Drought Expands to Cover 65 Percent of US, Largest Drought Area in Monitor’s Record, At 77 Billion, Drought 3rd Most Costly Weather Disaster on Record

Drought conditions broadened to expand to cover much of the US this week even as monsoonal moisture lessened the severity of drought in some areas.

According to reports from the US Drought Monitor, drought expanded to cover more than 65% of the US, the largest area ever in the Monitor’s record. A broad, contiguous swath of land from the Tennessee and Mississippi river valleys to the Rio Grand in the south, the Canadian border in the north and the California coast in the south all continue to suffer from conditions of moderate to exceptional drought. In addition, a swath of abnormally dry to severe and extreme conditions concentrating in Georgia and eastern Alabama parched parts of the eastern US.

Though drought areas broadened, monsoonal moisture, usually a respite for this time of year, did cause some slight reductions in Severe to exceptional drought conditions. Overall, the areas covered by severe to exceptional drought dropped by slightly more than half a percent to reach 41.07% for this week.

Much of the US’s breadbasket remained under severe to exceptional drought conditions. Farmers’ fields lay over dessicated soil. Wilted corn ears produced tiny cobs or no cobs at all. The monsoonal rains coaxed up a fresh growth of green grass. But the very dry soils underneath do not bode well for next year’s growing season, unless a long period of rain rejuvenates the soil this winter.

According to reports from USA Today, this year’s drought is now expected to cost over $77 billion dollars, the third most costly weather disaster in US history after Hurricane Katrina and the 1988 drought. Areas hardest hit include Oklahoma, which just suffered from an extreme drought just last year. Texas, also hit by last year’s drought, is showing persistent or expanding drought as well.

In context, climate change has brought one year of record flooding to the US, followed by a year of record drought. These extreme swings from one condition to the next are not helpful to agriculture and crop viability. Overall, the trend toward drying and swings between more and more extreme conditions is likely to continue for much of the US over the coming decade and worsening into the the 2020s and 2030s.

This year’s drought also shows the potential to worsen into next year should a recovery not come this winter. Overall, this prospect is appearing more and more likely. According to the most recent drought forecast, much of the country is expected to show worsening drought. Only a small region is expected to show persistent or improving conditions and a very small region is expected to show improving conditions. Perhaps, more ominously, the northwest, so far spared the worse harms of the current drought, is expected to fall into drought conditions over the next few months.

Links:

http://www.cpc.ncep.noaa.gov/products/expert_assessment/seasonal_drought.html

http://droughtmonitor.unl.edu/monitor.html

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