
+	 parameterCategory = 3 ;
+	 parameterNumber = 18 ;
+	 typeOfStatisticalProcessing = 0 ;
+	}
 #Time-mean 10 metre U wind component
 'm s**-1' = {
 	 discipline = 0 ;