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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 432.4 km/sec
density: 3.6 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: B2
1701 UT Nov17
24-hr: B7
0438 UT Nov17
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 17 Nov 10
All of the spots on the Earth-facing side of the sun are quiet. They are not producing strong flares. Credit: SDO/HMI. 2-day movie: 9 MB mpg
Sunspot number: 55
What is the sunspot number?
Updated 16 Nov 2010

Spotless Days
Current Stretch: 0 days
2010 total: 45 days (14%)
2009 total: 260 days (71%)
Since 2004: 813 days
Typical Solar Min: 486 days

Updated 16 Nov 2010


The Radio Sun
10.7 cm flux: 92 sfu
explanation | more data
Updated 16 Nov 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 4.8 nT
Bz: 1.6 nT south
explanation | more data
Updated: Today at 2345 UT
Coronal Holes: 17 Nov 10
Earth is inside a solar wind stream flowing from the indicated coronal hole. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2010 Nov 17 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
01 %
01 %
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: 2010 Nov 17 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
 
Wednesday, Nov. 17, 2010
What's up in space
 

AURORA ALERTS: Did you miss the Northern Lights? Next time get a wake-up call from Space Weather PHONE

 

METEOR ACTIVITY UPDATE: The annual Leonid meteor shower is peaking today, Nov. 17th, as Earth passes through a thicket of debris from Comet Tempel-Tuttle. So far the shower has been a modest one, with fewer than ~25 meteors per hour according to international counts. The reason: Earth is missing the densest swarms of comet dust. A better shower is coming. The Geminids of mid-December are expected to exceed today's Leonids four- or five-fold. Stay tuned for that!

images: from James Beauchamp of Oklahoma City, OK; from Martin Popek of Nýdek, Czech republic; from Ugur Ikizler of Mudanya - Bursa / Turkey

AURORA WATCH: A solar wind stream is buffeting Earth's magnetic field, sparking geomagnetic activity around the Arctic Circle. "I was driving through the countryside near Tromsø, Norway, on Nov. 14th when bright auroras burst through the clouds," reports Ole Christian Salomonsen. He quickly pulled over to take this picture:

"The lights were amazing--green, white, purple, moving fast and strong," says Salomonsen. "I call the shot 'Colorful Clouds.'"

NOAA forecasters estimate a 40% chance of geomagnetic activity during the next 24 hours. High latitude sky watchers should remain alert for auroras.

NEW: November 2010 Aurora Gallery
[previous Novembers: 2009, 2008, 2007, 2006, 2004, 2003, 2002, 2001, 2000]

ACTIVE FILAMENT: A dark filament of magnetism is snaking around the sun's southwestern horizon, and it could be poised to erupt. The 600,000 km-long structure has shown considerable instability since it began lifting up from the stellar surface yesterday: SDO movie. (continued below)

What happens next? The filament has several options: relaxing gently back into the sun, snapping explosively, or crashing down upon the stellar surface. Although an eruption from the area would likely not be Earth-directed, it could be very photogenic as tendrils of hot plasma fly into the black space above the edge of the sun. Readers with solar telescopes are encouraged to monitor the region for developments.

  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 November 17, 2010 there were 1164 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2010 TQ19
Oct 8
9.6 LD
18
37 m
2010 TS19
Oct 10
3.7 LD
18
31 m
2010 TD54
Oct 12
0.1 LD
14
7 m
2010 TB54
Oct 13
6.1 LD
20
19 m
1999 VO6
Oct 14
34.3 LD
16
1.8 km
2010 TK
Oct 16
4.5 LD
18
37 m
1998 TU3
Oct 17
69.1 LD
13
5.2 km
2010 TG19
Oct 22
1.1 LD
15
70 m
1998 MQ
Oct 23
77.7 LD
15
1.9 km
2007 RU17
Oct 29
39.2 LD
15
1.1 km
2003 UV11
Oct 30
5 LD
12
595 m
3838 Epona
Nov 7
76.8 LD
14
3.4 km
2005 QY151
Nov 16
77.7 LD
17
1.3 km
2008 KT
Nov 23
5.6 LD
21
10 m
2002 EZ16
Nov 30
73.9 LD
16
1.0 km
2000 JH5
Dec 7
47 LD
-
1.5 km
2010 JL33
Dec 9
16.6 LD
13
1.3 km
2008 EA32
Jan 7
76.5 LD
-
2.1 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
Science Central
   
  more links...
 
 
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