The largest area of deterioration was in southeastern Georgia and adjacent South Carolina, where D0 was introduced. Most of the deterioration was noted closer to the center of the Region. Areas that received heavier rainfall and saw dryness ease a bit included northwestern Alabama, southwestern Georgia, northeastern Florida, part of northeastern most Georgia, and a small area near the Virginia/North Carolina border. Notable dryness isn’t affecting a large part of this Region, and only a few small isolated areas are in moderate drought (D1). The pattern of changed dryness and drought intensity was slightly more coherent here, from Alabama along the Eastern Seaboard through Virginia. Other areas were hit-and-miss, but severe drought (D2) or worse remains confined to areas near the Atlantic Coast, southeastern New England, a small area in west-central Connecticut and adjacent New York, and a newly-introduced area in parts of New York City and adjacent suburbs. These areas have received near or less than half of normal rainfall over the last 3 months, and only about 50 to 65 percent of normal in the last half-year, which is 9 to 11 inches less than normal. But of particular note is the introduction of extreme drought (D3) in eastern Massachusetts outside Cape Cod, and much of southern and eastern Rhode Island. The variable rainfall pattern means drought conditions eased in wetter areas, but drought persisted or worsened in areas that missed significant rains. F above normal in a large area across the central Rockies, most of the Plains, and the northeastern quarter of the country, exacerbating dryness in areas that missed the heavier rains. Little or no rain fell on the central and southern Great Plains, much of the central Rockies, and the Far West. Looking at the western half of the Lower 48, outside the areas affected by the monsoon, much drier conditions prevailed, though there were a few small areas recording moderate to heavy rainfall. This variable rainfall pattern had a similar effect on areas of dryness and drought, with deterioration noted very close to improvement in many cases, and only a few broad swaths with a consistent pattern.
In contrast, many areas across these regions recorded only a few tenths of an inch of rain or less, with tight gradients between heavy rain and lesser amounts common. Still, numerous patches of land across the Upper Midwest, the middle Mississippi Valley, the Ohio Valley, and the Gulf Coast east of Texas received over 3.5 inches of rain, with isolated totals of 6 to locally 11 inches reported in a swath from the middle Mississippi and lower Ohio Valleys northward through the Upper Midwest and western Great Lakes Region. In other areas from the Mississippi Valley eastward, heavy rain was less widespread. Most areas from southern Missouri and northeastern Arkansas through central Illinois recorded over 1.5 inches of rain, as did parts of the Tennessee and southern Ohio Valleys, the Upper Midwest and western Great Lakes Region, the Central Gulf Coast, and northern Maine. The average annual rainfall in Death Valley is less than 2.5 inches, and the 24-hour total makes August 2022 the wettest month in Death Valley since February 2010, and more than half of all calendar years bring less rain than that 24-hour total.įarther east, many areas from the Mississippi River eastward through the Piedmont and Middle Atlantic States recorded moderate to heavy precipitation.
Death Valley, CA set an all-time record for 24-hour rainfall, being doused with 1.46 inches during August 5 and 6. Across the interior West, heavy monsoon rains set records in some locales, with tropical moisture streaming much farther north and west than normal (through southern Montana, the Great Basin, and parts of the Sonoran Desert). Chicago rainfall totals 2021.Precipitation varied widely across the Lower 48 this week.
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