Near-Surface Forecast Verification Statistics for operational NCEP models

Monthly composite of model diurnal forecast: SPL

2-meter air temperature NAM model only: SPL
00z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
00z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
00z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
12z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
12z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
12z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
2-meter relative humidity NAM model only: SPL
00z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
00z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
00z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
12z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
12z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
12z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
10-meter wind speed squared NAM model only: SPL
00z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
00z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
00z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
12z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
12z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
12z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008

2-meter air temperature NAM, GFS, and NGM models: SPL
00z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
00z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
00z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
12z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
12z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
12z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
2-meter relative humidity NAM, GFS, and NGM models: SPL
00z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
00z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
00z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
12z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
12z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
12z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
10-meter wind speed squared NAM, GFS, and NGM models: SPL
00z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
00z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
00z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008
.
12z cycle JAN2006 FEB2006 MAR2006 APR2006 MAY2006 JUN2006 JUL2006 AUG2006 SEP2006 OCT2006 NOV2006 DEC2006
12z cycle JAN2007 FEB2007 MAR2007 APR2007 MAY2007 JUN2007 JUL2007 AUG2007 SEP2007 OCT2007 NOV2007 DEC2007
12z cycle JAN2008 FEB2008 MAR2008 APR2008 MAY2008 JUN2008 JUL2008 AUG2008 SEP2008 OCT2008 NOV2008 DEC2008

Annual time series of 48-hour forecast bias: SPL

NAM model only

2-meter air temp, 00Z cycle
2006 2007 2008
2-meter air temp, 12Z cycle
2006 2007 2008
2-meter relative humidity, 00Z cycle
2006 2007 2008
2-meter relative humidity, 12Z cycle
2006 2007 2008
10-meter wind speed, 00Z cycle
2006 2007 2008
10-meter wind speed, 12Z cycle
2006 2007 2008

An explanation of how the plots are made and how to read the plots, and additional comments can be found here.