Winter has arrived in Oregon! This morning has seen sub-zero temperature readings in eastern Oregon. The temperature at the Crane Prairie RAWS site (CPFO3) east of Seneca plummeted to -15 F this morning after a high yesterday of 24 F. SE of Bend at the Horse Ridge RWIS site (ODT33) the temperature also dropped to -15 F while Meacham ASOS along I-84 in the Blue Mountains recorded a minimum temperature of -11 F.
A new low temperature record of +2 F was established in La Grande along I-84 this morning:
RECORD EVENT REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
1040 AM PST WED DEC 7 2016
...NEW DAILY RECORD LOW TEMPERATURE FOR DECEMBER 7TH...
STATION PREVIOUS NEW RECORDS
RECORD/YEAR RECORD BEGAN
LA GRANDE(CITY), OR 3 / 1978 2 1887
The temperature dropped to freezing yesterday morning at 8 RAWS sites in eastern Oregon. But by late yesterday afternoon the temperature had climbed all the way to 80 F at 4 of the 8 sites. The temperature at Burns ASOS dropped to 31 F yesterday, the 5th morning to reach freezing this month (June 2016). CPFO3, Crane Prairie RAWS, where the temperature dropped to 25 F, is located east of Seneca, a notoriously cold location in eastern Oregon.
Oregon RAWS Daily Summaries for 25 June 2016
Cnty Elev StnID Tave Tmin Tmax Prcp Tdave Nt/Nd
Grant 5500 CPFO3 52.2 25 75 0 31.9 24/24
Harne 5000 FLFO3 57.6 26 80 0 23.8 24/24
Harne 5172 CWFO3 54.8 28 76 0 29.0 24/24
Harne 5320 ALFO3 54.6 29 76 0 31.8 24/24
Desch 4735 TPEO3 57.3 29 77 0 33.2 24/24
Desch 3231 CGFO3 58.0 30 82 0 37.0 24/24
Klama 4531 KMRO3 58.0 30 80 0 39.3 24/24
Malhe 4460 RTFO3 59.4 31 80 0 27.2 24/24
Yesterday (19 June 2016) saw the temperature drop to 22 F at the Foster Flat RAWS site (elev 5000 ft) in the Harney Basin south of Burns . This is the coldest temperature so far in the month of June 2016 at Foster Flat. The lowest temperature had been 26 F a week earlier on 12 June 2016.
22 F was followed later in the day by a high of 76 F making for a diurnal range of 54 F just one day removed from the summer solstice. Less than 36 hours after dropping to 22 F the temperature climbed all the way to 83 F the next day (20 June 2016). A total of 11 RAWS sites in Oregon out of 132 total measured temperatures in the 20s yesterday morning at elevations ranging from 3231 to 5500 ft.
On 15 June 2016, 41 out of 132 RAWS sites in Oregon reported a minimum temperature at or below the freezing point (32 F) with 2 sites in Klamath and Deschutes Counties reporting 23 F. The 850 hPa temperature at Salem Oregon reached a low of -0.1 C at 12 UTC 14 June 2016. This was followed by +0.2 C the next morning at 12 UTC 15 June 2016.
Redmond Oregon reached 24 F on 15 June 2016 which tied the record low temperature for the month of June. This was the third such occurrence over the past 69 years of record.
Lowest June temperatures at Redmond Oregon (1948-2016)
1) 24 F on 15 June 2016
2) 24 F on 4 June 1962
3) 24 F on 2 June 1976
4) 25 F on 8 June 2002
6) 26 F on 3 June 2001
Going back 125 years ago to the summer of 1891 we find some things just never change…note the Salem Statesman on 6 August 1891 was concerned about climate change, as quoted in the August 1891 monthly report of the Oregon State Climate Service.
Salem Statesman on 6 August 1891:
Yesterday afternoon the vicinity of Salem was again visited by a genuine down-East rain storm, with thunder and lightning accompaniments. This is the second storm of this kind to visit this immediate section this season, and it is a remarkable fact that they are the first storms of this nature that ever made their presence know hereabouts. The memory of the oldest inhabitant retains no recollection of like storms. Many persons have seen it rain just as hard here as it did yesterday, but no such vivid flashes of lightning were ever seen here, nor was such loud and sharp thunder ever heard in the valley.
Can it be the climate is undergoing a change, or is this the exception that forms the rule? But this season is a remarkably peculiar one, anyhow. Winter held on unusually long, making a late spring, with rains well into summer. And now, in the midst of harvest, to be treated to an electric storm–well, it is an attraction not down on the bills.
Seattle Sand Point (SEW) has seen measurable precipitation on each of the past 14 days (26 Feb – 10 Mar 2016). This month, with 3.20 inches so far, is likely to be the 6th consecutive month with above normal precipitation at SEW, where March normal precipitation is 3.51 inches. We may reach the annual normal of 36.1 inches before the end of this month, with 6 months still remaining in the 2016 water year.
Seattle Sand Point WFO
Oct 2015 3.83 +0.42
Nov 2015 7.16 +1.32
Dec 2015 9.41 +3.98
Jan 2016 7.19 +2.38
Feb 2016 4.07 +0.76
Mar 2016 3.20 through 10 March