A combination of solar activity and geomagnetic conditions can offer a rare spectacle in the mid-latitudes of the United States. The official forecast is that on the night of Monday August 18 could offer visible northern lights in several northern states, provided clouds and urban lighting permit.
Interest in the phenomenon is growing because Aurora borealis, normally associated with polar environments, could expand further south for a few hours. With dark skies and clear horizons, those looking north will have a better chance of spotting the light curtains greenish and pinkish that reveal the interaction between the solar wind and the Earth's atmosphere.
What to expect according to NOAA
El NOAA Space Weather Prediction Center forecasts for Monday night a minor geomagnetic storm with a Kp index around 5. This level indicates that the activity is sufficient for auroras to be visible outside the polar regions., especially in areas of dark sky and with low light pollution.
Although it is an event classified as moderate, the latitudinal extension of the auroral oval will increase temporarily. If the forecast is confirmed, it will be concentrated in the night window, with the possibility of rallies in very northern regions during the early hours of Tuesday.
Where they could be seen
The forecast places a group of clouds under the area of possible visibility. 13 states from the northern US. The key will be to have clear skies, low humidity and absence of artificial light.
- Washington
- Idaho
- Montana
- North Dakota
- Dakota del Sur
- Minnesota
- Iowa
- Wisconsin
- Michigan
- New York
- Vermont
- N.H.
- Maine
In the northernmost areas of these states, and if conditions permit, there may be another opportunity observation during the night of Tuesday. Media such as ABC News They have indicated that the week is favorable, but everything will depend on the local time and the actual level of geomagnetic activity.
Best hours and how to observe them
According to official recommendations, the most promising stretch to look at the sky is located between 22:00 and 4:00 (local time). The moon phase, with departure in the early morning hours, will help keep the sky darker at the right time.
To increase the odds, it is helpful to stay away from illuminated cities and roads, look for a clear horizon towards the north and allow your eyes to adjust to the darkness. The weather is a determining factor: a cloud cover can ruin visibility, so it is recommended to check the part local before leaving.
Tools of citizen science , the Aurorasaurus send real-time alerts based on user reports. By combining these alerts with the weather forecast, NOAA and light pollution maps make it easier to decide when and where to observe.
Causes of the increase in sightings
El solar maximum In the 11-year cycle of the Sun, characterized by an increase in sunspots and flares, the solar wind and favors phenomena such as auroras. According to agencies such as the NOAA and NASA, episodes may be more intense and frequent.
In recent months, auroras have been reported in unusual places such as Spain, the United Kingdom or internal areas of Canada. High activity could continue for the next few months, expanding observation opportunities.
Those who plan to go out to see lights in the sky should prepare warm clothing, a headlamp with Red light not to lose adaptation to the darkness and to be patient, since the auroras can appear in bursts brief, change shape, or fade away if geomagnetic activity fluctuates. With realistic expectations and a clear sky, Monday night offers an interesting opportunity to enjoy this natural spectacle.
