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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 373.3 km/sec
density: 0.04 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1146 UT
X-ray Solar Flares
6-hr max: X1
2221 UT Aug05
24-hr: X1
2221 UT Aug05
explanation | more data
Updated: Today at: 2350 UT
Daily Sun: 05 Aug 23
Expand: labels | no labels | Carrington
Earth-facing sunspot AR3392 has a 'beta-gamma' magnetic field that harbors energy for M-class solar flares. Credit: SDO/HMI

Sunspot number: 122
What is the sunspot number?
Updated 05 Aug 2023

Spotless Days
Current Stretch: 0 days
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 05 Aug 2023


Thermosphere Climate Index
today: 20.67x1010 W Warm
Max: 49.4
x1010 W Hot (10/1957)
Min: 2.05
x1010 W Cold (02/2009)
explanation | more data: gfx, txt
Updated 05 Aug 2023

The Radio Sun
10.7 cm flux: 171 sfu
explanation | more data
Updated 05 Aug 2023

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: -6.0% Low
48-hr change: -0.8%
Max: +11.7% Very High
(12/2009)
Min: -32.1% Very Low (06/1991)
explanation | more data
Updated 05 Aug 2023 @ 1700 UT

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 1.67 quiet
24-hr max: Kp= 6.67
storm
explanation | more data
Interplanetary Mag. Field
Btotal: 7.37 nT
Bz: 5.72 nT north
more data: ACE, DSCOVR
Updated: Today at 1146 UT
Coronal Holes: 05 Aug 23

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

Noctilucent Clouds
The northern season for NLCs began on May 26th. The first clouds were detected inside the Arctic Circle by the NOAA 21 satellite. An instrument onboard NOAA 21 (OMPS LP) is able to detect NLCs (also known as "polar mesospheric clouds" or PMCs). For the rest of the season, daily maps from NOAA 21 will be presented here:


Updated: Jul 21, 2023

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.

What happened to NASA's AIM spacecraft, which has been monitoring NLCs since 2007? Earlier this year, the spacecraft's battery failed. As a result AIM is offline, perhaps permanently. There may be some hope of a recovery as AIM's orbit precesses into full sunlight in 2024. Until then, we will maintain AIM's iconic "daily daisy," frozen at Feb. 28, 2023, as a show of thanks for years of service and hope for future daisies:
Switch view:Ross Ice Shelf, Antarctic Peninsula, East Antarctica, Polar
Updated Aug05
SPACE WEATHER
NOAA Forecasts
Updated at: 2023 Aug 05 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
55 %
55 %
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: 2023 Aug 05 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
20 %
MINOR
10 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
15 %
MINOR
20 %
20 %
SEVERE
20 %
20 %
 
Saturday, Aug. 5, 2023
What's up in space
       
 

This is an AI Free Zone! Text created by ChatGPT and other 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.

 

ANOTHER CME IS COMING: A magnetic filament connecting two sunspots erupted this morning, Aug. 5th (~0500 UT), hurling a CME into space. NOAA models predict a glancing blow on Aug. 8th. The impact could spark G1-class geomagnetic storms with a chance of escalating to G2 or G3 because Earth's magnetosphere is already energized by last night's impact. Keep reading. Aurora alerts: SMS Text

X-FLARE! Active sunspot AR3386 erupted again on Aug. 5th (2221 UT), producing a long-duration X1.6-class solar flare. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash:

The flare ionized the top of Earth's atmosphere. This, in turn, caused a shortwave radio blackout over the Pacific Ocean: map. Mariners and ham radio operators may have noticed loss of signal and other propagation effects at frequencies below 30 MHz.

A CME is almost certainly emerging from the blast site. It won't be heading directly for Earth, but its flank might deliver a glancing blow on Aug. 8th or 9th, adding its energy to that of another CME already en route. Stay tuned for an updated forecast after we receive more data from SOHO coronagraphs. Solar flare alerts: SMS Text

Realtime Space Weather Photo Gallery
Free:
Spaceweather.com Newsletter

CME SPARKS STRONG GEOMAGNETIC STORM: As predicted, a CME struck Earth during the early hours of Aug. 5th (0253 UT). Sensors at the Canberra Magnetic Observatory in Australia measured a jolt of 22 nT to our planet's magnetic field. The impact sparked a strong G3-class geomagnetic storm with auroras in the USA as far south as Arizona.

"The aurora was not visible to the unaided eye," says David Blanchard, who took the picture outside Flagstaff, "but my camera picked it up in a 30-sec exposure as a band of pink just above the horizon."

Additional sightings in Missouri, Colorado and the Carolinas confirm that photographic auroras spread to low latitudes. "Photographic auroras" are nearly invisible to the human eye but easy targets for cameras with nighttime exposure settings. This storm also produced bright naked-eye auroras at higher latitudes such as Minnesota, Washington and Michigan.

Did you miss the show? Subscribers to our Space Weather Alert Service received instant text messages when the CME hit and when the geomagnetic storm began. Give it a try.

Realtime Aurora Photo Gallery
Free:
Spaceweather.com Newsletter

LIMITED EDITION ASTRONAUT SNOOPY: Everybody loves Snoopy. For the fan in your life, consider the gift of Astronaut Snoopy. On July 30th, 2023, this limited edition Funko Pop figurine flew to the stratosphere onboard an Earth to Sky Calculus cosmic ray research balloon.


You can have it for $119.95. Snoopy comes with a greeting card showing the space beagle in flight and telling the story of his trip to the stratosphere and back again. All sales support cosmic ray monitoring and hands-on STEM education.

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


Realtime Noctilucent Cloud Photo Gallery
Free:
Spaceweather.com Newsletter


Realtime Aurora 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 Aug 05, 2023, the network reported 24 fireballs.
(10 sporadics, 10 Perseids, 4 southern Delta Aquariids)

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 August 5, 2023 there were 2335 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Velocity (km/s)
Diameter (m)
2016 AW65
2023-Jul-31
16.7 LD
5.7
47
2023 OQ3
2023-Aug-01
3.9 LD
9.8
35
2023 OD5
2023-Aug-01
13.8 LD
18.2
51
2023 OS3
2023-Aug-01
2.5 LD
4.8
10
2023 OF1
2023-Aug-02
17.7 LD
10.7
39
2023 OY4
2023-Aug-02
3.2 LD
17.6
30
2023 OW4
2023-Aug-03
1.5 LD
9.7
10
2020 PN1
2023-Aug-03
10.8 LD
4.8
29
620082
2023-Aug-04
14 LD
20.6
377
2023 OR5
2023-Aug-04
7.4 LD
7.4
32
2023 OQ
2023-Aug-06
9.9 LD
21.3
145
2004 KG1
2023-Aug-06
19.9 LD
9.1
56
2022 BS2
2023-Aug-11
17.3 LD
8.2
30
2023 OE5
2023-Aug-14
4 LD
3.9
18
2022 CP1
2023-Aug-17
13.8 LD
9.8
12
2011 QJ21
2023-Aug-19
13 LD
15.1
45
6037
2023-Aug-23
15.9 LD
14.3
571
2012 PZ17
2023-Aug-30
16.8 LD
3.6
16
2017 BY32
2023-Sep-02
16.4 LD
3.5
19
2021 JA5
2023-Sep-06
13.3 LD
10.9
19
2020 GE
2023-Sep-08
14.9 LD
1.4
8
2020 RT2
2023-Sep-12
11 LD
10
8
2016 LY48
2023-Sep-16
5 LD
10.8
99
2010 TE
2023-Sep-16
6.8 LD
6
22
523598
2023-Sep-20
19.8 LD
25
239
2019 SF6
2023-Sep-26
16.7 LD
8.6
20
2013 TG6
2023-Sep-28
3.6 LD
4.1
17
2009 UG
2023-Sep-30
6.1 LD
9
78
349507
2023-Oct-03
16.5 LD
21
696
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
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

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NASA Near Earth Asteroid Home Page

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