diff --git a/modules/icing/util.py b/modules/icing/util.py
index 1ca87308fee09f808b4e55f8b077934a0bc54560..1f3e278bbe3aeda0d80ce85b5297042da5b862d0 100644
--- a/modules/icing/util.py
+++ b/modules/icing/util.py
@@ -1274,6 +1274,7 @@ def run_icing_predict_image(clvrx_dir='/Users/tomrink/data/clavrx/RadC/', output
         else:
             keep_lons = None
             keep_lats = None
+            keep_obs_intensity = None
 
         prob_s = []
         for flvl in flight_levels: