Climate Monitoring / Climate of 2006 / June / Help

Climate of 2006 - June in Historical Perspective

National Climatic Data Center
13 July 2006

Contents of this Report:

Selected Global Significant Events for June 2006
Map of Selected
Global Significant Events
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Major Highlights


The average temperature for the continental United States from January through June 2006 was the warmest first half of any year since records began in 1895, according to scientists at NOAA's National Climatic Data Center in Asheville, N.C. Last month was the second warmest June on record and nationally averaged precipitation was below average. The continuation of below normal precipitation and much warmer-than-average temperatures expanded moderate-to-extreme drought conditions in the contiguous U.S. Meanwhile, much of the Northeast experienced severe flooding and record rainfall during the last week of June. The global surface temperature was second warmest on record for June.

U.S. Temperature Highlights
The average January-June temperature for the contiguous United States (based on preliminary data) was 51.8°F (11.0°C), or 3.4°F (1.8°C) above the 20th century (1901-2000) average. Five states (Texas, Oklahoma, Kansas, Nebraska, and Missouri) experienced record warmth for the period. No state was near, or cooler, than average.

It was the second warmest June on record for the nation. The warmth was focused on the West, where 11 states were much warmer than average. Only five states (Kentucky, Ohio, Pennsylvania, West Virginia, and South Carolina) were cooler than normal for the month.
The June statewide average temperature for Alaska was near average, and January-June was 0.55°F (0.30°C) cooler than the 1971-2000 average.

U.S. Precipitation Highlights
The average precipitation for June 2006 across the continental U.S. was 0.3 in. (8 mm) below the 20th century average.

Record rainfall in parts of the Northeast during May and June contributed to the wetter-than-normal first half of the year. Heavy precipitation along the East Coast June 22-28 resulted in widespread flooding. For example, Washington's Reagan National Airport reported a record 4-day rainfall of 12.11 inches (308 mm) and a record June total of 14.02 inches (356 mm). Federalsburg, Md., had a 5-day total of 15.20 inches (386 mm), with more than 10 inches (254 mm) falling in just 24 hours.

In June, 45 percent of the contiguous U.S. was in moderate-to-extreme drought (based on the Palmer Drought Index), an increase of 6 percent from May, while 27 percent was in severe-extreme drought (up from 20 percent in May). Additionally, since January, warm, dry conditions have spawned more than 50,000 wildfires, burning more than 3,000,000 acres in the contiguous U.S. and Alaska (according to the National Interagency Fire Center).

Global Highlights
It was the second warmest June on record for global land and ocean surfaces temperatures since records began in 1880 (1.08°F/0.60°C above the 20th century mean) and the sixth warmest year-to-date (January-June) (0.90°F/0.50°C).

In 2007 NOAA, an agency of the U.S. Commerce Department, celebrates 200 years of science and service to the nation. Starting with the establishment of the U.S. Coast and Geodetic Survey in 1807 by Thomas Jefferson much of America's scientific heritage is rooted in NOAA. The agency is dedicated to enhancing economic security and national safety through the prediction and research of weather and climate-related events and information service delivery for transportation, and by providing environmental stewardship of our nation's coastal and marine resources. Through the emerging Global Earth Observation System of Systems (GEOSS), NOAA is working with its federal partners and more than 60 countries to develop a global monitoring network that is as integrated as the planet it observes.

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Report Index

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to the top Global Analysis

to the top Global Hazards and Significant Events

to the top National Overview

to the top United States Drought

to the top U.S. Pre-Instrumental Perspective

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Climate Monitoring / Climate of 2006 / June / Help