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Daily Sun: 27 May 22


The chance of X-flares is subsiding as big sunspot AR3014 exits the solar disk--from 10% today to only 1% on May 29th. Credit: SDO/HMI
Current Auroral Oval:

Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 2 quiet
explanation | more data

Interplanetary Mag. Field
Btotal: 6.80 nT
Bz: -0.55 nT south
more data: ACE, DSCOVR
Updated: Today at 0746 UT
Coronal Holes: 27 May 22



Solar wind flowing from these coronal holes should reach Earth on May 27-28. Credit: SDO/AIA
GEOMAGNETIC STORM WATCH: Minor G1-class geomagnetic storms are possible on May 28th when a CME is expected to sideswipe Earth's magnetic field. The solar storm cloud was hurled into space by an unstable magnetic filament, which erupted on May 25th. High-latitude auroras are possible this weekend. https://www.spaceweather.com/images2022/25may22/m1_cme.gif
Solar wind
speed: 513.7 km/sec
density: 8.81 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1031 UT

X-ray Solar Flares
6-hr max: C1 0646 UT May28
24-hr: C2 1127 UT May27
explanation | more data
Updated: Today at: 1035 UT
GEOMAGNETIC STORM WATCH: Minor G1-class geomagnetic storms are underway this weekend as Earth moves through a stream of high-speed (> 500 km/s) solar wind. The gaseous material is flowing from a hole in the sun's atmosphere. Storminess could increase later today, May 28th, when a CME is expected to sideswipe Earth's magnetic field.
Coronal Holes: 28 May 22
LUNAR OCCULTATION OF VENUS: For almost 5 hours yesterday, the planet Venus disappeared. It was hiding behind the Moon. Quentin Gineys photographed the lunar occultation from Réunion Island in the Indian Ocean.

"To observe the occultation, I used an 11-inch Celestron telescope," says Gineys. "The phenomenon was very low, only 10 degrees above the horizon. I had to prepare my shooting location well, between roofs, a relay antenna and many palm trees."
Solar wind
speed: 551.3 km/sec
density: 8.55 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0100 UT

X-ray Solar Flares
6-hr max: B3 0942 UT May30
24-hr: C1 0226 UT May30
explanation | more data
Updated: Today at: 1305 UT
Daily Sun: 30 May 22


None of these sunspots pose a threat for strong solar flares. Credit: SDO/HMI
Current Auroral Oval:

Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 3 quiet
explanation | more data

Interplanetary Mag. Field
Btotal: 5.71 nT
Bz: 3.86 nT north
more data: ACE, DSCOVR
Updated: Today at 0100 UT
Coronal Holes: 30 May 22



There are no significant coronal holes on the Earthside of the sun. Credit: SDO/AIA
A METEOR OUTBURST MIGHT HAPPEN TONIGHT: Yes, debris from Comet 73P/Schwassmann-Wachmann 3 might actually be approaching Earth. Last Friday, a camera operated by the Spanish Meteor and Fireball Network caught a piece of the broken comet disintegrating over Europe. The fireball they saw could herald a larger cloud of debris following close behind. If it exists, the approaching cloud could cause a meteor outburst over North America on the night of May 30-31. That's tonight! Probably nothing will happen, but for enthusiasts it's worth a look.

https://twitter.com/i/status/1530619943322017794
Solar wind
speed: 519.4 km/sec
density: 7.58 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0712 UT

X-ray Solar Flares
6-hr max: B2 0146 UT May31
24-hr: B6 1509 UT May30
explanation | more data
Updated: Today at: 0715 UT
Daily Sun: 31 May 22

None of these sunspots pose a threat for strong solar flares. Credit: SDO/HMI
Current Auroral Oval:

Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 3 quiet
explanation | more data

Interplanetary Mag. Field
Btotal: 5.14 nT
Bz: -0.12 nT south
more data: ACE, DSCOVR
Updated: Today at 0712 UT
Coronal Holes: 30 May 22



There are no significant coronal holes on the Earthside of the sun. Credit: SDO/AIA
QUIET WITH A CHANCE OF FLARES: With only three sunspots on the visible disk of the sun, solar activity is low. NOAA forecasters say there is a slight 5% chance of M-class flares today. The most likely source would be slowly-growing sunspot AR3025.
Solar wind
speed: 496.4 km/sec
density: 5.37 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0931 UT

X-ray Solar Flares
6-hr max: B3 0426 UT Jun01
24-hr: B5 1508 UT May31
explanation | more data
Updated: Today at: 0935 UT
Daily Sun: 01 Jun 22


A new sunspot is growing rapidly at the circled location. Credit: SDO/HMI