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SPACE WEATHER
NOAA Forecasts |
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Updated at: 2026 Jun 02 2200 UTC
FLARE |
0-24
hr |
24-48
hr |
CLASS M |
50
% |
50
% |
CLASS X |
10
% |
10
% |
Geomagnetic Storms:
Probabilities for significant
disturbances in Earth's magnetic field are given for three activity levels: active, minor
storm, severe
storm
Updated at: 2026 Jun 02 2200 UTC
Mid-latitudes
|
0-24
hr |
24-48
hr |
ACTIVE |
30
% |
35
% |
MINOR |
10
% |
15
% |
SEVERE |
01
% |
01
% |
High latitudes
|
0-24
hr |
24-48
hr |
ACTIVE |
15
% |
10
% |
MINOR |
30
% |
30
% |
SEVERE |
30
% |
50
% |
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This is an AI Free Zone: AI is everywhere -- except here. Spaceweather.com is written by Dr. Tony Phillips, a carbon-based lifeform with 30 yrs of forecasting experience. If you find a mistake, rest assured it was made by a real human being.
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ANTI-HALE SUNSPOT TARGETS EARTH: Solar activity is intensifying today following a strong M9-class solar flare from anti-Hale sunspot 4455. "Anti-Hale" means the sunspot has a reversed-polarity magnetic field, which makes it unstable and explosive. The CME produced by today's explosion is expected to reach Earth on June 5th, according to a NASA model. Stay tuned for updates! CME Impact Alerts: SMS Text
Above: Today's M9-class solar flare recorded by NASA's Solar Dynamics Observatory.
THE GREAT SUNSET SKY SHOW OF JUNE 2026: It's happening now. The two brightest planets in the Solar System are converging for one of the best sunset conjunctions in years. In less than a week (June 8-9), Jupiter and Venus will be only 1.6 degrees apart -- rivaling the Great Conjunction of 2002. Denis Joye of Paris, France, took this picture 24 years ago, previewing the evenings ahead:
"This is the church of St-Cloud with Venus and Jupiter shining on either side of the spire," he say. "It was a beautiful sight."
The 2026 version will be even better. Later this week, Mercury will leap up from the horizon to join Venus and Jupiter in the constellation Gemini. Next week, the crescent Moon will follow Mercury to Venus and Jupiter, forming a bright quartet in the twilight sky.
Every evening for the next two weeks will be gorgeous. Step outside at sunset, look west, and enjoy the show. Sky maps: June 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17.
Realtime Space Weather Photo Gallery
Free: Space Weather Newsletter
BEST DAD IN THE GALAXY TUMBLER: Are you looking for a far-out Father's Day gift? Consider the Best Dad in the Galaxy Tumbler. The students of Earth to Sky Calculus launched this 20 oz. stainless steel tumbler to the stratosphere onboard a cosmic ray research balloon:
You can have it for $99.95. This Star Wars-themed cup keeps beverages cold for 12 hours or hot for 6 hours. It's safe, too, because the transparent lid seals tightly to prevent spills and is completely BPA-free. The Force is with it.
With your purchase, you will also receive a greeting card showing the tumbler in flight and telling the story of its trip to the stratosphere.
Far Out Gifts: Earth to Sky Store
All sales support hands-on STEM education
Realtime Aurora Photo Gallery
Free: Spaceweather.com Newsletter
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 01, 2026, the network reported 1 fireball.
(1 sporadic)
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]
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 3, 2026 there were 2349 potentially hazardous asteroids.
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Recent
& Upcoming Earth-asteroid encounters:
| Asteroid |
Date(UT) |
Miss Distance |
Velocity (km/s) |
Diameter (m) |
| 2026 KX1 |
2026-May-28 |
4.1 LD |
9.4 |
22 |
| 2026 KD1 |
2026-May-28 |
11 LD |
5.1 |
15 |
| 2026 KT2 |
2026-May-28 |
2 LD |
11.5 |
64 |
| 2026 HW2 |
2026-May-29 |
17.7 LD |
12.5 |
119 |
| 2023 BM4 |
2026-May-30 |
12.2 LD |
5.7 |
64 |
| 2026 KJ2 |
2026-May-31 |
17.5 LD |
7.2 |
24 |
| 2026 KA3 |
2026-May-31 |
9.7 LD |
9.3 |
26 |
| 2026 KV |
2026-Jun-01 |
10.1 LD |
10.9 |
27 |
| 2026 JN |
2026-Jun-01 |
16 LD |
7.8 |
49 |
| 2026 KO3 |
2026-Jun-01 |
17.3 LD |
12.9 |
45 |
| 2026 KB1 |
2026-Jun-01 |
10.3 LD |
13.5 |
130 |
| 2021 KN2 |
2026-Jun-03 |
8.9 LD |
8.9 |
7 |
| 2018 GE |
2026-Jun-07 |
16.4 LD |
3.1 |
11 |
| 2026 KM3 |
2026-Jun-09 |
6.1 LD |
8.7 |
34 |
| 2016 VS |
2026-Jun-12 |
20 LD |
11.1 |
12 |
| 2026 LA |
2026-Jun-12 |
19.8 LD |
9.9 |
38 |
| 530520 |
2026-Jun-12 |
16.1 LD |
14.6 |
152 |
| 2003 LN6 |
2026-Jun-18 |
3.7 LD |
3.9 |
41 |
| 2025 WC4 |
2026-Jun-21 |
10.2 LD |
19.2 |
304 |
| 2015 LM24 |
2026-Jun-22 |
18.2 LD |
13.8 |
71 |
| 152637 |
2026-Jun-27 |
6.7 LD |
8.9 |
947 |
| 523808 |
2026-Jul-04 |
9.1 LD |
16.8 |
479 |
| 2023 YO1 |
2026-Jul-05 |
6.5 LD |
2.7 |
23 |
| 2007 AA2 |
2026-Jul-11 |
17.8 LD |
7.2 |
43 |
| 2025 PN7 |
2026-Jul-17 |
11.6 LD |
2.6 |
19 |
| 2025 MB90 |
2026-Jul-19 |
5.1 LD |
9.6 |
54 |
| 2020 OM |
2026-Jul-21 |
9.1 LD |
9.5 |
15 |
| 2026 KU3 |
2026-Jul-24 |
7.7 LD |
8.6 |
79 |
| 2020 UR1 |
2026-Jul-25 |
18.8 LD |
7.6 |
28 |
| 2015 BF |
2026-Jul-26 |
17.3 LD |
12.5 |
17 |
| 2025 OW |
2026-Jul-30 |
16.1 LD |
20.1 |
70 |
Notes: LD means
"Lunar Distance." 1 LD = 384,401 km, the distance
between Earth and the Moon. 1 LD also equals 0.00256
AU.
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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 10 years, resulting in a unique dataset of in situ atmospheric measurements.
Latest results (Nov. 2024): Atmospheric radiation is sharply decreasing in 2024. Our latest measurements in November registered a 10-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.
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The
official U.S. government space weather bureau |
| |
The
first place to look for information about sundogs,
pillars, rainbows and related phenomena. |
| |
Researchers
call it a "Hubble for the sun." SDO
is the most advanced solar observatory ever. |
| |
3D
views of the sun from NASA's Solar and Terrestrial
Relations Observatory |
| |
Realtime
and archival images of the Sun from SOHO. |
| |
information about sunspots based on the latest NOAA/USAF Active Region Summary |
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current counts of failed and deployed Starlink satellites from Jonathan's Space Page. See also, all satellite statistics. |
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Authoritative predictions of space junk and satellite re-entries |
| |
from
the NOAA Space Environment Center |
| |
fun to read, but should be taken with a grain of salt! Forecasts looking ahead more than a few days are often wrong. |
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from the NOAA Space Environment Center |
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the
underlying science of space weather |
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