diff --git a/scl.py b/scl.py
index c8d002e..c37f50c 100644
--- a/scl.py
+++ b/scl.py
@@ -326,7 +326,18 @@ with Session(engine) as session:
             existing_record = lookup_result.one()
             updated_properties = []
             updated_entries = []
-            if estimated_restoration_time != existing_record.estimated_restoration_time:
+
+            est_restoration_diff_mins = (
+                abs(
+                    (
+                        estimated_restoration_time
+                        - existing_record.estimated_restoration_time
+                    ).total_seconds()
+                )
+                / 60
+            )
+            # Only post if estimated restoration time has changed by 30m or more
+            if est_restoration_diff_mins >= 30:
                 existing_record.estimated_restoration_time = estimated_restoration_time
                 if estimated_restoration_time > datetime.now():
                     # New estimated restoration time is in the future, so likely to be a real time
@@ -421,6 +432,8 @@ with Session(engine) as session:
             print("Existing record not found")
             post_id = None
             map_media_post_id = None
+            neighborhood = None
+            city = None
             if not event_class["is_postable"]:
                 print(
                     "Outage is {} considered postable, will not post".format(
@@ -438,13 +451,11 @@ with Session(engine) as session:
                 post_id = initial_post_result["post_id"]
                 map_media_post_id = initial_post_result["map_media_post_id"]
 
-                neighborhood = str()
                 try:
                     neighborhood = initial_post_result["neighborhood"]
                 except KeyError:
                     pass
 
-                city = str()
                 try:
                     city = initial_post_result["city"]
                 except KeyError: