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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 484.0 km/sec
density: 5.50 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1146 UT
X-ray Solar Flares
6-hr max: C1
2154 UT Aug14
24-hr: C5
1400 UT Aug14
explanation | more data
Updated: Today at: 2350 UT
Daily Sun: 14 Aug 22
Expand: labels | no labels
Sunspots AR3076, 78, 79 and 81 are all crackling with C-class solar flares. Credit: SDO/HMI

Sunspot number: 116
What is the sunspot number?
Updated 14 Aug 2022

Spotless Days
Current Stretch: 0 days
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 14 Aug 2022


Thermosphere Climate Index
today: 13.55
x1010 W Neutral
Max: 49.4
x1010 W Hot (10/1957)
Min: 2.05
x1010 W Cold (02/2009)
explanation | more data: gfx, txt
Updated 14 Aug 2022

The Radio Sun
10.7 cm flux: 124 sfu
explanation | more data
Updated 14 Aug 2022

Cosmic Rays Solar Cycle 25 is beginning, 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: +2.0% Elevated
48-hr change: +1.5%
Max: +11.7% Very High
(12/2009)
Min: -32.1% Very Low (06/1991)
explanation | more data
Updated 14 Aug 2022 @ 1700 UT

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 4.96 nT
Bz: 0.31 nT north
more data: ACE, DSCOVR
Updated: Today at 1145 UT
Coronal Holes: 14 Aug 22

Solar wind flowing from this long equatorial coronal hole should reach Earth on August 17-19.
Credit: SDO/AIA

Noctilucent Clouds
Noctilucent cloud season is underway. The clouds are currently spreading as far south as +45N (Oregon).
Switch view: Europe, USA, Asia, Polar
Updated Aug14
SPACE WEATHER
NOAA Forecasts
Updated at: 2022 Aug 14 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
25 %
25 %
CLASS X
05 %
05 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2022 Aug 14 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
15 %
15 %
SEVERE
05 %
05 %
 
Sunday, Aug. 14, 2022
What's up in space
       
 

Never miss another geomagnetic storm. Sign up for Space Weather Alerts and you'll receive a text message when magnetic storms erupt. Aurora your guides and professional astronomers use this service. You can, too!

 

GEOMAGNETIC STORM WATCH: Minor to moderate geomagnetic storms are possible on Aug. 17-18 when a CME is expected to sideswipe Earth's magnetic field. The storm cloud was launched earlier today by an explosion around sunspot AR3076, described below. NOAA analysts are modeling the CME for a more precise estimate of impacts and arrival time. Stay tuned. Solar flare alerts: SMS Text

DRAMATIC EXPLOSION ON THE SUN: The sun just hurled a plume of dark plasma into space following a dramatic explosion around sunspot AR3076. NASA's Solar Dynamics Observatory recorded the blast, which began on Aug. 14th around 1130 UT:

Traveling faster than 600 km/s (1.3 million mph), the plume tore through the sun's outer atmosphere, creating a coronal mass ejection (CME). Newly arriving images from the Solar and Heliospheric Observatory (SOHO) confirm that the CME has an Earth-directed component. It could sideswipe Earth's magnetic field on Aug. 17th, producing minor to moderate geomagnetic storms. Aurora alerts: SMS Text

Realtime Space Weather Photo Gallery
Free:
Spaceweather.com Newsletter

PERSEID RADAR ECHOES: The Perseid meteor shower peaked on Aug. 13th. Full moonlight muted the show for most observers, but it was no problem for the GRAVES space surveillance radar. "Last night was very active with strong signals and lots of Perseids," reports Heiko Ulbricht, who recorded these echoes from his listening station in Freital, Germany:

Located in France, GRAVES scans the skies for satellites, meteors and other space debris passing over Europe. The radar sends a series of 143 MHz pulses straight up, and anything it "pings" is reflected far and wide. Ulbricht listens to the echoes from Germany using a Yagi antenna and receiver tuned to the GRAVES frequency.

"In the screenshot, above, there are two rapidfire Perseids sandwiched between echoes from the full Moon," says Ulbricht. "Listening to GRAVES last night was really fun."

Bonus: Ulbricht also recorded an audio file. Turn up the volume and listen. The two Perseid echoes sound like high-pitched "tweets" doppler-shifted by the meteors' rapid motion through Earth's atmosphere.

Realtime Perseid Photo Gallery
Free:
Spaceweather.com Newsletter

SOLAR SYSTEM CRYSTAL BALL: Are you looking for a far-out gift? Consider the Solar System Crystal Ball. Watch the video as the orb travels to the stratosphere onboard an Earth to Sky Calculus cosmic ray balloon, stretching and inverting the incredible landscape of the Sierra Nevada mountains behind it:

You can have it for $229.95. The students are selling these crystal balls to pay for their cosmic ray ballooning program. The 800 gram sphere contains a model of the Solar System, including the sun, eight planets and their moons. It makes an incredible gift for anyone interested in space.

Each one comes with a unique gift card showing the item at the edge of space and telling the story of its flight. All proceeds support Earth to Sky Calculus and hands-on STEM research.

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

BREAKING WAVE: Yesterday in the core of sunspot AR3078, an S-shaped strand of magnetism erupted. What happened next was a little unusual. A blast wave shot out sideways and broke against the wall of a nearby coronal hole:

Coronal holes are voids in the sun's atmosphere where magnetic fields open up, allowing solar wind to escape. The hole's nearly vertical magnetic walls and outflowing stream of solar wind stopped this blast in its tracks.

The S-shaped filament, called a "sigmoid," re-formed after the explosion. Sigmoids are notoriously unstable, so more eruptions may be in the offing. Stay tuned. Solar flare alerts: SMS Text

Realtime Space Weather Photo Gallery
Free:
Spaceweather.com Newsletter


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 14, 2022, the network reported 47 fireballs.
(31 Perseids, 16 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 August 14, 2022 there were 2290 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Velocity (km/s)
Diameter (m)
2022 OC4
2022-Aug-09
4 LD
7.5
12
2022 PF
2022-Aug-09
4.5 LD
9.6
15
2022 PA1
2022-Aug-10
2.7 LD
16.3
18
2022 PK1
2022-Aug-11
13.6 LD
10.2
33
2015 FF
2022-Aug-12
11.2 LD
9.2
17
2022 PX1
2022-Aug-12
2.8 LD
35.1
125
2022 OT1
2022-Aug-13
12.4 LD
5.8
36
2022 OA4
2022-Aug-14
18.2 LD
7.9
23
2022 PJ1
2022-Aug-16
11 LD
5.9
19
2022 PW
2022-Aug-16
1.4 LD
7.5
30
2022 PC
2022-Aug-18
16.5 LD
4.1
62
2019 AV13
2022-Aug-20
13.8 LD
9.2
135
2020 QW3
2022-Aug-22
14.1 LD
18.1
30
2015 QH3
2022-Aug-22
5.6 LD
7
14
2017 BU
2022-Aug-29
15.8 LD
7
32
2021 CQ5
2022-Sep-01
8.7 LD
13.5
7
2008 RW
2022-Sep-12
17.5 LD
10.2
98
2020 PT4
2022-Sep-15
19.7 LD
10.8
39
2016 HF2
2022-Sep-29
19.2 LD
5.6
21
2018 ER1
2022-Oct-02
14.7 LD
4
27
2018 VG
2022-Oct-05
18.5 LD
6.7
12
2021 TJ10
2022-Oct-06
19.6 LD
8.1
6
2006 SG7
2022-Oct-07
16.7 LD
18.4
93
2013 TJ6
2022-Oct-07
11.7 LD
14.4
32
Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.
  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
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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