UPDATED GEOMAGNETIC STORM FORECAST: NOAA forecasters say there is a 45% chance of G1 to G2-class geomagnetic storms today, Sept. 27th, in response to a passing CME. If a storm materializes, bright auroras can be expected around the Arctic Circle with a chance for sightings in northern-tier US states.

Solar wind
speed: 488.0 km/sec
density: 7.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0540 UT

X-ray Solar Flares
6-hr max: B6 0540 UT Sep28
24-hr: B6 0540 UT Sep28
explanation | more data
Updated: Today at: 0545 UT

Solar wind
speed: 387.1 km/sec
density: 11.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2330 UT

X-ray Solar Flares
6-hr max: C2 2156 UT Sep29
24-hr: C2 2156 UT Sep29
explanation | more data
Updated: Today at: 2335 UT

Solar wind
speed: 438.4 km/sec
density: 2.0 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0700 UT

X-ray Solar Flares
6-hr max: B3 0103 UT Oct02
24-hr: B8 1100 UT Oct01
explanation | more data
Updated: Today at: 0705 UT

QUIET WEEKEND: Earth's magnetic field is quieting after yesterday's near miss by a passing CME. No geomagnetic storms are expected this weekend. Fortunately, Earth can make its own auroras without a CME.

Solar wind
speed: 416.5 km/sec
density: 3.6 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1950 UT

X-ray Solar Flares
6-hr max: B2 1807 UT Oct02
24-hr: B4 0054 UT Oct02
explanation | more data
Updated: Today at: 1955 UT

Solar wind
speed: 290.2 km/sec
density: 8.7 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0645 UT

X-ray Solar Flares
6-hr max: B1 0358 UT Oct05
24-hr: B2 1556 UT Oct04
explanation | more data
Updated: Today at: 0650 UT

Solar wind
speed: 300.3 km/sec
density: 7.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2010 UT

X-ray Solar Flares
6-hr max: B2 1909 UT Oct05
24-hr: B2 1909 UT Oct05
explanation | more data
Updated: Today at: 2015 UT

Solar wind
speed: 317.4 km/sec
density: 3.3 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1005 UT

X-ray Solar Flares
6-hr max: B3 0409 UT Oct07
24-hr: C5 0246 UT Oct07
explanation | more data
Updated: Today at: 1010 UT

Solar wind
speed: 294.4 km/sec
density: 6.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0735 UT

X-ray Solar Flares
6-hr max: M1 0638 UT Oct09
24-hr: M1 0638 UT Oct09
explanation | more data
Updated: Today at: 0740 UT

Solar wind
speed: 290.5 km/sec
density: 10.6 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2150 UT

X-ray Solar Flares
6-hr max: B6 2110 UT Oct09
24-hr: M1 0638 UT Oct09
explanation | more data
Updated: Today at: 2155 UT

Solar wind
speed: 301.7 km/sec
density: 22.8 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0540 UT

X-ray Solar Flares
6-hr max: B5 2344 UT Oct09
24-hr: M1 0638 UT Oct09
explanation | more data
Updated: Today at: 0545 UT

Solar wind
speed: 303.7 km/sec
density: 16.8 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1546 UT

X-ray Solar Flares
6-hr max: B2 1010 UT Oct10
24-hr: C2 2257 UT Oct09
explanation | more data
Updated: Today at: 1550 UT

GEOMAGNETIC STORM WARNING: NOAA forecasters have modeled the trajectory of yesterday's CME and confirmed that it will likely arrive on Oct. 11th.

The impact could spark G1 to G2-class geomagnetic storms. If a moderately-strong G2-storm materializes, sky watchers in the United States could see auroras as far south as a line connecting New York to Oregon.

Solar wind
speed: 373.6 km/sec
density: 10.2 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0546 UT

X-ray Solar Flares
6-hr max: B6 2349 UT Oct10
24-hr: C2 2302 UT Oct10
explanation | more data
Updated: Today at: 0550 UT

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