- The 3/29 0Z GEFS run’s mean NAO prediction (see image below) of ~-1.75 for 3/31 is ~tied for the daily record low NAO for all of March (records go back to 1950)! The current March record is -1.75 (3/22/1980). It will also easily beat the current record low for March 31 of -1.3 (1975).
- This run is predicting the lowest NAO to be ~-1.95 to -2.00 (on 4/1). Should that verify closely, it would be a record low NAO (back to 1950) for the entire period covering Feb 15th through April 7th! It will also obliterate the current record low for April 1 of -1.2 (1975).
- This run implies there will be daily record low NAOs March 31-April 2nd and possible daily record lows April 3rd-5th.
- Related to this, the model consensus has a very strong nor’easter for ~April 4th.
Daily NAO back to 1950:
https://ftp.cpc.ncep.noaa.gov/cwlinks/norm.daily.nao.cdas.z500.19500101_current.csv