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: 2025 Nov 01 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 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Nov 01-Nov 03 2025 is 4.33 (below NOAA
Scale levels).

NOAA Kp index breakdown Nov 01-Nov 03 2025

             Nov 01       Nov 02       Nov 03
00-03UT       3.00         3.00         2.67     
03-06UT       3.00         2.33         3.67     
06-09UT       2.67         2.00         3.00     
09-12UT       2.67         4.33         2.67     
12-15UT       3.67         3.33         2.33     
15-18UT       2.67         3.00         2.33     
18-21UT       2.67         2.33         2.00     
21-00UT       3.33         3.33         2.67     

Rationale: No G1 (Minor) or greater geomagnetic storms are expected.

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 Nov 01-Nov 03 2025

              Nov 01  Nov 02  Nov 03
S1 or greater    5%     10%     10%

Rationale: There is a slight chance for the greater than 10 MeV proton
flux to reach S1 (Minor) levels on 02-03 Nov due to returning active
regions.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Nov 01-Nov 03 2025

              Nov 01        Nov 02        Nov 03
R1-R2           25%           30%           30%
R3 or greater    5%           10%           10%

Rationale: Solar activity is expected to be low with an increasing
chance for M-class flares (R1-R2, Minor-Moderate) on 01-03 Nov and a
slight chance for X-class flares (R3, Strong) on 02-03 Nov due to the
return of old Regions 4246 (N24, L=290) and 4248 (N07, L=262).