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'Monsoons' May Bypass Parched New Mexico

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July 11, 2013 by   - () Leave a Comment

Weather Summary: During the past week, a strong and persistent area of high pressure dominated the circulation over the western half of the lower 48 states, with some monsoon moisture bringing isolated rains (0.5 0 – 2.8 inches) to the Southwest.

Southerly flow around the Bermuda High supplied ample moisture and an upper-level trough provided the energy for widespread heavy rains (1.0 – 10.4 inches) across the Southeast, triggering flooding from the Gulf Coast to the Great Lakes. As the moisture thinned out, rains across the Northeast were sparser with isolated heavy rains across New York and Vermont. Dry conditions continued across the Pacific Northwest.

Looking Ahead: The next six days (July 10-15) favor wet weather across most of the eastern half of the nation, east of the Ohio and Mississippi rivers, with heavy rains forecast from the Gulf Coast to the Mid-Atlantic. Some rains associated with the North American Monsoon are also likely during the next five days across Arizona and Colorado, largely bypassing New Mexico. Generally, less than 1.0 inches of rain is forecast across the area from Texas to Illinois, California and the Pacific Northwest.

For the ensuing five days (July 16-20), the odds favor above-median precipitation over western Alaska, the southern Rockies, the Northern Great Plains, Western and Central Gulf Coasts and from the Great Lakes to the Mid-Atlantic. Dry conditions are likely across the Pacific Northwest, eastern Alaska, and the Central Great Plains. Temperatures are likely to be above normal west of the continental divide, and from the Midwest to the Northeast, with below-normal temperatures favored over New Mexico and the Southeast.

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