Solar wind
speed: 388.2 km/sec
density: 7.4 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1329 UT

X-ray Solar Flares
6-hr max: B3 0757 UT Oct11
24-hr: C2 2302 UT Oct10
explanation | more data
Updated: Today at: 1335 UT

Solar wind
speed: 380.0 km/sec
density: 3.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2109 UT

X-ray Solar Flares
6-hr max: B4 2026 UT Oct11
24-hr: C2 2302 UT Oct10
explanation | more data
Updated: Today at: 2115 UT

Solar wind
speed: 380.0 km/sec
density: 3.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2109 UT

X-ray Solar Flares
6-hr max: B4 2026 UT Oct11
24-hr: C2 2302 UT Oct10
explanation | more data
Updated: Today at: 2115 UT

Solar wind
speed: 380.0 km/sec
density: 3.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2109 UT

X-ray Solar Flares
6-hr max: B4 2026 UT Oct11
24-hr: C2 2302 UT Oct10
explanation | more data
Updated: Today at: 2115 UT

Solar wind
speed: 380.0 km/sec
density: 3.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2109 UT

X-ray Solar Flares
6-hr max: B4 2026 UT Oct11
24-hr: C2 2302 UT Oct10
explanation | more data
Updated: Today at: 2115 UT

Solar wind
speed: 461.6 km/sec
density: 10.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0615 UT

X-ray Solar Flares
6-hr max: B9 0146 UT Oct12
24-hr: B9 0146 UT Oct12
explanation | more data
Updated: Today at: 0620 UT

Solar wind
speed: 341.9 km/sec
density: 7.4 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1626 UT

X-ray Solar Flares
6-hr max: B9 1516 UT Oct15
24-hr: B9 1516 UT Oct15
explanation | more data
Updated: Today at: 1630 UT

Solar wind
speed: 409.1 km/sec
density: 10.8 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0842 UT

X-ray Solar Flares
6-hr max: B1 0635 UT Oct16
24-hr: B9 1516 UT Oct15
explanation | more data
Updated: Today at: 0845 UT

Solar wind
speed: 333.5 km/sec
density: 9.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0605 UT

X-ray Solar Flares
6-hr max: B1 0333 UT Oct18
24-hr: B1 0623 UT Oct17
explanation | more data
Updated: Today at: 0610 UT

Solar wind
speed: 351.9 km/sec
density: 10.0 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0656 UT

X-ray Solar Flares
6-hr max: A3 0206 UT Oct19
24-hr: A6 1133 UT Oct18
explanation | more data
Updated: Today at: 0700 UT

Solar wind
speed: 405.9 km/sec
density: 14.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0755 UT

X-ray Solar Flares
6-hr max: A7 0620 UT Oct20
24-hr: A7 0620 UT Oct20
explanation | more data
Updated: Today at: 0800 UT

Solar wind
speed: 516.2 km/sec
density: 8.0 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0955 UT

X-ray Solar Flares
6-hr max: B7 0705 UT Oct21
24-hr: B7 0705 UT Oct21
explanation | more data
Updated: Today at: 1000 UT

Solar wind
speed: 362.9 km/sec
density: 3.4 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1832 UT

X-ray Solar Flares
6-hr max: B3 1402 UT Oct23
24-hr: B9 1838 UT Oct22
explanation | more data
Updated: Today at: 1835 UT

Solar wind
speed: 342.1 km/sec
density: 7.4 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1040 UT

X-ray Solar Flares
6-hr max: B6 0621 UT Oct25
24-hr: B6 0621 UT Oct25
explanation | more data
Updated: Today at: 1045 UT

Solar wind
speed: 336.5 km/sec
density: 6.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1114 UT

X-ray Solar Flares
6-hr max: C7 0604 UT Oct26
24-hr: M1 0247 UT Oct26
explanation | more data
Updated: Today at: 1120 UT

SOMETHING FLARE-Y THIS WAY COMES: Suddenly, the northeastern limb of the sun is bursting with activity. NASA's Solar Dynamics Observatory recorded this frenetic 5-hour sequence during the early hours of Oct. 26th:

At least half a dozen explosions occured during that brief movie. The blast site is hidden just behind the edge of the sun. It's almost certainly an unstable sunspot. The sun's rotation will bring it into view within the next 24-48 hours, creating a geoeffective source of solar activity.

Solar wind
speed: 285.9 km/sec
density: 7.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0824 UT

X-ray Solar Flares
6-hr max: M1 0242 UT Oct29
24-hr: X1 1535 UT Oct28
explanation | more data
Updated: Today at: 0830 UT

Solar wind
speed: 313.5 km/sec
density: 11.7 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0831 UT

X-ray Solar Flares
6-hr max: C3 0315 UT Oct30
24-hr: C3 0315 UT Oct30
explanation | more data
Updated: Today at: 0835 UT

🚨GEOMAGNETIC STORM WARNING: NOAA forecasters say there is an 85% chance of geomagnetic storms on Oct. 30th when a CME (described below) is expected to hit Earth's magnetic field. It could be a strong storm, category G3, which means auroras could descend to mid-latitudes--places like Kansas, Nebraska, Oregon, Virginia. The CME's arrival time is uncertain; estimates range from midday on Oct. 30th to the early hours of Oct. 31st.

Solar wind
speed: 345.1 km/sec
density: 37.2 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1745 UT

X-ray Solar Flares
6-hr max: C3 1529 UT Oct30
24-hr: C3 0315 UT Oct30
explanation | more data
Updated: Today at: 1750 UT