You are viewing the page for Sep. 29, 2017
  Select another date:
<<back forward>>
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 548.1 km/sec
density: 5.2 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: B1
2121 UT Sep29
24-hr: B2
1432 UT Sep29
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 29 Sep 17
None of these sunspots poses a threat for strong solar flares. They all have stable magnetic fields not inclined to explode. Credit: SDO/HMI

Sunspot number: 40
What is the sunspot number?
Updated 29 Sep 2017

Spotless Days
Current Stretch: 0 days
2017 total: 56 days (20%)
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%)

Updated 29 Sep 2017


The Radio Sun
10.7 cm flux: 91 sfu
explanation | more data
Updated 29 Sep 2017

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 2.8 nT
Bz: 0.5 nT north
more data: ACE, DSCOVR
Updated: Today at 2347 UT
Coronal Holes: 29 Sep 17

Earth is inside a stream of high-speed solar wind flowing from the indicated coronal hole. Credit: NASA/SDO.
Noctilucent Clouds Latest images from NASA's AIM spacecraft show that the 2017 northern summer season for noctilucent clouds has finished.
Switch view: Europe, USA, Asia, Polar
Updated at: 09-03-2017 01:55:03
SPACE WEATHER
NOAA Forecasts
Updated at: 2017 Sep 29 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
01 %
01 %
CLASS X
01 %
01 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2017 Sep 29 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
30 %
30 %
MINOR
15 %
15 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
15 %
MINOR
30 %
25 %
SEVERE
50 %
50 %
 
Friday, Sep. 29, 2017
What's up in space
       
 

Lights Over Lapland is excited to announce that our Customizable Aurora Adventures are available for immediate booking! Reserve your adventure of a lifetime in Abisko National Park, Sweden today!

 

THE SOLAR WIND CONTINUES TO BLOW: Yesterday's strong geomagnetic storm is over, and Earth's magnetic field is quieting. However, the solar wind is still blowing around our planet faster than 550 km/s. This could stir up more geomagnetic activity on Sept. 29th. NOAA forecasters say there is a 60% chance of G1-class storms during the next 24 hours. Polar sky watchers should remain alert for auroras. Free: Aurora Alerts

NORTHERN LIGHTS IN THE USA: On Sept. 27th, a solar wind stream hit Earth's magnetic field. Flowing from a large hole in the sun's atmosphere, the stream was fast and potent; by the early hours of Sept. 28th a strong G3-class geomagnetic storm was underway. Northern Lights spilled across the Canadian border into nearly a dozen US states, including Washington:

Lenny Angello took this picture from Sudden Valley, WA. "Spaceweather.com was reporting a G3 storm so I set up for aurora photography," he says. "Visually, the display was mostly faint. This brief intense outburst with movement and structure took place shortly before local midnight."

Elsewhere in the USA, Northern Lights were sighted in Wyoming, Michigan, Montana, Iowa, Idaho, Wisconsin, Illinois, Minnesota, the Dakotas and, of course, Alaska. To see more auroras in unexpected places, browse the realtime photo gallery.

Realtime Aurora Photo Gallery

THE NIGHT NORWAY TURNED GREEN: You know a strong geomagnetic storm is underway when everything turns green--not only the sky, but also the landscape. Thilo Bubek of Tromsø, Norway, saw it happen on Sept. 27th:

"The green light from auroras overhead was reflected from the mountains and water," he says. "I photographed these extreme auroras using my Nikon D850."

More green reflections are possible tonight. NOAA forecasters say there is a 60% chance of polar geomagnetic storms on Sept. 29th as the solar wind continues to blow faster than 600 km/s. Free: Aurora Alerts

Realtime Space Weather Photo Gallery

ROSE QUARTZ CRYSTAL ECLIPSE PENDANTS: On Aug. 21st during the Great American Solar Eclipse, the students of Earth to Sky Calculus launched 11 space weather balloons from the path of totality. They aimed to photograph the Moon's shadow from the stratosphere--and they succeeded. As a fundraiser, some of the balloons carried jewelry, such as this rose quartz crystal pendant floating inside the Moon's shadow more than 90,000 feet above Oregon's Malheur National Forest:

During the 2.5 hour flight, the pendants were wrapped in the Moon's shadow for more than two minutes, experiencing a spooky darkness colder than -50 C.

You can have one for $149.95. Each crystal pendant comes with a unique gift card showing the jewelry passing through the Moon's shadow and floating at the top of Earth's atmosphere. The interior of the card tells the story of the flight and confirms that this gift has been to the edge of space and back again.

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


  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 Sep. 29, 2017, the network reported 14 fireballs.
(14 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 September 29, 2017 there were 1803 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Velocity (km/s)
Diameter (m)
2017 ST10
2017-Sep-24
2.8 LD
9.7
7
2017 SU17
2017-Sep-24
0.7 LD
8.4
9
2017 SS12
2017-Sep-24
0.7 LD
10.3
14
2017 SR16
2017-Sep-25
9.7 LD
18.5
49
2017 RW2
2017-Sep-25
15.1 LD
12.9
28
2017 SP10
2017-Sep-25
12.2 LD
9.3
20
2017 RW1
2017-Sep-25
11 LD
12.7
65
2017 RO16
2017-Sep-25
5 LD
8.2
11
2017 SU16
2017-Sep-26
4.8 LD
10.7
18
2017 RB16
2017-Sep-26
4.8 LD
9.5
26
2004 SS
2017-Sep-26
15.8 LD
7.9
141
2017 SS10
2017-Sep-27
10 LD
11.7
33
2017 SQ10
2017-Sep-27
16.2 LD
7.4
18
2017 RY17
2017-Sep-27
16.6 LD
5
14
2017 SQ14
2017-Sep-28
13.9 LD
7.5
16
2017 SQ12
2017-Sep-29
17.2 LD
7
28
1989 VB
2017-Sep-29
7.9 LD
6.3
408
2017 RP15
2017-Sep-30
14.8 LD
5.6
18
2017 SH16
2017-Sep-30
9.2 LD
13.7
32
2017 SK14
2017-Oct-01
19.1 LD
8.3
23
2017 OD69
2017-Oct-01
13.2 LD
7.6
213
2017 SX17
2017-Oct-02
0.2 LD
7.3
9
2017 SS16
2017-Oct-03
5.4 LD
16.2
17
2017 SO10
2017-Oct-04
16.7 LD
8.4
39
2004 RE84
2017-Oct-04
15.3 LD
16.1
129
2017 ST14
2017-Oct-04
16 LD
17.3
71
2017 RV1
2017-Oct-12
17.8 LD
10.9
347
2012 TC4
2017-Oct-12
0.1 LD
7.6
16
2005 TE49
2017-Oct-13
8.5 LD
11.2
16
2013 UM9
2017-Oct-15
17 LD
7.8
39
2006 TU7
2017-Oct-18
18.7 LD
13.3
148
2017 SH14
2017-Oct-20
15.3 LD
6.9
42
171576
2017-Oct-22
5.8 LD
21.2
677
2003 UV11
2017-Oct-31
15 LD
24.5
447
444584
2017-Nov-17
8.7 LD
14.8
324
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

Readers, thank you for your patience while we continue to develop this new section of Spaceweather.com. We've been working to streamline our data reduction, allowing us to post results from balloon flights much more rapidly, and we have developed a new data product, shown here:

This plot displays radiation measurements not only in the stratosphere, but also at aviation altitudes. Dose rates are expessed as multiples of sea level. For instance, we see that boarding a plane that flies at 25,000 feet exposes passengers to dose rates ~10x higher than sea level. At 40,000 feet, the multiplier is closer to 50x. These measurements are made by our usual cosmic ray payload as it passes through aviation altitudes en route to the stratosphere over California.

What is this all about? Approximately 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 radiation sensors that detect cosmic rays, a surprisingly "down to Earth" form of space weather. Cosmic rays can seed clouds, trigger lightning, and penetrate commercial airplanes. Furthermore, there are studies ( #1, #2, #3, #4) linking cosmic rays with cardiac arrhythmias and sudden cardiac death in the general population. Our latest measurements show that cosmic rays are intensifying, with an increase of more than 13% since 2015:


Why are cosmic rays intensifying? The main reason is the sun. Solar storm clouds such as coronal mass ejections (CMEs) sweep aside cosmic rays when they pass by Earth. During Solar Maximum, CMEs are abundant and cosmic rays are held at bay. Now, however, the solar cycle is swinging toward Solar Minimum, allowing cosmic rays to return. Another reason could be the weakening of Earth's magnetic field, which helps protect us from deep-space radiation.

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.

The data points in the graph above correspond to the peak of the Reneger-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 Reneger 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.
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
Heliophysics
  the underlying science of space weather
Spaceweather.com welcomes two supporters of science communication: SEO Phoenix AZ and CRAS, the Conservatory of Recording Arts and Sciences. Only the best social media jobs in the United States
   
Travel Visa Pro
   
Buy real active Instagram followers
Need a break from space weather? Relax with the best gaming headset
Houston SEO Expert
Guide for best car parts at prettymotors.com
   
Chicago SEO Expert
   
Search Kelowna Real Estate Listings & Homes for Sale easily.
Find help on all Calgary Homes For Sale and Real Estate Listings. Great source for Edmonton Real Estate Listings & Homes For Sale
  sponsored link
Wordpress Hosting and SEO Hero!
   
Get a discount when buying products online from awesomecoupons.org
   
Need protection from UV radiation? Check out roofing In Grand Rapids MI
   
Reviews here can help you to pick up best memory foam mattresses.
  These links help Spaceweather.com stay online. Thank you to our supporters!
  more links...
       
©2017 Spaceweather.com. All rights reserved. This site is penned daily by Dr. Tony Phillips.
©2013 Spaceweather.com. All rights reserved.