National Drought Mitigation Center
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National Drought Mitigation Center
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Columbia County, Oregon, yellowing, browning, and stressed trees and vegetation
8/30/2016 10:24:41 PM



CATEGORIES:
Plants & Wildlife
AFFECTED AREAS:
Columbia County, OR

Start Date: 3/29/2016 - End Date: 8/29/2016
Another very dry April, May, and June vs norms. Soil moisture from very wet December (16 inches) dried down early. Warm and dry wealth led to early bloom and pollinator activity on both cultivated and native plants, and season advanced about three weeks with very heavy berry and similar crops. Deciduous trees started yellowing and browning in July. Seasonal seeps gone in June (vs late July). Many signs of plant stress, suggesting a continued wave of multi-factor drought stress to disease to insect activity on conifers. Many conifers dropping and browning interior needles as early as July, early Aug. Repeat of flaring out and sudden conifer death from prior stress in prior years. Even the Willamette Valley ponderosas are showing moisture stress and they are among the most drought tolerant here. CoCoRaHS Report from Station #Clatskanie 3.0 NE on 8/29/2016
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