All articles tagged with #kp index
NOAA forecasts a minor geomagnetic storm that could push the aurora well south of its usual range, potentially visible across 24 U.S. states tonight, with peak viewing between 10 p.m. and 2 a.m. local time in clear, dark skies; Alaska is most favorable, but a broad swath from the West to the Northeast could see shimmering skies if conditions hold and solar activity remains strong.
NOAA's Space Weather Prediction Center says the northern lights could be visible tonight across 18 U.S. states if skies stay clear, with the aurora expected to be strongest on April 16–17; visibility depends on the Kp index and NOAA's nightly viewline forecast.
A strong forecast from NOAA indicates that the northern lights could be visible across many northern U.S. states along the Canada border on Monday and Tuesday nights, with the best viewing times between 10 p.m. and 2 a.m. in areas with minimal light pollution, and increased activity due to the solar cycle.
The Aurora Borealis may be visible across 15 northern U.S. states this weekend, with the best viewing conditions depending on clear weather and a peak Kp-index of 4.67, indicating increased geomagnetic activity. States like North Dakota, Michigan, and Maine are among those expected to have the best chances to see the northern lights, which are caused by solar wind interactions with Earth's magnetic field.
Mainers in the northern United States were treated to sightings of the Northern Lights over the weekend, with more expected throughout the winter season. The Kp index, which characterizes the size of geomagnetic storms, forecasted a 6.3 for Saturday's storm, indicating aurora activity. The Northern Lights, created when charged particles from the sun interact with Earth's atmosphere, can be seen between 9 p.m. and 3 a.m. during clear, dark skies. The ongoing solar cycle is expected to peak in 2024, making the 2023-2024 winter season a prime time for colorful displays.
Despite reports of a potential solar storm and northern lights show, experts at NOAA's Space Weather Prediction Center now believe that the chances of seeing the Northern Lights are low. The Kp Index, which determines the probability of auroras, is forecasted to be relatively low, with a maximum value of 3.67. While the situation could change quickly, for now, the likelihood of a moderate to strong geomagnetic storm between July 12 and July 14 is only one to five percent.
A geomagnetic storm reaching level two out of five on the Geomagnetic Storm Impact scale has the potential to produce aurora borealis over the Northern Hemisphere from Sunday evening into Monday morning, with some states along the US-Canadian border having the potential to see the Northern Lights. The best viewing is typically between 10 p.m. and 2 a.m. local time, and due to the moon being in a Waxing Crescent phase, the lunar body should not be a hindrance to skywatchers.