Heavy Snow — Grand Ronde Valley, Oregon

2013-01-29 · Grand Ronde Valley, Oregon

Wider weather episode

An upper level ridge off the Pacific stalled out and provided progressive northwest flow to the area for a 36 to 50 hour period. At the same time a strong weather system near Hawaii would transport moisture up through the Gulf of Alaska and down across the interior Pacific Northwest. Heavy snow was reported across the Blue Mountains, the John Day Highlands, and the John Day Basin.

Snowfall amounts in inches include: (11) in 21 hours 5 miles SSW of Spout Springs, (6) in 12 hours 10 NNE Ukiah, (8) in 22 hours 12 ESE Starkey, (6) in 22 hours 13 SW Mitchell, (5) in 24 hours 11 SSW John Day, (5) in 12 hours 6 ESE Prairie City, (4) in 12 hours 6 E John Day, (5) in 12 hours 1 NNW John Day, (6.2) in 24 hours 7 ESE John Day, (4) in 24 hours 4 SSW Mount Vernon, (7) in 24 hours Canyon City, (9) in 12 hours 9 NW Seneca, (11) in 24 hours 5 SSW Spout Springs, (12) in 24 hours 6 ESE Granite, (12) in 24 hours 18 SSE Prairie City, (16) in 24 hours 9 SW Ski Bluewood, (13) in 24 hours 16 WNW Ukiah, (11) in 12 hours 6 SSW Kamela, (12) in 24 hours 3 NNW Meacham, (14) in 24 hours 6 ESE Granite, (17) in 24 hours 16 WNW Ukiah, (10.5) in 24 hours with a storm total of (14.5) 4 NW Meacham, (15) in 24 hours 2 N Meacham, (7.2) in 24 hours 4 SSW Mount Vernon, (14) in 24 hours 6 ESE Prairie City, (12.5) in 24 hours 2 SSE John Day, (7) in 24 hours at John Day, (16.8) in 24 hours 9 NW Seneca, (5.8) in 24 hours 6 ESE Paulina, (10.5) in 24 hours 4 NW Meacham, (10) in 24 hours 1 NW Elgin, (10.2) in 24 hours 9 N Elgin, (6) in 24 hours 5 NNE La Grande, (6) in 24 hours 4 E Union, (6) in 24 hours 4 SE Imbler, and (5) overnight 21 ESE Joseph.

Source: NOAA Storm Events Database, event_id 422962. Narrative written by the NWS forecast office that issued the report.