CHANCE OF FLARES: The sun has quieted this weekend with some minor decay in sunspot complex AR2993-94. Nevertheless, there is still a chance of flares: a 40% chance of M-flares and a 10% chance of X-flares on April 24th, according to NOAA. Any eruptions will be Earth directed.

Solar wind
speed: 432.0 km/sec
density: 2.21 protons/cm3
Updated: Today at 1142 UT

X-ray Solar Flares
6-hr max: C4 0604 UT Apr25
24-hr: M1 0201 UT Apr25
Updated: Today at: 1145 UT

Daily Sun: 25 Apr 22

Sunspot complex AR2993-94 poses a continued threat for M-class solar flares. Credit: SDO/HMI

Current Auroral Oval:

Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 1 quiet

Interplanetary Mag. Field
Btotal: 4.46 nT
Bz: -1.30 nT south
Updated: Today at 1142 UT

Coronal Holes: 25 Apr 22

Solar wind flowing from the indicated coronal hole should reach Earth on April 29-30. Credit: SDO/AIA

DOUBLE SOLAR FLARE: Sunspot AR2993 erupted twice in quick succession on April 25th, producing an overlapping pair of M1-class solar flares: movie.

The double-blast caused a minor albeit long-lasting radio blackout over southeast Asia and Australia, affecting frequencies below 20 MHz. Stay tuned for updates about a possible CME.

Solar wind
speed: 374.7 km/sec
density: 1.05 protons/cm3
Updated: Today at 0547 UT

X-ray Solar Flares
6-hr max: C1 2350 UT Apr25
24-hr: C6 1735 UT Apr25
Updated: Today at: 0550 UT

Daily Sun: 26 Apr 22

A new and potentially active sunspot is emerging at the circled location. Credit: SDO/HMI

Current Auroral Oval:

Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 2 quiet

Interplanetary Mag. Field
Btotal: 4.30 nT
Bz: 0.07 nT north
Updated: Today at 0546 UT

Coronal Holes: 26 Apr 22

Solar wind flowing from the indicated coronal hole should reach Earth on April 30th. Credit: SDO/AIA

CHANCE OF FLARES TODAY: The sun has quieted following some minor decay in sunspot complex AR2993-94. Nevertheless, there is still a chance of flares: a 40% chance of M-flares and a 10% chance of X-flares on April 26th, according to NOAA.

Solar wind
speed: 402.4 km/sec
density: 2.88 protons/cm3
Updated: Today at 0611 UT

X-ray Solar Flares
6-hr max: C3 1624 UT Apr26
24-hr: C4 2111 UT Apr25
Updated: Today at: 1815 UT

Solar wind
speed: 434.6 km/sec
density: 6.45 protons/cm3
Updated: Today at 0810 UT

more data: ACE, DSCOVR
6-hr max: C1 0807 UT Apr27
24-hr: C3 1624 UT Apr26
Updated: Today at: 0815 UT

Daily Sun: 27 Apr 22

Departing sunspot AR2994 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= 2 quiet
24-hr max: Kp= 2 quiet

Interplanetary Mag. Field
Btotal: 8.23 nT
Bz: 6.50 nT north
Updated: Today at 0811 UT

Coronal Holes: 27 Apr 22

Solar wind flowing from the indicated coronal hole should reach Earth on April 30. Credit: SDO/AIA

GEOMAGNETIC STORM WATCH (G1-CLASS): There is a chance of minor G1-class geomagnetic storms on April 29th when a co-rotating interaction region (CIR) is expected to hit Earth's magnetic field. CIRs are transition zones between between fast- and slow-moving solar wind streams. They contain shock waves and intense magnetic fields that can do a good job sparking auroras.

ISS transit

Taken by Maximilian Teodorescu on April 27, 2022 @ Giurgiu, Romania