diff --git a/src/plugins/weatherdata/gfs/g2clib/compack.c b/src/plugins/weatherdata/gfs/g2clib/compack.c
index 50fb01f64..d58636f49 100644
--- a/src/plugins/weatherdata/gfs/g2clib/compack.c
+++ b/src/plugins/weatherdata/gfs/g2clib/compack.c
@@ -67,7 +67,7 @@ void compack(g2float *fld,g2int ndpts,g2int idrsnum,g2int *idrstmpl,
       static g2int zero=0;
       g2int  *ifld,*gref,*glen,*gwidth;
       g2int  *jmin, *jmax, *lbit;
-      g2int  i,j,n,nbits,imin,imax,left;
+      g2int  i,j,n,imin,imax,left;
       g2int  isd,itemp,ilmax,ngwidthref=0,nbitsgwidth=0;
       g2int  nglenref=0,nglenlast=0,iofst,ival1,ival2;
       g2int  minsd,nbitsd=0,maxorig,nbitorig,ngroups;
@@ -385,7 +385,6 @@ void compack(g2float *fld,g2int ndpts,g2int idrsnum,g2int *idrstmpl,
         if ( glen!=0 ) free(glen);
       }
       else {          //   Constant field ( max = min )
-        nbits=0;
         *lcpack=0;
         nbitsgref=0;
         ngroups=0;
diff --git a/src/plugins/weatherdata/gfs/g2clib/dec_jpeg2000.c b/src/plugins/weatherdata/gfs/g2clib/dec_jpeg2000.c
index 8bffbfe2f..4fa926474 100644
--- a/src/plugins/weatherdata/gfs/g2clib/dec_jpeg2000.c
+++ b/src/plugins/weatherdata/gfs/g2clib/dec_jpeg2000.c
@@ -50,7 +50,6 @@
 *$$$*/
 
 {
-    int ier;
     g2int i,j,k;
     jas_image_t *image=0;
     jas_stream_t *jpcstream;
@@ -60,7 +59,6 @@
 
 //    jas_init();
 
-    ier=0;
 //   
 //     Create jas_stream_t containing input JPEG200 codestream in memory.
 //       
@@ -133,7 +131,7 @@
 //     Clean up JasPer work structures.
 //
     jas_matrix_destroy(data);
-    ier=jas_stream_close(jpcstream);
+    jas_stream_close(jpcstream);
     jas_image_destroy(image);
 
     return 0;
diff --git a/src/plugins/weatherdata/gfs/g2clib/enc_jpeg2000.c b/src/plugins/weatherdata/gfs/g2clib/enc_jpeg2000.c
index 8d0359a33..5c2fb3089 100644
--- a/src/plugins/weatherdata/gfs/g2clib/enc_jpeg2000.c
+++ b/src/plugins/weatherdata/gfs/g2clib/enc_jpeg2000.c
@@ -167,8 +167,8 @@ int enc_jpeg2000(unsigned char *cin,g2int width,g2int height,g2int nbits,
 //     Clean up JasPer work structures.
 //    
     rwcnt=jpcstream->rwcnt_;
-    ier=jas_stream_close(istream);
-    ier=jas_stream_close(jpcstream);
+    jas_stream_close(istream);
+    jas_stream_close(jpcstream);
 //
 //      Return size of jpeg2000 code stream
 //
diff --git a/src/plugins/weatherdata/gfs/g2clib/enc_png.c b/src/plugins/weatherdata/gfs/g2clib/enc_png.c
index c3f75bd4c..96284ef6e 100644
--- a/src/plugins/weatherdata/gfs/g2clib/enc_png.c
+++ b/src/plugins/weatherdata/gfs/g2clib/enc_png.c
@@ -43,8 +43,6 @@ void user_flush_data(png_structp png_ptr)
         Dummy Custom flush function
 */
 {
-   int *do_nothing;
-   do_nothing=NULL;
 }
 
 
diff --git a/src/plugins/weatherdata/gfs/g2clib/g2_addfield.c b/src/plugins/weatherdata/gfs/g2clib/g2_addfield.c
index 14a0301b0..a7893a3ec 100644
--- a/src/plugins/weatherdata/gfs/g2clib/g2_addfield.c
+++ b/src/plugins/weatherdata/gfs/g2clib/g2_addfield.c
@@ -131,10 +131,16 @@ g2int g2_addfield(unsigned char *cgrib,g2int ipdsnum,g2int *ipdstmpl,
       g2int   lensec4,lensec5,lensec6,lensec7;
       g2int   issec3,isprevbmap,lpos3=0,JJ,KK,MM;
       g2int   *coordieee;
-      g2int   width,height,iscan,itemp;
+      g2int   width=0,height=0,iscan=0,itemp=0;
       g2float *pfld;
       gtemplate  *mappds,*mapdrs;
       unsigned int allones=4294967295u;
+
+      (void) width;
+      (void) height;
+      (void) iscan;
+      (void) itemp;
+      (void) allones;
  
       ierr=0;
 //
diff --git a/src/plugins/weatherdata/gfs/g2clib/g2_getfld.c b/src/plugins/weatherdata/gfs/g2clib/g2_getfld.c
index 2bfb1cfd8..d4935ad9f 100644
--- a/src/plugins/weatherdata/gfs/g2clib/g2_getfld.c
+++ b/src/plugins/weatherdata/gfs/g2clib/g2_getfld.c
@@ -340,7 +340,6 @@ g2int g2_getfld(unsigned char *cgrib,g2int ifldnum,g2int unpack,g2int expand,
           break;
         }
         //     Get length of Section and Section number
-        iofst=(ipos-1)*8;
         iofst=ipos*8;
         gbit(cgrib,&lensec,iofst,32);        // Get Length of Section
         iofst=iofst+32;
diff --git a/src/plugins/weatherdata/gfs/g2clib/g2_unpack3.c b/src/plugins/weatherdata/gfs/g2clib/g2_unpack3.c
index 0b691127f..2d97bb676 100644
--- a/src/plugins/weatherdata/gfs/g2clib/g2_unpack3.c
+++ b/src/plugins/weatherdata/gfs/g2clib/g2_unpack3.c
@@ -119,7 +119,6 @@ g2int g2_unpack3(unsigned char *cgrib,g2int *iofst,g2int **igds,g2int **igdstmpl
         //   corresponding entries in array mapgrid.
         //
         if (*mapgridlen > 0) {
-           ligdstmpl=0;
            ligdstmpl=(g2int *)calloc(*mapgridlen,sizeof(g2int));
            if (ligdstmpl == 0) {
               ierr=6;
diff --git a/src/plugins/weatherdata/gfs/g2clib/jpcunpack.c b/src/plugins/weatherdata/gfs/g2clib/jpcunpack.c
index d3744ba90..b7790d03b 100644
--- a/src/plugins/weatherdata/gfs/g2clib/jpcunpack.c
+++ b/src/plugins/weatherdata/gfs/g2clib/jpcunpack.c
@@ -40,7 +40,7 @@ g2int jpcunpack(unsigned char *cpack,g2int len,g2int *idrstmpl,g2int ndpts,
 {
 
       g2int  *ifld;
-      g2int  j,nbits,iret;
+      g2int  j,nbits;
       g2float  ref,bscale,dscale;
 
       rdieee(idrstmpl+0,&ref,1);
@@ -58,7 +58,7 @@ g2int jpcunpack(unsigned char *cpack,g2int len,g2int *idrstmpl,g2int ndpts,
             fprintf(stderr,"Could not allocate space in jpcunpack.\n  Data field NOT upacked.\n");
             return(1);
          }
-         iret=(g2int)dec_jpeg2000(cpack,len,ifld);
+         dec_jpeg2000(cpack,len,ifld);
          for (j=0;j<ndpts;j++) {
            fld[j]=(((g2float)ifld[j]*bscale)+ref)*dscale;
          }
diff --git a/src/plugins/weatherdata/gfs/g2clib/misspack.c b/src/plugins/weatherdata/gfs/g2clib/misspack.c
index e631ddd5c..511e6bfd1 100644
--- a/src/plugins/weatherdata/gfs/g2clib/misspack.c
+++ b/src/plugins/weatherdata/gfs/g2clib/misspack.c
@@ -80,6 +80,8 @@ void misspack(g2float *fld,g2int ndpts,g2int idrsnum,g2int *idrstmpl,
       static g2int simple_alg = 0;
       static g2float alog2=0.69314718;       //  ln(2.0)
       static g2int one=1;
+
+      (void) ij;
       
       bscale=int_power(2.0,-idrstmpl[1]);
       dscale=int_power(10.0,idrstmpl[2]);
diff --git a/src/plugins/weatherdata/gfs/g2clib/mkieee.c b/src/plugins/weatherdata/gfs/g2clib/mkieee.c
index 2cac99153..a14afca6a 100644
--- a/src/plugins/weatherdata/gfs/g2clib/mkieee.c
+++ b/src/plugins/weatherdata/gfs/g2clib/mkieee.c
@@ -36,7 +36,8 @@ void mkieee(g2float *a,g2int *rieee,g2int num)
 {
 
       g2int  j,n,ieee,iexp,imant;
-      double  alog2,atemp;
+      //double  alog2,atemp;
+      double  atemp;
 
       static double  two23,two126;
       static g2int test=0;
@@ -50,7 +51,7 @@ void mkieee(g2float *a,g2int *rieee,g2int num)
          test=1;
       }
 
-      alog2=0.69314718;       //  ln(2.0)
+      //alog2=0.69314718;       //  ln(2.0)
 
       for (j=0;j<num;j++) {
       
diff --git a/src/plugins/weatherdata/gfs/g2clib/pngunpack.c b/src/plugins/weatherdata/gfs/g2clib/pngunpack.c
index 407a358ec..6f269af2b 100644
--- a/src/plugins/weatherdata/gfs/g2clib/pngunpack.c
+++ b/src/plugins/weatherdata/gfs/g2clib/pngunpack.c
@@ -40,7 +40,7 @@ g2int pngunpack(unsigned char *cpack,g2int len,g2int *idrstmpl,g2int ndpts,
 {
 
       g2int  *ifld;
-      g2int  j,nbits,iret,width,height;
+      g2int  j,nbits,width,height;
       g2float  ref,bscale,dscale;
       unsigned char *ctemp;
 
@@ -60,7 +60,7 @@ g2int pngunpack(unsigned char *cpack,g2int len,g2int *idrstmpl,g2int ndpts,
             fprintf(stderr,"Could not allocate space in jpcunpack.\n  Data field NOT upacked.\n");
             return(1);
          }
-         iret=(g2int)dec_png(cpack,&width,&height,ctemp);
+         dec_png(cpack,&width,&height,ctemp);
          gbits(ctemp,ifld,0,nbits,0,ndpts);
          for (j=0;j<ndpts;j++) {
            fld[j]=(((g2float)ifld[j]*bscale)+ref)*dscale;
diff --git a/src/plugins/weatherdata/gfs/g2clib/reduce.c b/src/plugins/weatherdata/gfs/g2clib/reduce.c
index b1c3502c5..5f597e5e1 100644
--- a/src/plugins/weatherdata/gfs/g2clib/reduce.c
+++ b/src/plugins/weatherdata/gfs/g2clib/reduce.c
@@ -37,6 +37,8 @@ typedef g2float real;
 	     ntotbt[31], ntotpr, newboxt;
     integer *newbox, *newboxp;
 
+    (void) kfildo;
+    (void) nboxj;
 
 /*        NOVEMBER 2001   GLAHN   TDL   GRIB2 */
 /*        MARCH    2002   GLAHN   COMMENT IER = 715 */
diff --git a/src/plugins/weatherdata/gfs/g2clib/seekgb.c b/src/plugins/weatherdata/gfs/g2clib/seekgb.c
index 69cf66cc9..d7b611ff1 100644
--- a/src/plugins/weatherdata/gfs/g2clib/seekgb.c
+++ b/src/plugins/weatherdata/gfs/g2clib/seekgb.c
@@ -35,7 +35,6 @@ void seekgb(FILE *lugb,g2int iseek,g2int mseek,g2int *lskip,g2int *lgrib)
 //
 //$$$
 {
-      g2int  ret;
       g2int k,k4,ipos,nread,lim,start,vers,lengrib;
       int    end;
       unsigned char *cbuf;
@@ -53,7 +52,7 @@ void seekgb(FILE *lugb,g2int iseek,g2int mseek,g2int *lskip,g2int *lgrib)
 
 //  READ PARTIAL SECTION
 
-        ret=fseek(lugb,ipos,SEEK_SET);
+        fseek(lugb,ipos,SEEK_SET);
         nread=fread(cbuf,sizeof(unsigned char),mseek,lugb);
         lim=nread-8;
 
@@ -66,7 +65,7 @@ void seekgb(FILE *lugb,g2int iseek,g2int mseek,g2int *lskip,g2int *lgrib)
 //  LOOK FOR '7777' AT END OF GRIB MESSAGE
             if (vers == 1) gbit(cbuf,&lengrib,(k+4)*8,3*8);
             if (vers == 2) gbit(cbuf,&lengrib,(k+12)*8,4*8);
-            ret=fseek(lugb,ipos+k+lengrib-4,SEEK_SET);
+            fseek(lugb,ipos+k+lengrib-4,SEEK_SET);
 //          Hard code to 4 instead of sizeof(g2int)
             k4=fread(&end,4,1,lugb);
             if (k4 == 1 && end == 926365495) {      //GRIB message found
diff --git a/src/plugins/weatherdata/gfs/g2clib/simunpack.c b/src/plugins/weatherdata/gfs/g2clib/simunpack.c
index 8bc0ddb29..fe8ccc3b1 100644
--- a/src/plugins/weatherdata/gfs/g2clib/simunpack.c
+++ b/src/plugins/weatherdata/gfs/g2clib/simunpack.c
@@ -39,15 +39,13 @@ g2int simunpack(unsigned char *cpack,g2int *idrstmpl,g2int ndpts,g2float *fld)
 {
 
       g2int  *ifld;
-      g2int  j,nbits,itype;
+      g2int  j,nbits;
       g2float ref,bscale,dscale;
-
       
       rdieee(idrstmpl+0,&ref,1);
       bscale = int_power(2.0,idrstmpl[1]);
       dscale = int_power(10.0,-idrstmpl[2]);
       nbits = idrstmpl[3];
-      itype = idrstmpl[4];
 
       ifld=(g2int *)calloc((ndpts ? ndpts : 1),sizeof(g2int));
       if ( ifld == 0 ) {
diff --git a/src/plugins/weatherdata/gfs/g2clib/specpack.c b/src/plugins/weatherdata/gfs/g2clib/specpack.c
index 66c16f01d..785bfbcbb 100644
--- a/src/plugins/weatherdata/gfs/g2clib/specpack.c
+++ b/src/plugins/weatherdata/gfs/g2clib/specpack.c
@@ -43,12 +43,12 @@ void specpack(g2float *fld,g2int ndpts,g2int JJ,g2int KK,g2int MM,
 {
 
       g2int    *ifld,tmplsim[5];
-      g2float  bscale,dscale,*unpk,*tfld;
+      g2float  *unpk,*tfld;
       g2float  *pscale,tscale;
       g2int    Js,Ks,Ms,Ts,Ns,inc,incu,incp,n,Nm,m,ipos;
 
-      bscale = int_power(2.0,-idrstmpl[1]);
-      dscale = int_power(10.0,idrstmpl[2]);
+      int_power(2.0,-idrstmpl[1]);
+      int_power(10.0,idrstmpl[2]);
       Js=idrstmpl[5];
       Ks=idrstmpl[6];
       Ms=idrstmpl[7];