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: 2024 May 07 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 May 07-May 09 2024 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown May 07-May 09 2024

             May 07       May 08       May 09
00-03UT       2.00         2.33         2.67     
03-06UT       2.67         2.67         2.67     
06-09UT       2.33         2.67         2.33     
09-12UT       1.67         2.00         2.33     
12-15UT       2.00         2.00         2.33     
15-18UT       2.67         1.00         2.33     
18-21UT       3.00         2.00         2.33     
21-00UT       4.00         2.00         2.00     

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 May 07-May 09 2024

              May 07  May 08  May 09
S1 or greater   25%     25%     25%

Rationale: A chance for a S1 (Minor) solar radiation storm will persist
through 09 May primarily due to the presence and recent flare history of
ARs 3663 and 3664.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R3 levels were observed over the past 24
hours. The largest was at May 06 2024 0635 UTC.

Radio Blackout Forecast for May 07-May 09 2024

              May 07        May 08        May 09
R1-R2           90%           90%           90%
R3 or greater   50%           50%           50%

Rationale: R1-2 (Minor-Moderate) radio blackouts due to M-class flare
activity are expected through 09 May given the evolution of ARs 3663
and 3664 as well as their recent flare history. In addition, a high
chance for an isolated R3 (Strong) radio blackout will persist through
09 May as well given AR 3663s history of X-class flares.