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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 593.7 km/sec
density: 0.7 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: M3
2007 UT Jul02
24-hr: M5
1052 UT Jul02
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 02 Jul 12
Sunspots 1513 and 1515 have 'beta-gamma' magnetic fields that harbor energy for M-class solar flares. Credit: SDO/HMI
Sunspot number: 137
What is the sunspot number?
Updated 02 Jul 2012

Spotless Days
Current Stretch: 0 days
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

Updated 02 Jul 2012


The Radio Sun
10.7 cm flux: 133 sfu
explanation | more data
Updated 02 Jul 2012

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 4
unsettled
explanation | more data
Interplanetary Mag. Field
Btotal: 3.0 nT
Bz: 0.3 nT north
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 30 Jun 12
Solar wind flowing from this coronal hole should reach Earth on July 2-3. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Jul 02 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
70 %
70 %
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: 2012 Jul 02 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
15 %
MINOR
10 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
30 %
25 %
SEVERE
35 %
25 %
 
Monday, Jul. 2, 2012
What's up in space
 

Hang the Transit of Venus on your wall! Hubble-quality images from NASA's Solar Dynamics Observatory are now available as metallic posters in the Space Weather Store.

 
Venus Transit metal posters

ALMOST X-FLARE: Big sunspot AR1515 erupted on July 2nd at 10:52 UT, producing an M5.6-class solar flare that almost crossed the threshold into X-territory. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash:

A pulse of x-rays and UV radiation from the flare illuminated Earth's upper atmosphere, producing waves of ionization over Europe. Such waves alter the propagation of low-frequency radio transmissions. In Lofoten, Norway, Rob Stammes recorded the ionospheric disturbance using a 60 kHz receiver: data.

The eruption also hurled a CME into space, but not directly toward Earth. The south-traveling cloud could deliver a glancing blow to our planet's magnetosphere on July 4th or 5th. Stay tuned for updates. [SDO movie]

Realtime Space Weather Photo Gallery

POLAR MAGNETIC STORMS: Auroras are dancing around the poles in response to a high-speed solar wind stream buffeting Earth's magnetic field. Stefan Christmann sends this picture from icy Atka Bay in Antarctica:

"On July 1st we enjoyed a beautiful display of aurora australis over the German Antarctic Research Station Neumayer III" says Christmann. "The air temperature was -30°C with 10 knots of wind. Even so, this was one of the most beautiful expierences so far."

NOAA forecasters estimate a 35% chance of continued geomagnetic activity as the solar wind continues to blow. Aurora alerts: text, voice.

Realtime Aurora Photo Gallery

MASSIVE PROMINENCE: Amateur astronomers around the world are monitoring a massive, active prominence dancing along the sun's southeastern limb. Andre van der Hoeven sends this picture from HI-Ambacht, the Netherlands:

Prominences are filaments of magnetism filled with glowing-hot plasma. This beautiful "prom" rises more than 40,000 km above the stellar surface and stretches more than 20 Earth-diameters from end to end. Such structures are naturally unstable, and this one could collapse at any time. Keep and eye on the latest images for developments.


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

  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 July 2, 2012 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2012 MY2
Jun 29
1.3 LD
--
24 m
2003 KU2
Jul 15
40.2 LD
--
1.3 km
2004 EW9
Jul 16
46.8 LD
--
2.1 km
2002 AM31
Jul 22
13.7 LD
--
1.0 km
37655 Illapa
Aug 12
37 LD
--
1.2 km
2000 ET70
Aug 21
58.5 LD
--
1.1 km
1998 TU3
Aug 25
49.2 LD
--
4.9 km
2009 AV
Aug 26
62.8 LD
--
1.1 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
Trade Show Displays
   
  more links...
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