Waarschuwingen, Agency Creek Quarry

Overstroming

22-2 10:57 a.m. 10:57 – 23-2 12:15 p.m. 12:15

Hydrologic Outlook issued February 22 at 2:57AM PST by NWS Portland OR ESFPQR An series of frontal systems will bring heavy rainfall to northwest Oregon and southwest Washington through Monday. Heavier rain will begin with the arrival of a front this afternoon, and intensify tonight into Sunday. After a brief lull in precipitation late Sunday, another strong system will bring additional moderate to heavy rainfall on Monday. This will lead to rises on rivers and creeks, especially for rivers draining the Willapa Hills and Oregon Coast Range through Monday. Main stem rivers may be delayed to respond, and flooding may occur beyond this time frame. There is around a 20-30% chance of the Wilson River, the Grays River, and other localized quick responding coastal rivers of reaching minor flood stage by late Sunday or early Monday. More widespread river flooding is not expected, but increases in forecast precipitation amounts could lead to additional rises on area rivers if heavier rainfall stalls over the area for a longer period of time. Heavy rainfall along the Cascades combined with snowmelt will lead to an enhanced risk of landslides. Heavy rainfall may also lead to ponding of water and localized urban flooding, especially in low-lying areas or other poor-drainage areas. Heavy rainfall will also increase the potential for landslides in areas of steep terrain. The probability of debris flows is currently low as rainfall rates are not expected to meet thresholds over areas that have been burned by wildfires over the past few years. Shifts in the forecast storm track can change the outlook and probabilities for river flooding, so be sure to monitor weather.gov/portland for the latest weather updates, as well as any watches, warnings, or advisories that may be issued. To view the latest river forecasts, visit water.noaa.gov/wfo/pqr.

National Weather Service

Overstroming

23-2 12:00 p.m. 12:00 – 26-2 12:00 p.m. 12:00

Flood Watch issued February 22 at 2:32PM PST until February 26 at 4:00AM PST by NWS Portland OR * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northwest Oregon and southwest Washington, including the following counties, in Oregon, Benton, Clackamas, Clatsop, Columbia, Cowlitz, Hood River, Lane, Lincoln, Linn, Marion, Multnomah, Polk, Tillamook, Washington, and Yamhill. In Washington, Clark, Pacific, Skamania, and Wahkiakum Lowlands. * WHEN...From late tonight through late Tuesday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations, especially for rivers draining the Willapa Hills and Oregon Coast Range. Flooding may occur in poor drainage and urban areas. Landslides are possible through this period, especially over the Cascades due to heavy rainfall above 7,000 feet combined with snowmelt. There is low probability for debris flows as rainfall rates are not expected to meet thresholds over recently burned areas. * ADDITIONAL DETAILS... - An atmospheric river and series of frontal systems will produce periods of heavy rainfall over northwest Oregon and Southwest Washington through Monday. The heaviest rain will be over the coast, Coast Range, Willapa Hills, and Cascades where rain totals from Saturday through Monday night will range from 3 to 6 inches, with locally higher amounts possible. Snow levels will rise to above 7,000 feet on Sunday, and snow melt due to rain falling on the Cascade snow pack could cause additional flooding concerns for drainages from the Cascades along with enhanced risk of landslides. - http://www.weather.gov/safety/flood You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

National Weather Service

Wind

24-2 3:00 p.m. 15:00 – 25-2 12:00 p.m. 12:00

High Wind Watch issued February 22 at 6:49PM PST until February 25 at 4:00AM PST by NWS Portland OR * WHAT...South winds 25 to 35 mph with gusts up to 60 mph possible, except up to 65 mph along beaches, headlands, and higher elevations in the Coast Range and Willapa Hills. * WHERE...South Washington and North and Central Oregon Coast, North and Central Coast Range Mountains of Oregon, and Willapa Hills. * WHEN...From Monday morning through late Monday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. Consider sleeping in a location that is furthest away from large trees and power lines. Be aware of your surroundings and where you are relative to nearby trees and powerlines. Prepare for potential power outages. If you have a gas-powered generator, ensure you have enough fuel. Ensure you have batteries, flashlights, and a way to maintain a safe body temperature if you were to lose heating and cooling. Consider storing perishable refrigerated food items and/or medications in a large cooler filled with ice. Consider having an arborist analyze the health of any trees that may exist on your property, as any unhealthy trees should be removed prior to the onset of high winds if possible. Monitor the latest forecasts and warnings for updates.

National Weather Service

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