Extratropical Highlights

  Table of Indices  (Table 3)

  Global Surface Temperature  E1

  Temperature Anomalies (Land Only)  E2

  Global Precipitation  E3

  Regional Precip Estimates (a)  E4

  Regional Precip Estimates (b)  E5

  U.S. Precipitation  E6

  Northern Hemisphere

• Teleconnection Indices  E7
  
• SLP  E8
  
• 500-hPa Heights  E9
  
• 300-hPa Wind Vectors  E10
  
• 500-hPa Persistence  E11
  
• 500-hPa Heights Anom  E12
  
• 700-hPa Storm Track  E13
  

  Southern Hemisphere

  Stratosphere

  Appendix 2: Additional Figures

Time-Longitude Section of 500-hPa Height Anomalies

APRIL 2018

FIGURE E12.  Northern Hemisphere: Daily 500-hPa height anomalies averaged over the 5 degrees latitude band centered on 40N. Anomalies are departures from the 1981-2010 base period daily means.