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Solar wind
speed: 425.7 km/sec
density: 7.3 protons/cm3
explanation | more data
Updated: Today at 2350 UT
X-ray Solar Flares
6-hr max: C2
1652 UT Jan15
24-hr: C2
1649 UT Jan15
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 15 Jan 15
Sunspot AR2259 has a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. Credit: SDO/HMI

Sunspot number: 89
What is the sunspot number?
Updated 15 Jan 2015

Spotless Days
Current Stretch: 0 days
2015 total: 0 days (0%)

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 15 Jan 2015


The Radio Sun
10.7 cm flux: 142 sfu
explanation | more data
Updated 15 Jan 2015

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 9.4 nT
Bz: 0.3 nT north
explanation | more data
Updated: Today at 2350 UT
Coronal Holes: 15 Jan 15
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.
Noctilucent Clouds As of Nov. 22, 2014, the season for southern hemisphere noctilucent clouds is underway. The south polar "daisy" pictured below is a composite of near-realtime images from NASA's AIM spacecraft.
Switch view: Ross Ice Shelf, Antarctic Penninsula, East Antarctica, Polar
Updated at: 01-15-2015 18:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2015 Jan 15 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
25 %
25 %
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: 2015 Jan 15 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
30 %
20 %
MINOR
10 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
25 %
25 %
SEVERE
40 %
30 %
 
Thursday, Jan. 15, 2015
What's up in space
 

Learn to photograph Northern Lights like a pro. Sign up for Peter Rosen's Aurora Photo Courses in Abisko National Park.

 
Lapland tours

CHANCE OF STORMS: NOAA forecasters estimate a 40% chance of polar geomagnetic storms on Jan. 15th when a CME is expected to sideswipe Earth's magnetic field. The storm cloud was propelled in our direction by a solar filament eruption three days ago. Residents of the Arctic, be alert for auroras. Aurora alerts: text, voice

COMET LOVEJOY AT ITS BRIGHTEST: This is a good week to look at Comet Lovejoy, which is reaching maximum brightness as mid-January passes. Experienced observers say the comet is now shining like a star of magnitude +3.8. In other words, it is an easy target for binoculars and visible to the unaided eye from dark-sky sites. On Wednesday night, Ehsan Rostamizadeh of Bidkhoun, Iran, photographed the comet passing by the Pleiades star cluster:

This gives backyard sky watchers a point of comparison: If you can see the Pleiades, you can probably see the comet, too.

A telescope pointed at Comet Lovejoy reveals a fantastic tail more than 10o long. Regular observers report striking dynamics: Earlier this month, a magnetic storm in the comet's tail caused a "disconnection event" and a blob of plasma to propagate down the long gaseous structure. Every time a gust of solar wind or a CME buffets the comet, something interesting happens. To monitor developments, consult the Comet Lovejoy finder charts from Sky & Telescope. Also, the Minor Planet Center has published an ephemeris for accurate pointing of telescopes.

Realtime Comet Photo Gallery

SPACE WEATHER BUOYS INVESTIGATE COSMIC RAYS: Did you know...? The flux of cosmic rays around Earth has been increasing for the past week. To investigate, spaceweather.com and the students of Earth to Sky Calculus are launching a series of Space Weather Buoys to the stratosphere. Carred aloft by helium balloons, each Buoy carrries a pair of radiation sensors, a GPS altimeter, and multiple cameras to record the flight. Here is the view from 111,100 feet captured by a Buoy launched on Jan. 10th:

In the lower right of this picture, visible through a wide gap in the clouds, is Bishop, CA, the small mountain town where most of the student researchers live. Spaceweather.com HQ is located in the Sierras overlooking Bishop, underneath a bank of white, fluffy clouds.

Another launch happened yesterday, Jan. 14th. By the end of the week we hope to share data showing how atmospheric radiation levels are responding to the ongoing uptick in cosmic rays.

Hey thanks! The Jan. 10th flight was made possible by a generous donation of $500 from spaceweather.com reader Jack Jewell. A picture of Jack crossing the finish line of a 50-mile ultramarathon flew to the stratosphere on top of the Bouy. Here it is in flight:

Readers, if you would like to follow in Jack's footsteps to the stratosphere by sponsoring a flight, please contact Dr. Tony Phillips to make arrangements.

Realtime Space Weather Photo Gallery


Realtime Aurora 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 Jan. 15, 2015, the network reported 4 fireballs.
(3 sporadics, 1 xi Coronae Borealid)

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 January 15, 2015 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2007 EJ
Jan 12
68.9 LD
1.0 km
1991 VE
Jan 17
40.6 LD
1.0 km
2015 AK1
Jan 18
5.6 LD
50 m
2004 BL86
Jan 26
3.1 LD
680 m
2008 CQ
Jan 31
4.8 LD
36 m
2000 EE14
Feb 27
72.5 LD
1.6 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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