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NATIONAL CLIMATE SUMMARY


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Welcome to Jim Munley's Local Climate Data Page. This contains a brief analysis of the Nation's Climate.

The November nationally averaged temperature was 45.1F, 3.4F above the 20th century average, and ranked as the seventh warmest on record.

The national precipitation total was 1.58 inches, 0.65 inch below average, marking the 19th driest November on record.

The year-to-date U.S. average temperature was the third warmest on record at 56.4F, 2.6F above average. Only January-November of 2012 and 2016 were warmer.

During November, above-average temperatures were observed for much of the Southwest and Central Rockies with below-average precipitation for the Southwest, Great Plains, Southeast, and Northeast. An active storm pattern brought above-average precipitation to the Northwest and Northern Rockies, as well as parts of the Ohio Valley. According to NOAA's National Snow Analysis, at the beginning of November, 8.3 percent of the contiguous U.S. had snow on the ground — the highest elevations in the Rockies, parts of the Central Plains, and northern areas of the Upper Midwest.

Based on the Palmer Drought Index, severe to extreme drought affected about 6 percent of the contiguous United States as of the end of November 2017, an increase of about 3 percent from last month. About 6 percent of the contiguous U.S. fell in the severely to extremely wet categories.About 14 percent of the contiguous U.S. fell in the moderate to extreme drought categories (based on the Palmer Drought Index) at the end of November. On a broad scale, the 1980s and 1990s were characterized by unusual wetness with short periods of extensive droughts, the 1930s and 1950s were characterized by prolonged periods of extensive droughts with little wetness, and the first decade of the 2000s saw extensive drought and extensive wetness.




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