Hydrologic Outlook issued December 27 at 3:02AM PST by NWS Portland OR
ESFPQR A series of storm systems will continue to bring a wet weather pattern across northwest Oregon through the weekend. This will lead to rises on rivers and creeks through at least December 30th. There is currently a 30-50% chance that several rivers in northwest Oregon will reach minor flood stage over the next 10 days, including: the Wilson River, Siletz River, Tualatin River, Siuslaw River, Marys Rivers, and the Pudding River. The Luckiamute River has the highest chance of hitting minor flood stage at 85%. In addition, there is a 20-25% chance the Nehalem River, Trask River, Yamhill River
Hydrologic Outlook issued December 27 at 2:58AM PST by NWS Portland OR
ESFPQR A series of storm systems will continue to bring a wet weather pattern across northwest Oregon through the weekend. This will lead to rises on rivers and creeks through at least December 30th. There is currently a 30-50% chance that several rivers in northwest Oregon will reach minor flood stage over the next 10 days, including: the Wilson River, Siletz River, Tualatin River, Siuslaw River, Marys Rivers, and the Pudding River. The Luckiamute River has the highest chance of hitting minor flood stage at 85%. In addition, there is a 20-25% chance the Nehalem River, Trask River, Yamhill River
Hydrologic Outlook issued December 26 at 12:15PM PST by NWS Portland OR
ESFPQR A series of systems will continue the wet weather pattern of late across northwest Oregon through the weekend. This will lead to rises on rivers and creeks through at least Sunday, December 29th. There is currently a 30-50% probability that several rivers in northwest Oregon including the Siuslaw River, the Mohawk River, the Marys Rivers, the Luckiamute River and the Pudding River will reach minor flood stage over the next week. Heavy rainfall may also lead to ponding of water, general lowland flooding and localized urban flooding, especially in low lying areas or other areas with poor drainage. Heavy
Hydrologic Outlook issued December 26 at 2:52AM PST by NWS Seattle WA
ESFSEW An atmospheric river brought 3 to 5 inches of precipitation to the Olympic mountains Wednesday into Thursday morning with snow levels around 4000 feet. While precipitation will be much less with the systems beginning Friday the lack of much of a break will keep rivers over the Southwest Interior rising into the weekend. It is possible the lower reaches of the Chehalis could flood Saturday. The Skookumchuck near Bucoda, Newaukum near Chehalis and the Satsop near Satsop could reach action stage late Friday into Saturday. Please monitor the latest river forecasts from the National Weather Service for additional information.
Hydrologic Outlook issued December 25 at 5:48AM PST by NWS Seattle WA
ESFSEW An atmospheric river will bring significant rainfall to the Olympic Mountains today into Thursday. Widespread rainfall totals of 3 to 5 inches are expected, with locally over 6 inches on the the highest peaks. Snow levels will increase from around 3,500 feet up to as high as 4,500 feet tonight before lowering once again Thursday. While precipitation will be much less with the systems beginning Friday the lack of much of a break will keep rivers over the Southwest Interior rising into the weekend. It is possible the lower reaches of the Chehalis could flood late Friday into Saturday.
Hydrologic Outlook issued December 23 at 4:24PM PST by NWS Seattle WA
ESFSEW An atmospheric river will bring significant rainfall to the Olympic Peninsula Wednesday into Thursday. Widespread rainfall totals of 4 to 6 inches are expected in the mountains, with locally over 6 inches over the highest peaks. Snow levels will begin around 3000 ft during this time frame. An extended wet period with snow levels above 4000 ft Thursday through next weekend over the Olympics and into portions of southwestern Washington. The area of concern for additional river flooding impacts may expand east to include rivers in Thurston and Lewis counties. Please monitor the latest river forecasts from the National
Hydrologic Outlook issued December 23 at 3:42PM PST by NWS Portland OR
ESFPQR A series of systems will bring an extended period of wet weather across northwest Oregon and southwest Washington through the weekend. This will lead to rises on rivers and creeks, beginning Wednesday evening, Dec 25th through at least Sunday, December 29th. There is currently a 15-30% probability that rivers west of the Cascades reach minor flood stage over the next ten days. Heavy rainfall may also cause ponding of water or localized urban flooding, especially in low lying areas or other areas with poor drainage. This also increases the potential for landslides and debris flows. The exact track of
Hydrologic Outlook issued December 22 at 3:20PM PST by NWS Seattle WA
ESFSEW An atmospheric river will bring significant rainfall to the Olympic Peninsula Wednesday into Thursday. Widespread rainfall totals of 3 to 4 inches are expected in the mountains, with locally over 5 inches over the highest peaks are possible. Snow levels will remain around 4000 to 5000 ft during this time frame. An extended wet period with snow levels above 4000 ft Thursday through next weekend over the Olympics and into portions of southwestern Washington. The area of concern for additional river flooding impacts may expand east to include rivers in Thurston and Lewis counties. Please monitor the latest river
Hydrologic Outlook issued December 19 at 8:53PM PST by NWS San Francisco CA
ESFMTR AN ACTIVE STORM TRACK ACROSS NORTHERN CALIFORNIA WILL BRING MODERATE RAINFALL AND AN INCREASED POTENTIAL FOR RAPID RIVER RISES ON NORTH BAY CREEKS AND STREAMS * WHATThe storm door is wide open with a very active storm track forecast to impact Northern California. Wet and unsettled weather will bring periods of light to moderate rainfall to the region with the biggest impact expected over the North Bay. The first couple of storms that are forecast to move across the North Bay Saturday and again on Sunday, will likely prime the soils resulting in quicker and more noteworthy rises of
Hydrologic Outlook issued December 18 at 3:36AM PST by NWS Seattle WA
ESFSEW An atmospheric river has brought 2 to 4 inches of precipitation across the Cascades of Snohomish County northwards over the last 24 hours. This has led to a rise in area rivers. However, river flooding is not expected for Whatcom, Skagit, and King Counties from this event. Although river flooding is not expected for Snohomish County, the Stillaguamish River continues to rise rapidly this morning due to 1 to 2 inches of precipitation over the last 6 hours in the Stillaguamish basin and vicinity. For this reason, the Hydrologic Outlook remains for Snohomish County. However, current river forecasts keep