diff --git a/modules/deeplearning/cloud_fraction_fcn_abi.py b/modules/deeplearning/cloud_fraction_fcn_abi.py
index 77a6b96441792801b6eb40ba51591100a1736f98..87e04401fc42c79cee12dfcfa5eb8d8fc2691075 100644
--- a/modules/deeplearning/cloud_fraction_fcn_abi.py
+++ b/modules/deeplearning/cloud_fraction_fcn_abi.py
@@ -794,7 +794,7 @@ def run_evaluate_static(in_file, out_file, ckpt_dir):
 
     # Use this hack for now.
     off_earth = (bt <= 161.0)
-    cld_frac_out[off_earth] = np.nan
+    cld_frac_out[off_earth] = -1
 
     # ---  Make a DataArray ----------------------------------------------------
     # var_names = ['cloud_fraction', 'temp_11_0um', 'refl_0_65um']
@@ -857,7 +857,7 @@ def run_evaluate_static_full_disk(in_file, out_file, ckpt_dir):
 
     # Use this hack for now.
     off_earth = (bt <= 161.0)
-    cld_frac_out[off_earth] = np.nan
+    cld_frac_out[off_earth] = -1
 
     # ---   Make DataArray -------------------------------------------------
     # var_names = ['cloud_fraction', 'temp_11_0um', 'refl_0_65um']