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Solar wind
speed: 426.3 km/sec
density: 4.1 protons/cm3
explanation | more data
Updated: Today at 0110 UT
X-ray Solar Flares
6-hr max: C5
2359 UT Jan27
24-hr: C5
2359 UT Jan27
explanation | more data
Updated: Today at: 2359 UT
Daily Sun: 27 Jan 15
Sunspot AR2268 poses a growing threat for M-class solar flares. Credit: SDO/HMI

Sunspot number: 110
What is the sunspot number?
Updated 27 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 27 Jan 2015


The Radio Sun
10.7 cm flux: 147 sfu
explanation | more data
Updated 27 Jan 2015

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 6.9 nT
Bz: 1.9 nT north
explanation | more data
Updated: Today at 0110 UT
Coronal Holes: 26 Jan 15
A There are no large equatorial 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: 01-27-2015 18:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2015 Jan 27 2201 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
40 %
40 %
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: 2015 Jan 27 2201 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
30 %
MINOR
05 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
30 %
30 %
SEVERE
30 %
40 %
 
Wednesday, Jan. 28, 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.

 
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CLOSE APPROACHING ASTEROID HAS A MOON: Scientists working with NASA's 70-meter Deep Space Network antenna at Goldstone, California, have released the first radar images of asteroid 2004 BL86, which flew past Earth on Jan. 26th. The mountain-sized space has its own small moon: Must-see video from JPL.

SOMETHING FLARE-Y THIS WAY COMES: Solar activity is low, but this could change with the arrival of an active sunspot currently located just behind the sun's eastern limb. Note the circled "hot spot" in this extreme ultraviolet image from NASA's Solar Dynamics Observatory:

Plumes of hot plasma trapped in the sunspot's magnetic canopy, false-colored pink in the image above, herald the arrival of the underlying sunspot. It should emerge into view in a day or so.

Meanwhile, several sunspots on the Earthside of the sun are growing and beginning to crackle with flares. Of particular interest are AR2268 and AR2271, which have increasingly unstable 'beta-gamma' magnetic fields. NOAA forecasters estimate a 30% chance of M-flares in the next 24 hours. Solar flare alerts: text, voice

Realtime Space Weather Photo Gallery

AURORA SURPRISE PROMPTS ROCKET LAUNCH: A geomagnetic storm erupted during the early hours of Jan. 26th, sparking a surprise display of bright auroras around the Arctic Circle. Scientists took the opportunity to launch four sounding rockets from Alaska's Poker Flat Research Range to study the effect of solar storms on the upper atmosphere. Photographer Jamie Adkins created this composite shot of the rocket salvo:

Richard Collins, a principal investigator from the Geophysical Institute at the University of Alaska, Fairbanks, explains the purpose of the launches: "Recent solar storms have resulted in major changes to the composition of the upper atmosphere above 49 miles (80 kilometers), where enhancements in nitrogen compounds have been found.  These compounds can be transported into the middle atmosphere where they can contribute to ozone destruction."

But do these ozone-destroying compounds actually make it down to the ozone layer? "Meteorological conditions do not always allow such transport to occur," he says. Instruments on the rockets were designed to investigate those conditions--specifically, how turbulence and diffusion might cause compounds to mix downward in the atmosphere.

Two of the rockets released trails of trimethyl aluminum (TMA) vapor, creating whitish clouds that were photographed from several ground stations. Miguel Larsen, a principal investigator from Clemson University in South Carolina says "this will help us trace turbulence in the atmosphere/space transition region, and thus, the way atmospheric properties are mixed vertically."

Browse Spaceweather.com's photo gallery for more pictures of the colorful experiment. Aurora alerts: text, voice

Realtime Aurora Photo Gallery

SKI HALOES: For people in the northern hemisphere, now is the time to go skiing. Little known fact: Ski lifts are great places to see ice halos. Olivier Staiger photographed this specimen on Jan. 23rd while he was riding in a cable car in the Les Violettes ski region of Switzerland:

"All morning the area was blanketed in stratus clouds and fog," says Staiger. "Shortly before arriving at Les Violettes, the cable-car emerged from the fog and I saw this very nice display of ice halos, sundogs and more."

Snow-making machines at the ski resort played a key role in creating this display. Atmospheric optics expert Les Cowley explains: "Diamond dust ice crystals growing slowly downwind of ski-slope snow blowers filled the air. Sunlight shining through the crystals produced the display. These man-made crystals tend to be more optically perfect than the ones in clouds and so we get bright, sharp and often very rare halos. Outstanding in this display is a lower tangent arc shining just below the horizon. More halos are labeled here."

Going skiing? Be alert for halos. More examples may be found in the realtime photo gallery.


Realtime Comet 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. 27, 2015, the network reported 15 fireballs.
(15 sporadics)

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 28, 2015 there were 1541 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2015 BK4
Jan 25
5.3 LD
45 m
2015 BF
Jan 25
9.3 LD
22 m
2004 BL86
Jan 26
3.1 LD
680 m
2015 AK45
Jan 26
4.7 LD
23 m
2015 BE92
Jan 29
3.2 LD
10 m
2008 CQ
Jan 31
4.8 LD
36 m
2015 BF92
Feb 7
8.5 LD
65 m
2015 AZ43
Feb 15
7.7 LD
87 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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