Solar wind
speed: 338.9 km/sec
density: 1.72 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0237 UT
X-ray Solar Flares
6-hr max: C7
0105 UT Jun24
24-hr: M9
1301 UT Jun23
explanation | more data
Updated: Today at: 0240 UT
Daily Sun: 23 Jun 24
Expand: labels | no labels | Carrington
Sunspot AR3713 has a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. Credit: SDO/HMI

Sunspot number: 139
What is the sunspot number?
Updated 23 Jun 2024

Spotless Days
Current Stretch: 0 days
2024 total: 0 days (0%)
2023 total: 0 days (0%)
2022 total: 1 day (<1%)
2021 total: 64 days (18%)
2020 total: 208 days (57%)
2019 total: 281 days (77%)
2018 total: 221 days (61%)
2017 total: 104 days (28%)
2016 total: 32 days (9%)
2015 total: 0 days (0%)
2014 total: 1 day (<1%)
2013 total: 0 days (0%)
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)
2008 total: 268 days (73%)
2007 total: 152 days (42%)
2006 total: 70 days (19%)

Updated 23 Jun 2024


Thermosphere Climate Index
today: 27.10x1010 W Hot
Max: 49.4
x1010 W Hot (10/1957)
Min: 2.05
x1010 W Cold (02/2009)
explanation | more data: gfx, txt
Updated 22 Jun 2024

The Radio Sun
10.7 cm flux: 196 sfu
explanation | more data
Updated 23 Jun 2024

Cosmic Rays Solar Cycle 25 is intensifying, and this is reflected in the number of cosmic rays entering Earth's atmosphere. Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining--a result of the yin-yang relationship between the solar cycle and cosmic rays.

Oulu Neutron Counts

Percentages of the Space Age average:
today: -2.9% Low
48-hr change: +0.7%
Max: +11.7% Very High
(12/2009)
Min: -32.1% Very Low (06/1991)
explanation | more data
Updated 23 Jun 2024 @ 0700 UT

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 2.00 quiet
24-hr max: Kp= 3.33
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 4.09 nT
Bz: 2.78 nT north
more data: ACE, DSCOVR
Updated: Today at 0237 UT
Coronal Holes: 23 Jun 24

There are no equatorial coronal holes on the Earthside of the sun.
Credit: SDO/AIA

Polar Stratospheric Clouds
Colorful Type II polar stratospheric clouds (PSC) form when the temperature in the stratosphere drops to a staggeringly low -85C. NASA's MERRA-2 climate model predicts when the air up there is cold enough:

On June 23, 2024, the Arctic stratosphere is much too warm for Type II polar stratospheric clouds. | more data.

Noctilucent Clouds
They're back! The northern season for NLCs is underway. The first clouds were detected inside the Arctic Circle on May 25, 2024, by the NOAA 21 satellite. The clouds have since spread, and now observers are seeing from the ground as well:

noctilucent clouds
Updated: June 21, 2024

An instrument onboard NOAA 21 (OMPS LP) is able to detect NLCs (also known as "polar mesospheric clouds" or PMCs). IN the daily map, above, each dot is a detected cloud. As the season progresses, these dots will multiply in number and shift in hue from blue to red as the brightness of the clouds intensifies.

SPACE WEATHER
NOAA Forecasts
Updated at: 2024 Jun 23 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
60 %
60 %
CLASS X
15 %
15 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2024 Jun 23 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
10 %
MINOR
05 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
25 %
20 %
SEVERE
25 %
20 %
 
Monday, Jun. 24, 2024
What's up in space
       
 

This is an AI Free Zone! Text created by Large Language Models is spreading rapidly across the Internet. It's well-written, artificial, frequently inaccurate. If you find a mistake on Spaceweather.com, rest assured it was made by a real human being.

 

MARTIAN AURORA WARNING: A CME is heading for Mars. According to a NASA model, the storm cloud will strike the Red Planet on June 27th. The impact could spark global auroras and erode a small amount of the planet's atmosphere. Aurora alerts: SMS Text

SOMETHING FLARE-Y THIS WAY COMES: Old sunspot AR3664 might not be dead, after all. It's returning today for a rare third trip across the Earthside of the sun. Usually such a superannuated sunspot would be a decaying corpse. Instead, we're getting an explosive active region:


An M9.7-class solar flare on June 23, 2024, with the underlying sunspot inset.

Earlier today, the returning sunspot unleashed an M9.3-class solar flare, only percentage points away from category X. The sunspot itself is only a fraction of its former size, but something about its magnetic underpinnings continues to produce strong flares. Stay tuned for more. Solar flare alerts: SMS Text

Realtime Space Weather Photo Gallery
Free:
Spaceweather.com Newsletter

BUSY INTERSECTION: German astronomer Achim Schaller was watching the sun on June 18, 2024, when several things happened at once. His camera clicked, a plane flew overhead, smearing its contrail across the field of view, and the International Space Station (ISS) split the gap between two giant sunspots. It was one busy intersection:

"Traveling at 17,000 mph, the ISS took less than 2 seconds to cross the solar disk," says Schaller. "In that time I managed to take 17 pictures."

The ISS isn't the only spaceship transiting sunspots. On June 15th, Philip Smith watched an unidentified flying object cross AR3712 over Manorville, NY. "I am not saying this UFO was a flying saucer," says Smith. "It's probably just an Earth-orbiting satellite, but I don't know which one." (Neither do we, but it's a great movie.)

Realtime Space Weather Photo Gallery
Free:
Spaceweather.com Newsletter

COLLECTABLE STAR TREK ORNAMENT: No Trekkie Christmas tree is complete without The Arena Ornament. This rare Hallmark keepsake depicts the reptilian Gorn poised to deliver a death blow to Capt. James T. Kirk on the planet Cestus III. On June 14, 2024, it flew to the edge of space onboard a cosmic ray research balloon:

You can have it for $135.95. The ornament depicts a famous scene from The Original Series episode "Arena" first broadcast on January 19, 1967. Decades later, the Gorn have become main villians on the new Star Trek series Strange New Worlds, which we love!

The ornament comes with a Christmas card showing Kirk and the Gorn in flight, and certifying they have traveled to the edge of space and back again.

Far Out Gifts: Earth to Sky Store
All sales support hands-on STEM education


Realtime Comet Photo Gallery
Free:
Spaceweather.com Newsletter


Realtime Aurora Photo Gallery
Free:
Spaceweather.com Newsletter


Realtime Noctilucent Cloud Photo Gallery
Free:
Spaceweather.com Newsletter

  All Sky Fireball Network
Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA's Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth's atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Jun 22, 2024, the network reported 4 fireballs.
(4 sporadics)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point--Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

  Near Earth Asteroids
Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.
On June 24, 2024 there were 2349 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Velocity (km/s)
Diameter (m)
2024 MA
2024-Jun-18
4.2 LD
11.2
17
2024 KY1
2024-Jun-19
16.1 LD
12.2
36
2024 MC
2024-Jun-19
6.5 LD
14.3
56
2024 LO3
2024-Jun-20
1.9 LD
8
22
2024 LG5
2024-Jun-21
6.1 LD
7.5
17
2024 LO2
2024-Jun-21
14.2 LD
9.1
28
2024 LJ
2024-Jun-22
8.8 LD
18.5
66
2024 KN1
2024-Jun-23
14.7 LD
4.6
28
2024 KJ
2024-Jun-25
13.7 LD
4.5
25
2024 LO5
2024-Jun-25
5.1 LD
7.9
20
2019 NJ
2024-Jun-27
17.2 LD
10.1
66
415029
2024-Jun-27
17.3 LD
25.9
2304
2022 MM1
2024-Jun-28
7.8 LD
10.9
39
2010 XN
2024-Jun-28
14.1 LD
11.3
52
2022 HD1
2024-Jun-29
16.5 LD
7.2
63
2024 MK
2024-Jun-29
0.8 LD
9.4
158
2017 MB3
2024-Jun-30
5 LD
6.5
30
2024 JJ25
2024-Jun-30
10.5 LD
9.4
117
2024 LJ2
2024-Jul-01
19.8 LD
10.4
83
2022 BY39
2024-Jul-02
13.2 LD
3
4
2024 LH
2024-Jul-02
4.4 LD
4.3
32
2024 KQ1
2024-Jul-04
14.9 LD
6.9
57
2022 YS5
2024-Jul-11
11 LD
5.8
38
2024 BY15
2024-Jul-16
16.2 LD
0.7
16
2024 LY2
2024-Jul-23
12 LD
7.8
88
2011 MW1
2024-Jul-25
10.1 LD
8
120
2011 AM24
2024-Jul-26
16.8 LD
6.2
281
523664
2024-Jul-28
14.9 LD
23.7
680
2020 PN1
2024-Aug-02
18 LD
5.5
29
2023 HB7
2024-Aug-05
14.6 LD
6.1
32
2017 TU1
2024-Aug-05
10.1 LD
10.1
22
2024 KH3
2024-Aug-10
14.6 LD
11.4
197
2021 GY1
2024-Aug-16
17.7 LD
6.3
59
2024 JV33
2024-Aug-19
12 LD
11.1
220
2022 BF2
2024-Aug-19
19.7 LD
16.4
91
Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU.
  Cosmic Rays in the Atmosphere

SPACE WEATHER BALLOON DATA: Almost once a week, Spaceweather.com and the students of Earth to Sky Calculus fly space weather balloons to the stratosphere over California. These balloons are equipped with sensors that detect secondary cosmic rays, a form of radiation from space that can penetrate all the way down to Earth's surface. Our monitoring program has been underway without interruption for 7 years, resulting in a unique dataset of in situ atmospheric measurements.

Latest results (July 2022): Atmospheric radiation is decreasing in 2022. Our latest measurements in July 2022 registered a 6-year low:

What's going on? Ironically, the radiation drop is caused by increasing solar activity. Solar Cycle 25 has roared to life faster than forecasters expected. The sun's strengthening and increasingly tangled magnetic field repels cosmic rays from deep space. In addition, solar coronal mass ejections (CMEs) sweep aside cosmic rays, causing sharp reductions called "Forbush Decreases." The two effects blend together to bring daily radiation levels down.

.Who cares? Cosmic rays are a surprisingly "down to Earth" form of space weather. They can alter the chemistry of the atmosphere, trigger lightning, and penetrate commercial airplanes. According to a study from the Harvard T.H. Chan school of public health, crews of aircraft have higher rates of cancer than the general population. The researchers listed cosmic rays, irregular sleep habits, and chemical contaminants as leading risk factors. A number of controversial studies (#1, #2, #3, #4) go even further, linking cosmic rays with cardiac arrhythmias and sudden cardiac death.

Technical notes: The radiation sensors onboard our helium balloons detect X-rays and gamma-rays in the energy range 10 keV to 20 MeV. These energies span the range of medical X-ray machines and airport security scanners.

Data points in the graph labeled "Stratospheric Radiation" correspond to the peak of the Regener-Pfotzer maximum, which lies about 67,000 feet above central California. When cosmic rays crash into Earth's atmosphere, they produce a spray of secondary particles that is most intense at the entrance to the stratosphere. Physicists Eric Regener and Georg Pfotzer discovered the maximum using balloons in the 1930s and it is what we are measuring today.

  Essential web links
NOAA Space Weather Prediction Center
  The official U.S. government space weather bureau
Atmospheric Optics
  The first place to look for information about sundogs, pillars, rainbows and related phenomena.
Solar Dynamics Observatory
  Researchers call it a "Hubble for the sun." SDO is the most advanced solar observatory ever.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Solar and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
SolarMonitor.org
  information about sunspots based on the latest NOAA/USAF Active Region Summary
Starlink Satellite Statistics
  current counts of failed and deployed Starlink satellites from Jonathan's Space Page. See also, all satellite statistics.
The Aerospace Corporation
  Authoritative predictions of space junk and satellite re-entries
Daily Sunspot Summaries
  from the NOAA Space Environment Center
NOAA 27-Day Space Weather Forecasts
  fun to read, but should be taken with a grain of salt! Forecasts looking ahead more than a few days are often wrong.
Aurora 30 min forecast
  from the NOAA Space Environment Center
Live Aurora Webcam
  from Lights over Lapland
Heliophysics
  the underlying science of space weather

Spaceweather.com welcomes these supporters of science communication: RV Sales and Arizona Web Design & SEO and Ketamine Treatment & Therapy and Plan B Facility Services | Pest Control in PhoenixHVAC repair in South Jersey 

To get the best views of the cosmos, check out the Phoenix Window Glass Replacement experts for all your window and glass needs

Got a chipped or cracked windshield that prevents you from seeing space weather events while driving? Get windshield replacement from SR Windows & Glass with free mobile auto glass service anywhere in the Phoenix area.
NASA Near Earth Asteroid Home Page

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