Solar Information

Solar images from SOHO

The Sun Now

Extreme ultraviolet Imaging Telescope image at 284 Angstrom (to 2 million degrees K)



Michelson Doppler Imager (MDI) image showing sunspots



Magnetogram image showing magnetic field, black and white show opposite polarities

Information from the Space Weather Prediction Center, Boulder, CO
National Oceanic and Atmospheric Administration (NOAA)

Aurora Activity

Solar Cycle

Sun Spot Number Progression

Last 5 cycles Sun Spot Number Progression

Solar Wind

3-day Solar-Geophysical Forecast

:Product: 3-Day Forecast
:Issued: 2026 Jun 05 1230 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 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 05-Jun 07 2026 is 6.67 (NOAA Scale
G3).

NOAA Kp index breakdown Jun 05-Jun 07 2026

             Jun 05       Jun 06       Jun 07
00-03UT       1.33         4.33         3.00     
03-06UT       3.33         4.00         3.00     
06-09UT       2.00         4.00         2.00     
09-12UT       2.33         3.00         2.67     
12-15UT       6.67 (G3)    2.33         2.67     
15-18UT       5.67 (G2)    2.67         2.67     
18-21UT       4.67 (G1)    3.33         2.00     
21-00UT       3.67         3.67         2.67     

Rationale: Periods of G1-G3 (Minor-Strong) geomagnetic storming are
likely on 05 Jun, with a chance for G4 (Severe) storm periods, due to
the anticipated arrival of multiple CMEs that left the Sun on 03 Jun.

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 05-Jun 07 2026

              Jun 05  Jun 06  Jun 07
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 05-Jun 07 2026

              Jun 05        Jun 06        Jun 07
R1-R2           50%           50%           50%
R3 or greater   10%           10%           10%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
with a slight chance for R3 (Strong) or greater events, over 05-07 Jun.