Weekly Weather Summary: As the week commenced, a strong storm system in the Northeast quickly departed, bringing tranquil weather to the East and Southeast for the remainder of the week. In the Southwest, however, an upper-air low developed and intensified, generating strong winds in the Southwest, especially southern California, and gradually spreading precipitation and colder air into the Four Corner States. Parts of Arizona, New Mexico, and southern Colorado received between 1 and 2.5 inches of precipitation. As this system tracked eastward into the Nation’s midsection over the weekend, moderate to heavy precipitation (more than 2 inches) fell from central Texas northeastward into the eastern Great Lakes by Tuesday morning. Heavy rains (more than 4 inches) were reported in parts of northeastern Texas, northwestern Louisiana, southern and eastern Arkansas, western sections of Tennessee and Kentucky, and southeastern Missouri. A second band of light to moderate precipitation (1 to 2 inches) occurred from central Kansas northeastward into southern Wisconsin. In contrast, little or no precipitation fell on the West, northern Plains and upper Midwest, and Southeast (from southeastern Louisiana eastward to the Carolinas). Temperatures averaged below normal in the western half of the Nation and in the Southeast, while milder weather was limited to the Northeast, Great Lakes region, and northern Plains.
Southeast: After last week’s beneficial (and torrential in some areas) precipitation in most of the Southeast, much drier weather returned to southern and eastern sections. Heavy rains, however, were not absent from the South as western and northern Louisiana, Arkansas, northwestern Mississippi, and western Tennessee received 2 to 4 inches of rain, with local totals to 6 inches. Short-term deficits (30- and 60-days) were effectively eased or erased in western Louisiana and southern Arkansas, but medium (6 to 12 months) to long-term (more than a year) departures still remained (20 to 30 inches). As a result, a 1-category improvement was made to the D4 area on the Louisiana and Texas border where 6-month and year-to-date deficits were noticeably less than surrounding areas. In contrast, the SPI blend indicated that D4 still remained in this region. Elsewhere, D0 to D3 1-category improvements were made further north were recent conditions have been wetter, this week’s precipitation totals were greater (3 to 5.5 inches), and long-term deficits were smaller. In northwestern Alabama, another week with light to moderate precipitation (0.7 to 1.5 inches) effectively alleviated the D0(S). At 12-months, a large precipitation anomaly gradient existed between northern Arkansas (20 inch surplus) and northwestern Louisiana (20 inch deficit).