Rainfall Headed to Parched Four Corners Area
Weather Summary: A broad upper-level ridge extended across the contiguous United States during this U.S. Drought Monitor week. A cold front moving through the ridge brought showers to parts of the northern Plains and Midwest, while a closed low retrograded beneath the ridge late in the week, dropping locally heavy rains as it trekked from the Mid-Atlantic to Southern Plains. Moisture from the low enhanced monsoon showers over the Southwest, while the rest of the West was dry. Temperatures were above normal except where depressed by frontal showers or the retrograding low.
Looking Ahead: During the next six days (July 17-22), a stationary front draped across the central Plains to Mid-Atlantic may bring up to an inch of rain from eastern Nebraska to the East Coast, Great Lakes and Gulf of Mexico Coast, with over 2 inches possible along the Mid-Mississippi to Ohio and Tennessee valleys. Monsoon showers could bring an inch or more of rain to the Four Corners states. Less than a quarter of an inch of rain is forecast for Oklahoma and adjoining parts of Texas, with most of the West expected to be dry. Temperatures should be near to above normal, with the warmest anomalies (6-12 degrees above normal) expected in parts of the West.
The NWS 6-10 day and 8-14 day forecasts (for July 23-31) show the highest likelihood of above-normal precipitation for the Southwest and much of the country east of the Mississippi, with below-normal precipitation from the Northwest to the Central and Southern Plains. The Northeast may expect cooler-than-normal temperatures with the highest likelihood of above-normal temperatures from the West to Great Plains. The southern two-thirds of Alaska should be warmer and drier than normal with the north cooler and wetter than normal.