Weather Summary: The prior week featured a couple of storm systems that produced significant rains across the Pacific Northwest, Upper and Middle Mississippi River Valley, and Ohio Valley. Early in the week, precipitation spread eastward along a warm front that extended from the Northern Great Plains to the Northeast. South of the warm front, some tropical moisture was able to stream northward across the southeast. Later in the week, precipitation was focused along a cold front that moved from the Great Plains to the east coast by Tuesday.
The Northeast and mid-Atlantic: Significant rains fell across many portions of the northeast, with some parts of Pennsylvania receiving nearly 3.0 inches of rain (0.5 – 1.5 inches was more common across New Jersey and New York). Much of the rainfall occurred west of the Appalachians, missing the driest areas along the coast. Where the rains did encroach on the areas depicted in moderate (D1) or severe (D2) drought, the rains were not enough to bring the 30-day totals back to near normal. As a result, the drought depiction remained nearly unchanged, except for some improvement where the rainfall totals were higher (1.0-3.6 inches) across Pennsylvania, west of the Susquehanna River. Rains continued to fall across the region near the data cutoff.
Across Maryland, dry conditions continued, with the moderate drought conditions being expanded westward to near the triple point of Virginia, Maryland, and West Virginia.
The Southeast and Tennessee Valley: A plume of tropical moisture moved northward across the Gulf of Mexico and brought heavy rains to portions of Alabama, Florida, Louisiana and western Georgia. The rains prompted some trimming of each drought level across southwestern Alabama and extreme western Florida. Extreme drought was removed from Okaloosa and Santa Rosa Counties in Florida, and along the I-65 corridor, north of Mobile. As a result of isolated convective rains (1.0 - 2.4 inches), reductions in the coverage of drought conditions were also pursued across west-central Georgia and eastern Alabama.
Across northeastern Florida, the rains missed the areas already under severe or extreme drought, so D4 (exceptional drought) was expanded to cover Saint Johns county. Additional expansion of D3 (extreme drought) was included over Flagler County. Standardized Precipitation Index (SPI) values for the past 3 months indicate moderate drought, but SPI values keyed to longer periods of record (6, 9, and 12 months) all indicate extreme or exceptional drought across this region.