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PW and SLP Standardized Anomalies

Caption:
+(upper left) Total column precipitable water (solid contours every 5 mm) and anomaly (shaded in sigma).
+(upper right) Sea-Level pressure (dashed contours every 4 hPa) and anomaly (shaded in sigma).
+(lower left) 500 hPa wind (arrows in m/s) and relative humidity (shaded in %).
+(lower right) 850 hPa wind (arrows in m/s) and relative humidity (shaded in %).
+Image was generated from 1.0x1.0^o NCEP-GFS data. Anomalies were computed using a 21-day running mean (1979-2009) from the NCEP-NCAR reanalysis.