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Environment & Energy
Related: About this forum5/8/18 Drought Monitor; Level 3 Drought Now Reaches From Yuma, AZ To Topeka, KS
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South
On this weeks map, improvements were made across parts of Texas (central, southern, western) where scattered showers and thunderstorms late last week and into the weekend produced locally heavily rainfall accumulations ranging from 2-to-5 inches while the drought-stricken Panhandle region remained hot and dry leading to slight expansion of areas of Extreme Drought (D3) and Exceptional Drought (D4). According to the May 7th USDA Texas Crop Progress and Condition report, winter wheat in the north-central Plains remained in poor condition. In Oklahoma, heavy rainfall (2-to-4 inches) was observed in parts of the state including southwestern, south-central, and east-central, leading to some targeted minor improvements along the sharp gradient between drought and drought-free areas. Elsewhere in the region, northwestern Arkansas and portions of northern Mississippi received rain during the past week with accumulations ranging from 2-to-3 inches. Temperatures were above normal across most of the region with the largest positive anomalies in western Oklahoma and the Texas Panhandle where maximum daily temperatures reached the mid-90s.
Midwest
On this weeks map, areas of Abnormally Dry (D0) and Moderate Drought (D1) were reduced in southwestern Iowa in response to rainfall accumulations of 2-to-3 inches. In northeastern Iowa and southern Wisconsin, 3-to-5 inches of rain fell this week helping to improve soil moisture and streamflow conditions. In contrast, areas of Abnormally Dry (D0) were introduced to portions of Illinois, Minnesota, and Missouri where rainfall has been below normal during the past 60 days with areas of below normal surface and root zone soil moisture appearing on the latest satellite-based NASA GRACE-based drought products (http://nasagrace.unl.edu). For the week, average temperatures were 2-to-10 degrees above normal with maximum daily temperatures exceeding 80°F. Looking at the month of April, the Upper Midwest region experienced its coldest April on record, according to NOAA NCEI.
High Plains
On this weeks map, locally heavy rains (3-to-5 inches) impacted isolated areas of northeastern Kansas leading to reduction in areas of Moderate Drought (D1). Meanwhile, short-term precipitation deficits during the past 30 to 60 days led to expansion of areas of Abnormally Dry (D0) in eastern North Dakota where local pastures are in need of rainfall and some cattle producers are running low on feed. According to the May 7th USDA NASS North Dakota Crop Progress and Condition Report, pasture and range conditions were reported as 5% very poor and 22% poor. In southeastern Nebraska and the eastern half of Kansas, dryness during the past 30 to 60 days has led to low streamflows especially in Kansas where many rivers and creeks are currently flowing well below normal levels. For the week, the region was warm and dry (with the exception of portions of northeastern Kansas, northeastern Colorado, and southeastern Wyoming) with temperatures well above normal and maximum daily temperatures exceeding 80°F.
West
On this weeks map, areas of Extreme Drought (D3) expanded in north-central Arizona and central New Mexico. In north-central Arizona, precipitation for the current Water Year (October to present) is the driest on record or falling within the bottom 10th percentile, according to the Western Regional Climate Centers WestWide Drought Tracker. Looking at statewide precipitation rankings, Arizona experienced its 3rd driest October-through-April period on record while New Mexico had its 10th driest, according to the NOAA NCEI. Elsewhere in the region, areas of Exceptional Drought (D4) expanded in southwestern Colorado where precipitation totals for the current Water Year at a number of NRCS SNOTEL stations (in the San Juan Mountains) are at record low levels with well below normal runoff forecasted. Overall, the West was hot and dry during the past week with some light shower activity (generally less than 1 inch) observed in the Intermountain West, central and northern Rockies, and portions of the Pacific Northwest. Average temperatures were well above normal in the northern half of the region while the southern half was near normal.
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http://droughtmonitor.unl.edu/DroughtSummary.aspx
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