diff --git a/var/spack/repos/builtin/packages/grib-api/cmake_install_rpath.patch b/var/spack/repos/builtin/packages/grib-api/cmake_install_rpath.patch
new file mode 100644
index 0000000000000000000000000000000000000000..7e2b2508837bead7030bd4eae48c968ff5f526c2
--- /dev/null
+++ b/var/spack/repos/builtin/packages/grib-api/cmake_install_rpath.patch
@@ -0,0 +1,11 @@
+--- a/cmake/ecbuild_append_to_rpath.cmake
++++ b/cmake/ecbuild_append_to_rpath.cmake
+@@ -31,7 +31,7 @@ function( _path_append var path )
+ 	else()
+ 		list( FIND ${var} ${path} _found )
+ 		if( _found EQUAL "-1" )
+-			set( ${var} "${${var}}:${path}" PARENT_SCOPE )
++			set( ${var} "${${var}};${path}" PARENT_SCOPE )
+ 		endif()
+ 	endif()
+ endfunction()
diff --git a/var/spack/repos/builtin/packages/grib-api/disable_numpy.patch b/var/spack/repos/builtin/packages/grib-api/disable_numpy.patch
new file mode 100644
index 0000000000000000000000000000000000000000..c056388da835373bd9d28725634e2c486bce89b6
--- /dev/null
+++ b/var/spack/repos/builtin/packages/grib-api/disable_numpy.patch
@@ -0,0 +1,12 @@
+--- a/python/CMakeLists.txt
++++ b/python/CMakeLists.txt
+@@ -6,7 +6,8 @@ if( HAVE_PYTHON )
+     #endif()
+ 
+     # check for Numpy
+-    find_package( NumPy )
++    # find_package( NumPy )
++    set(NUMPY_FOUND FALSE)
+ 
+     ###############################################################################
+     # swig python interface
diff --git a/var/spack/repos/builtin/packages/grib-api/enable_only_jasper.patch b/var/spack/repos/builtin/packages/grib-api/enable_only_jasper.patch
new file mode 100644
index 0000000000000000000000000000000000000000..06e9790f59d289980954a88309ed1f215192790c
--- /dev/null
+++ b/var/spack/repos/builtin/packages/grib-api/enable_only_jasper.patch
@@ -0,0 +1,34 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -106,18 +106,7 @@ set( HAVE_LIBOPENJPEG 0 )
+ 
+ if( ENABLE_JPG )
+ 
+-    # Note: This is a deprecated feature but we need it to find Jasper at ECMWF.
+-    #       ecbuild_add_extra_search_paths modifies CMAKE_PREFIX_PATH
+-    #       which can affect future package discovery if not undone by the caller.
+-    #       The current CMAKE_PREFIX_PATH is backed up as _CMAKE_PREFIX_PATH
+-    #
+-    set(CMAKE_WARN_DEPRECATED OFF) # Suppress deprecation message
+-    ecbuild_add_extra_search_paths( jasper )
+     find_package( Jasper )
+-    set(CMAKE_PREFIX_PATH ${_CMAKE_PREFIX_PATH})    # Restore CMAKE_PREFIX_PATH
+-    set(CMAKE_WARN_DEPRECATED ON)  # Remove suppression
+-
+-    find_package( OpenJPEG )
+ 
+     if( JASPER_FOUND )
+         list( APPEND GRIB_API_TPLS Jasper )
+@@ -125,12 +114,6 @@ if( ENABLE_JPG )
+         set( HAVE_LIBJASPER 1 )
+     endif()
+ 
+-    if( OPENJPEG_FOUND )
+-        list( APPEND GRIB_API_TPLS OpenJPEG )
+-        set( HAVE_JPEG 1 )
+-        set( HAVE_LIBOPENJPEG 1 )
+-    endif()
+-
+ endif()
+ 
+ 
diff --git a/var/spack/repos/builtin/packages/grib-api/enable_only_openjpeg.patch b/var/spack/repos/builtin/packages/grib-api/enable_only_openjpeg.patch
new file mode 100644
index 0000000000000000000000000000000000000000..a4404770294c9dccfe933bb5beb20ff33c872ee3
--- /dev/null
+++ b/var/spack/repos/builtin/packages/grib-api/enable_only_openjpeg.patch
@@ -0,0 +1,28 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -106,25 +106,8 @@ set( HAVE_LIBOPENJPEG 0 )
+ 
+ if( ENABLE_JPG )
+ 
+-    # Note: This is a deprecated feature but we need it to find Jasper at ECMWF.
+-    #       ecbuild_add_extra_search_paths modifies CMAKE_PREFIX_PATH
+-    #       which can affect future package discovery if not undone by the caller.
+-    #       The current CMAKE_PREFIX_PATH is backed up as _CMAKE_PREFIX_PATH
+-    #
+-    set(CMAKE_WARN_DEPRECATED OFF) # Suppress deprecation message
+-    ecbuild_add_extra_search_paths( jasper )
+-    find_package( Jasper )
+-    set(CMAKE_PREFIX_PATH ${_CMAKE_PREFIX_PATH})    # Restore CMAKE_PREFIX_PATH
+-    set(CMAKE_WARN_DEPRECATED ON)  # Remove suppression
+-
+     find_package( OpenJPEG )
+ 
+-    if( JASPER_FOUND )
+-        list( APPEND GRIB_API_TPLS Jasper )
+-        set( HAVE_JPEG 1 )
+-        set( HAVE_LIBJASPER 1 )
+-    endif()
+-
+     if( OPENJPEG_FOUND )
+         list( APPEND GRIB_API_TPLS OpenJPEG )
+         set( HAVE_JPEG 1 )
diff --git a/var/spack/repos/builtin/packages/grib-api/package.py b/var/spack/repos/builtin/packages/grib-api/package.py
index 5da851c1ba220204c07f3acc8287aa5195020392..3e23a7e4fd7044ecc0921b0a870a035557180cdc 100644
--- a/var/spack/repos/builtin/packages/grib-api/package.py
+++ b/var/spack/repos/builtin/packages/grib-api/package.py
@@ -30,51 +30,122 @@ class GribApi(CMakePackage):
        C, FORTRAN and Python programs developed for encoding and decoding WMO
        FM-92 GRIB edition 1 and edition 2 messages."""
 
-    homepage = "https://software.ecmwf.int/wiki/display/GRIB/Home"
-    url      = "https://software.ecmwf.int/wiki/download/attachments/3473437/grib_api-1.17.0-Source.tar.gz"
+    homepage = 'https://software.ecmwf.int/wiki/display/GRIB/Home'
+    url = 'https://software.ecmwf.int/wiki/download/attachments/3473437/grib_api-1.17.0-Source.tar.gz?api=v2'
+    list_url = 'https://software.ecmwf.int/wiki/display/GRIB/Releases'
 
+    maintainers = ['skosukhin']
+
+    version('1.24.0', 'dcc549069cdeeaa1959732c36ab3136f')
     version('1.21.0', 'eb64c5eb72e6e90841237cba9d644016')
     version('1.17.0', 'bca7114d2c3100501a08190a146818d2')
     version('1.16.0', '8c7fdee03344e4379d400ae20976a460')
 
-    variant('netcdf', default=False, description='Enable netcdf encoding/decoding using netcdf library')
-    variant('jpeg', default=True, description='Enable jpeg 2000 for grib 2 decoding/encoding')
-    variant('png', default=False, description='Enable png for decoding/encoding')
+    variant('netcdf', default=False,
+            description='Enable netcdf encoding/decoding using netcdf library')
+    variant('jp2k', default='openjpeg', values=('openjpeg', 'jasper', 'none'),
+            description='Specify JPEG2000 decoding/encoding backend')
+    variant('png', default=False,
+            description='Enable png for decoding/encoding')
+    variant('aec', default=False,
+            description='Enable Adaptive Entropy Coding for decoding/encoding')
+    variant('pthreads', default=False,
+            description='Enable POSIX threads')
+    variant('openmp', default=False,
+            description='Enable OpenMP threads')
+    variant('python', default=False,
+            description='Enable the Python interface')
+    variant('numpy', default=False,
+            description='Enable numpy support in the Python interface')
+    variant('fortran', default=False, description='Enable the Fortran support')
+    variant('examples', default=True,
+            description='Build the examples (part of the full test suite)')
+    variant('test', default=True, description='Enable the tests')
     variant('build_type', default='RelWithDebInfo',
             description='The build type to build',
             values=('Debug', 'Release', 'RelWithDebInfo', 'Production'))
 
-    depends_on('libpng', when='+png')
+    # The building script tries to find an optional package valgrind when
+    # tests are enabled but the testing scripts don't use it.
+    # depends_on('valgrind', type='test', when='+test')
+
     depends_on('netcdf', when='+netcdf')
-    depends_on('jasper', when='+jpeg')
-    depends_on('cmake@2.8.11:', type='build')
+    depends_on('openjpeg@1.5.0:1.5.999', when='jp2k=openjpeg')
+    depends_on('jasper', when='jp2k=jasper')
+    depends_on('libpng', when='+png')
+    depends_on('libaec', when='+aec')
+    depends_on('python@2.5:2.999', when='+python',
+               type=('build', 'link', 'run'))
+    depends_on('py-numpy', when='+python+numpy', type=('build', 'run'))
+    extends('python', when='+python')
 
-    def cmake_args(self):
-        spec = self.spec
-        args = ['-DBUILD_SHARED_LIBS=BOTH']
+    conflicts('+openmp', when='+pthreads',
+              msg='Cannot enable both POSIX threads and OMP')
+    conflicts('+numpy', when='~python',
+              msg='Numpy variant is valid only when the Python interface is '
+                  'enabled')
+
+    # The following enforces linking against the specified JPEG2000 backend.
+    patch('enable_only_openjpeg.patch', when='jp2k=openjpeg')
+    patch('enable_only_jasper.patch', when='jp2k=jasper')
+
+    # Disable NumPy even if it's available.
+    patch('disable_numpy.patch', when='+python~numpy')
+
+    # CMAKE_INSTALL_RPATH must be a semicolon-separated list.
+    patch('cmake_install_rpath.patch')
+
+    @run_before('cmake')
+    def check_fortran(self):
+        if '+fortran' in self.spec and self.compiler.fc is None:
+            raise InstallError(
+                'Fortran interface requires a Fortran compiler!')
 
-        # We will add python support later.
-        args.append('-DENABLE_PYTHON=OFF')
+    def cmake_args(self):
+        var_opt_list = [('+pthreads', 'GRIB_THREADS'),
+                        ('+openmp', 'GRIB_OMP_THREADS'),
+                        ('+python', 'PYTHON'),
+                        ('+fortran', 'FORTRAN'),
+                        ('+examples', 'EXAMPLES'),
+                        ('+test', 'TESTS')]
 
-        # Disable FORTRAN interface if we don't have it.
-        if (self.compiler.f77 is None) or (self.compiler.fc is None):
-            args.append('-DENABLE_FORTRAN=OFF')
+        args = ['-DENABLE_%s=%s' % (opt, 'ON' if var in self.spec else 'OFF')
+                for var, opt in var_opt_list]
 
-        if '+netcdf' in spec:
-            args.append('-DENABLE_NETCDF=ON')
-            args.append('-DNETCDF_PATH=%s' % spec['netcdf'].prefix)
+        if '+netcdf' in self.spec:
+            args.extend(['-DENABLE_NETCDF=ON',
+                         # Prevent overriding by environment variable
+                         # HDF5_ROOT.
+                         '-DHDF5_ROOT=' + self.spec['hdf5'].prefix,
+                         # Prevent possible overriding by environment variables
+                         # NETCDF_ROOT, NETCDF_DIR, and NETCDF_PATH.
+                         '-DNETCDF_PATH=' + self.spec['netcdf'].prefix])
         else:
             args.append('-DENABLE_NETCDF=OFF')
 
-        if '+jpeg' in spec:
-            args.append('-DENABLE_JPG=ON')
-            args.append('-DJASPER_PATH=%s' % spec['jasper'].prefix)
-        else:
+        if self.spec.variants['jp2k'].value == 'none':
             args.append('-DENABLE_JPG=OFF')
+        else:
+            args.append('-DENABLE_JPG=ON')
 
-        if '+png' in spec:
-            args.append('-DENABLE_PNG=ON')
+        if self.spec.variants['jp2k'].value == 'openjpeg':
+            args.append('-DOPENJPEG_PATH=' + self.spec['openjpeg'].prefix)
+
+        if '+png' in self.spec:
+            args.extend(['-DENABLE_PNG=ON',
+                         '-DZLIB_ROOT=' + self.spec['zlib'].prefix])
         else:
             args.append('-DENABLE_PNG=OFF')
 
+        if '+aec' in self.spec:
+            args.extend(['-DENABLE_AEC=ON',
+                         # Prevent overriding by environment variables
+                         # AEC_DIR and AEC_PATH.
+                         '-DAEC_DIR=' + self.spec['libaec'].prefix])
+        else:
+            args.append('-DENABLE_AEC=OFF')
+
+        if '^python' in self.spec:
+            args.append('-DPYTHON_EXECUTABLE:FILEPATH=' + python.path)
+
         return args