More ‘signs’ which suggest cold for down the road…
Snow advancement/extent over Siberia through October has been greatest in decades… Check out this eye-catching graphic tweeted by Anthony Sagliani.
Via Anthony Sagliani
Is this significant to our winter ahead?
Credit: NOAA
The OPI (October Pattern Index) has been firmly negative this year which can be a signal to cold for the approaching winter.
Year: OPI
1976: -1.75
1977: -0.95
1978: -1.8
1979: -0.5
1980: -0.05
1981: -0.4
1982: -1.1
1983: -0.3
1984: -1.8
1985: -1.9
1986: -1.3
1987: -0.45
1988: 1.45
1989: 0.25
1990: 0.55
1991: 1.1
1992: 1.75
1993: -0.15
1994: 0.7
1995: -0.65
1996: -0.75
1997: -0.75
1998: 0.1
1999: -0.2
2000: -0.75
2001: 0.45
2002: -0.9
2003: -0.7
2004: 0.3
2005: -0.7
2006: 0.85
2007: 0.75
2008: 0.25
2009: -3.15
2010: -0.85
2011: 0.65
2012: -1.65
2013: 1.6
When the OPI is positive like 2013, this signals warm for winter, however is firmly negative while the QBO is east and not west like last year. Solar cycle is trending down and not up like last year at this time and Siberian snowpack is way beyond the extent of last year too… there’s STRONG suggestion that a cold boreal winter is coming BUT is it coming to Western Europe? My upcoming winter forecast will let you know the conclusion to my thoughts.
The stratospheric warming already going off above Siberia may be the atmosphere’s early reaction to an abnormally large snow pack and an indicator of something greater brewing across the polar stratosphere come the cold season…
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