diff --git a/parm/soca/berror/saber_blocks.yaml b/parm/soca/berror/saber_blocks.yaml
index d2d90fcd7..22a01dbf2 100644
--- a/parm/soca/berror/saber_blocks.yaml
+++ b/parm/soca/berror/saber_blocks.yaml
@@ -79,11 +79,15 @@ components:
             read local nicas: true
           model:
             do not cross mask boundaries: false
-            groups:
-            - group name: group 1
-              variables: [tocn, socn, uocn, vocn, ssh]
-            - group name: group 2
-              variables: [cicen, hicen, hsnon]
+#            groups:
+#            - group name: group 1
+#              variables: [tocn, socn, uocn, vocn, ssh]
+#            - group name: group 2
+#              variables: [cicen, hicen, hsnon]
 
   weight:
-    value: 0.5
+    read_from_file: 3
+    basename: ./
+    ocn_filename: 'ocn.ens_weights.incr.{{ATM_WINDOW_MIDDLE}}.nc'
+    ice_filename: 'ice.ens_weights.incr.{{ATM_WINDOW_MIDDLE}}.nc'
+    date: '{{ATM_WINDOW_MIDDLE}}'
diff --git a/parm/soca/berror/soca_ensweights.yaml b/parm/soca/berror/soca_ensweights.yaml
new file mode 100644
index 000000000..4e302a48b
--- /dev/null
+++ b/parm/soca/berror/soca_ensweights.yaml
@@ -0,0 +1,26 @@
+geometry:
+  mom6_input_nml: mom_input.nml
+  fields metadata: ./fields_metadata.yaml
+
+date: '{{ATM_WINDOW_MIDDLE}}'
+
+variables:
+  ice: [cicen, hicen, hsnon]
+  ocean: [tocn, socn, uocn, vocn, ssh]
+
+background:
+  date: '{{ATM_WINDOW_BEGIN}}'
+  basename: ./INPUT/
+  ocn_filename: MOM.res.nc
+  ice_filename: cice.res.nc
+  read_from_file: 1
+
+weights:
+  ice: 0.1
+  ocean: 0.5
+
+output:
+  datadir: ./
+  date: '{{ATM_WINDOW_MIDDLE}}'
+  exp: ens_weights
+  type: incr
diff --git a/scripts/exgdas_global_marine_analysis_bmat.sh b/scripts/exgdas_global_marine_analysis_bmat.sh
index 6cc8e0efe..0c6e27178 100755
--- a/scripts/exgdas_global_marine_analysis_bmat.sh
+++ b/scripts/exgdas_global_marine_analysis_bmat.sh
@@ -180,6 +180,14 @@ if [ ${#files[@]} -gt 0 ]; then
     shopt -u nullglob
 fi
 
+################################################################################
+# Write ensemble weights for the hybrid envar
+$APRUN_OCNANAL $JEDI_BIN/socahybridweights.x soca_ensweights.yaml
+export err=$?; err_chk
+if [ $err -gt 0  ]; then
+    exit $err
+fi
+
 ################################################################################
 # Set decorrelation scales for bump C
 $APRUN_OCNANAL $JEDI_BIN/soca_setcorscales.x soca_setcorscales.yaml
diff --git a/scripts/exgdas_global_marine_analysis_prep.py b/scripts/exgdas_global_marine_analysis_prep.py
index 2be745614..5391788a8 100755
--- a/scripts/exgdas_global_marine_analysis_prep.py
+++ b/scripts/exgdas_global_marine_analysis_prep.py
@@ -407,6 +407,13 @@ def find_clim_ens(input_date):
 config = Template.substitute_structure(config, TemplateConstants.DOLLAR_PARENTHESES, envconfig.get)
 config.save(berr_yaml)
 
+logging.info(f"---------------- generate soca_ensweights.yaml")
+berr_yaml = os.path.join(anl_dir, 'soca_ensweights.yaml')
+berr_yaml_template = os.path.join(berror_yaml_dir, 'soca_ensweights.yaml')
+config = YAMLFile(path=berr_yaml_template)
+config = Template.substitute_structure(config, TemplateConstants.DOUBLE_CURLY_BRACES, envconfig.get)
+config.save(berr_yaml)
+
 ################################################################################
 # copy yaml for decorrelation length scales
 
diff --git a/test/soca/gw/CMakeLists.txt b/test/soca/gw/CMakeLists.txt
index 4b48c7b6a..fd920a96b 100644
--- a/test/soca/gw/CMakeLists.txt
+++ b/test/soca/gw/CMakeLists.txt
@@ -40,8 +40,9 @@ set(jjob_list "JGDAS_GLOBAL_OCEAN_ANALYSIS_PREP"
 #              "JGDAS_GLOBAL_OCEAN_ANALYSIS_BMAT_VRFY"
               "JGDAS_GLOBAL_OCEAN_ANALYSIS_RUN"
               "JGDAS_GLOBAL_OCEAN_ANALYSIS_CHKPT"
-              "JGDAS_GLOBAL_OCEAN_ANALYSIS_POST")
+#              "JGDAS_GLOBAL_OCEAN_ANALYSIS_POST")
 #              "JGDAS_GLOBAL_OCEAN_ANALYSIS_VRFY")
+)
 
 set(setup "")
 foreach(jjob ${jjob_list})
@@ -62,3 +63,8 @@ foreach(jjob ${jjob_list})
   set(setup "--skip") # Only run the setup of the first test, if not, it will hang
                       # waiting for standard input from setup_expt.py
 endforeach()
+
+# Test hyb-weights app
+add_test(NAME test_gdasapp_hyb_weights
+  COMMAND ${PROJECT_BINARY_DIR}/bin/socahybridweights.x ${PROJECT_SOURCE_DIR}/test/testinput/soca_hybweights.yaml
+  WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/test/soca/gw/testrun/testjjobs/RUNDIRS/gdas_test/gdasocnanal_12)
diff --git a/test/testinput/soca_hybweights.yaml b/test/testinput/soca_hybweights.yaml
new file mode 100644
index 000000000..cdad1ab27
--- /dev/null
+++ b/test/testinput/soca_hybweights.yaml
@@ -0,0 +1,26 @@
+geometry:
+  mom6_input_nml: mom_input.nml
+  fields metadata: ./fields_metadata.yaml
+
+date: 2018-04-15T09:00:00Z
+
+variables:
+  ice: [cicen, hicen, hsnon]
+  ocean: [tocn, socn, uocn, vocn, ssh]
+
+background:
+  date: '2018-04-15T09:00:00Z'
+  basename: ./INPUT/
+  ocn_filename: MOM.res.nc
+  ice_filename: cice.res.nc
+  read_from_file: 1
+
+weights:
+  ice: 0.1
+  ocean: 0.5
+
+output:
+  datadir: ./
+  date: '2018-04-15T12:00:00Z'
+  exp: hybrid_weights
+  type: incr
diff --git a/utils/socahybridweights.cc b/utils/socahybridweights.cc
new file mode 100644
index 000000000..5869a090d
--- /dev/null
+++ b/utils/socahybridweights.cc
@@ -0,0 +1,8 @@
+#include "socahybridweights.h"
+#include "oops/runs/Run.h"
+
+int main(int argc,  char ** argv) {
+  oops::Run run(argc, argv);
+  gdasapp::SocaHybridWeights socahybridweights;
+  return run.execute(socahybridweights);
+}
diff --git a/utils/socahybridweights.h b/utils/socahybridweights.h
new file mode 100644
index 000000000..d6a52c357
--- /dev/null
+++ b/utils/socahybridweights.h
@@ -0,0 +1,86 @@
+#include <netcdf>
+#include <iostream>
+#include <filesystem>
+
+#include "eckit/config/LocalConfiguration.h"
+
+#include "atlas/field.h"
+
+#include "oops/base/PostProcessor.h"
+#include "oops/mpi/mpi.h"
+#include "oops/runs/Application.h"
+#include "oops/util/DateTime.h"
+#include "oops/util/Duration.h"
+#include "oops/util/Logger.h"
+
+#include "soca/State/State.h"
+#include "soca/Geometry/Geometry.h"
+#include "soca/Increment/Increment.h"
+
+namespace gdasapp {
+
+  class SocaHybridWeights : public oops::Application {
+   public:
+    explicit SocaHybridWeights(const eckit::mpi::Comm & comm = oops::mpi::world())
+      : Application(comm) {}
+    static const std::string classname() {return "gdasapp::SocaHybridWeights";}
+
+    int execute(const eckit::Configuration & fullConfig, bool /*validate*/) const {
+
+      /// Setup the soca geometry
+      const eckit::LocalConfiguration geomConfig(fullConfig, "geometry");
+      oops::Log::info() << "geometry: " << std::endl << geomConfig << std::endl;
+      const soca::Geometry geom(geomConfig, this->getComm());
+
+      /// Get the date
+      std::string strdt;
+      fullConfig.get("date", strdt);
+      util::DateTime dt = util::DateTime(strdt);
+
+      /// Get the list of variables
+      oops::Variables socaOcnVars(fullConfig, "variables.ocean");
+      oops::Variables socaIceVars(fullConfig, "variables.ice");
+      oops::Variables socaVars(socaIceVars);
+      socaVars += socaOcnVars;
+
+      /// Read the background
+      // TODO: Use the ice extent to set the weights ... no clue if this is
+      //       possible at this level
+      soca::State socaBkg(geom, socaVars, dt);
+      const eckit::LocalConfiguration socaBkgConfig(fullConfig, "background");
+      socaBkg.read(socaBkgConfig);
+      oops::Log::info() << "socaBkg: " << std::endl << socaBkg << std::endl;
+
+      /// Read weights
+      const eckit::LocalConfiguration socaHWConfig(fullConfig, "weights");
+      double wIce = socaHWConfig.getDouble("ice");
+      double wOcean = socaHWConfig.getDouble("ocean");
+      oops::Log::info() << "wIce: " << wIce << std::endl;
+      oops::Log::info() << "wOcean: " << wOcean << std::endl;
+
+      /// Create fields of weights for seaice
+      soca::Increment socaIceHW(geom, socaVars, dt); // ocean field is mandatory for writting
+      socaIceHW.ones();
+      socaIceHW *= wIce;
+      oops::Log::info() << "socaIceHW: " << std::endl << socaIceHW << std::endl;
+      const eckit::LocalConfiguration socaHWOutConfig(fullConfig, "output");
+      socaIceHW.write(socaHWOutConfig);
+
+      /// Create fields of weights for the ocean
+      soca::Increment socaOcnHW(geom, socaOcnVars, dt);
+      socaOcnHW.ones();
+      socaOcnHW *= wOcean;
+      oops::Log::info() << "socaOcnHW: " << std::endl << socaOcnHW << std::endl;
+      socaOcnHW.write(socaHWOutConfig);
+
+      return 0;
+    }
+    // -----------------------------------------------------------------------------
+   private:
+    std::string appname() const {
+      return "gdasapp::SocaHybridWeights";
+    }
+    // -----------------------------------------------------------------------------
+  };
+
+}  // namespace gdasapp
diff --git a/utils/socaincr2mom6.h b/utils/socaincr2mom6.h
index 01e109988..c644b4c01 100644
--- a/utils/socaincr2mom6.h
+++ b/utils/socaincr2mom6.h
@@ -13,7 +13,6 @@
 #include "oops/util/Duration.h"
 #include "oops/util/Logger.h"
 
-#include "soca/State/State.h"
 #include "soca/Geometry/Geometry.h"
 #include "soca/Increment/Increment.h"