Archive for September 20th, 2010

2010 one of the coolest year on record for Washington?

September 20, 2010

Quick post to show you the last 41 years of cumulative GDD data (Yakima Valley) that I got today:

Year  Cum GDD (ºF)
1984             2,232
1971             2,240
1975             2,240
1999             2,244
1980             2,247
1983             2,271
1976             2,272
1970             2,324
1974             2,326
1978             2,352
1981             2,354
1993             2,367
1996             2,368
1982             2,370
1973             2,406
2008             2,418
1972             2,442
1995             2,475
2007             2,488
2000             2,492
2002             2,526
1977             2,551
1989             2,560
1997             2,568
2001             2,619
1986             2,632
1991             2,645
1985             2,653
2005             2,653
2006             2,660
2009             2,663
1979             2,739
1988             2,751
2004             2,778
1994             2,806
1998             2,877
1990             2,884
1992             2,900
2003             2,910
1987             2,979

 Exciting table, no? The warmest years were 1987, 2003, 1992, 1990 and 1998. The coolest were 1984, 1971, 1975, 1999 and 1980. Right now we are trailing slightly behind 1999 so we could have the coldest year on record. What does that mean for quality? Well, it will really depends of night time temperature I believe. If we can hang our fruit without a night time frost for another 5 to 6 weeks, we will have a great vintage like 1999. If not, we will have a repeat of 1984 which, I have heard, was a disaster.

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