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Winter 2026-2027. Historic Potential


Ji
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1 hour ago, Weather Will said:

Early winter analog ideas from WB's D'Aleo:  surprised by both maps actually...temps are cold and precip. is just normal.

IMG_0324.png

IMG_0326.png

The East based Nino folks are not going to agree. 

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CFSv2 latest 10 day mean of JFM 2m anomalies is beautiful fwiw:

IMG_1281.png.aa706b08cf26296b4453f681893e457a.png
 

Same for precip:

IMG_1283.png.d54739424d89819229c20c490a34b271.png


 Whereas this looks great and I’d love for it to verify closely, it’s important to keep in mind the following for the NE US regarding 15 years of mid-July CFSv2 JFM prog verifications (2012-26):

-Too cold 6 yrs/40% (including 4 much too cold): ‘24, ‘23, ‘21, ‘20, ‘17, ‘12

-Too warm 4 yrs/27% (including one much too warm): ‘26, ‘22, ‘15, ‘14

-Close 5 yrs/33%: ‘25, ‘19, ‘18, ‘16, ‘13

 Overall averages a cold bias in the NE, especially since 4 much too cold and only one much too warm. OTOH, only 6 of 15 (40%) were too cold…so not a strong cold bias and thus there’s still a reasonable level of hope that it could verify well.

——————————
 The cold bias in the SE is even stronger:

-Too cold 8 years/53% (including 4 much too cold): ‘24, ‘23, ‘21, ‘20, ‘19, ‘17, ‘16, ‘12

-Too warm 5 years/33% (but none much too warm): ‘26, ‘25, ‘22, ‘15, ‘14

-Close 2 years/13%: ‘18 and ‘13

—————————

 Interestingly, this cold JFM 2027 CFSv2 forecast isn’t a whole lot colder than the following one also made in mid-July for JFM 2016 (which similarly followed a super Nino peak) as it has a fairly similar pattern (just not as cold):

image.thumb.gif.b40743e0230db5017ac2b69ec34961b9.gif
 This is what verified: so, CFSv2 was close in NE but too cold in the S 1/2 of US:

image.png.6aa2d9fc5d230249a501a0762ed5ff4c.png

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