#Drought news: No change in depiction for #Colorado and a walk down the early June memory lane

Click on a thumbnail graphic to view a gallery of drought data from the US Drought Monitor.

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

This Week’s Drought Summary

This U.S. Drought Monitor week saw further deterioration in drought-related conditions across portions of the Southeast and lower Mid-Atlantic where persistent hot and dry weather stressed dryland crops, depleted soil moisture, and reduced streamflow activity. Some relief may be on the way during the next week, however, as heavy rains are expected to impact the region. In the South, beneficial rains helped alleviate small areas of drought in the Trans Pecos region of Texas while areas of Abnormally Dry (D0) were introduced on the map across Tennessee in response to short-term dryness and hot temperatures. In the Midwest, severe weather outbreaks and areas experiencing flooding continued to impact parts of the region. According to NOAA’s National Center for Environmental Information (NCEI), several states in the Midwest including Iowa and Minnesota experienced their wettest 12-month period (May 2018–April 2019) on record. In the High Plains, dry conditions during the past month led to introduction of areas of moderate drought in north-central North Dakota. Out West, drought conditions intensified in western Washington where streamflow conditions are well below normal levels after a shallow snowpack this past winter…

High Plains
On this week’s map, an area of Moderate Drought (D1) was introduced in north-central North Dakota in response to short-term precipitation deficits (30-90 days), dry topsoils, reports of stress to pastures, and low stock pond levels. According to the USDA, South Dakota topsoil was 52% in surplus with many areas experiencing flooded fields. For the week, northern portions of the region, including the Dakotas, experienced above normal temperatures with the largest positive anomalies ranging from 2-to-8 degrees above normal while southern portions of the region were a few degrees below normal. Overall, most of the region was dry during the past week with the exception of some isolated showers in Nebraska and eastern Wyoming…

On this week’s map, continued warm and dry conditions in the Pacific Northwest led to the introduction of Severe Drought (D2) in areas of western Washington including the Olympic Mountains where Water-Year-to-Date (since October 1st) precipitation at several NRCS SNOTEL stations has been well below normal ranging from the 14th to the 30th percentile. According to the USGS, the 7-day streamflow levels in rivers and creeks across western Washington and northwestern Oregon are flowing well below normal levels. In the Willamette Valley and coastal mountains of Oregon, areas of Abnormally Dry (D0) were added in response to the low streamflow levels and below normal precipitation during the past 30 days. In southwestern Montana, short-term dryness (past 30 days) led to the introduction of an area of Abnormally Dry (D0). In southeastern California and southwestern Arizona, areas of Abnormally Dry (D0) were removed as conditions have improved during the past year with precipitation in western Imperial County, California falling in the top 10% of percentile rankings. During the past week, average temperatures were well above normal across the Pacific Northwest, northern California, and the northern Rockies while the southern half of the region experienced below normal temperatures. Some isolated showers and thunderstorms were observed across the central Sierra, Great Basin, and eastern portions of Colorado and New Mexico…

Minor improvements were made on the map in small areas of Moderate Drought (D1) and Abnormally Dry (D0) in the Trans Pecos region of Texas where 1-to-4 inches of rain fell this week. In south Texas, short-term precipitation deficits during the past 30-day period led to the expansion of areas of Abnormally Dry (D0). In northeastern Mississippi and Tennessee, short-term precipitation deficits during the past 30 days and below-normal streamflow levels led to the expansion of areas of Abnormally Dry (D0). Conversely, Oklahoma has experienced a very wet period during the past 30 days with northern portions of the state recording rainfall accumulations of 6-to-12 inches above normal levels. According to the June 3rd USDA Oklahoma Crop Weather report, pasture and range conditions were rated 88% good to fair and livestock condition was rated 92% good to fair. For the week, average temperatures were above normal across most of the region with the largest positive temperature anomalies observed in northern Mississippi and Tennessee where temperatures were 4-to-8 degrees above normal with maximum temperatures reaching the low to mid 90s. Conversely, average temperature were 2-to-6 degrees below normal across the western half of Texas. Some light-to-moderate rainfall accumulations (2-to-4 inches) were observed this week in northern Texas, southwestern Louisiana, and northern Arkansas…

Looking Ahead
The NWS WPC 7-Day Quantitative Precipitation Forecast (QPF) calls for moderate-to-heavy accumulations ranging from 2-to-7 inches across much of the South and Southeast. Further north, lesser accumulations (<2 inches) are forecasted for eastern Colorado and New Mexico, the southern Plains, Midwest, Northeast, and Mid-Atlantic. Out West, dry conditions are expected to prevail across the Great Basin and Desert Southwest while some lesser accumulations (<1 inch) are forecasted for the northern Rockies of Idaho and Montana as well as western Washington. The CPC 6–10-day outlook calls for a high probability of above-normal temperatures across the West with the exception of Colorado, New Mexico, and Wyoming where temperatures are expected to be below normal. Likewise, the eastern two-thirds of the continental U.S. is forecasted to be below normal with the exception of the Gulf Coast region and Florida. In terms of precipitation, there is a high probability of above-normal amounts in areas east of the Mississippi River as well as in Texas and eastern portions of the Desert Southwest while dry conditions are expected in the Pacific Northwest and northern Plains. In Alaska, above-normal temperatures are expected with above-normal precipitation in the southeast, southwest, and coastal areas of south-central.

Click on a thumbnail graphic below to view a gallery of early June drought monitor maps.

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