Will this be an El Niño winter?
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 The Oceanic Niño Index (ONI) started to show changes to the Pacific Ocean surface temperatures in April and May of this year.  Those temperatures are still rising which is a marker for the ...
5.NBT 6.NS 6.SP 7.SP MP2 MP8 8.SP 5.OA 6th 7th 8th HS 5th 4th 4.NF 4.OA El Niño Oceanic Niño Index winter