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Solar wind
speed: 427.9 km/sec
density: 3.7 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: C1
1859 UT Jan09
24-hr: C1
0216 UT Jan09
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 09 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: 178
What is the sunspot number?
Updated 09 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
09 Jan 2014

The Radio Sun
10.7 cm flux: 195 sfu
explanation | more data
Updated 09 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: 12.0 nT
Bz: 2.6 nT north
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 08 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: 01-09-2014 11:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2014 Jan 09 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
75 %
75 %
CLASS X
35 %
35 %
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 09 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
45 %
MINOR
30 %
10 %
SEVERE
50 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
10 %
MINOR
15 %
30 %
SEVERE
85 %
50 %
 
Thursday, Jan. 9, 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

THE CME HAS ARRIVED: As expected, a CME hit Earth's magnetic field on Jan. 9th (around 20:00 UTC or 3 p.m. EST). Although the initial impact was weaker than expected, geomagnetic storms could still develop as Earth passes through the CME's wake. NOAA forecasters are sticking by their prediction of a G3-class event on Jan. 9-10, which means high-latitude sky watchers should remain alert for auroras. Aurora alerts: text, voice.

HUGE SUNSPOT, CHANCE OF FLARES: The source of the incoming CME is AR1944, one of the largest sunspots of the current solar cycle. The active region sprawls across more than 200,000 km of solar terrain and contains dozens of dark cores. The largest could swallow Earth three times over. AR1944 is circled in this Jan. 9th snapshot from NASA's Solar Dynamics Observatory:

As the image shows, the sunspot is almost directly facing Earth. This makes it a threat for geoeffective eruptions. NOAA forecasters estimate an 80% chance of M-class flares and a 50% chance of X-flares on Jan. 9th. Solar flare alerts: text, voice.

Realtime Space Weather Photo Gallery

SPACE WEATHER BALLOON LAUNCHED: Energetic protons are swirling around Earth this week. The ongoing radiation storm was triggered by an X-class solar flare on Jan. 7th, and two days later it is still going strong. To study the effects of the S3-category storm on Earth's atmosphere, yesterday the students of Earth to Sky Calculus launched a space weather balloon from the Sierra Nevada mountains of central California:

Lofted by approximately 200 cubic feet of helium, the balloon ascended to an altitude of approximately 110,000 feet. Its payload contained an x-ray/gamma-ray dosimeter, a GPS altimeter, and a cryogenic thermometer. Together these instruments can form a complete thermal and radiation profile of the atmosphere throughout the flight. Of special interest are aviation altitudes--i.e., between 5 km and 15 km--where planes carry human passengers through the storm. The students want to find out how much ordinary air travelers are exposed during an event like this.

The balloon popped as planned on Jan. 8th and the payload parachuted back to Earth, landing in a remote corner of Death Valley National Park. The students will recover the payload and its data on Jan. 9th. Stay tuned for results. Solar flare alerts: text, voice.

Realtime Space Weather Photo Gallery

VENUS, THE CRESCENT PLANET: Venus is turning its night side toward Earth as it approaches inferior solar conjunction on Jan. 11th. Less than 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 these pictures on Jan. 2nd, 6th and 8th using a 4.5 inch telescope. "It us very interesting to see how fast Venus changes in only 6 days! Today the thinning crescent is only 0.7% illuminated at a distance of 7o from the sun."

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. 8, 2014, the network reported 20 fireballs.
(19 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. 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]

  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 9, 2014 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2014 AF16
Jan 5
6.2 LD
41 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
2014 AE29
Jan 9
4.1 LD
16 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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