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Solar wind
speed: 365.3 km/sec
density: 10.7 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: X1
1832 UT Jan07
24-hr: X1
1832 UT Jan07
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 07 Jan 14
Giant sunspot AR1944 has a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. Credit: SDO/HMI
Sunspot number: 245
What is the sunspot number?
Updated 07 Jan 2014

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
07 Jan 2014

The Radio Sun
10.7 cm flux: 204 sfu
explanation | more data
Updated 07 Jan 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 6.7 nT
Bz: 6.2 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 07 Jan 14
Solar wind flowing from this emerging coronal hole should reach Earth on Jan. 12-13. 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: 01-07-2014 12:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2014 Jan 07 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
80 %
80 %
CLASS X
50 %
50 %
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 Jan 07 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
45 %
15 %
MINOR
15 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
20 %
MINOR
30 %
30 %
SEVERE
60 %
25 %
 
Tuesday, Jan. 7, 2014
What's up in space
 

When is the best time to see auroras? Where is the best place to go? And how do you photograph them? These questions and more are answered in a new book, Northern Lights - a Guide, by Pal Brekke & Fredrik Broms.

 
Northern Lights - a Guide

X-FLARE: Giant sunspot AR1944 erupted on Jan 7th at approximately 1832 UT, producing a powerful X1-class solar flare. First-look coronagraph images from the STEREO-Ahead spacecraft appear to show a coronal mass ejection (CME) emerging from the blast site. If so, the CME is almost certainly heading for Earth. Stay tuned for updates as more data arrive from the NASA-ESA Heliophysics Fleet. Solar flare alerts: text, voice.

HUGE SUNSPOT TARGETS EARTH: One of the biggest sunspots in years is crossing the center of the solar disk, putting Earth in the way of potential eruptions. Rocky Raybell photographed the active region named "AR1944" yesterday from his backyard in Keller, Washington:

The sprawling sunspot contains dozens of dark cores, the largest big enough to swallow Earth three times over. This makes it an easy target for amateur solar telescopes -- or even regular cameras. Raybell used an SX40 digital camera on a tripod whole holding a Baader solar filer over the lens to capture his image. Photo details may be found here.

Although AR1944 has been mostly quiet for days, flares are in the offing. The sunspot has an unstable 'beta-gamma-delta' magnetic field that could erupt at any time. NOAA forecasters estimate a 75% chance of M-class flares and a 30% chance of X-flares on Jan. 7th.


Above: A 4-day movie of AR1944 from the Solar Dynamics Observtory

Realtime Space Weather Photo Gallery

CME IMPACT: A coronal mass ejection (CME) hit Earth's magnetic field on Jan. 7th at approximately 1500 UT. The glancing impact did not immediately spark a geomagnetic storm. However, storm conditions could develop as Earth travels through the CME's wake. High latitude sky watchers should remain alert for auroras. Aurora alerts: text, voice.

VENUS, THE CRESCENT PLANET: Venus is turning its night side toward Earth as it approaches inferior solar conjunction on Jan. 11th. Barely 1% of Venus's sunlit hemisphere is now facing us, which means the planet looks like a razor-thin crescent. If you have a GOTO telescope, command it to slew to Venus. It's visible even in broad daylight:

Shahrin Ahmad of Sri Damansara, Malaysia, took the picture on Jan. 6th using a 4.5 inch telescope. "As Venus gets closer to the sun, it gets thinner everyday!" says Ahmad. "So far, this is the thinnest Venus I've managed to photograph--a mere 9.5o from the sun and just 1.3% illuminated!"

Realtime Venus Photo Gallery


Realtime Aurora 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. 7, 2014, the network reported 30 fireballs.
(29 sporadics, 1 Quadrantid)

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]

On Jan. 6, 2014, the network reported 7 fireballs.
(6 sporadics, 1 alpha Hydrid)

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 7, 2014 there were 1449 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2014 AA
Jan 2
0.001 LD
3 m
2013 YL2
Jan 3
3.6 LD
101 m
2014 AF16
Jan 5
6.2 LD
42 m
2013 YM48
Jan 6
8.8 LD
31 m
2013 YV102
Jan 7
6.7 LD
34 m
2014 AD16
Jan 8
1.5 LD
15 m
2007 SJ
Jan 21
18.9 LD
1.9 km
2012 BX34
Jan 28
9.6 LD
13 m
2006 DP14
Feb 10
6.2 LD
730 m
2000 EM26
Feb 18
8.8 LD
195 m
2000 EE14
Mar 6
64.6 LD
1.8 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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