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Solar wind
speed: 497.5 km/sec
density: 2.4 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: C2
1701 UT Mar25
24-hr: C8
0446 UT Mar25
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 25 Mar 15
Sunspot AR2305 has a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. Credit: SDO/HMI

Sunspot number: 127
What is the sunspot number?
Updated 25 Mar 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%)

Updated 254 Mar 2015


The Radio Sun
10.7 cm flux: 133 sfu
explanation | more data
Updated 25 Mar 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= 4
unsettled
explanation | more data
Interplanetary Mag. Field
Btotal: 5.6 nT
Bz: 0.8 nT north
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 25 Mar 15

There are no large equatorial coronal holes on the Earthside of the sun. Credit: SDO/AIA.
Noctilucent Clouds The southern season for NLCs has come to an end. The last clouds were observed by NASA's AIM spacecraft on Feb. 20, 2015. Now attention shifts to the northern hemisphere, where the first clouds of 2015 should appear in mid-May.
Switch view: Ross Ice Shelf, Antarctic Penninsula, East Antarctica, Polar
Updated at: 02-28-2015 02:55:03
SPACE WEATHER
NOAA Forecasts
Updated at: 2015 Mar 25 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 Mar 25 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
30 %
MINOR
01 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
25 %
30 %
SEVERE
20 %
35 %
 
Wednesday, Mar. 25, 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

ASTEROID OVER-HYPE: The internet is abuzz with discussion about asteroid 2014 YB35. Some media outlets are reporting that this kilometer-class space rock will "skim past Earth" for a "terrifying" close encounter on Friday, March 27th. That is a gross exaggeration. At closest approach, 2014 YB35 will be 4.5 million kilometers away, almost a dozen times farther from Earth than the Moon. There is absolutely no danger of a collision, and it's not even close. [3D orbit]

CHASING MOON SHADOWS: Total eclipses of the sun are achingly brief. The Moon's shadow races across the landscape at thousands of kilometers per hour, enveloping sky watchers for a matter of minutes at most. On March 20th, when the Moon passed in front of the sun over the Arctic Ocean, a few observers extended the experience--in an airplane. "Flying at 14,000 m was an incredible way to watch the eclipse," reports Sylvain Chapeland. "Our velocity of 950 km/h allowed an extra minute of totality." She recorded this must-see video over a stretch of ocean between Iceland and the Faroe Islands:

"I have never seen anything like the shadow of the Moon rushing upon us during totality, overtaking us and continuing its path at 3000 km/h," says Chapeland. "This was a dramatic perspective. Our view of the sun's corona with Venus shining on the east side were incredible."

Want to spend even more time in the shadow of the Moon? Take your time browsing Spaceweather.com's solar eclipse photo gallery:

Realtime Eclipse Photo Gallery

SUNSPOT TURNS TOWARD EARTH: Solar activity is low, but sunspot AR2305 is poised to break the quiet. The growing active region has developed a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. And, as shown in this movie from NASA's Solar Dynamics Observatory, the sunspot is turning toward Earth:

Because solar activity is so low, NOAA forecasteres are estimating a scant 1% chance of X-flares on March 25th. However, if AR2305 taps into its potential and produces such an eruption, it will surely be Earth-directed. Stay tuned. Solar flare alerts: text, voice

Realtime Space Weather 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 Mar. 25, 2015, the network reported 16 fireballs.
(16 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 March 25, 2015 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2015 FM
Mar 23
6.1 LD
26 m
2015 FW33
Mar 23
9.6 LD
29 m
2015 FO34
Mar 23
6.4 LD
13 m
2015 FN34
Mar 25
8 LD
20 m
2015 FC
Mar 26
2.9 LD
20 m
2015 FH37
Mar 27
8.9 LD
46 m
2015 FP
Mar 28
9.6 LD
40 m
2015 FF36
Mar 28
3.5 LD
23 m
2015 FN33
Apr 6
9.8 LD
25 m
2063 Bacchus
Apr 7
76 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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