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January 2020 was 5th warmest on record for the U.S.
admin
2020-02-06
发布年2020
语种英语
国家美国
领域资源环境
正文(英文)

The new year kicked off with a balmy start for the U.S., making January 2020 the fifth warmest January on record. All 48 contiguous states saw above- to much-above-average temperatures last month. 

January was also quite damp for the Lower 48 and ranked in the wettest third of the 126-year climate record.

Here are more U.S. highlights for the month from NOAA’s National Centers for Environmental Information:

Climate by the numbers

January 2020

The average January temperature across the contiguous U.S. was 35.5 degrees F (5.4 degrees above the 20th-century average) and ranked fifth warmest in the 126-year record.

January’s precipitation for the contiguous U.S. was 2.70 inches (0.39 of an inch above average), which ranked it in the wettest third of all the Januarys on record. January precipitation extended a rather wet 12-month stretch: February 2019 through January 2020 was the third-wettest such period ever recorded, 4.99 inches above average.

Much-above-average temperatures were observed across much of the Great Lakes and Northeast as well as parts of the Mid-Atlantic, Southeast, West and southern Plains. 

Last month, much-above-average wetness was observed across the Pacific Northwest as well as portions of the central and southern U.S. 

Washington state experienced its fourth-wettest January, while Oklahoma saw its sixth wettest on record.

An annotated map of the United States showing notable climate and weather events that occurred across the country during January 2020. For details, please visit http://bit.ly/USClimate202001.
An annotated map of the United States showing notable climate and weather events that occurred across the country during January 2020. For details, please visit http://bit.ly/USClimate202001.

More notable climate events for the month:

  • A January that forgot it was winter: No state in the Lower 48 ranked average or below average temperature-wise for January 2020. The month ranked as the fifth warmest January on record for Michigan, and the sixth warmest for Wisconsin and Rhode Island. 

  • Great Lakes saw relatively low ice coverage: Ice coverage was approximately 35 percent of average for January. Lake Erie, normally about 50 percent ice-covered by January 31, was only 0.4% frozen this year. 

  • Alaska chilled out (brrrrr!): In stark contrast to the record warmth experienced during 2019, Alaska’s average January temperature was a very frigid -6.2 degrees F -- 8.4 degrees colder than the long-term mean. It was Alaska’s coldest January since 2012. 

  • Drought remained stable: According to NOAA’s U.S. Drought Monitor, approximately 11 percent of the contiguous U.S. was in drought by the end of January, similar to the extent observed at the end of December 2019.

More > Access NOAA’s latest climate report and download the images.

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来源平台National Oceanic and Atmospheric Administration
文献类型新闻
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/270354
专题资源环境科学
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