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Solar wind
speed: 298.9 km/sec
density: 3.4 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: B4
2159 UT Aug16
24-hr: C2
0929 UT Aug16
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 16 Aug 14
Sunspots AR2139 and AR2144 have 'beta-gamma' magnetic fields that harbor energy for M-class solar flares. Credit: SDO/HMI
Sunspot number: 119
What is the sunspot number?
Updated 16 Aug 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
16 Aug 2014

The Radio Sun
10.7 cm flux: 113 sfu
explanation | more data
Updated 16 Aug 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 1
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 5.3 nT
Bz: 2.3 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 16 Aug 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: 08-16-2014 10:55:07
SPACE WEATHER
NOAA Forecasts
Updated at: 2014 Aug 16 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
20 %
20 %
CLASS X
01 %
01 %
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 Aug 16 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
01 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
10 %
10 %
SEVERE
05 %
05 %
 
Saturday, Aug. 16, 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

MORNING PLANETS: Set your alarm for dawn! Venus and Jupiter are converging for a spectacular conjunction in the early morning sky. Closest approach: August 18th. A video from NASA previews the encounter. [photo gallery]

ERUPTING FILAMENT CREATES 'CANYON OF FIRE', CME: A magnetic filament snaking down the middle of the solar disk erupted during the late hours of Aug. 15th. The eruption split the sun's atmosphere, hurling a CME toward Earth and creating a "canyon of fire," shown here in a movie recorded by the Solar Dynamics Observatory:

The glowing walls of the canyon trace the original channel where the filament was suspended by magnetic forces above the stellar surface. From end to end, the structure stretches more than 250,000 km--a real Grand Canyon.

Of greater interest to us on Earth is the coronal mass ejection (CME) which billowed away from the blast site: movie. Coronagraph images from the Solar and Heliospheric Observatory show that it is a 'halo CME.' In other words, it is heading straight for Earth. Minor geomagnetic storms are possible when the cloud arrives during the late hours of August 18th. High-latitude sky watchers should be alert for auroras. Aurora alerts: text, voice

Realtime Space Weather Photo Gallery

THE LANDSCAPE OF A COMET--NOW IN 3D: For the past few days, we have highlighted a recent image of Comet 67P/Churyumov-Gerasimenko taken by Europe's Rosetta spacecraft. Spaceweather.com reader Hanno Falk of Germany has taken that image to a new level by adding a 3rd dimension. Click on the graphic below, then cross your eyes to merge the two nuclei. Oh, and be careful not to fall over the cliff:

Falk created the cross-eyed view by combining two images taken by Rosetta 17 minutes apart. ESA did the same thing to make a 3D anaglyph. The problem with anaglyphs is that they require 3D glasses. Falk's version requires only two eyes.

The 3D view reveals a deep canyon separating the two lobes of 67P's core. The canyon's smooth floor is peppered with boulders, while the highlands outside the canyon are jagged and dimpled by crater-like depressions.

Now imagine this magnificent landscape ruptured by dozens of geysers spewing dust and gas into space. Future pictures may show exactly that. Rosetta will follow this comet for more than a year as it approaches the sun. In 2015, if not sooner, solar heating will activate the comet's icy core, creating a riot of activity the likes of which no spacecraft has ever seen before. Stay tuned for that.

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 Aug. 16, 2014, the network reported 54 fireballs.
(33 sporadics, 14 Perseids, 4 kappa Cygnids, 2 Northern delta Aquariids, 1 Southern delta Aquariid)

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 August 16, 2014 there were 1494 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
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
1.1 km
2001 EA16
Oct 7
35.5 LD
1.9 km
2011 TB4
Oct 9
5.8 LD
34 m
2003 UC20
Oct 31
52.4 LD
1.0 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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