🔥 Solar wind
speed: 447.9 km/sec
density: 4.2 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0408 UT

X-ray Solar Flares
6-hr max: B6 2214 UT Jul19
24-hr: C1 1907 UT Jul19
explanation | more data
Updated: Today at: 0415 UT

X-FLARE SUNSPOT RETURNS: On July 3rd, sunspot AR2838 unleashed the first X-flare of Solar Cycle 25, then promptly departed on a 2-week journey around the farside of the sun.

It's back. The formerly-flaring sunspot is quietly rotating over the sun's northeastern limb, right here. Has it spent its fury since we last saw it--or does some remain? Stay tuned.

Solar wind
speed: 384.6 km/sec
density: 12.3 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0605 UT

X-ray Solar Flares
6-hr max: B3 0037 UT Jul21
24-hr: C1 2327 UT Jul20
explanation | more data
Updated: Today at: 0610 UT

SIDEWAYS SOLAR FLARE: A filament of magnetism near sunspot AR2846 erupted yesterday, sparking a B-class solar flare and hurling a cloud of plasma into space.

Normally, the location of the blast site would rule out an impact on Earth. However, the explosion's debris squirted out sideways. See the movie. NOAA analysts are evaluating the possibility of a glancing blow later this week.

Solar wind
speed: 428.7 km/sec
density: 2.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1854 UT

X-ray Solar Flares
6-hr max: B4 1316 UT Jul22
24-hr: C1 2005 UT Jul21
explanation | more data
Updated: Today at: 1900 UT

A CRACK IN EARTH'S MAGNETIC FIELD: During the early hours of July 22nd (0330 - 1000 UT) a crack opened in Earth's magnetic field: data. Solar wind poured in, fueling a period of geomagnetic unrest (Kp=4). So far no reports of auroras have been received, probably due to the glare of northern summer sunlight. Quiet conditions have since resumed.

Solar wind
speed: 389.4 km/sec
density: 4.8 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0545 UT

X-ray Solar Flares
6-hr max: B4 0219 UT Jul23
24-hr: B4 1316 UT Jul22
explanation | more data
Updated: Today at: 0550 UT

Solar wind
speed: 358.6 km/sec
density: 3.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0816 UT

X-ray Solar Flares
6-hr max: B8 0219 UT Jul24
24-hr: C4 0033 UT Jul24
explanation | more data
Updated: Today at: 0820 UT

Solar wind
speed: 332.0 km/sec
density: 3.6 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1500 UT

X-ray Solar Flares
6-hr max: B3 0905 UT Jul24
24-hr: C4 0033 UT Jul24
explanation | more data
Updated: Today at: 1505 UT

Solar wind
speed: 321.0 km/sec
density: 3.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0745 UT

X-ray Solar Flares
6-hr max: B2 0457 UT Jul25
24-hr: B4 0816 UT Jul24
explanation | more data
Updated: Today at: 0750 UT

ALL QUIET ALERT: A CME expected to hit Earth on July 23rd or 24th has missed. Our planet's magnetic field is quiet and should remain so until July 28th when a new stream of solar wind arrives. The gaseous material is flowing from a sinuous hole in the sun's atmosphere.

Solar wind
speed: 317.9 km/sec
density: 4.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0450 UT

X-ray Solar Flares
6-hr max: B2 2349 UT Jul25
24-hr: B2 0457 UT Jul25
explanation | more data
Updated: Today at: 0455 UT

GEOMAGNETIC FORECAST: Today, Earth's magnetic field is quiet. It should stay that way until July 28th when a narrow stream of solar wind arrives. The gaseous material is flowing from a sinuous hole in the sun's atmosphere. The stream's arrival is expected to trigger minor (Kp=4) geomagnetic unrest.

Solar wind
speed: 322.6 km/sec
density: 10.8 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0624 UT

X-ray Solar Flares
6-hr max: B1 0213 UT Jul27
24-hr: B2 1609 UT Jul26
explanation | more data
Updated: Today at: 0630 UT

🔥 Solar wind
speed: 507.6 km/sec
density: 8.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1340 UT

X-ray Solar Flares
6-hr max: B2 0744 UT Jul28
24-hr: B9 2226 UT Jul27
explanation | more data
Updated: Today at: 1345 UT

THE SOLAR WIND HAS ARRIVED: Earth is entering a stream of solar wind flowing ~400 km/s from a sinuous hole in the sun's atmosphere. First contact during the early hours of July 28th opened a crack in Earth's magnetic field, sparking an hours-long episode of minor (Kp=4) geomagnetic unrest. So far, no auroras have been reported.

🔥Solar wind
speed: 541.7 km/sec
density: 7.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0600 UT

X-ray Solar Flares
6-hr max: A8 0147 UT Jul29
24-hr: B6 0738 UT Jul28
explanation | more data
Updated: Today at: 0605 UT

Solar wind
speed: 444.0 km/sec
density: 3.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0620 UT

X-ray Solar Flares
6-hr max: A7 0039 UT Jul30
24-hr: B1 1934 UT Jul29
explanation | more data
Updated: Today at: 0625 UT

Solar wind
speed: 442.7 km/sec
density: 9.4 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0854 UT

X-ray Solar Flares
6-hr max: A5 0658 UT Jul31
24-hr: A5 1913 UT Jul30
explanation | more data
Updated: Today at: 0900 UT

Solar wind
speed: 387.3 km/sec
density: 4.2 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1541 UT

X-ray Solar Flares
6-hr max: A5 0946 UT Aug01
24-hr: B2 1748 UT Jul31
explanation | more data
Updated: Today at: 1545 UT

Solar wind
speed: 360.1 km/sec
density: 6.5 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0315 UT

X-ray Solar Flares
6-hr max: A8 0145 UT Aug03
24-hr: B1 1835 UT Aug02
explanation | more data
Updated: Today at: 0320 UT