last update
11:36 UTC
SFI: 72 | Ap index:  6  | Kp index:  1  ( 1 @12:15,  1 @15:15) | X-ray flux:  A4.6 
SW: Density= 1.0 p/cm3 | Speed= 456.8 km/s | Temp=40(x1000)K
IMF: Bx=-1.3nT | By=1.5nT | Bz= 1.7 nT | Bt= 2.7 nT | Lat= 40.7 ° | Lon=132.2°
Sunspots: 12 | Area: 10 10-6/Hemi | New regions: 0
[i]X-ray flares: C=0 M=0 X=0 | Optical flares: M1=0 M2=0 M3=0 | Sub-flares=0
Live data from the Geostationary Operational Environmental Satellite(s) (GOES)
X-ray flux [res:60s/300s]

Measured by the GOES satellites (current satellite(s): GOES-15 and GOES-13). Spikes are considered significant when they rise above the "M" (10-5W/m2) level. The plot shows the solar X-ray output in the 1-8Å (0.1-0.8 nm) and 0.5-4.0Å (0.05-0.4 nm) passbands.
Current solar X-ray flux
Proton flux [res:300s]

Current 5-minute averaged integral proton flux. At the moment the levels are measured by the SWPC secondary GOES satellite (GOES-13). SWPC`s proton event threshold is 10 protons/cm2s-1sr-1 at >=10 MeV.
Current solar proton flux plot
Electron flux [res:300s]

Current 5-minute averaged integral electron flux. The plot shows flux with energies >=0.8 MeV/>=0.8 MeV and >=2 MeV/>=2 MeV at GOES-13 (W75) and GOES-15 (W135). The data in this plot is invalid during a significant proton event because of sensor contamination at the GOES spacecraft.
Current solar electron flux plot
Magnetic field [res:60s]

Current 1-minute averaged parallel component of the magnetic field. Measured in nanoTeslas (nT) at GOES-13 (W75) and GOES-15 (W135)
Current magnetic field plot
SXI [res:900s]

The GOES 12 through 15 spacecraft each carry a sophisticated Solar X-ray Imager to monitor the Sun’s X-rays for the early detection of solar flares, coronal mass ejections, and other phenomena that impact the geospace environment. This early warning is important because travelling solar disturbances affect not only the safety of humans in high-altitude missions, such as human spaceflight, but also military and commercial satellite communications. In addition, coronal mass ejections can damage long-distance electric power grids, causing extensive power blackouts.

SXI videos (updated daily)

Latest 27 days: GOES 13 | GOES 14 | GOES 15
Latest 14 days: GOES 13 | GOES 14 | GOES 15
Latest 3 days: GOES 13 | GOES 14 | GOES 15
Current X-ray image of the Sun

Additional data

Kp Index (estimated)
The Estimated 3-hour Planetary K index is derived at the NOAA SWPC using data from ground-based magnetometers in Boulder (Colorado), Chambon la Foret (France), Fredericksburg (Virginia), Fresno (California), Hartland (UK), Newport (Washington), Sitka (Alaska) and Jeju (Korea). Kp indices of 5 or greater indicate storm-level geomagnetic activity.
Current Kp index plot
D Region Absorption Predictions

Conditions in the D region of the ionosphere have a dramatic effect on high frequency (HF) communications and low frequency (LF) navigation systems. The global D Region Absorption Predictions (D-RAP) depicts the D region at high latitudes where it is driven by particles as well as low latitudes, where photons cause the prompt changes.

D region absorption map
1dB ABS | 5MHz | 10MHz | 15MHz | 20MHz | 25MHz | 30MHz


Strongest X-ray solar flares recorded


1 04-11-03 X28+*
2 02-04-01 X20.0
2 16-08-89 X20.0
3 28-10-03 X17.2
4 07-09-05 X17.0
5 06-03-89 X15.0
5 11-07-78 X15.0
6 15-04-01 X14.4
7 24-04-84 X13.0
7 19-10-89 X13.0
8 15-12-82 X12.9
9 06-06-82 X12.0
9 01-06-91 X12.0
9 04-06-91 X12.0
9 06-06-91 X12.0
9 11-06-91 X12.0
9 15-06-91 X12.0
10 17-12-82 X10.1
10 20-05-84 X10.1
11 29-10-03 X10.0
11 25-01-91 X10.0
11 09-06-91 X10.0
12 09-07-82 X9.8
12 29-09-89 X9.8
13 22-03-91 X9.4
13 06-11-97 X9.4
14 24-05-90 X9.3
15 05-12-06 X9.0
15 06-11-80 X9.0
15 02-11-92 X9.0
* Taking a different route, researchers from the University of Otago used radio wave-based measurements of the x-rays' effects on the Earth's upper atmosphere to revise the flare's size from a merely huge X28 to a "whopping" X45, say researchers Neil Thomson, Craig Rodger, and Richard Dowden.

Courtesy of NOAA/SWPC.

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