diff --git a/docs/Users_Guide/glossary.rst b/docs/Users_Guide/glossary.rst
index 841b8120e4..57261ddea4 100644
--- a/docs/Users_Guide/glossary.rst
+++ b/docs/Users_Guide/glossary.rst
@@ -8592,3 +8592,8 @@ METplus Configuration Glossary
      Specify the value for 'check_dup' in the MET configuration file for TCPairs.
 
      | *Used by:* TCPairs
+
+   TC_PAIRS_INTERP12
+     Specify the value for 'interp12' in the MET configuration file for TCPairs.
+
+     | *Used by:* TCPairs
diff --git a/docs/Users_Guide/wrappers.rst b/docs/Users_Guide/wrappers.rst
index 0ba0d84e4d..3d9a6e0020 100644
--- a/docs/Users_Guide/wrappers.rst
+++ b/docs/Users_Guide/wrappers.rst
@@ -7419,6 +7419,7 @@ METplus Configuration
 | :term:`TC_PAIRS_SKIP_LEAD_SEQ`
 | :term:`TC_PAIRS_RUN_ONCE`
 | :term:`TC_PAIRS_CHECK_DUP`
+| :term:`TC_PAIRS_INTERP12`
 |
 
 .. warning:: **DEPRECATED:**
@@ -7679,6 +7680,17 @@ see :ref:`How METplus controls MET config file settings<metplus-control-met>`.
    * - :term:`TC_PAIRS_CHECK_DUP`
      - check_dup
 
+**${METPLUS_INTERP12}**
+
+.. list-table::
+   :widths: 5 5
+   :header-rows: 0
+
+   * - METplus Config(s)
+     - MET Config File
+   * - :term:`TC_PAIRS_INTERP12`
+     - interp12
+
 .. _tcrmw_wrapper:
 
 TCRMW
diff --git a/internal_tests/pytests/tc_pairs/test_tc_pairs_wrapper.py b/internal_tests/pytests/tc_pairs/test_tc_pairs_wrapper.py
index 264f33d43c..a0845be227 100644
--- a/internal_tests/pytests/tc_pairs/test_tc_pairs_wrapper.py
+++ b/internal_tests/pytests/tc_pairs/test_tc_pairs_wrapper.py
@@ -364,6 +364,9 @@ def test_tc_pairs_storm_id_lists(metplus_config, config_overrides,
         # 18: check_dup
         ({'TC_PAIRS_CHECK_DUP': 'False', },
          {'METPLUS_CHECK_DUP': 'check_dup = FALSE;'}),
+        # 19: interp12
+        ({'TC_PAIRS_INTERP12': 'replace', },
+         {'METPLUS_INTERP12': 'interp12 = REPLACE;'}),
 
     ]
 )
diff --git a/metplus/util/doc_util.py b/metplus/util/doc_util.py
index cd17b4e4ae..72c6c89af5 100755
--- a/metplus/util/doc_util.py
+++ b/metplus/util/doc_util.py
@@ -180,7 +180,7 @@ def print_doc_text(tool_name, met_var, dict_items):
     print(f"\n\nIn docs/Users_Guide/wrappers.rst\n\n"
           f"Under {wrapper_camel} => "
           "MET Configuration section, add:\n"
-          "\n---------------------------------------------")
+          "\n---------------------------------------------\n")
     var_header = (f"**${{{env_var_name}}}**")
 
     list_table_text = (f"{var_header}\n\n"
@@ -201,7 +201,7 @@ def print_doc_text(tool_name, met_var, dict_items):
     print('\n==================================================\n')
     print(f"In docs/Users_Guide/glossary.rst"
           "\n\nAdd the following anywhere in the file:\n")
-    print("---------------------------------------------")
+    print("---------------------------------------------\n")
     for metplus_config_name, met_config_name in zip(metplus_config_names, met_config_values):
         glossary_entry = (f"   {metplus_config_name}\n"
                           f"     Specify the value for '{met_config_name}' "
diff --git a/metplus/wrappers/tc_pairs_wrapper.py b/metplus/wrappers/tc_pairs_wrapper.py
index 80e41720d2..3ace359a2f 100755
--- a/metplus/wrappers/tc_pairs_wrapper.py
+++ b/metplus/wrappers/tc_pairs_wrapper.py
@@ -60,6 +60,7 @@ class TCPairsWrapper(CommandBuilder):
         'METPLUS_VALID_INC',
         'METPLUS_VALID_EXC',
         'METPLUS_CHECK_DUP',
+        'METPLUS_INTERP12',
     ]
 
     WILDCARDS = {
@@ -171,6 +172,11 @@ def create_c_dict(self):
         self.add_met_config(name='check_dup',
                             data_type='bool')
 
+        self.add_met_config(name='interp12',
+                            data_type='string',
+                            extra_args={'remove_quotes': True,
+                                        'uppercase': True})
+
         # if looping by processes, get the init or valid beg time and run once
         c_dict['INPUT_DICT'] = self.get_start_time_input_dict()
 
diff --git a/parm/met_config/TCPairsConfig_wrapped b/parm/met_config/TCPairsConfig_wrapped
index f127c0bddf..67246863de 100644
--- a/parm/met_config/TCPairsConfig_wrapped
+++ b/parm/met_config/TCPairsConfig_wrapped
@@ -90,7 +90,8 @@ ${METPLUS_CHECK_DUP}
 // Specify special processing to be performed for interpolated models.
 // Set to NONE, FILL, or REPLACE.
 //
-interp12 = REPLACE;
+//interp12 =
+${METPLUS_INTERP12}
 
 //
 // Specify how consensus forecasts should be defined
diff --git a/parm/use_cases/met_tool_wrapper/TCPairs/TCPairs_extra_tropical.conf b/parm/use_cases/met_tool_wrapper/TCPairs/TCPairs_extra_tropical.conf
index 0941627b68..255d41c784 100644
--- a/parm/use_cases/met_tool_wrapper/TCPairs/TCPairs_extra_tropical.conf
+++ b/parm/use_cases/met_tool_wrapper/TCPairs/TCPairs_extra_tropical.conf
@@ -81,3 +81,5 @@ TC_PAIRS_MISSING_VAL = -9999
 #TC_PAIRS_CONSENSUS1_MIN_REQ =
 
 #TC_PAIRS_CHECK_DUP =
+
+#TC_PAIRS_INTERP12 =
diff --git a/parm/use_cases/met_tool_wrapper/TCPairs/TCPairs_tropical.conf b/parm/use_cases/met_tool_wrapper/TCPairs/TCPairs_tropical.conf
index 11c64a6835..2812a0cc16 100644
--- a/parm/use_cases/met_tool_wrapper/TCPairs/TCPairs_tropical.conf
+++ b/parm/use_cases/met_tool_wrapper/TCPairs/TCPairs_tropical.conf
@@ -77,3 +77,5 @@ TC_PAIRS_DLAND_FILE = MET_BASE/tc_data/dland_global_tenth_degree.nc
 #TC_PAIRS_CONSENSUS1_MIN_REQ =
 
 #TC_PAIRS_CHECK_DUP =
+
+#TC_PAIRS_INTERP12 =