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Solar wind
speed: 418.7 km/sec
density: 3.6 protons/cm3
explanation | more data
Updated: Today at 0007 UT
X-ray Solar Flares
6-hr max: C1
1830 UT Oct31
24-hr: C8
0101 UT Oct31
explanation | more data
Updated: Today at: 2359 UT
Daily Sun: 31 Oct 14
Solar activity is returning to low levels. None of the small spots on the sun today pose a threat for strong flares. Credit: SDO/HMI
Sunspot number: 121
What is the sunspot number?
Updated 31 Oct 2014

Spotless Days
Current Stretch: 0 days
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%)

Update 31 Oct
2014

The Radio Sun
10.7 cm flux: 140 sfu
explanation | more data
Updated 31 Oct 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 9.4 nT
Bz: 0.9 nT north
explanation | more data
Updated: Today at 0007 UT
Coronal Holes: 31 Oct 14
Solar wind flowing from the indicated coronal hole should reach Earth on Nov. 3-4. Credit: SDO/AIA.

Spaceweather.com posts daily satellite images of noctilucent clouds (NLCs), which hover over Earth's poles at the edge of space. The data come from NASA's AIM spacecraft. The north polar "daisy" pictured below is a composite of near-realtime images from AIM assembled by researchers at the University of Colorado's Laboratory for Atmospheric and Space Physics (LASP).
Noctilucent Clouds
Switch view: Europe, USA, Asia, Polar
Updated at: 09-02-2014 12:55:12
SPACE WEATHER
NOAA Forecasts
Updated at: 2014 Oct 31 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
10 %
05 %
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: 2014 Oct 31 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
25 %
MINOR
10 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
25 %
25 %
SEVERE
35 %
35 %
 
Saturday, Nov. 1, 2014
What's up in space
 

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A SCARY STORM MISSES EARTH: In July 2012, Earth had a close call with a solar superstorm, the kind of space weather event that could cause significant damage to our technological infrastructure. Fortunately, it missed. In a newly-released interview, NASA heliophysicist Lika Guhathakurta discusses what might have happened if the storm had enveloped our planet. Play it!

SMALL SUNSPOTS DON'T ADD UP: Today, the sun is peppered with spots, more than half a dozen. The visible ones are circled below in an Oct. 31st image from NASA's Solar Dynamics Observatory. If you add these sunspots all together, their combined areas amount to less than 10% of AR2192, the single monster sunspot that just rotated over the sun's western limb. (continued below)

So, while the sunspot count remains high, the sunspot area is low, and the chance of flares has dropped accordingly. NOAA forecasters estimate a scant 5% chance of X-flares this weekend, down from 55% just a few days ago when AR2192 dominated the solar disk. Stay tuned for quiet. Solar flare alerts: text, voice

Realtime Space Weather Photo Gallery

EDGE OF SPACE SOLAR ECLIPSE: There are many beautiful pictures of last Thursday's solar eclipse in the realtime photo gallery. Only these, however, were taken from the stratosphere:

On Oct. 23rd, just as the New Moon was about to pass in front of the sun, the students of Earth to Sky Calculus launched a helium balloon carrying a Nikon D7000 camera. Their goal: to set the record for high-altitude photography of an eclipse. During a two-hour flight to the edge of space, the camera captured 11 images of the crescent sun. The final picture, taken just a split second before the balloon exploded, was GPS-tagged with an altitude of 108,900 feet.

To put this achievement into context, consider the following: Most people who photographed the eclipse carefully mounted their cameras on a rock-solid tripod, or used the precision clock-drive of a telescope to track the sun. The students, however, managed the same trick from an un-stabilized platform, spinning, buffeted by wind, and racing upward to the heavens at 15 mph. Their photos show that DLSR astrophotography from an suborbital helium balloon is possible, and they will surely refine their techniques for even better photos in the future.

Hey thanks! The students wish to thank AutomationDirect.com for sponsoring this flight. Their $500 contribution paid for the helium and other supplies necessary to get the balloon off the ground. Note the Automation Direct logo in this picture of the payload ascending over the Sierra Nevada mountains of central California:

Another notable picture shows the payload ascending over clouds, which blocked the eclipse at ground level but did not prevent photography from the balloon.

Readers, would you like to sponsor a student research flight and have your logo photographed at the edge of space? Contact Dr. Tony Phillips to get involved.

Realtime Eclipse Photo Gallery


Realtime Comet Photo Gallery


  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 Oct. 31, 2014, the network reported 20 fireballs.
(16 sporadics, 2 Northern Taurids, 1 Orionid, 1 Southern Taurid)

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 November 1, 2014 there were 1510 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2014 UF56
Oct 27
0.4 LD
15 m
2014 UU116
Oct 29
6.8 LD
25 m
2014 UL191
Oct 29
5.2 LD
57 m
2003 UC20
Oct 31
52.4 LD
1.0 km
2014 UA176
Nov 6
4.8 LD
19 m
2014 UX57
Nov 6
3.6 LD
23 m
2004 JN13
Nov 18
52.4 LD
4.1 km
1998 SS49
Nov 18
73.9 LD
3.1 km
2005 UH3
Nov 22
44.4 LD
1.3 km
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.
  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
Heliophysics
  the underlying science of space weather
Space Weather Alerts
   
  more links...
 
 
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