0.25 Degree GFS Verfication Plots
Model verfication metric plots from 0.25 degree GFS forecasts are presented below.

Forecast Metric 
Plot 
Verfication Regions
Panel plot showing spacial coverage of different verfication regions.

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Two Week GFS 500mb Height Anomaly Correlation Coefficient (ACC)
Last two weeks of 500 mb height ACC for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts.

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Two Week GFS 500mb Height Root Mean Square Error (RMSE)
Last two weeks of 500 mb height RMSE for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts. 95th percentile is calculated using the last 90 days and plotted with a dashed line.

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Longer Record of GFS 500mb Height Anomaly Correlation Coefficient (ACC)
Longer record of 500 mb height ACC for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts.

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Longer Record of GFS 500mb Height Root Mean Square Error (RMSE)
Longer recrod of 500 mb height RMSE for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts. 95th percentile is calculated using the last 90 days and plotted with a dashed line.

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Four Panel Plot of 500mb Heights
Panel 1: Verfying 500 mb height analysis contoured with normalized anomalies in colorfill. Panel 2: Day3 forecasted 500 mb heights in solid contour, verfying analysis 500 mb heights in dashed contours, and the difference between forecast and analysis (FA) in colorfill. Panel 3: Same as panel 2 but for day5 forecast. Panel 4: Same as panel 2 and 3 but for day7 forecast.

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Two Week GFS 2 PVU Pot. Temperature Anomaly Correlation Coefficient (ACC)
Last two weeks of 2 PVU potential temperature ACC for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts.

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Two Week GFS 2 PVU Pot. Temperature Root Mean Square Error (RMSE)
Last two weeks of 2 PVU potential temperature RMSE for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts. 95th percentile is calculated using the last 90 days and plotted with a dashed line.

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Longer Record of GFS 2 PVU Pot. Temperature Anomaly Correlation Coefficient (ACC)
Longer record of 2 PVU potential temperature ACC for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts.

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Longer Record of GFS 2 PVU Pot. Temperature Root Mean Square Error (RMSE)
Longer recrod of 2 PVU potential temperature RMSE for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts. 95th percentile is calculated using the last 90 days and plotted with a dashed line.

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Four Panel Plot of 2 PVU Pot. Temperature
Panel 1: Verfying 2 PVU potential temperature analysis contoured with normalized anomalies in colorfill. Panel 2: Day3 forecasted 2 PVU potential temperature in solid contour, verfying analysis mean sea level pressure in dashed contours, and the difference between forecast and analysis (FA) in colorfill. Panel 3: Same as panel 2 but for day5 forecast. Panel 4: Same as panel 2 and 3 but for day7 forecast.

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Two Week GFS MSLP Anomaly Correlation Coefficient (ACC)
Last two weeks of mean sea level pressure ACC for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts.

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Two Week GFS MSLP Root Mean Square Error (RMSE)
Last two weeks of mean sea level pressure RMSE for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts. 95th percentile is calculated using the last 90 days and plotted with a dashed line.

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Longer Record of GFS MSLP Anomaly Correlation Coefficient (ACC)
Longer record of mean sea level pressure ACC for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts.

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Longer Record of GFS MSLP Root Mean Square Error (RMSE)
Longer recrod of mean sea level pressure RMSE for the Arctic region (north of 60 N), MidLatitudes (60 N to 20 N), CONUS (between 25 N and 50 N, between longitude 235 and 295) and North Altantic (between 20 N and 75 N, between longitude 270 to 360) for day3, 5 and 7 forecasts. 95th percentile is calculated using the last 90 days and plotted with a dashed line.

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Four Panel Plot of MSLP
Panel 1: Verfying mean sea level pressure analysis contoured with normalized anomalies in colorfill. Panel 2: Day3 forecasted mean sea level pressure in solid contour, verfying analysis mean sea level pressure in dashed contours, and the difference between forecast and analysis (FA) in colorfill. Panel 3: Same as panel 2 but for day5 forecast. Panel 4: Same as panel 2 and 3 but for day7 forecast.

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