THE SOLAR WIND HAS ARRIVED: Earth is inside a stream of solar wind flowing from a loosely organized cluster of holes in the sun's atmosphere. Geomagnetic storms are not expected at this time. However, lesser geomagnetic unrest and bright auroras are possible inside the Arctic Circle.

Solar wind
speed: 490.1 km/sec
density: 7.0 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1422 UT

X-ray Solar Flares
6-hr max: C1 0939 UT Feb28
24-hr: C1 0939 UT Feb28
explanation | more data
Updated: Today at: 1435 UT

Solar wind
speed: 537.2 km/sec
density: 8.1 protons/cm3
Updated: Today at 0736 UT

X-ray Solar Flares
6-hr max: B3 0608 UT Mar01
24-hr: C1 0939 UT Feb28
Updated: Today at: 0740 UT

Daily Sun: 01 Mar 22


All of these sunspots have simple, stable magnetic fields that pose no threat for strong flares. This situation could soon change, however, because AR2956, 57 and 58 are growing rapidly. Credit: SDO/HMI

Current Auroral Oval:

Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 2 quiet
explanation | more data

Interplanetary Mag. Field
Btotal: 5.4 nT
Bz: -2.9 nT south
more data: ACE, DSCOVR
Updated: Today at 0735 UT

Coronal Holes: 01 Mar 22



Solar wind flowing from this equatorial coronal hole could reach Earth on March 4th. Credit: SDO/AIA

SOLAR WIND STREAM APPROACHES EARTH: A stream of solar wind is approaching Earth. Estimated time of arrival: March 4th. The gaseous material is flowing from an equatorial hole in the sun's atmosphere, and it could spark minor geomagnetic storms when it arrives. #spaceweather #solar #wind

Solar wind
speed: 460.9 km/sec
density: 5.0 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1540 UT

X-ray Solar Flares
6-hr max: C3 0945 UT Mar02
24-hr: C3 0944 UT Mar02
explanation | more data
Updated: Today at: 1545 UT

Daily Sun: 02 Mar 22

Sunspot AR2957 merits watching. It is growing rapidly. Credit: SDO/HMI

Current Auroral Oval:


Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 2 quiet
explanation | more data

Interplanetary Mag. Field
Btotal: 3.0 nT
Bz: -1.2 nT south
more data: ACE, DSCOVR
Updated: Today at 1540 UT

Coronal Holes: 02 Mar 22



Solar wind flowing from this equatorial coronal hole could reach Earth on March 4-5. Credit: SDO/AIA

FARSIDE SUNSPOT: NASA's STEREO-A spacecraft is monitoring a large ultraviolet hotspot behind the sun's northeastern limb. It is definitely a concentration of hot plasma and magnetic fields; it might be an active sunspot. We will soon find out as it rotates into view before the end of the week.

THE TERMINATION EVENT HAS ARRIVED: Something big just happened on the sun. Solar physicists Scott McIntosh (NCAR) and Bob Leamon (U. Maryland-Baltimore County) call it "The Termination Event."

"Old Solar Cycle 24 has finally died--it was terminated!" says McIntosh. "Now the new solar cycle, Solar Cycle 25, can really take off."

The "Termination Event" is a new idea in solar physics, outlined by McIntosh and Leamon in a December 2020 paper in the journal Solar Physics. Not everyone accepts it--yet. If Solar Cycle 25 unfolds as McIntosh and Leamon predict, the Termination Event will have to be taken seriously.

Solar wind
speed: 367.2 km/sec
density: 8.9 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1425 UT

X-ray Solar Flares
6-hr max: B5 0845 UT Mar03
24-hr: M2 1739 UT Mar02
explanation | more data
Updated: Today at: 1430 UT

Daily Sun: 03 Mar 22


Sunspot AR2957 has a 'beta-gamma' magnetic field that harbors energy for M-class solar flares. Credit: SDO/HMI

Current Auroral Oval:


Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 1 quiet
explanation | more data

Interplanetary Mag. Field
Btotal: 3.8 nT
Bz: -0.7 nT south
more data: ACE, DSCOVR
Updated: Today at 1425 UT

Coronal Holes: 03 Mar 22



Solar wind flowing from this equatorial coronal hole could reach Earth on March 5. Credit: SDO/AIA

SOLAR WIND STREAM APPROACHES EARTH: A stream of solar wind is approaching Earth. Estimated time of arrival: March 5th.

The gaseous material is flowing from an equatorial hole in the sun's atmosphere, and it could spark minor geomagnetic storms when it arrives.