#Drought news: No change in depiction for #Colorado, hot weather settling in for a number of days

Click here to go to the US Drought Monitor website. Here’s an excerpt:

Summary

Precipitation for the USDM period (June 7-14) was generally below normal for much of the country. Areas that received above normal rainfall were in Florida and along the coast Georgia and the Carolina’s. This was associated with Tropical Storm Colin which exited the coast late in the previous period. Precipitation fell in the Great Basin and central Arizona improving drought conditions in parts of this area. Other areas that received above-normal rainfall were the Northern High Plains and the Southern Plains. Precipitation continued to be minimal in the Northeast, Great Lakes area, Midwest and Northwest, prompting the expansion of DO in the areas that are experiencing low stream flows and parched soils. Temperatures were warmer than normal in much of the western half of the country. The highest anomalies were located in the Northern High Plains where temperatures were at least 10 degrees above what is typically expected during the period. Temperatures were below normal in the Northeast and Great Lakes region…

High Plains

Precipitation was a mixture of above and below normal for much of the High Plains during the period. A broad area of above normal precipitation fell in eastern Montana, stretching eastward across northern North Dakota. In general, this area received about one inch greater than normal precipitation during the period. Further eastward into Minnesota, recent precipitation was enough to slightly contract the existing D0 in the south central part of the state and create a small doughnut hole in the northeastern part of the state. Pockets of below normal precipitation dotted the landscape, but the driest area was centered around the tri-state area of North and South Dakota and Minnesota. Again, generally speaking, this area recorded precipitation totals that were about one inch less than normal. Short and long term SPI values continue to deteriorate in the tri-state area. Stream flows are less than 10 percent and winter wheat and alfalfa are beginning to show signs of stress due to the recent dryness. Based on these conditions DO was expanded from southwestern North Dakota northward. In South Dakota, D1 and D0 were expanded from west to east based on the lack of rangeland productivity. Further South, D0 was extended south slightly to reflect the extreme 30 day SPI value in northwest Nebraska. This area is reporting 75-90 percent of normal precipitation in the 60 day time frame and less than 50 percent of normal in the 30 day time frame. In Montana, the winter snow melted about 2-4 weeks early. Additionally, short term precipitation deficits and low stream flows have compounded the situation. The abnormal dryness was reflected by expanding D0 in western Montana. D0 was also slightly expanded in the northwest corner of Wyoming to reflect the recent lack of precipitation and warm temperatures…

West

Above normal precipitation fell in central and southern Nevada and into north and south central Arizona during the period. These areas received up to 1 inch of precipitation more than what is typically seen during the period. Elsewhere precipitation deficits approached one-half inch or less than 5 percent of normal. Temperatures in the region were generally 3-6 degree F above normal except for a few small areas along the California Coast that were around 3 degrees F below normal. In northern California the canals are full, and water is in good supply at the moment. However, with the rapid snow melt this year, water supply may be a concern later this summer. The lack of precipitation during May is also a concern. For the first 11 days of June, precipitation values across northwest California are 5 – 20 percent of average. D0 was expanded to cover all of northwest California to reflect these conditions. Further south in San Diego and Sacramento, officials are expecting an above average fire season. All CalFire stations are at full staffing for the summer, about a month earlier than normal. No changes were made in Central or southern California. In the Reno area, impressive rainfall totals from the previous weekend allowed for further contraction of D3 along the crest of the White Mountains…

Looking Ahead

In the short term (through June 21), temperatures as much as 6 degrees F cooler than normal are forecasted to occupy much of the Northwest, while much of the interior of the country will continue to bake in 5-10 degree F above normal heat. Precipitation totals for the 5-day period ending on June 20 are forecasted to exceed 2 inches in southern Alabama and northern Florida as well as parts of the Mid-Atlantic. Based on the Climate Prediction Center’s 6-10 day outlooks (June 20-24), the greatest probability of warmer than normal temperatures will occur in the Desert Southwest and extending into the Great Basin and Southern Rockies. Odds are in favor of near normal temperatures for the Southeast Coast and Northern High Plains and Great Lakes area. Below normal precipitation is most probable for much of the Northwest and a narrow swath of area stretching from the Southern Plains into the Tennessee Valley. Odds are in favor for above normal precipitation to occur in the coastal areas of the Gulf Coast states and Florida as well as in the Great Lakes area and parts of the Northeast. For Alaska, there is an increased probability of above normal temperatures for much of southern Alaska. Chances of above normal precipitation exist for much of Alaska, especially for northwestern Alaska.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s