| MONTH | EP | NP | PNA | EATL/
WRUS |
SCAND |
| AUG 2001 | --- | --- | 0.7 | --- | -0.2 |
| JUL 2001 | 0.5 | -1.1 | --- | --- | --- |
| JUN 2001 | -0.5 | -1.1 | --- | --- | --- |
| MAY 2001 | 0.8 | 0.4 | -0.2 | 0.8 | -1.0 |
| APR 2001 | 1.4 | -1.7 | -0.1 | -1.2 | -0.1 |
| MAR 2001 | 1.0 | 0.3 | -0.1 | 0.2 | -1.2 |
| FEB 2001 | -1.0 | --- | -1.8 | 1.3 | -0.3 |
| JAN 2001 | 1.3 | --- | 0.9 | -0.2 | 1.5 |
| DEC 2000 | -0.5 | --- | 1.1 | 0.1 | 0.7 |
| NOV 2000 | 0.1 | --- | 0.6 | -0.9 | 2.0 |
| OCT 2000 | 0.6 | --- | -1.1 | -0.7 | 2.1 |
| SEP 2000 | --- | --- | -0.2 | 0.3 | -0.2 |
| AUG 2000 | --- | --- | -0.9 | --- | 0.5 |
Standardized amplitudes of selected Northern Hemisphere teleconnection patterns for the most recent thirteen months. Pattern names and abbreviations are: East Pacific pattern (EP); North Pacific pattern (NP); Pacific/ North American pattern (PNA); East Atlantic/ Western Russia pattern (EATL/ WRUS- called Eurasia-2 pattern by Barnston and Livezey, 1987, Mon. Wea. Rev., 6, 1083-1126); and Scandinavia pattern (SCAND- called Eurasia-1 pattern by Barnston and Livezey 1987). No value is plotted when a pattern does not appear as a leading mode in that month.