2020 年 12 月 9 日至 12 月 11 日期间，北半球的部分地区，包括美国北部地区可见北极光。
Look up at the right time and skygazers in parts of the northern hemisphere may have an opportunity to spot the vibrant, dancing hues of the aurora borealis — if the right conditions persist through the nights of Dec. 10 and Dec. 11 in 2020.
A geomagnetic storm watch was in effect between Dec. 9 and 11, according to NOAA’s Space Weather Prediction Center (SWPC). The magnitude of the storm dictates how visible and to what extent the northern lights can be seen. And while the storm’s intensity was downgraded on Dec. 10, astronomers assure viewers in the northernmost latitudes that there is a probability of spotting the elusive lights.
According to the community outreach initiative dedicated to space weather, the Northern Lighthouse Project, a G1 geomagnetic storm can still produce hours of vibrant auroras in the northern hemisphere, particularly across the parts of Western Canada. Shorter periods of active auroras can also be seen at mid-latitudes in southern Canada and the northern U.S.
A simulation of the Dec. 10 show can be seen at the SWPC site by clicking on the image below “The Aurora.”