diff --git a/test/source/scwx/awips/coded_location.test.cpp b/test/source/scwx/awips/coded_location.test.cpp
index a3ef5e80..00caa845 100644
--- a/test/source/scwx/awips/coded_location.test.cpp
+++ b/test/source/scwx/awips/coded_location.test.cpp
@@ -195,5 +195,38 @@ TEST(CodedLocation, NCMaine)
    EXPECT_DOUBLE_EQ(coordinates[12].longitude_, -69.21);
 }
 
+TEST(CodedLocation, InvalidNC)
+{
+   std::vector<std::string> data = {
+      "LAT...LON 47316870 4721679 46466767 45436766 44756779",
+      "      44216834 43816943 43706970 43837006 44497009",
+      "      45306974 46356946 46976921"};
+
+   CodedLocation location;
+   bool          dataValid = location.Parse(data);
+
+   EXPECT_EQ(dataValid, false);
+}
+
+TEST(CodedLocation, EmptyData)
+{
+   std::vector<std::string> data = {};
+
+   CodedLocation location;
+   bool          dataValid = location.Parse(data);
+
+   EXPECT_EQ(dataValid, false);
+}
+
+TEST(CodedLocation, MalformedData)
+{
+   std::vector<std::string> data = {"LAT...LON 1360"};
+
+   CodedLocation location;
+   bool          dataValid = location.Parse(data);
+
+   EXPECT_EQ(dataValid, false);
+}
+
 } // namespace awips
 } // namespace scwx
diff --git a/test/source/scwx/awips/coded_time_motion_location.test.cpp b/test/source/scwx/awips/coded_time_motion_location.test.cpp
index 931de2d2..8c09bcb4 100644
--- a/test/source/scwx/awips/coded_time_motion_location.test.cpp
+++ b/test/source/scwx/awips/coded_time_motion_location.test.cpp
@@ -86,5 +86,25 @@ TEST(CodedTimeMotionLocation, TwoCoordinates)
    EXPECT_DOUBLE_EQ(coordinates[1].longitude_, -81.98);
 }
 
+TEST(CodedTimeMotionLocation, EmptyData)
+{
+   std::vector<std::string> data = {};
+
+   CodedTimeMotionLocation tml;
+   bool                    dataValid = tml.Parse(data);
+
+   EXPECT_EQ(dataValid, false);
+}
+
+TEST(CodedTimeMotionLocation, MalformedData)
+{
+   std::vector<std::string> data = {"TIME...MOT...LOC 2113Z 345DEG 42KT 2760"};
+
+   CodedTimeMotionLocation tml;
+   bool                    dataValid = tml.Parse(data);
+
+   EXPECT_EQ(dataValid, false);
+}
+
 } // namespace awips
 } // namespace scwx
diff --git a/wxdata/source/scwx/awips/coded_location.cpp b/wxdata/source/scwx/awips/coded_location.cpp
index f70b1fb7..d1bea57f 100644
--- a/wxdata/source/scwx/awips/coded_location.cpp
+++ b/wxdata/source/scwx/awips/coded_location.cpp
@@ -114,6 +114,11 @@ bool CodedLocation::Parse(const StringRange& lines, const std::string& wfo)
          {
             if (token->size() != 8)
             {
+               BOOST_LOG_TRIVIAL(warning)
+                  << logPrefix_
+                  << "Invalid National Center LAT...LON format: \"" << *token
+                  << "\"";
+
                dataValid = false;
                break;
             }
@@ -137,6 +142,27 @@ bool CodedLocation::Parse(const StringRange& lines, const std::string& wfo)
          }
       }
    }
+   else
+   {
+      if (tokenList.empty())
+      {
+         BOOST_LOG_TRIVIAL(warning) << logPrefix_ << "LAT...LON not found";
+      }
+      else
+      {
+         BOOST_LOG_TRIVIAL(warning)
+            << logPrefix_
+            << "Malformed LAT...LON tokens: (0: " << tokenList.at(0)
+            << ", size: " << tokenList.size() << ")";
+
+         for (const auto& token : tokenList)
+         {
+            BOOST_LOG_TRIVIAL(debug) << logPrefix_ << token;
+         }
+      }
+
+      dataValid = false;
+   }
 
    if (dataValid)
    {
diff --git a/wxdata/source/scwx/awips/coded_time_motion_location.cpp b/wxdata/source/scwx/awips/coded_time_motion_location.cpp
index 054404f3..4e70afae 100644
--- a/wxdata/source/scwx/awips/coded_time_motion_location.cpp
+++ b/wxdata/source/scwx/awips/coded_time_motion_location.cpp
@@ -175,6 +175,28 @@ bool CodedTimeMotionLocation::Parse(const StringRange& lines,
          }
       }
    }
+   else
+   {
+      if (tokenList.empty())
+      {
+         BOOST_LOG_TRIVIAL(warning)
+            << logPrefix_ << "TIME...MOT...LOC not found";
+      }
+      else
+      {
+         BOOST_LOG_TRIVIAL(warning)
+            << logPrefix_
+            << "Malformed TIME...MOT...LOC tokens: (0: " << tokenList.at(0)
+            << ", size: " << tokenList.size() << ")";
+
+         for (const auto& token : tokenList)
+         {
+            BOOST_LOG_TRIVIAL(debug) << logPrefix_ << token;
+         }
+      }
+
+      dataValid = false;
+   }
 
    return dataValid;
 }