Solar wind
speed: 387.0 km/sec
density: 9.7 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0910 UT

X-ray Solar Flares
6-hr max: B2 0341 UT Aug31
24-hr: C3 2134 UT Aug30
explanation | more data
Updated: Today at: 0915 UT

Solar wind
speed: 336.5 km/sec
density: 9.4 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1920 UT

X-ray Solar Flares
6-hr max: C1 1331 UT Sep01
24-hr: C1 1331 UT Sep01
explanation | more data
Updated: Today at: 1925 UT

GEOMAGNETIC STORM WATCH: Earth's magnetic field is about to get jolted by a pair of CMEs. Estimated time of arrival: Sept. 1-2. NOAA forecasters expect geomagnetic storms as strong as category G2. That means people as far south as Idaho and New York (geomagnetic latitude 55 deg.) could see auroras.

Solar wind
speed: 320.2 km/sec
density: 9.2 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0434 UT

X-ray Solar Flares
6-hr max: B3 0352 UT Sep02
24-hr: C1 1331 UT Sep01
explanation | more data
Updated: Today at: 0440 UT

WAITING FOR THE CMEs: NOAA forecasters say G1 to G2-class geomagnetic storms are possible on Sept. 2nd when a pair of CMEs is expected to double-tap Earth's magnetic field. The last time a G2-class storm occured (March 20, 2021), beautiful auroras spread across northern-tier US states. The forecast calls for déjà vu.

Solar wind
speed: 356.3 km/sec
density: 7.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1705 UT

X-ray Solar Flares
6-hr max: B4 1150 UT Sep02
24-hr: B4 1150 UT Sep02
explanation | more data
Updated: Today at: 1710 UT

Solar wind
speed: 372.5 km/sec
density: 6.4 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1810 UT

X-ray Solar Flares
6-hr max: B2 1427 UT Sep02
24-hr: B4 1150 UT Sep02
explanation | more data
Updated: Today at: 1815 UT

😔 GEOMAGNETIC STORM--CANCELLED: NOAA forecasters no longer believe that a G2-class geomagnetic storm is likely today. The CMEs thought to be heading our way are either late or have missed altogether. Either way, the chance of a significant storm is diminished.

Solar wind
speed: 359.9 km/sec
density: 10.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1210 UT

X-ray Solar Flares
6-hr max: B8 0750 UT Sep04
24-hr: B8 0223 UT Sep04
explanation | more data
Updated: Today at: 1215 UT

Solar wind
speed: 345.1 km/sec
density: 9.8 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0118 UT

X-ray Solar Flares
6-hr max: B4 2133 UT Sep04
24-hr: B8 0223 UT Sep04
explanation | more data
Updated: Today at: 0125 UT

Solar wind
speed: 307.2 km/sec
density: 14.2 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0649 UT

X-ray Solar Flares
6-hr max: B7 0156 UT Sep07
24-hr: B7 0156 UT Sep07
explanation | more data
Updated: Today at: 0655 UT

MINOR CME HEADING OUR WAY, MAYBE: On Sept. 5th, decaying sunspot AR2865 produced a B7-class solar flare. The explosion sent a shadowy shock wave rippling through the sun's lower atmosphere and may have hurled a faint CME toward Earth. If so, we would feel its effects on Sept. 8-9. High-latitude sky watchers should be alert for auroras.

Solar wind
speed: 372.2 km/sec
density: 16.0 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1905 UT

X-ray Solar Flares
6-hr max: B4 1620 UT Sep07
24-hr: C1 0934 UT Sep07
explanation | more data
Updated: Today at: 1910 UT

Solar wind
speed: 409.3 km/sec
density: 3.7 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0654 UT

X-ray Solar Flares
6-hr max: B4 0612 UT Sep09
24-hr: C8 1730 UT Sep08
explanation | more data
Updated: Today at: 0700 UT

WILL EARTH DODGE ANOTHER CME? Yesterday, Sept. 8th @ 0009 UT, sunspot AR2864 erupted, producing a C2-class solar flare. The explosion sent a global shock wave rippling through the sun's atmosphere and hurled a lopsided CME into space. NOAA analysts are modeling the CME's trajectory now to determine if it might strike Earth. Stay tuned!

Solar wind
speed: 365.7 km/sec
density: 9.0 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1100 UT

X-ray Solar Flares
6-hr max: B4 1049 UT Sep10
24-hr: B8 1716 UT Sep09
explanation | more data
Updated: Today at: 1105 UT

A LOPSIDED CME IS COMING: Last week, 3 CMEs missed Earth. Will this week be different?

Another CME is on the way following an explosion in the magnetic canopy of sunspot AR2864 on Sept. 8th. NOAA analysts believe Earth could experience a glancing blow or near miss late on Sept. 11th.

Solar wind
speed: 313.4 km/sec
density: 11.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1210 UT

X-ray Solar Flares
6-hr max: B6 0728 UT Sep11
24-hr: C1 2134 UT Sep10
explanation | more data
Updated: Today at: 1215 UT