Featured Research

from universities, journals, and other organizations

2010 was fourth warmest U.S. summer on record

Date:
September 14, 2010
Source:
National Oceanic and Atmospheric Administration
Summary:
The contiguous United States had its fourth-warmest summer (June-August) on record, according to the latest NOAA State of the Climate report. The report also showed the August average temperature was 75.0 degrees F, which is 2.2 degrees F above the long-term (1901-2000) average. Last month's average precipitation was 2.41 inches, 0.19 inch below the 1901-2000 average.

August 2010 rankings.
Credit: NOAA

The contiguous United States had its fourth-warmest summer (June-August) on record, according to the latest NOAA State of the Climate report issued September 8. The report also showed the August average temperature was 75.0 degrees F, which is 2.2 degrees F above the long-term (1901-2000) average. Last month's average precipitation was 2.41 inches, 0.19 inch below the 1901-2000 average.

This monthly analysis, based on records dating back to 1895, is prepared by scientists at NOAA's National Climatic Data Center in Asheville, N.C., and is part of the suite of climate services NOAA provides.

U.S. Temperature Highlights -- Summer (June through August)

  • It was the fourth warmest summer on record in the United States. Three climate regions had temperatures in the top five: the Southeast (warmest), the Central (third warmest) and the Northeast (fourth warmest).
  • Abnormal warmth dominated much of the east, where a record warm summer occurred in Rhode Island, New Jersey, Delaware, Maryland, Virginia, North Carolina, Tennessee, South Carolina, Georgia and Alabama. Nineteen other states experienced "much above normal" average temperatures.
  • Several cities broke summer temperature records, including New York (Central Park); Philadelphia; Trenton, N.J.; Wilmington, Del.; Tallahassee, Fla. (tied); and Asheville, N.C.

U.S. Temperature Highlights -- August

  • Persistently strong high pressure continued to dominate the weather pattern in the United States during August. This was the seventh warmest August on record, with a temperature that was 2.2 degrees F above the long term average.
  • The majority of the U.S. had above-average temperatures last month; Florida, Louisiana and Tennessee experienced their second warmest August on record. Fourteen other states had an August temperature among their warmest ten percent. No state experienced an average temperature significantly below its long-term average.
  • Regionally, the Southeast had its third warmest August on record, while it was the seventh warmest in the South and the eighth warmest in the East North Central region. Of the nine climate regions in the contiguous U.S., only the West and Northwest observed near normal August temperatures.

U.S. Temperature Highlights -- Year-to-Date (January through August)

  • The Northeast climate region experienced its warmest January-August period with an average temperature more than 3.4 degrees F above the long-term average.
  • Maine, New Hampshire, Vermont, Rhode Island, Connecticut and New Jersey each had their warmest year-to-date period and all of the Northeastern states ranked in the top ten percent of warmest periods on record. Only Florida and Texas had below normal temperatures for the period.

U.S. Precipitation Highlights -- Summer (June through August)

  • The summer storm pattern brought significant precipitation to the Upper Midwest. Wisconsin had its wettest summer on record, 6.91 inches above average. Several states in the region had a top-10 wettest summer: Michigan and Iowa (third wettest), Illinois and Nebraska (sixth), South Dakota (ninth) and Minnesota (10th). The East North Central climate region had its second wettest summer on record, and the nationally averaged precipitation was above average.
  • A persistent high pressure system and the lack of any significant tropical weather during the summer months contributed to below average precipitation in much of the Southeast and Mid-Atlantic. Long-term dryness in the Mid-Atlantic led to the development of severe drought in parts of Virginia, Maryland and West Virginia.
  • Heavy rainfall during the summer months across the Upper Midwest helped diminish rainfall deficits from the first five months of the year.

U.S. Precipitation Highlights -- August

  • August precipitation was highly variable across the contiguous United States, typical of a late-summer weather pattern. Eleven states experienced below normal precipitation and another eleven experienced above normal precipitation, yet the overall national average was below normal.

U.S. Precipitation Highlights -- Year-to-Date (January through August)

  • Wetness during the first eight months of 2010 in the northern Plains was offset by below average precipitation across a wide swath of the Southeast and Mid-Atlantic. The nationally averaged precipitation for the period was near normal. Dryness has persisted throughout 2010 in Louisiana, where parts of the state have been in drought since April.
  • The year-to-date precipitation was much above average in the East North Central (5th wettest) and the West North Central (10th wettest) regions. Iowa experienced its third wettest January-August, and South Dakota its' ninth wettest. Wisconsin and Nebraska also experienced much above average precipitation for the year-to-date period.

Other Highlights

  • Tornado activity during August was slightly below average. However, numerous August tornadoes in Minnesota, combined with an active summer, will likely help break the state's annual tornado record of 74, which was set in 2001.
  • NCDC's Climate Extremes Index (CEI) for summer 2010 was about one-and-a-half times its historical average. The CEI measures the occurrence of several types of climate extremes (like record or near-record warmth, dry spells or rainy periods). Factors contributing to this summer's value: a very large area with extremely warm nighttime low temperatures (six times larger than average and the largest since 1910) and an above-average number of days with average to heavy precipitation.
  • Based on NOAA's Residential Energy Demand Temperature Index (REDTI), the contiguous U.S. temperature-related energy demand for summer 2010 was the highest of the 116-year record and eighth-highest for August itself. The unusual warmth in the highly populated mid-Atlantic and Southeast contributed to the highest Summer REDTI value on record.
  • Wildfire activity during the January-August and August periods was exceptionally quiet. The acreage burned during August was the lowest in 11 years and the acres burned during the year-to-date period was less than half the long-term average due to the lack of extremely hot or extremely dry weather in the Western states where large fires are most common.

Story Source:

The above story is based on materials provided by National Oceanic and Atmospheric Administration. Note: Materials may be edited for content and length.


Cite This Page:

National Oceanic and Atmospheric Administration. "2010 was fourth warmest U.S. summer on record." ScienceDaily. ScienceDaily, 14 September 2010. <www.sciencedaily.com/releases/2010/09/100913165150.htm>.
National Oceanic and Atmospheric Administration. (2010, September 14). 2010 was fourth warmest U.S. summer on record. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/2010/09/100913165150.htm
National Oceanic and Atmospheric Administration. "2010 was fourth warmest U.S. summer on record." ScienceDaily. www.sciencedaily.com/releases/2010/09/100913165150.htm (accessed April 18, 2014).

Share This



More Earth & Climate News

Friday, April 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Drought Concerns May Hurt Lake Tourism

Drought Concerns May Hurt Lake Tourism

AP (Apr. 18, 2014) Operators of recreational businesses on western reservoirs worry that ongoing drought concerns will keep boaters and other visitors from flocking to the popular summer attractions. (April 18) Video provided by AP
Powered by NewsLook.com
Deadly Avalanche Sweeps Slopes of Mount Everest

Deadly Avalanche Sweeps Slopes of Mount Everest

AP (Apr. 18, 2014) At least six Nepalese guides are dead after an avalanche swept the slopes of Mount Everest along a route used to climb the world's highest peak. (April 18) Video provided by AP
Powered by NewsLook.com
The Great British Farmland Boom

The Great British Farmland Boom

Reuters - Business Video Online (Apr. 17, 2014) Britain's troubled Co-operative Group is preparing to cash in on nearly 18,000 acres of farmland in one of the biggest UK land sales in decades. As Ivor Bennett reports, the market timing couldn't be better, with farmland prices soaring over 270 percent in the last 10 years. Video provided by Reuters
Powered by NewsLook.com
Small Reactors Could Be Future of Nuclear Energy

Small Reactors Could Be Future of Nuclear Energy

AP (Apr. 17, 2014) After the Fukushima nuclear disaster, the industry fell under intense scrutiny. Now, small underground nuclear power plants are being considered as the possible future of the nuclear energy. (April 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins