diff --git a/lib/nexrad/storm.py b/lib/nexrad/storm.py
index 6ee6488..e83ae9a 100644
--- a/lib/nexrad/storm.py
+++ b/lib/nexrad/storm.py
@@ -76,10 +76,10 @@ def timezone_from_str(text: str) -> datetime.timezone:
     return datetime.UTC if tz is None else tz
 
 def coord_from_str(text_lon: str, text_lat: str):
-    lon = 0.0 if text_lon == '' else float(text_lon)
-    lat = 0.0 if text_lat == '' else float(text_lat)
+    if text_lon == '' or text_lat == '':
+        return
 
-    return Coord(lon, lat)
+    return Coord(float(text_lon), float(text_lat))
 
 class StormReport(DatabaseTable):
     __slots__ = (