Minimal changes to representation of #Colorado – Coyote Gulch

Click on a thumbnail below to view a gallery of drought data from the US Drought Monitor website.

Click the link to access the US Drought Monitor website. Here is an exerpt :

Summary of this week’s drought

This week US Drought Monitor (USDM) saw isolated patches of heavy rain in Southern California and the desert southwest in association with residual moisture from Tropical Cyclone Kay late last week. Over the weekend and early this week, residual moisture from the system moved further into onshore impact areas including southern California, southern Sierra Nevada, the desert southwest and parts of the Great Basin. Overall, the heaviest accumulations were seen in very isolated high elevation areas of the Peninsular Ranges and Southern California Cross-Section Ranges with accumulations ranging from 3 to 5 inches in addition to reports of gusty winds between 70 and 100 mph. Unfortunately, the overall impact of rainfall on California’s long-term drought has been negligible. In the High Plains, above normal temperatures (2 to 6 degrees F) and generally dry conditions over the past week have continued to exacerbate drought conditions in central and northern parts of the Plains, with an increasing number of drought impacts in the agricultural sector being reported to the National Center for Drought Mitigation. In Texas, areas of isolated heavy precipitation accumulations (3 to 5+ inches) this week continued to ease drought-related conditions in the Rio Grande Valley and southern Texas. In the Midwest, widespread heavy rainfall accumulations ranging from 2 to 6+ inches impacted northern Illinois and southern Wisconsin over the weekend, erasing some of the short-term rainfall deficits. Elsewhere in the region, a combination of short-term and long-term precipitation deficits in Iowa has caused the map to deteriorate, with precipitation deficits over the past 90 days ranging from 4 to 8+ inches in the south from Iowa. In the Northeast and Mid-Atlantic states, widespread shower activity this week has helped improve drought-related conditions in the southern part of the Northeast region as well as easing the short-term precipitation deficits (last 30 to 60 days) in coastal areas. Plain and Piedmont of North Carolina. In the southeast, most of the region remained drought-free except for coastal areas of east-central and southern Florida, where rainfall deficits over the past 90 days ranged from 4 to 12+ inches, which has raised some concerns about hydrological drought (some low groundwater and surface water levels) with the end of the rainy season approaching. As for the summer months of 2022, the contiguous United States experienced its 3rd warmest June-August period on record since 1895 in terms of average temperatures (+2.52 degrees F anomaly). National average minimum temperatures for the August (+3.20 deg F) and July-August (+3.12 deg F) periods were the warmest on record, according to the National Centers for Environmental Information (NCEI) from NOAA. Precipitation in the contiguous United States in August and July-August 2022 ranked 19th and 28th wettest, respectively, placing it in the top 1/3 wettest…

High Plains

In this week’s map, degradation has taken place in parts of Kansas, Nebraska, South Dakota and North Dakota in response to continued drought, declining soil moisture, poor pastures and rangelands and impacts on dryland crops. In Kansas and Nebraska, the latest 7-day flow levels showed flows well below normal, especially in Nebraska. In southern Nebraska, many gauging stations on rivers and streams observed flows in the 1st to 2nd percentile range, according to the US Geological Survey. For the week, average temperatures were above normal in the Dakotas (1 to 4 degrees F) while Nebraska, eastern Wyoming and Kansas were near normal to slightly below normal. According to the NOAA NCEI, the Great Plains region had its 5th hottest month (+2.7°F) and the driest June-August 19th on record. Statewide, Nebraska had its 3rd driest June-August as well as its 2nd driest August on record…

Colorado Drought Monitor one-week change chart ending September 13, 2022.

West

In the west, numerous large wildfires are currently burning in parts of California, Oregon and Idaho, causing evacuations, structural damage and reduced air quality. In this week’s map, some improvements have been made in Southeast California, Southern Nevada and New Mexico in response to this week’s rainfall associated with residual moisture from Tropical Cyclone Kay as well as the overall impact of this summer’s monsoon rains which helped to improve short-term meteorological drought conditions and vegetation health. Elsewhere in the region, a combination of short- and long-term drought, low flow and declining soil moisture has led to intensified drought conditions in parts of Montana and Idaho. For the week, average temperatures were 2 to 10 degrees above normal in California, the Great Basin, northern parts of Arizona and New Mexico, and parts of the Pacific Northwest. . Conversely, cloud cover associated with the remains of Kay reduced daytime warming in the deserts of southeastern California and southern parts of Arizona and New Mexico, where average temperatures were 2 to 6 degrees lower than normal. According to the NOAA NCEI, the period from June to August 2022 was the 3rd hottest on record for the Western climate region, which includes California and Nevada. Also, in terms of average minimum temperatures, the August (+5.6°F) and July-August (+4.8°F) periods were the hottest on record. In terms of precipitation, August was the 8th wettest on record for the Western climate region and the driest January-August (-6.95 inches) on record. For the southwestern climatic region, it was the 7th wettest June-August period on record and the 7th hottest for the contemporary period. In the Northwest climate region, August (+6.2 deg F) and July-August (+5.3 deg F) were the hottest on record…

South

In the South, improvements were made in isolated areas of Mississippi, Tennessee and Texas. Downgrades were made on the map in areas of Oklahoma, where rainfall deficits over the past 90-day period ranged from -3 to -7+ inches. According to Oklahoma Mesonet, the past 90 days were the 7th driest in the state with a deviation of -4.79 inches from normal (50% of normal). Over the past week, rainfall accumulations in the region have been generally light (

Look forward

The NWS WPC’s 7-Day Quantitative Precipitation Forecast (QPF) predicts moderate to heavy precipitation accumulations ranging from 2 to 4+ inches in Upper Midwest regions, with the heaviest amounts expected in Michigan’s Upper Peninsula and northeastern Minnesota. Likewise, accumulations of 2 to 4+ inches are expected in parts of Florida. Elsewhere, lesser accumulations ranging from 1 to 2+ inches are forecast for northern parts of New England as well as western regions including the Northern Rockies, Wasatch Range, eastern Great Basin and parts of the Southern and Central Rockies. The CPC 6-10 day forecast calls for a moderate to high chance of above normal temperatures for all areas east of the Rocky Mountains, while much of the west is expected to be cooler than normal, except for coastal areas of California. Precipitation is expected to be above normal over much of the West. Below normal rainfall is expected over most of the Eastern Tier.

US Drought Monitor one-week change chart ending September 13, 2022.

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