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Solar wind
speed: 366.3 km/sec
density: 5.9 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: M1
1701 UT May13
24-hr: X2
1605 UT May13
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 13 May 13
Sunspots AR1745 and AR1746 have 'beta-gamma' magnetic fields that harbor energy for M-class solar flares. Credit: SDO/HMI
Sunspot number: 173
What is the sunspot number?
Updated 13 May 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

Update
13 May 2013

The Radio Sun
10.7 cm flux: 147 sfu
explanation | more data
Updated 13 May 2013

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 4.1 nT
Bz: 0.2 nT south
explanation | more data
Updated: Today at 2346 UT
Coronal Holes: 13 May 13
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2013 May 13 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
80 %
80 %
CLASS X
40 %
40 %
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 May 13 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
25 %
MINOR
01 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
15 %
30 %
SEVERE
10 %
30 %
 
Monday, May. 13, 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

SOLAR ACTIVITY SURGES: A sunspot on the sun's eastern limb is crackling with powerful X-class solar flares. It announced itself with an X1.7-class eruption on May 13th at 0217 UT, quickly followed by an X2.8-class flare at 1609 UT. These are the strongest flares of 2013, and they signal a significant uptick in solar activity. More eruptions are in the offing. Solar flare alerts: text, voice.

Both of today's flares have produced strong flashes of extreme ultraviolet radiation. Here is the view of the X1.7-flare from NASA's Solar Dynamics Observatory:

The explosions also hurled coronal mass ejections (CMEs) into space. Coronagraphs onboard the Solar and Heliospheric Observatory are tracking the clouds: movie. The planet in the CME movie is Mercury. Although the CMEs appear to hit Mercury, they do not. In fact, no planets were in the line of fire. However, the CMEs appear to be on course to hit NASA's Epoxi and Spitzer spacecraft on May 15-16.

When the flaring began, the sunspot was hidden behind the sun's eastern limb, but now solar rotation is bringing the active region into view. The Solar and Heliospheric Observatory captured this first look during the waning hours of May 13th:

The next 24 to 48 hours should reveal much about the sunspot, including its size, magnetic complexity, and potential for future flares. For the moment, there is no reason to expect the explosions to stop. Stay tuned for updates. Solar flare alerts: text, voice.

Realtime Space Weather Photo Gallery

FANTASTIC SUNRISE: The sunrise over Australia on Friday, May 10th, was a little ... unusual. Tony O'Brien photographed what happened from a spot south of the town of Newman:

It was an annular solar eclipse. At the moment of O'Brien's snapshot, more than 95% of the sun's diameter was covered by the Moon.

"I traveled a full day to see the eclipse, and it was worth the trip," he says. "What a fantastic event!"

In an annular eclipse the Moon is not quite big enough to cover the entire solar disk. A blinding ring of solar fire juts out around the Moon, overwhelming the sun's delicate corona. It may not be the same as totality, but annularity has a charm and beauty all its own. Browse the gallery for more images from the eclipse zone.

Realtime Solar Eclipse Photo Gallery


Realtime Aurora Photo Gallery


Realtime Comet Photo Gallery


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 May 13, 2013 there were 1397 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2013 JV17
May 6
4.1 LD
12 m
2013 JR7
May 10
9.1 LD
18 m
2004 BV102
May 25
69.9 LD
1.4 km
1998 QE2
May 31
15.2 LD
2.1 km
2009 FE
Jun 4
9.6 LD
230 m
2000 FM10
Jun 5
50.3 LD
1.3 km
2002 KL3
Jun 6
66.4 LD
1.1 km
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
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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