Solar wind
speed: 385.0 km/sec
density: 4.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0949 UT

X-ray Solar Flares
6-hr max: A9 0532 UT Nov12
24-hr: B4 1828 UT Nov11
explanation | more data
Updated: Today at: 0955 UT

FARSIDE SOLAR ACTIVITY: Space weather near Earth is calm, but the sun is not quiet. This week, SOHO coronagraphs have observed multiple CMEs billowing over the western edge of the sun. The source is a farside sunspot group, probably the same one that produced a strong M2-class solar flare on Nov. 9th. Earth is not in the line of fire, for now.

Solar wind
speed: 342.9 km/sec
density: 5.7 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1515 UT

X-ray Solar Flares
6-hr max: B1 1507 UT Nov13
24-hr: C1 0843 UT Nov13
explanation | more data
Updated: Today at: 1520 UT

QUIET WITH A CHANCE OF FLARES: Solar activity is low. However, sunspot AR2894 has developed an unstable 'beta-gamma' magnetic field that could erupt this weekend. NOAA forecasters estimate a 5% chance of M-class flares during the next 24 hours.

Solar wind
speed: 312.8 km/sec
density: 13.4 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1440 UT

X-ray Solar Flares
6-hr max: B1 1231 UT Nov14
24-hr: B1 1507 UT Nov13
explanation | more data
Updated: Today at: 1445 UT

Solar wind
speed: 313.0 km/sec
density: 15.7 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0241 UT

X-ray Solar Flares
6-hr max: B1 0100 UT Nov15
24-hr: B1 1845 UT Nov14
explanation | more data
Updated: Today at: 0245 UT

Solar wind
speed: 352.6 km/sec
density: 15.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1546 UT

X-ray Solar Flares
6-hr max: B2 1005 UT Nov15
24-hr: B2 1005 UT Nov15
explanation | more data
Updated: Today at: 1550 UT

A DENSE STREAM OF SOLAR WIND: Unexpectedly, Earth is entering a slow-moving but dense stream of solar wind on Nov. 15th. Relatively strong magnetic fields in the stream are opening a crack in Earth's magnetosphere, setting the stage for possible Arctic auroras.

Solar wind
speed: 601.7 km/sec
density: 6.8 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1727 UT

X-ray Solar Flares
6-hr max: B1 1503 UT Nov16
24-hr: B2 0748 UT Nov16
explanation | more data
Updated: Today at: 1730 UT

LEONID METEOR SHOWER: Earth is entering a stream of debris from Comet Tempel-Tuttle, source of the annual Leonid meteor shower. In some years, dense ribbons of comet dust produce Leonid meteor storms. 2021 is not a storm year. Forecasters expect no more than 10 to 15 meteors per hour when the shower peaks on Nov. 17th.

Solar wind
speed: 591.7 km/sec
density: 1.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1510 UT

X-ray Solar Flares
6-hr max: B2 1505 UT Nov17
24-hr: B2 0453 UT Nov17
explanation | more data
Updated: Today at: 1515 UT

THE SOLAR WIND IS BLOWING: Earth is inside a stream of solar wind flowing from a southern hole in the sun's atmosphere. With wind speeds near 600 km/s, the stream is causing minor geomagnetic unrest around the Arctic Circle. Polar auroras are likely on Nov. 17th.

Solar wind
speed: 497.9 km/sec
density: 6.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1932 UT

X-ray Solar Flares
6-hr max: B1 1546 UT Nov18
24-hr: B1 1546 UT Nov18
explanation | more data
Updated: Today at: 1935 UT

THE NEXT SOLAR WIND STREAM: Earth is exiting one solar wind stream. Another is on the way. Flowing from a southern hole in the sun's atmosphere, the gaseous material is due to arrive on Nov 21-22. NOAA forecasters say that a corotating interaction region (CIR) traveling just ahead of the stream could spark geomagnetic activity and Arctic auroras on Nov. 20th.

Solar wind
speed: 450.3 km/sec
density: 6.3 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1255 UT

X-ray Solar Flares
6-hr max: A1 1007 UT Nov19
24-hr: B1 1546 UT Nov18
explanation | more data
Updated: Today at: 1300 UT

🔥 Solar wind
speed: 600.6 km/sec
density: 9.2 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0151 UT

X-ray Solar Flares
6-hr max: A3 0033 UT Nov21
24-hr: A7 1536 UT Nov20
explanation | more data
Updated: Today at: 0155 UT

QUIET SUN: Solar activity is very low. There are two sunspots on the solar disk, but both are small and inactive. NOAA forecasters say the chance of strong flares today is no more than 1%.

Solar wind
speed: 637.9 km/sec
density: 8.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1310 UT

X-ray Solar Flares
6-hr max: B1 1235 UT Nov21
24-hr: B1 1235 UT Nov21
explanation | more data
Updated: Today at: 1315 UT

THE SOLAR WIND HAS ARRIVED: As predicted, a stream of solar wind is gently buffeting Earth's magnetic field today. The gaseous material is flowing from a southern hole in the sun's atmosphere. So far, the weakly-magnetized stream is doing little to cause geomagnetic activity.

Solar wind
speed: 521.2 km/sec
density: 7.8 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2155 UT

X-ray Solar Flares
6-hr max: A2 1826 UT Nov22
24-hr: A4 2158 UT Nov21
explanation | more data
Updated: Today at: 2200 UT

NO CHANCE OF FLARES TODAY: The chance of strong flares today is no more than 1%, according to NOAA forecasters. There are two sunspots on the solar disk; both have stable magnetic fields that are unlikely to erupt.