Low ground water ( GRACE, USGS) and springwater levels These include:ĭry soils ( VIC, CPC, NLDAS, and Leaky Bucket models and GRACE surface and root zone, crop CASMA topsoil and subsoil anomaly, crop CASMA topsoil and subsoil categorical, SPoRT surface and deeper layers, and USDA observations) The impacts of the drought can be seen in several drought indicators, especially in the West, Plains, and Atlantic Coast, and now filling in between the Mississippi River and East Coast. Numerous reports of drought impacts were received during June by the National Drought Mitigation Center, and new drought declarations have been made in the counties of several states. The percent area of the CONUS in moderate to extreme drought has hovered between roughly 35 and 53 percent for the last 22 months (since September 2020). The previous record was 68 consecutive weeks (Jto October 1, 2013).Īccording to the Palmer Drought Index, which goes back to the beginning of the 20 th century, about 44.8 percent of the CONUS was in moderate to extreme drought at the end of June, which is more than the end of May. This is a record in the 22-year USDM history. Expansion exceeded contraction for the 50 states and Puerto Rico, with the total moderate-to-exceptional drought footprint increasing from 41.4 percent at the end of May to 42.5 percent at the end of June.Īccording to USDM statistics, 40 percent or more of the CONUS has been in moderate drought or worse for the last 93 weeks. But hot and dry weather expanded or intensified drought or abnormal dryness in the Great Basin, southern and eastern Texas, from the Mississippi Valley to East Coast, across Puerto Rico, in much of Alaska, and across other parts of Hawaii.ĭrought contraction exceeded expansion for the CONUS, with the USDM-based national moderate-to-exceptional drought footprint across the CONUS decreasing from 49.3 percent at the end of May to 47.7 percent at the end of June. The above-normal precipitation in the Pacific Northwest, Southwest, and pockets in the Plains contracted or reduced the intensity of drought or abnormal dryness in those areas, and contraction occurred as well on the Big Island in Hawaii. But, for the month, drier-than-normal weather dominated the Great Basin and most areas east of the Rockies. The fronts, and tropical systems like Tropical Storms Alex and Colin, brought pockets of above-normal precipitation to areas east of the Rockies. Some of the fronts reached the southern states. An active Southwest Monsoon spread above-normal rain across the Four Corners states, and jet stream-driven Pacific fronts and surface lows gave the Pacific Northwest and northern California a wetter-than-normal month. The subtropical high and upper-level ridges inhibited precipitation, resulting in much of the CONUS and Alaska having a drier-than-normal month. The subtropical high frequently buckled the jet stream, with southerly surface flow associated with upper-level ridges spreading 90- and occasionally 100-degree (Fahrenheit) temperatures from the southern states into the central and northern Plains and Midwest. Warmer-than-normal monthly temperatures were associated with the high pressure systems, especially in states across the southern tier, Great Plains, and Midwest, and in southern Alaska. The jet stream was sandwiched between two high pressure systems - a subtropical high that dominated the southern states, and a high pressure ridge that dominated Alaska and western Canada. The upper-level circulation during June 2022 was very active with several shortwave troughs and closed lows moving through a strong westerly jet stream flow.
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