Solar Information


Solar images from SOHO



The Sun Now

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


Sun Spots
Michelson Doppler Imager (MDI) image showing sunspots


MDI Magnetogram
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

Latest Aurora Activity



Solar Cycle


Sun Spot Number Progression
Graph showing Sun Spot Number Progression

Last 5 cycles Sun Spot Number Progression
Last 5 cycles Sun Spot Number Progression



Solar Wind

Latest Solar Wind Data



3-day Solar-Geophysical Forecast

:Product: 3-Day Forecast
:Issued: 2021 Sep 16 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 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 16-Sep 18 2021 is 4 (below NOAA
Scale levels).

NOAA Kp index breakdown Sep 16-Sep 18 2021

            Sep 16     Sep 17     Sep 18
00-03UT        1          2          4     
03-06UT        2          2          4     
06-09UT        1          2          3     
09-12UT        0          2          3     
12-15UT        1          3          3     
15-18UT        1          3          2     
18-21UT        2          4          3     
21-00UT        2          4          3     

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-16 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 16-Sep 18 2021

              Sep 16  Sep 17  Sep 18
S1 or greater    1%      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 Sep 16-Sep 18 2021

              Sep 16        Sep 17        Sep 18
R1-R2            1%            1%            1%
R3 or greater    1%            1%            1%

Rationale: No R1 (Minor) or greater radio blackouts are expected.  No
significant active region flare activity is forecast.