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File: ENSOblog_wov_dailyPNAindex_graph.png

File name: ENSOblog_wov_dailyPNAindex_graph.png
Original Resolution (pixels): 2000 × 1142
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Alternate Text: Line graph showing the pacific north american pattern index from December 2021 - March 2022. The index was negative in December 2021 and then positive in 2022.
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Line graph showing the pacific north american pattern index from December 2021 - March 2022. The index was negative in December 2021 and then positive in 2022.

Image caption

The daily Pacific North American (PNA) Pattern index from December 1, 2021  - March 15, 2022. Positive numbers indicate that the PNA was in the positive phase, while negative numbers indicate the PNA was in the negative phase. There was a shift from a mainly negative PNA in December 2021 to a positive phase PNA in 2022. Climate.gov image using data from NOAA Climate Prediction Center.