diff --git a/modules/icing/util.py b/modules/icing/util.py
index 6dedb02d7f26bd3772b50a704107fb572086658b..644a242ba1ede6d7f49ef33422941d916e699e17 100644
--- a/modules/icing/util.py
+++ b/modules/icing/util.py
@@ -90,13 +90,15 @@ def run_icing_predict(clvrx_dir='/Users/tomrink/data/clavrx/RadC/', output_dir=h
             lons_2d, lats_2d, x_rad, y_rad = get_lon_lat_2d_mesh(nav, ll, cc, offset=int(8 / res_fac))
 
         ancil_data_dct, _, _ = make_for_full_domain_predict(h5f, name_list=
-                            ['solar_zenith_angle', 'sensor_zenith_angle', 'cld_height_acha', 'cld_geo_thick'],
+                            ['solar_zenith_angle', 'sensor_zenith_angle', 'cld_height_acha', 'cld_geo_thick', 'temp_10_4um_nom'],
                             satellite=satellite, domain=domain, res_fac=res_fac)
 
         satzen = ancil_data_dct['sensor_zenith_angle']
         solzen = ancil_data_dct['solar_zenith_angle']
+        bt_10_4 = ancil_data_dct['temp_10_4um_nom']
         day_idxs = []
         nght_idxs = []
+        avg_bts = []
         for j in range(num_lines):
             for i in range(num_elems):
                 k = i + j*num_elems
@@ -106,6 +108,7 @@ def run_icing_predict(clvrx_dir='/Users/tomrink/data/clavrx/RadC/', output_dir=h
                     day_idxs.append(k)
                 else:
                     nght_idxs.append(k)
+                avg_bts.append(bt_10_4[k])
 
         num_tiles = num_lines * num_elems
         num_day_tiles = len(day_idxs)
@@ -176,7 +179,9 @@ def run_icing_predict(clvrx_dir='/Users/tomrink/data/clavrx/RadC/', output_dir=h
             preds_2d_dct[flvl] = fd_preds.reshape((num_lines, num_elems))
             probs_2d_dct[flvl] = fd_probs.reshape((num_lines, num_elems))
 
-        write_icing_file_nc4(clvrx_str_time, output_dir, preds_2d_dct, probs_2d_dct,
+        bt_10_4_2d = bt_10_4.reshape((num_lines, num_elems))
+
+        write_icing_file_nc4(clvrx_str_time, output_dir, preds_2d_dct, probs_2d_dct, bt_10_4_2d,
                              x_rad, y_rad, lons_2d, lats_2d, cc, ll,
                              satellite=satellite, domain=domain, use_nan=use_nan, has_time=has_time, prob_thresh=prob_thresh)