Flooding continued from the previous month of March along the Snake River near Ontario, Oregon.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOI wrote it up.
Flooding continued from the previous month of March along the Snake River near Ontario, Oregon.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boise, ID wrote its last area forecast discussion before the first event at Apr 1, 1:35 PM MST, 5 hours 55 minutes earlier.
Area Forecast Discussion National Weather Service Boise ID 235 PM MDT Sat Apr 1 2017 .SHORT TERM...Tonight through Monday...A cold front in central Oregon and Washington will swing through SE Oregon and SW Idaho tonight through Sunday morning. Showers will accompany the front, with the bulk of the showers expected over the higher terrain south of the Snake River, including Owyhee County and southern Twin Falls County. Elsewhere, expect scattered light showers. Snow levels of around 8000 feet will lower to 6000 feet on Sunday. Most of the showers will occur in the warm sector ahead of the front. Breezy Northwest winds and cooler temperatures will follow the front on Sunday. The breezy and cooler weather will continue through Monday. An upper level trough over the northern Rockies will bring a chance of snow showers to the higher terrain of Baker County and the West Central Idaho Mountains. .LONG TERM...Monday night through Saturday...Some lingering showers Monday night into Tuesday for northern portions of the CWA with the exiting boundary. Snow levels begin to climb above 5000 feet MSL by Wednesday morning as an upper level ridge builds in over the Pacific Northwest. This ridge is short lived, however, as the next system makes its presence felt by Wednesday night in SE Oregon. Chances of precipitation for the Oregon zones Thursday morning with a pre-frontal trough. This trough progresses eastward Thursday bringing a chance of precipitation to the entire CWA by the afternoon. Some slight differences among the models on when to bring the actual boundary onshore, but models continue to show a very wet Friday and weekend. Snow levels start to drop to right around 4500 feet MSL by Saturday night. Temperatures remain above normal through Friday then drop to right around normal Saturday. && .AVIATION...VFR. Increase in mid-upper level cloud cover this evening. Chance of showers pushes in from the northwest tonight. These showers will progress southeast through Sunday afternoon. Surface winds, variable 10-15 kts. Winds aloft to 10k feet MSL, north-northwest 10-25 kts. && .HYDROLOGY...A Flood Warning is in effect for the Big Wood River in Gooding where significant flooding is expected to continue through early next week. A Flood Warning remains in effect for the Boise River near Glenwood Bridge. A Small Stream Flood Advisory is also in effect for the Camas Prairie due to snowmelt and runoff from recent rains. The Snake River near Weiser is forecast to approach flood stage tonight so will continue to monitor. Significant precipitation is not expected through the middle of next week, thus additional flooding is not expected. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && www.weather.gov/Boise www.facebook.com/NWSBoise www.twitter.com/NWSBoise SHORT TERM...BW LONG TERM....JC/WH AVIATION.....JC HYDROLOGY...BW
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Flooding continued from the previous month of March along the Snake River in eastern Malheur County from Nyssa to Ontario.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2017Every state in 2017This day in weather historyWarnings in Oregon, April 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 697231.