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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
Current Auroral Oval:


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

Interplanetary Mag. Field
Btotal: 2.40 nT
Bz: -1.44 nT south
more data: ACE, DSCOVR
Updated: Today at 0931 UT
Coronal Holes: 01 Jun 22



There are no significant coronal holes on the Earthside of the sun. Credit: SDO/AIA
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EXPLODING COMET DEBRIS: Have you ever seen a piece of a comet explode? Francis Murphy did on Monday night in Thorndale, Pennsylvania:

https://spaceweathergallery.com/submissions/pics/f/Francis-Murphy-May_31st_2022_Meteor_Chart_1654037263.gif

The tau Herculid meteor shower was underway as debris from Comet 73P/Schwassmann-Wachmann 3 peppered the top of Earth's atmosphere. This piece of the broken comet disintegrated 90 km above above the ground, spreading its remains across the edge of space.

"The meteor's trail twisted and turned in high altitude winds," says Murphy. "It was the brightest of 10 to 15 tau Herculids we saw during a 3-hour observing session."

In Mormon Lake, Arizona, astronomer David Blanchard saw the same thing--twice. This video shows two tau Herculids disintegrating in a star field with satellites and airplanes whizzing by.
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