Magnetic storms today
State of the magnetosphere on 6/12/2026. Kp index, storm classification and a 72-hour forecast.
Magnetosphere is quiet. No geomagnetic disturbances expected.
Solar wind
DSCOVR · L1Last 24 hours
NOAA 3-day forecast
NOAA SWPC 3-day forecast (raw text)
:Product: 3-Day Forecast
:Issued: 2026 Jun 12 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast
The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Jun 12-Jun 14 2026 is 5.67 (NOAA Scale
G2).
NOAA Kp index breakdown Jun 12-Jun 14 2026
Jun 12 Jun 13 Jun 14
00-03UT 4.67 (G1) 4.67 (G1) 4.67 (G1)
03-06UT 3.67 3.33 4.00
06-09UT 2.33 5.67 (G2) 3.33
09-12UT 2.33 3.00 3.33
12-15UT 2.00 4.67 (G1) 2.67
15-18UT 3.33 5.00 (G1) 2.67
18-21UT 3.33 4.33 3.67
21-00UT 4.67 (G1) 4.33 4.00
Rationale: Geomagnetic field conditions are expected to reach G1 (Minor)
geomagnetic storming on 12 June under anticipated -CH HSS effects. G2
(Moderate) geomagnetic storming levels are likely on 13 June
due to the persistence of the high-speed stream and the arrival of the
disturbances caused by the CMEs that left the Sun on 09 and 11 June. G1
(Minor) levels are likely on 14 June, as the CMEs effects wane.
B. NOAA Solar Radiation Activity Observation and Forecast
Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.
Solar Radiation Storm Forecast for Jun 12-Jun 14 2026
Jun 12 Jun 13 Jun 14
S1 or greater 5% 5% 5%
Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jun 12-Jun 14 2026
Jun 12 Jun 13 Jun 14
R1-R2 45% 45% 45%
R3 or greater 10% 10% 10%
Rationale: There is a high chance for R1-R2 (Minor-Moderate) radio
blackouts, and a slight chance for isolated R3 (Strong) events, mostly
due to the flare potential of Region 4465.
More about today's magnetic storm
Today the planetary Kp = 0.0 (quiet). The maximum over the last 24 hours reached Kp = 5.0 (G1). Readings arrive from NOAA every 60 seconds; the table above shows the last 24 hours in 3-hour steps — the standard Kp calculation period.
How a magnetic storm forms: the Sun releases streams of charged particles — the solar wind and coronal mass ejections (CMEs). Reaching Earth in 1–3 days they compress the magnetosphere and cause fluctuations in the surface magnetic field, which ground-based magnetometers register as the Kp index.
On this page you can see the current Kp on a dial, the hourly table for the last 24 hours, the official NOAA 3-day forecast and a description of the current G1–G5 storm level. During a G1+ storm weather-sensitive people may notice blood-pressure swings, headaches or sleep changes — staying hydrated and avoiding intense physical load is advised.
Hourly dynamics over the last 24 hours. Kp peaked at 5.0 around 18:00 UTC and bottomed out at 2.3 near 12:00 UTC. The trend over the past 6 hours is easing — the magnetosphere is moving into recovery.
Dst and storm days this month. The Dst index right now is 0 nT — a quiet ring current. Unlike Kp, which is reported in 3-hour windows, Dst refreshes every hour and is considered the primary measure of a geomagnetic storm's magnitude. So far this month the planet has logged 2 days reaching G1 or stronger.
Solar-wind context for today. The stream from the Sun is flowing at 492 km/s with density 12.8 protons/cm³, and the IMF Bz is -1.8 nT — close to zero with no coherent coupling right now. DSCOVR at L1 refreshes these values every minute and is the most forward-looking signal for whether a storm is building up.