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

Solar Wind

3-day Solar-Geophysical Forecast

:Product: 3-Day Forecast
:Issued: 2025 Oct 09 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 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 09-Oct 11 2025 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Oct 09-Oct 11 2025

             Oct 09       Oct 10       Oct 11
00-03UT       3.00         1.67         2.33     
03-06UT       2.67         1.67         2.00     
06-09UT       2.00         1.67         2.33     
09-12UT       1.67         1.00         2.00     
12-15UT       1.33         1.33         2.33     
15-18UT       1.33         1.33         3.33     
18-21UT       1.67         1.33         3.67     
21-00UT       1.67         1.67         4.00     

Rationale: No G1 (Minor) or greater geomagnetic storms are expected.  No
significant transient or recurrent solar wind features are forecast.

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 Oct 09-Oct 11 2025

              Oct 09  Oct 10  Oct 11
S1 or greater    5%      1%      1%

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 Oct 09-Oct 11 2025

              Oct 09        Oct 10        Oct 11
R1-R2           10%           25%           25%
R3 or greater    1%            5%            5%

Rationale: A slight chance for R1-2 (Minor-Moderate) radio blackouts
will remain for 09 Oct. R1-2 (Minor-Moderate) probabilities increase to
a low chance on 10 Oct with the prospect of regions due to return.