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Solar wind
speed: 317.6 km/sec
density: 3.3 protons/cm3
explanation | more data
Updated: Today at 1317 UT
X-ray Solar Flares
6-hr max: M2
1114 UT Jul31
24-hr: M2
1114 UT Jul31
explanation | more data
Updated: Today at: 1300 UT
Daily Sun: 31 Jul 14
Sunspot AR2130 has a delta-class magnetic field that harbors energy for X-class solar flares. Credit: SDO/HMI
Sunspot number: 145
What is the sunspot number?
Updated 31 Jul 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 Jul 2014

The Radio Sun
10.7 cm flux: 152 sfu
explanation | more data
Updated 30 Jul 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 2.8 nT
Bz: 2.5 nT south
explanation | more data
Updated: Today at 1317 UT
Coronal Holes: 31 Jul 14
There are no large coronal holes on the Earthside of the sun. 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: 07-30-2014 11:55:08
SPACE WEATHER
NOAA Forecasts
Updated at: 2014 Jul 30 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
30 %
30 %
CLASS X
05 %
05 %
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 Jul 30 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
15 %
15 %
SEVERE
15 %
15 %
 
Thursday, Jul. 31, 2014
What's up in space
 

New from Spaceweather.com: Edge of Space Advertising. Send your product or message to the edge of space for a down-to-Earth fee.  Profits support student space weather research. Email Dr. Tony Phillips for more information.

 
Edge of Space Advertising

DUE TODAY: NEW IMAGE OF THE ROSETTA COMET: The European Space Agency's Rosetta spacecraft is now less than 1600 km from Comet 67P/Churyumov-Gerasimenko. In only 6 days, Rosetta will reach the comet's core and go into orbit around it. A new high-resolution image of the comet is due to be released today. Look for it @ESA_Rosetta.

INCOMING STORM CLOUD: Yesterday, July 30th, a dark magnetic filament on the sun erupted and hurled part of itself into space. The Solar and Heliospheric Observatory tracked a bright CME moving away from the blast site at 700 km/s:

Although the CME is not coming straight for Earth, it does have an Earth-directed component. Computer models suggest it will deliver a glancing blow to Earth's magnetic field on August 2nd. NOAA forecasters estimate a 30% chance of polar geomagnetic storms when the storm cloud arrives. Aurora alerts: text, voice

Realtime Space Weather Photo Gallery

THE MARS COMET MEETS FORNAX A: On Oct. 19, 2014, Comet Siding Spring (C/2013 A1) will pass extremely close to Mars. For a while last year researchers thought the comet's core might strike the planet's surface. Now we know that it will be a near miss. Siding Spring will glide by Mars only 132,000 km away--about 1/3rd of the distance between Earth and the Moon. On July 28th, UK astrophotographer Damian Peach photographed the comet en route to Mars passing by the galaxy Fornax A:

"This proved to be a rather fascinating conjunction due to the strange appearance of Fornax A," says Peach. "The various faint shells surrounding it are thought to have been caused by several galactic collisions in the remote past."

Three months from now the comet will reach Mars. Although the comet's nucleus will not strike the planet, gas and dust spewing out of the comet's core will likely interact with the Martian atmosphere. There could be a meteor shower, auroras, and other effects that no one can predict. NASA's fleet of Mars spacecraft and rovers will record whatever happens.

Amateur astronomers can monitor the comet's approach to Mars in the months ahead. Right now, Siding Spring is gliding through the southern constellation Fornax glowing about as brightly as a 12th magntitude star. Mid-sized telescopes such as the Comet Hunter equipped with CCD cameras should have no trouble picking it up. [light curve] [ephemeris] [3D orbit]

Realtime Comet Photo Gallery


Realtime Meteor Photo Gallery


Realtime Aurora Photo Gallery


Realtime NLC 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 Jul. 30, 2014, the network reported 31 fireballs.
(17 sporadics, 7 Perseids, 5 Southern delta Aquariids, 2 alpha Capricornids)

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 July 31, 2014 there were 1496 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2014 OP2
Jul 24
0.5 LD
7 m
2014 OM207
Jul 25
0.7 LD
7 m
2014 OW3
Jul 29
9.6 LD
137 m
2002 JN97
Aug 2
61.4 LD
2.0 km
2001 RZ11
Aug 17
34.2 LD
2.2 km
2013 WT67
Aug 17
16.1 LD
1.1 km
2013 RZ53
Sep 9
1.9 LD
3 m
2002 CE26
Sep 9
47.9 LD
1.8 km
2009 RR
Sep 16
2 LD
34 m
2006 GQ2
Sep 19
65.9 LD
1.1 km
2009 FG19
Sep 26
34.6 LD
1.1 km
2014 NE52
Sep 30
61.2 LD
1.0 km
2001 EA16
Oct 7
35.5 LD
1.9 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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