Current Map | U.S. Drought Monitor
网页The Drought Monitor summary map identifies general areas of drought and labels them by intensity. D1 is the least intense level and D4 the most intense. Drought is defined as a moisture deficit bad enough to have social, environmental or economic effects.
Drought Timescales: Short- vs. Long-Term Drought
网页If a weather pattern that results in a precipitation deficit lasts for a few weeks or months, it is considered short-term drought. If the pattern and precipitation deficits last for more than six months, it is typically considered long-term drought. It is possible to have short-term changes that result in wet spells during a drought and for wet ...
Outlooks & Forecasts - Drought.gov
网页Featured Outlooks & Forecasts. Predicting drought depends on the ability to forecast precipitation and temperature within the context of complex climate interactions. Many different datasets and maps are available that predict how precipitation and temperature may change in the future.
U.S. Drought Monitor (USDM) | Drought.gov
网页The U.S. Drought Monitor (USDM) is a map that is updated each Thursday to show the location and intensity of drought across the country. The USDM uses a five-category system, labeled Abnormally Dry or D0, (a precursor to drought, not actually drought), and Moderate (D1), Severe (D2), Extreme (D3) and Exceptional (D4) Drought.
Observation-constrained projections reveal longer-than-expected …
网页3 天之前 · Drought is one of the most devastating natural disasters of modern times 7.Recent unprecedented drought events have demonstrated the high vulnerability and exposure of different societies and ...
Record drought gripped much of the U.S. in 2022
网页2023年1月10日 · The large coverage and long duration of drought conditions across the U.S. set several records in 2022. The year was also marked by numerous severe weather events, devastating hurricanes and deadly flooding across parts of the country.
Droughts and Climate Change | U.S. Geological Survey - USGS.gov
网页USGS research spans geographic and temporal scales, exploring everything from short, local “flash” droughts to long-term, large-scale “mega” droughts. Our science helps to: Understand how climate change contributes to modern droughts. Explore the effects of droughts on plants, animals, ecosystems, and communities.
How Severe Is the Western Drought? See For Yourself. - The New York Times
网页2021年6月11日 · Severe dryness covered California and Nevada just five years ago, from 2012 to 2016, and the Southwest has been in drought for much of the past two decades, punctuated by rare wet years.
Summary | U.S. Drought Monitor
网页4 天之前 · Despite widespread precipitation in the northern Rockies and environs, only slight drought improvement was introduced, as concerns related to poor vegetation health and water-supply shortages were ongoing. In one piece of good news, however, a summer-long Western heat wave effectively ended.
Megadrought in Southwest Is Now the Worst in at Least 1,200 …
网页2022年2月14日 · The drought that has enveloped southwestern North America for the past 22 years is the region’s driest megadrought—defined as a drought lasting two decades or longer — since at least the year 800, according to a …
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