Magnetic Storm Forecast for August 13–14: How to Cope with Geomagnetic Activity
On Thursday, August 13, geomagnetic activity is expected to reach a K-index of 2, and on Friday, August 14, it is expected to be around 3.7. Both values correspond to the green level, meaning no strong magnetic storms are forecast.
Geomagnetic activity is assessed using the planetary K-index, which ranges from 0 to 9: a value of 5 or higher indicates a geomagnetic storm.
Magnetic Storm Forecast for August 13–14
- Thursday, August 13 — K-index 2, green level.
- August 14, Friday — K-index 3.7, green level.
However, the geomagnetic activity forecast is subject to change. Data on solar activity is updated regularly, so it’s a good idea to check the readings again.
A magnetic, or geomagnetic, storm is a disturbance in the Earth’s magnetic field caused by solar activity. Streams of charged particles associated with solar flares and coronal mass ejections can reach Earth’s magnetosphere and cause geomagnetic disturbances.
According to the K-index:
- 0–4 — quiet or minor geomagnetic activity;
- 5 — a mild geomagnetic storm;
- 6–7 — stronger storms;
- 8–9 — very strong geomagnetic disturbances.
During powerful geomagnetic storms, radio communications, navigation systems, and satellite technologies may be disrupted. The aurora may also intensify at high latitudes.
Common claims that magnetic storms directly cause headaches, fatigue, or stress lack sufficient scientific evidence. Furthermore, magnetic storms do not cause changes in atmospheric pressure, as is sometimes claimed in popular forecasts.
If a person feels unwell during geomagnetic activity, they should focus primarily on their actual symptoms and overall health, rather than solely on the K-index.
On days when you feel worse, simple measures can help:
- getting enough sleep and maintaining a regular daily routine;
- a balanced diet and plenty of water;
- moderate physical activity and walks;
- limiting alcohol and excessive caffeine intake;
- reducing stress;
- For people with chronic conditions: follow your doctor’s treatment plan and keep necessary medications on hand.
No strong magnetic storms are forecast for August 13–14, so there is no cause for particular concern regarding geomagnetic activity.
The forecast is based on data from the NOAA Space Weather Prediction Center (SWPC).
As a reminder, traces of a missing planet the size of the Moon may have been found in the Solar System.
Six planets will line up in a row in late February 2026.
