Reports from NOAA's National Climatic Data Center (NCDC) in Asheville, N.C. indicate that the heat waves encountered in the USA during the months of June, July, and August, represent the second warmest summer.
The press release indicates the following:
- Excessive heat in six states -- Arizona, Colorado, New Mexico, Texas, Oklahoma, and Louisiana -- resulted in their warmest August on record. This year ranked in the top ten warmest August for five other states: Florida (3rd), Georgia (4th), Utah (5th), Wyoming (8th), and South Carolina (9th).The Southwest and South also had their warmest August on record.
- Only nine of the lower 48 states experienced August temperatures near average, and no state had August average temperatures below average.
- An analysis of Texas statewide tree-ring records dating back to 1550 indicates that the summer 2011 drought in Texas is matched by only one summer (1789), indicating that the summer 2011 drought appears to be unusual even in the context of the multi-century tree-ring record.
- Texas had its driest summer on record, with a statewide average of 2.44 inches of rain. This is 5.29 inches below the long-term average, and 1.04 inches less than the previous driest summer in 1956. New Mexico had its second driest summer and Oklahoma its third driest summer. New Jersey and California had their wettest summers on record with 22.50 inches and 1.93 inches, respectively.
- Based on NOAA's Residential Energy Demand Temperature Index, the contiguous U.S. temperature-related energy demand was 22.3 percent above average during summer. This is the largest such value during the index's period of record, which dates to 1895.
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