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Solar wind
speed: 400.9 km/sec
density: 1.7 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: B4
1945 UT Jun12
24-hr: B4
1945 UT Jun12
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 12 Jun 13
Sunspot AR1765 has a simple magnetic field that poses no threat for strong solar flares. Credit: SDO/HMI
Sunspot number: 14
What is the sunspot number?
Updated 12 Jun 2013

Spotless Days
Current Stretch: 0 days
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%)
Since 2004: 821 days
Typical Solar Min: 486 days

12 Jun 2013

The Radio Sun
10.7 cm flux: 90 sfu
explanation | more data
Updated 12 Jun 2013

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 1
explanation | more data
Interplanetary Mag. Field
Btotal: 4.1 nT
Bz: 1.5 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 12 Jun 13
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.

NEW: is now posting 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: 06-12-2013 11:55:04
NOAA Forecasts
Updated at: 2013 Jun 12 2200 UTC
0-24 hr
24-48 hr
05 %
05 %
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: 2013 Jun 12 2200 UTC
0-24 hr
24-48 hr
10 %
10 %
01 %
01 %
01 %
01 %
High latitudes
0-24 hr
24-48 hr
15 %
15 %
20 %
20 %
15 %
15 %
Wednesday, Jun. 12, 2013
What's up in space

They came from outer space--and you can have one! Genuine meteorites are now on sale in the Space Weather Store.

Own your own meteorite

QUIET SUN: With the sunspot number dropping to almost zero, solar activity is very low. No strong flares are expected today. NOAA: 1% chance of X-flares. SWx alerts: text, voice.

JUST ONE FIREBALL: An outburst of gamma Delphinid meteors expected by some forecasters on June 11th failed to materialize. If anything, the meteor rate was slightly lower than normal as Earth passed through a region of space where the cometary debris stream was supposed to be. No outburst, however, doesn't mean no meteors. Thomas Ashcraft recorded a gamma Delphinid fireball streaking over his private observatory in rural New Mexico:

"This fireball appeared ten minutes from the predicted outburst peak time," says Ashcraft. "One fireball does not prove an outburst but this meteor may be significant in any case."

Turn the volume up and play the movie again. The sounds you hear are distant radio transmitters reflecting from the fireball's ion trail. Ashcraft operates a 61 MHz forward-scatter meteor radar, which detects such reflections. "There is a faint scatter reflection at the terminal burst moment, but the full radio reflection was delayed in this case and lasted over a minute," he says.

Realtime Space Weather Photo Gallery

AURORAS + NOCTILUCENT CLOUDS: On Sunday, June 9th, Alan Dyer of Gleichen, Alberta, Canada, went outside to see the colors of the sunset. He got more than he bargained for. Stacked atop the rosy glow of twilight were dual bands of electric-blue noctilucent clouds and green auroras:

"At times the auroral curtains appeared superimposed on the noctilucent clouds," says Dyer. "It isn't often we see the two phenomena together."

That's because they are completely unrelated. Auroras are caused by energetic particles from the sun raining down on Earth's upper atmosphere, causing the air to glow like the picture tube of a color TV. Noctilucent clouds are made of tiny ice crystals wrapped around bits of meteor smoke. Their electric-blue color comes from the scattering of high altitude sunlight. On June 9th the two phenomena overlapped for a rare display.

"Adding to the colours was the deep orange of perpetual twilight rimming the northern horizon," continues Dyer. "It was a beautiful pre-solstice night."

More aurora-noctilucent overlaps might be in the offing. NLC experts say noctilucent clouds have appeared bright and early this year, while 2013 might bring the late surge of a double-peaked Solar Max. High-latitude sky watchers should keep an eye on the sunset. Aurora alerts: text, voice.

Realtime Noctilucent Cloud Photo Gallery
[previous years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011]

Realtime Aurora Photo Gallery

Realtime Comet Photo Gallery

  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 June 12, 2013 there were 1397 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Miss Distance
2002 KL3
Jun 6
66.4 LD
1.1 km
2013 LR6
Jun 8
0.3 LD
12 m
2013 LD2
Jun 10
6 LD
49 m
1999 WC2
Jun 12
39.2 LD
1.9 km
2006 RO36
Jun 18
70.9 LD
1.2 km
2001 PJ9
Jul 17
29.2 LD
1.1 km
2006 BL8
Jul 26
9.3 LD
48 m
2003 DZ15
Jul 29
7.6 LD
153 m
2005 WK4
Aug 9
8.1 LD
420 m
1999 CF9
Aug 23
24.7 LD
1.1 km
2002 JR9
Aug 31
63.5 LD
1.4 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.
  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
  the underlying science of space weather
Space Weather Alerts
  more links...
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