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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
SPACE WEATHER
Current conditions
Solar wind
speed: 460.8 km/sec
density: 1.2 protons/cm3
explanation | more data
Updated: Today at 2245 UT
X-ray Solar Flares
6-hr max: B3
2125 UT Jun04
24-hr: M5
0510 UT Jun04
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 04 June 07
Sunspot 960 has a delta-class magnetic field that harbors energy for X-class solar flares. Credit: SOHO/MDI
Sunspot number: 58
What is the sunspot number?
Updated 03 June 2007
Far side of the Sun:
This holographic image reveals no large spots on the farside of the sun. Image credit: SOHO/MDI
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Updated: 2007 Jun 04 2130 UT
Interplanetary Mag. Field
Btotal: 5.7 nT
Bz: 2.5 nT north
explanation | more data
Updated:Today at 2246 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole should reach Earth on June 3rd or 4th. Credit: SOHO Extreme Ultraviolet Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Jun 04 2203 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
70 %
70 %
CLASS X
20 %
20 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2007 Jun 04 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
15 %
MINOR
10 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
15 %
MINOR
10 %
05 %
SEVERE
05 %
01 %
What's up in Space
June 4, 2007
Would you like to hear about solar flares--while they're flaring? Get instant alerts from SpaceWeather PHONE.

AURORA WATCH: A solar wind stream is buffeting Earth's magnetic field and causing mild geomagnetic storms. High-latitude sky watchers should be alert for auroras.

ACTIVE SUNSPOT: This morning in Slovakia, Kristian Molnar had just attached a digital camera to his Personal Solar Telescope when a ball of light bloomed over sunspot 960:

"I was lucky to be observing the sun at the right moment," says Molnar. "The weather was cloudy, but the activity is still nicely visible."

The eruption he saw was an M9-class solar flare peaking at 0513 UT on June 4th. Even stronger flares are possible from this behemoth sunspot. NOAA forecasters estimate a 20% chance of X-flares during the next 24 hours. Stay tuned!

more images: from Dennis Simmons of Brisbane, Qld, Australia;
from Robert Arnold of Isle of Skye, Scotland; from Pavol Rapavy of Rimavska Sobota,Slovakia; from Pete Lawrence of Selsey, UK; from artist Mark Seibold of Troutdale, Oregon; from Alan Friedman of Buffalo, New York.

HEAVENLY HALO: "It's not just the surface of the sun that's active today," reports Andrew Greenwood of Kerridge, England. The sky around the sun is pretty lively, too:


Photo details: Nikon D50, f22, 200 ISO, 1/1250

"This has to be the most wonderful ice halo display I have ever seen," says Greenwood. "I couldn't stop taking pictures: #1, #2, #3, #4."

Ice halos are rings around the sun caused by ice crystals floating in high clouds. They're visible even on hot days, because clouds 5 to 10 km high, where these halos form, are freezing cold even at the peak of summer. Put your hand in front of the sun and look around, you might catch one!

more images: from Stephane Levesque of Ste Luce, Quebec; from Riccardo Di Nasso of Italy; from Dave Hancox of Dalmellington, Scotland; from Ralph Nevins of Ottawa Ontario; from James Willinghan of Elkridge, Maryland; from Branislav Bezdeda of Nova Dubnica, Slovakia; from Jefferson Teng of Lampung, Indonesia; from Bill Weir of Metchosin (Victoria) British Columbia, Canada; from Mila Zinkova of San Francisco, California.

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 June 4, 2007 there were 864 potentially hazardous asteroids.
June-July 2007 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2005 AD13
June 18
33 LD
16
1.2 km
2007 FV42
July 2
53 LD
15
1.2 km
2007 DT103
July 29
9.3 LD
15
550 m
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 Links
NOAA Space Environment Center
  The official U.S. government bureau for real-time monitoring of solar and geophysical events, research in solar-terrestrial physics, and forecasting solar and geophysical disturbances.
Atmospheric Optics
  The first place to look for information about sundogs, pillars, rainbows and related phenomena.
Solar and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
Daily Sunspot Summaries
  From the NOAA Space Environment Center
Current Solar Images
  from the National Solar Data Analysis Center
  more links...
©2007, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.
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