Sunday 9 a.m.
The flood watch area has shifted slightly to the east, excluding the lower Columbia Basin. The old map has been removed and the new one is posted in its place. Here is the updated watch from the National Weather Service:
Grande Ronde Valley-Wallowa County- Northern Blue Mountains of Oregon- Southern Blue Mountains of Oregon-John Day Basin-Ochoco- John Day Highlands- Foothills of the Southern Blue Mountains of Oregon- Including the cities of La Grande, Enterprise, Joseph, Wallowa, Union, North Powder, John Day, Canyon City, Mount Vernon, Prairie City, Heppner, Condon, and Fossil 827 AM PDT Sun May 19 2019 ...FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY MORNING... * Flood Watch for portions of northeast Oregon, including the following areas, John Day Basin and Ochoco-John Day Highlands, Grande Ronde Valley, and Wallowa County. * Through Monday morning * A front will remain stationary over eastern Oregon through tonight...bringing steady rain to areas that received significant precipitation from a recent event. Rainfall amounts will generally range from one half inch to one and a half inches by Monday morning. * The biggest threat will be rock slides or mud slides in steep terrain..but there is a possibility of localized flooding. Rivers and creeks already running high may have sharp rises that could breach their banks. Primitive roads may be impassable due to erosion and flooding.
PENDLETON, Oregon – The National Weather Service has issued a flood watch for portions of northeast Oregon including the foothills of Oregon’s Blue Mountains, the lower Columbia Basin in Oregon, Wallowa County, the John Day Basin, the Ochoco-John Day Highlands and the Grande Ronde Valley for Sunday morning through Monday morning.
Forecasters report that a front will remain stationary over northeastern Oregon on Sunday and Sunday night, bringing steady rain to areas that received significant precipitation recently. Precipitation will vary from a half to one inch from Sunday through Monday mornings.
The biggest threats from the system are rockslides or mudslides in steep terrain. There is also the possibility of localized flooding as rivers and creeks are already running high and could escape their banks. Forecasters caution that primitive roads could become impassable due to erosion and flooding.
The public is asked to monitor forecasts and be alert for possible flood warnings, which mean flooding is either imminent or happening. A flood watch means there is a potential for flooding based on current forecasts. Those living in flood-prone areas should be prepared to take action.