Nino1+2 Nino3 Nino34 Nino4
Week SST SSTA SST SSTA SST SSTA SST SSTA
07AUG2019 20.3-0.6 25.3 0.1 27.3 0.4 29.6 0.9
14AUG2019 20.0-0.7 24.7-0.3 27.0 0.1 29.5 0.8
21AUG2019 20.3-0.3 24.7-0.3 26.8 0.0 29.5 0.8
28AUG2019 20.2-0.4 24.6-0.3 26.5-0.2 29.2 0.6
04SEP2019 19.8-0.6 24.9 0.0 26.6-0.2 29.1 0.5
Nino 3 warmed up a bit this week. Well behind 2017 for cold at this point, except in Nino 1.2 which is volatile.
09AUG2017 20.5-0.3 25.1 0.0 26.7-0.2 28.7 0.1
16AUG2017 19.9-0.7 24.5-0.5 26.4-0.5 28.8 0.1
23AUG2017 19.6-1.0 24.6-0.4 26.7-0.1 28.9 0.2
30AUG2017 20.3-0.2 24.5-0.4 26.5-0.2 28.8 0.2
06SEP2017 20.4-0.1 24.3-0.6 26.2-0.6 28.7 0.1
CFS & Canadian have essentially opposite winter forecasts right now, with the CFS warm almost everywhere for SSTs and the new Canadian cold almost everywhere.
The Weatherbell guys like a blend of 2013-14/2014-15 or 2013-14 (x3), 2014-15, 2018-19. That gives you a cold eastern tropical Pacific, with a warm western tropical Pacific. I have some issues with it as a blend, but it does look close to current SSTs. The West is generally wetter in winters after El Ninos for one. The sea ice was also a lot higher in 2013/2014 at the minimum extent in September. Also think Nino 4 will be a lot warmer than that blend, but we'll see. The ECMWF Nino 3.4 Sept 1 forecast updated should be out any day now, and the Jamstec is likely later in the week too.