Wednesday, April 9, 2025, promises to be quite calm in terms of the geomagnetic situation. According to experts, no significant magnetic storms are predicted for this day. Although minor solar activity is still observed, it will not have a serious impact on the Earth, writes IZ. Let's consider in more detail what exactly is happening on the Sun and what should be expected by people sensitive to changes in the geomagnetic background.
Content
- The situation on the Sun: flares and spots
- Magnetic activity forecast for April 9
- What is the K-index and why is it important?
- Tips for weather-sensitive people
The situation on the Sun: flares and spots
The Sun has remained relatively quiet over the past 24 hours. Four C-class flares have been recorded, the lowest level of solar flares that do not have a significant impact on Earth. Such activity does not cause magnetic storms, but it does indicate some dynamics on the star's surface.
There are currently 76 sunspots on the surface of the Sun. This is a normal indicator that does not cause alarm. At the same time, there is a moderate probability of flares of higher classes – in particular, the possibility of an M-class flare is estimated at 55%, and an X-class flare is estimated at 10%.
Magnetic activity forecast for April 9
According to the meteoagent service, geomagnetic activity is expected to be at a K-index level of 3 on April 9. This means that only a slight disturbance of the Earth's magnetic field is possible. This level is considered “green” – that is, safe – and is not a cause for serious concern. The forecast indicators for this day look like this:
- Possibility of a weak geomagnetic storm — 10%
- The probability of a powerful geomagnetic storm is 1%.
- Probability of an M-class flare is 55%
- Probability of an X-class outbreak — 10%
- Number of sunspots — 76
What is the K-index and why is it important?
The K-index is a numerical indicator that reflects the level of disturbance in the Earth's magnetic field. It ranges from 0 to 9, where:
- values from 0 to 3 indicate a calm geomagnetic state,
- value 4 means unstable level,
- from 5 and above – these are magnetic storms of varying strength.
On April 9, the K-index value is 3 — a low level of activity that usually does not have a negative impact on the health of most people. However, for weather-sensitive individuals, even this level can be noticeable.
Tips for weather-sensitive people
Even weak geomagnetic fluctuations can affect the well-being of weather-dependent people. On such days, doctors recommend following simple but effective tips to avoid discomfort:
- Drink more water — dehydration can worsen your overall well-being.
- Limit stress — try to avoid conflicts and overload at work.
- Follow your sleep schedule – getting enough rest helps your body adapt better to changes.
- Control your blood pressure – this is especially true for people with cardiovascular diseases.
- Avoid drinking alcohol and strong coffee – this can increase the strain on the cardiovascular system.
Elderly people, those who suffer from hypertension, vegetative-vascular dystonia, chronic headaches, or those undergoing recovery from a heart attack or stroke should be especially careful.
Further updates on magnetic storms and solar activity are expected daily, so keep an eye on the forecasts to be prepared for changes.
As a reminder, we previously wrote about the main periods of magnetic storms in April.