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Solar wind
speed: 636.8 km/sec
density: 4.2 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: B4
1715 UT Jun01
24-hr: B6
1346 UT Jun01
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 01 Jun 13
None of these magnetically-simple sunspots poses a threat for strong solar flares. Credit: SDO/HMI
Sunspot number: 58
What is the sunspot number?
Updated 01 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

Update
01 Jun 2013

The Radio Sun
10.7 cm flux: 104 sfu
explanation | more data
Updated 31 May 2013

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 4 unsettled
24-hr max: Kp= 6
storm
explanation | more data
Interplanetary Mag. Field
Btotal: 13.2 nT
Bz: 1.8 nT north
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 01 Jun 13
Solar wind flowing from this coronal hole should hit Earth's magnetic field on June 3-4. Credit: SDO/AIA.

NEW: Spaceweather.com 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: 06-01-2013 10:55:03
SPACE WEATHER
NOAA Forecasts
Updated at: 2013 Jun 01 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
20 %
20 %
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: 2013 Jun 01 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
35 %
20 %
MINOR
15 %
05 %
SEVERE
05 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
15 %
MINOR
30 %
25 %
SEVERE
50 %
30 %
 
Saturday, Jun. 1, 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

GEOMAGNETIC STORM, SUBSIDING: Earth's magnetic field is calming down on June 1st following nearly 15 hours of non-stop geomagnetic storming. The storminess was caused by the arrival of an interplanetary shock wave on May 31st (1618 UT). The source of the shock is unknown. Current speculation focuses on a corotating interaction region (CIR)--that is, a shock-like transition zone between high- and low-speed solar wind streams. Whatever it was, the impact ignited some beautiful auroras. More storms could be in the offing tonight as the solar wind continues to blow faster than 600 km/s. Aurora alerts: text, voice.

AURORAS IN THE USA: Last night, Northern Lights spilled across the Canadian border into more than a dozen US states, turning the sky purple and green as far south as Colorado and Nebraska. Subscribers to the Space Weather Alert System (text, voice) knew the storm was coming, but others were surprised:

"Last night, I drove to Crater Lake National Park to photograph the Milky Way rising above the rim," reports Oregon photographer Brad Goldpaint. "I was staring upward towards a clear night sky when suddenly, without much warning, the aurora borealis began erupting in front of me." (continued below)

"With adrenaline pumping, I raced to the edge of the caldera, set up a time-lapse sequence, and watched northern lights dance until sunrise," he continues. "The moon rose around 2am and blanketed the surrounding landscape with a faint glow, adding depth and texture to the shot."

High-latitude sky watchers should remain alert for auroras tonight as Earth's magnetic field continues to reverberate from the impact. NOAA forecasters estimate a 40% chance of polar geomagnetic storms on June 1st. Aurora alerts: text, voice.

Realtime Aurora Photo Gallery

BINARY ASTEROID FLYBY: Massive asteroid 1998 QE2 and its moon flew past Earth on May 31st only 5.8 million kilometers away. Using a remotely controlled 10-inch telescope in New Mexico, Ernesto Guido & Nick Howes photographed the binary space rockaround the time of closest approach:

The 2.7-km-wide asteroid is receding from Earth now. Ironically, it will become easier to see in the nights ahead. 1998 QE2 is turning its sunlit side toward Earth, so it is growing brighter as it recedes. At maximum brightness on June 3rd and 4th, it will shine as brightly as a 10th or 11th magnitude star, an easy target for mid-sized backyard telescopes.

While amateur astronomers watch 1998 QE2 glide through the constellations Libra and Ophiuchus, NASA radars will be pinging the space rock with powerful bursts of radio energy, obtaining images so crisp they will rival those of previous asteroid-spacecraft flybys. In this case, Earth is the spaceship! Stay tuned for updates.

Realtime Space Weather Photo Gallery

NOCTILUCENT CLOUDS: On May 30-31, sky watchers across northern Europe witnessed a vivid display of noctilucent ("night-shining") clouds. M. J. S. Ferrier photographed the electric-blue ripples from Barassie Beach in Troon, Scotland:

Noctilucent clouds (NLCs) form near the top of Earth's polar atmosphere when water vapor from the planet below mixes with meteor debris from space. They appear during summer because that is when the mesosphere is coldest and most humid. This year, NLCs appeared early, more than a full month before the solstice, setting the stage for an unusually good NLC-watching season.

High latitude sky watchers should be alert for NLCs in the evenings ahead. In recent years they have been sighted as far south as Utah, Colorado, and Nebraska. Observing tips: Look west 30 to 60 minutes after sunset when the sun has dipped 6o to 16o below the horizon. If you see luminous blue-white tendrils spreading across the sky, you've probably spotted a noctilucent cloud.

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


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 1, 2013 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2004 BV102
May 25
69.9 LD
1.4 km
1998 QE2
May 31
15.2 LD
1.6 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
1999 CF9
Aug 23
24.7 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
Space Weather Alerts
   
  more links...
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