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To: locogringo who wrote (1129946)	4/15/2019 1:17:49 PM
From: Wharf Rat	Read Replies (2) of 1574289

Nenana Ice Classic 2019 gavin @ 14 April 2019 Wow. Perhaps unsurprisingly given the exceptional (relative) warmth in Alaska last month and in February, the record for the Nenana Ice Classic was shattered this year. The previous official record was associated with the exceptional conditions in El Niño-affected winter of 1939-1940, when the ice went out on April 20th 1940. Though since 1940 was a leap year, that was actually a little later (relative to the vernal equinox) than the ice out date in 1998 (which wasn’t a leap year). Other records are also tumbling in the region, for instance the ice out data at Bethel, Alaska: View image on Twitter IARC Fairbanks@IARC_Alaska The Kuskokwim River at Bethel has gone out. This is, by far, the earliest breakup in the 90+ years of breakup data. This follows the warmest February and warmest March on record. @kuskoiceclassic @Climatologist49 @AlaskaWx 106 5:17 PM - Apr 12, 2019 116 people are talking about this Twitter Ads info and privacy While the trend at Nenana since 1908 has been towards earlier ice-out dates (by about 7 days a century on average), the interannual variability is high. This is consistent with the winter warming in this region over that period of about 2.5ºC. Recent winters have got close (2012/14/15/16) (3 to 4 days past the record), but this year’s April 14th date is an impressive jump (and with no leap year to help calendrically). As usual, I plot both the raw date data and the version adjusted to relative to the vernal equinox (the official time of breakup was ~12:21am). [As usual, I predict that there will be no interest from the our favorite contrarians in this] realclimate.org

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