Monday, Dec. 7th – Lincoln County
Summary: Strong winds and heavy rain continue this morning.
Past 24 Hours High/Low/Gust/Rain/Total…
Lincoln City: 56F/51F/51mph/1.97”/3.33”
Depoe Bay: 56F/50F/50mph/1.69”/2.81”
NOTE: The incredible number of Warnings, Watches and Advisories now in effect will consume the rest of today’s report. Those traveling away from the Central Coast can expect heavy rain and windy conditions throughout all of Northwest Oregon with snow levels rising well above the Cascade highways.
The High Wind Warning remains in effect for the Central Coast until 3:00pm this afternoon. South winds 25-35 mph gusting to 60 in coastal communities. Beaches and headlands will likely see stronger winds, 35-45 mph gusting as high as 70 mph. The strongest winds will be this afternoon. These strong winds may make travel difficult for high profile vehicles, especially along Highway 101. Isolated power disruptions will be possible, along with localized blockage of roads due to damaged trees.
An Urban and Small Stream Flood Advisory has been issued by the National Weather Service for the Central Coast. Doppler radar and automated rain gauges indicated heavy rain which will cause urban and small stream flooding in the advisory area. As much as 4 inches of rain has fallen in the last 24 hours in parts of the Coast Range. Excessive runoff from heavy rainfall will cause ponding of water in urban areas, highways, streets and underpasses as well as other poor drainage areas and low lying spots. Do not attempt to travel across flooded roads. Find alternate routes. It takes only a few inches of swiftly flowing water to carry vehicles away. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, as well as farm and country roads. Do not attempt to travel across flooded roads. Find alternate routes. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides.
A Flood Watch has been issued by the National Weather Service, in effect through Wednesday afternoon. The first in a series of very wet Pacific frontal systems moved through Northwest Oregon overnight. The next one will move through today, followed by another Tuesday into Wednesday and an additional storm Wednesday night and Thursday. Rainfall may reach 12 inches in the Coast Range and parts of the Cascades through Friday, with 3-5 inches in the valleys. All of this rain combined with saturated soils will cause significant rises on area rivers. There is the potential for multiple rivers to reach flood stage this week. Rivers most at risk this week include but are not limited to, the Siletz and the Alsea, the Grays, the Nehalem, the Wilson, the Trask, and the upper Tualatin, as well as the Clackamas, the Luckiamute and the Pudding Rivers. For the latest river conditions, go here.
A High Surf Advisory remains in effect until 10:00pm this evening. Breakers 20-25 feet through this morning building to 25-30 feet this afternoon. The largest waves will be this afternoon. Unpredictable and destructive waves may wash over jetties and other structures with no warning. Rip currents will be especially strong. Beach erosion is possible. Stay off of all jetties, offshore rocks, rocky shores and sandy beaches today.
A Coastal Flood Advisory for minor tidal overflow in effect from 8:00am to 1:00pm today, tomorrow and Wednesday. Tides will run about 1 to 2 feet above the astronomical predicted values. The highest tides of the cycle will occur in the mornings today through Wednesday:
12/07 Mon 09:09 AM 8.37′ High
12/08 Tue 09:47 AM 8.66′ High
12/09 Wed 10:24 AM 8.91′ High
Expect flooding of estuaries and low-lying coastal rivers, streams and creeks an hour or two before and after these high tides. Rivers will be running high beginning today, too, which will contribute to flooding adjacent to estuaries and low-lying areas of coastal rivers, streams and creeks. Flooding of low-lying areas and some roads prone to tidal flooding can be expected.
A Storm Warning is in effect for offshore waters today as SW winds rise to 35-40 knots gusting 50 and seas build to 26-30 feet. Strong winds and very large rough seas are expected all week.