The National Weather Service in Seattle has indicated numerous weather patterns will continue to impact the region through the weekend. Strong winds and rain can be expected throughout the week.
Many regional landslides have occurred. Continued rainfall and saturated soils will contribute to landslide possibilities into next week.
The Weather service also alerted us to potential Coastal Flooding Thursday.
Low atmospheric pressures, the Chehalis River above flood stage and a storm impacting us Thursday will heighten the flooding impact to the region.
High astronomical high tides could reach 2-3 feet above the predicted levels.
Large combined seas will occur along our coast late Thursday afternoon into the early morning Friday, creating coastal flooding, severe erosion and prevent flood waters from flowing to sea.
Flood impacts will be dependent upon the time of high tide and the arrival of the storm.
Road closures could occur at any time to roads near the Chehalis River due to localized flooding.
TRAFFIC ALERT – HWY 12 has water over the roadway between Rochester & the Chehalis Reservation.
A Coastal Flood Warning is in effect 7am Thursday – 1am Friday morning. The large combined seas (ocean swell and wind driven waves), building along the coast Thursday will prevent flood waters from the Chehalis River from flowing to sea, increasing flooding risk in the Aberdeen area. The astronomical tides, storm surge and atmospheric pressures will contribute to 2-3 feet or higher tidal levels above the projected tides in all coastal areas.
Coastal flooding will occur during the times of high tide on Thursday, (highest tide between 11:30 am and noon in Aberdeen, Westport & Ocean Shores).
At this time, it appears the combined seas (ocean swell and wind driven waves), could reach 30 feet Thursday afternoon. Right now, (remember, it’s still a prediction), the high seas and the low tide coincide, which will lessen any impact by the flooding than if the event occurs during high tide.
Seas will be building this morning through the afternoon. If the timing of the larger seas is off just a few hours, flooding in Ocean Shores, Westport and Taholah could occur with waves overtopping jetties. The Aberdeen area could see the Chehalis River overflow into lower streets and possibly impact the Gateway Plaza area with minor flooding.
A WIND ADVISORY has been issued for the Central Coast, (Grays Harbor County), until 7pm Thursday evening. Winds will increase to 20-30 mph sustained and gust to 55 mph.
The Chehalis River is under a FLOOD WARNING and rising. It has reached flood stage (21’ at Porter) and is expected to crest at 22.95 feet @ 4 am Friday and then slowly recede Sunday morning.
Moderate flooding will impact numerous farms and roads including SR 12 in the Rochester to Oakville Area as well as near Porter. The crest will last nearly 24 hours.
No other area rivers are at risk of flooding at this time.
Sandbags will be available for all residents at the Brady Fire Station and all Grays Harbor County Road Shops between 8am & 3:30pm daily.
Brady Fire Station, (Station 32) – 8 Fire Station Rd, Montesano WA
GHC Road Shop Elma – 901 E. Main Street, Elma WA
GHC Road Shop Copalis Crossing – 1623 Ocean Beach Rd., Copalis Crossing WA
GHC Road Shop Cosmopolis – 632 4th St. Cosmopolis WA
All citizens should be prepared for power outages at any time this week. High winds and soil saturation could easily lead to broken branches and fallen trees.
DO NOT use portable generators indoors or near open windows or doors. Be alert for the effects of Carbon Monoxide poisoning. If anyone in the household becomes faint, dizzy, and nauseous or has extreme headaches, leave the property at once and call 911.
DO NOT DRIVE through standing or moving water. Many lives are lost due to cars attempting to drive through flooded roads. If you approach a flooded area, TURN AROUND and look for an alternative or wait until the waters subside.