Drought news: D0 shows up in the #ColoradoRiver headwaters

Click here to go to the US Drought Monitor website. Here’s an excerpt:

Summary

During the past 7-days, heavy rain (in excess of 2 inches) fell across portions of the Southern Atlantic Coast region (especially the Florida peninsula, and the coasts of both Georgia and the Carolinas), the coastal ranges and Cascades of the Pacific Northwest, the Midwest, Maine, and the southern Alaska Panhandle. Heavy rain also fell in portions of east-central Puerto Rico, in association with what was Tropical Storm Erika. Larger-scale areas of moderate precipitation (0.5-2 inches) were reported in the Southwest, remaining portions of the coastal ranges and Cascades of the Pacific Northwest, portions of both the Rockies and Great Plains, the north-central Mississippi Valley, the interior Southeast, parts of Ohio and Pennsylvania, and New England. Moderate precipitation was also reported across interior Alaska and the Seward Peninsula, the northern Alaska Panhandle, and much of the remainder of Puerto Rico…

Northern and Central Plains

Slight adjustments were made to the D0 depiction in eastern and central Montana this week, based on recent rainfall. In Nebraska, three relatively small areas of abnormal dryness (D0) were introduced this week, based on increasing dryness. In the Panhandle, September is typically the time to plant hard red winter wheat. Warm, dry conditions are a concern in getting crop sown with good seed bed moisture and established with ample time for optimal root development prior to hardening off before the arrival of winter. In south-central Nebraska (Hall and Adams Counties), there were reports of dryland corn and beans rapidly deteriorating. Abnormal dryness (D0) was also added to extreme southeastern Nebraska (Pawnee and Richardson Counties). In northwestern, north-central, and central Kansas, D0 coverage was expanded based on 30-day and 60-day PNPs and the CPC 3-month SPI…

Northern and Central Rockies

A continuing lack of precipitation across western Montana prompted a slight eastward shift of all drought categories. In north-central Colorado (southeastern and central Grand County) less than a quarter-inch of rain fell this week. This was a hot, dry period with high evaporative demand, prompting the introduction of a small area of abnormal dryness (D0) to the drought depiction…

Southern Plains

Lots of relatively small-scale adjustments were made to the drought depiction in Texas and Oklahoma this week, primarily deterioration. An area of extreme drought (D3) was added to east-central Texas. Along the border with southeastern Oklahoma, severe drought (D2) was expanded across southern McCurtain, Choctaw, eastern Bryan and southern Pushmataha Counties. Abnormal dryness was expanded northward into southern Le Flore and southern Latimer Counties. An area of D0 was added to part of far southwestern Oklahoma, based largely on soil moisture data. Plant Available Water (PAW) in this area at 4-, 16-, and 32-inch soil depths is approximately 0.10-inch, 0.50-inch, and 0.95-inch, respectively…

Southwest and California

No alterations were made to the drought depiction this week in these areas. Conditions will be reassessed next week…

Looking Ahead

For the upcoming 5-day period, September 3-7, 2015, a swath of rain (1.5-2.0 inches) is forecast across eastern Arizona, much of western and central New Mexico, and western Colorado. For the southern Atlantic Coast, 1.5-3.5 inches of rain is predicted. Beneficial precipitation is also expected for western Washington (1.5 inches), northern Montana (2-4 inches), and western sections of both Virginia and North Carolina (1.5 inches). For the ensuing 5-day period, September 8-12, there are elevated odds for above-median precipitation for most of the central and eastern CONUS, and for the southern coast of Alaska. There are elevated odds for below-median precipitation for the northwestern CONUS and northwestern Alaska.

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