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Figure : observed-number-of-warm-nights-nm
Observed Number of Warm Nights
Figure 31.3North Carolina State University
Kenneth E. Kunkel
The observed number of warm nights (annual number of days with minimum temperature at or above 70°F) for 1900–2018, averaged over 5-year periods (bars; last bar represents 4-year average). Filled circles connected by black line segments show annual values. The horizontal black line shows the long-term average for 1900–2018 is 5.9 nights per year. These values are averages from eight long-term reporting stations. The frequency of warm nights has risen dramatically in the last two decades, with the 2010–2014 5-year period and the 2015–2018 4-year period experiencing about double the long-term average. Source: CICS- NC and NOAA NCEI.
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The time range for this figure is December 31, 1899 (00:00 AM) to December 31, 2014 (00:00 AM).
This figure was created on February 21, 2019.
This figure was submitted on June 03, 2019.
ProvenanceThis figure replaces figure 31.3: Observed Number of Warm Nights
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