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Get the Portland, OR local weather forecast by the hour and the next 10 days.
In contrast, Portland, Maine has a fall and winter maximum, with a summer minimum in precipitation. [61] ... Last 24 hours of rainfall over the lower 48 - National ...
The heaviest rainfall noted over the past 30 years was from the precursor disturbance to Tropical Storm Isabel, when 31.67 inches (804 mm) fell at Toro Negro Forest. [107] Hurricane Eloise of 1975 dropped 33.29 inches (846 mm) of rainfall at Dos Bocas, with 23.07 inches (586 mm) falling in 24 hours.
Tropical cyclones from the eastern Pacific bring nearly 20 percent of the average annual rainfall to southern California. [1] The average storm total rainfall for a tropical cyclone impacting the contiguous United States from the Atlantic basin is about 16 in (410 mm), with 70 to 75 percent of the storm total falling within a 24‑hour period.
The historical average rainfall for the month of December is 5.72 inches in Seattle and 5.77 inches in Portland," explained AccuWeather Meteorologist Elizabeth Danco.
Here are rainfall amounts, in inches, from the last 24 hours (unless otherwise noted) by locality, according to National Weather Service St. Louis: Illinois locations. Belleville: 6.23, 6.33 ...
Oregon rainfall varies widely from region to region. Precipitation in the state varies widely: some western coastal slopes approach 200 inches (5,100 mm) annually, while the driest places, such as the Alvord Desert (in the rain shadow of Steens Mountain) in eastern Oregon, get as little as 5 inches (130 mm). [2] [3]
In as little as two hours, temperatures across the region jumped from near freezing to above 60 degrees in areas just as the first bands of the heavy rain were hitting. The storm moved northward through Oregon and Washington with strong rain (including 10.78 inches (274 mm) in 24 hours in Bremerton, Washington. [9]) accompanying the wind. The ...