#Drought news: #NewMexico, #Arizona await #monsoon #ColoradoRiver #COriver

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


Heavy rainfall in parts of the Southeast brought relief to dry areas in the Mid-Atlantic States. Parts of eastern Tennessee, western Maryland, northwest Virginia, and West Virginia all saw a one category reduction of D0-D1 areas. Other parts of the eastern U.S. didn’t fare as well. Warmer than normal temperatures and seasonally low rainfall accumulations led to the expansion of D0 in parts of central Massachusetts and western New York, the introduction of moderate drought in southern parts of New Hampshire and Maine, and the persistence of D0-D1 conditions in other areas. In the West, temperatures were 6 to 15 degrees above normal, leading to the expansion of D0 across the Pacific Northwest. Other changes include the introduction of D2 in southern Arizona and along the South Dakota-Wyoming border…

The Plains

Texas was once again the recipient of heavy rains keeping the state drought-free. Missing out on the rains, west Texas saw some localized expansion of D0. Continued dryness has begun to stress crops near the tri-border area of South Dakota, Minnesota, and North Dakota resulting in a small pocket of D1 being introduced in the area. Likewise, the recent dryness has been affecting vegetation and raising fire concerns near the Black Hills resulting in the introduction of D2 and the expansion of D0 bleeding into northeast Wyoming, southeast Montana, and southwest North Dakota…

The West

The changes on this week’s map included a deterioration in conditions in the Pacific Northwest and southeastern Arizona and improvement in southern New Mexico. Record heat (up to 12 degrees above normal) in the Northwest has resulted in early snowmelt, low stream flows, and increased evaporation leading to a push of D0 across the remainder of Oregon, Washington and the Idaho Panhandle. Long-term drought remains in California, Nevada, Arizona and New Mexico as we move into the heat of summer. Southern Arizona has missed out on the winter and spring rain, deteriorating rangeland and leading to the introduction of D2 in the area. Recent rainfall (1-4 inches) in eastern New Mexico has improved D0 in the area. Southern New Mexico has also seen improved conditions and a trimming of D1. Potential for continued increases may be in store in the coming weeks with the start of the monsoon season…

Looking Ahead

Next week’s forecast (June 9-16) calls for hot and relatively dry conditions as a ridge moves across the Great Plains, Mississippi Valley, Ohio Valley, and Southeast. Significant rainfall accumulations are expected across the upper Midwest as thunderstorms move through the region. The National Weather Service 7-Day forecast also calls for dryness across much of California and northwestern Montana and accumulations of generally less than a half an inch across the lower elevations of the West. The Climate Prediction Center 6-10 day outlooks call for a continuation of above normal temperatures June 14-18 across the western two-thirds of the contiguous U.S. and Alaska and a relief to the recent warmth in the Pacific Northwest and New England. As for precipitation, the odds favor above-normal accumulations in Alaska, the Pacific Northwest, the Midwest, and the South while the Plains and Northeast are likely to be below normal.

North American Monsoon graphic via Hunter College.
North American Monsoon graphic via Hunter College.

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