PSD Map Room Weather Products
Forecasts of Teleconnection Indices
These indices are for four patterns of low-frequency tropospheric height variability, as classified in the study of Barnston and Livezey (MWR, 1987). The indices are based on centers-of-action of 500mb height patterns as defined below. The height fields are first spectrally truncated to total wavenumber 10 in order to emphasize large_scale variations. The circulation index of any particular day is a centered 3-day average. This again serves to emphasize the low frequency part of variability.
Last Update: Monday, 15-Sep-2008 22:48:48 MDT- North Atlantic Oscillation(NAO) [(35-45N, 70W-10W) - (55-70N, 70W-10W)]
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NAO Composite Positive Phase Map - Western Pacific Oscillation(WPO) [(25-40N, 140E-150W) - (50-70N, 140E-150W)]
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WPO Composite Positive Phase Map
- Pacific North America Pattern (PNA) [(15-25N, 180-140W)-(40-50N, 180-140W)+(45-60N, 125W-105W)-(25-35N, 90W-70W)]
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PNA Composite Positive Phase Map
- Eastern Pacific Oscillation(EPO) [(20-35N, 160W-125W) - (55-65N, 160W-125W)]
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EPO Composite Positive Phase Map
NAO Composite Positive Phase Map
WPO Composite Positive Phase Map
PNA Composite Positive Phase Map
EPO Composite Positive Phase Map![North Atlantic Oscillation(NAO) [(35-45N, 70W-10W) - (55-70N, 70W-10W)]](https://webarchive.library.unt.edu/eot2008/20080916155408/http://www.cdc.noaa.gov/map/wx/images/nao.gif){kind=link}
![Western Pacific Oscillation(WPO) [(25-40N, 140E-150W) - (50-70N, 140E-150W)]](https://webarchive.library.unt.edu/eot2008/20080916155408/http://www.cdc.noaa.gov/map/wx/images/wpo.gif){kind=link}
![Pacific North America Pattern (PNA) [(15-25N, 180-140W)-(40-50N, 180-140W)+(45-60N, 125W-105W)-(25-35N, 90W-70W)]](https://webarchive.library.unt.edu/eot2008/20080916155408/http://www.cdc.noaa.gov/map/wx/images/pna.gif){kind=link}
![Eastern Pacific Oscillation(EPO) [(20-35N, 160W-125W) - (55-65N, 160W-125W)]](https://webarchive.library.unt.edu/eot2008/20080916155408/http://www.cdc.noaa.gov/map/wx/images/epo.gif){kind=link}
Compare Daily Forecasts of Teleconnection Indices
DISCLAIMER: We are not an operational center and are not staffed 24/7. We make every effort to provide the forecasts in a timely manner, but there is no guarantee that they will be updated everyday.