diff --git a/tests/WE2E/run_WE2E_tests.sh b/tests/WE2E/run_WE2E_tests.sh
index 014cf8912c..b11c237be7 100755
--- a/tests/WE2E/run_WE2E_tests.sh
+++ b/tests/WE2E/run_WE2E_tests.sh
@@ -970,6 +970,11 @@ specified for this machine (MACHINE):
     fi
 
     pregen_dir="${pregen_basedir}/${PREDEF_GRID_NAME}"
+    expt_config_str=${expt_config_str}"
+#
+# Directory containing the pregenerated grid files.
+#
+DOMAIN_PREGEN_BASEDIR=\"${pregen_basedir}\""
 
   fi
 #
diff --git a/ush/machine/gaea.yaml b/ush/machine/gaea.yaml
index 07c070b978..8f16435cf9 100644
--- a/ush/machine/gaea.yaml
+++ b/ush/machine/gaea.yaml
@@ -8,6 +8,7 @@ platform:
   METPLUS_PATH: /usw/met/METplus/METplus-4.1.3
   MET_BIN_EXEC: bin
   MET_INSTALL_DIR: /usw/met/10.1.2
+  DOMAIN_PREGEN_BASEDIR: /lustre/f2/pdata/ncep_shared/UFS_SRW_App/develop/FV3LAM_pregen
   QUEUE_DEFAULT: normal
   QUEUE_FCST: normal
   QUEUE_HPSS: normal