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49.7°F
Light Air
Updated:
2/5/12 5:38pm
DondelingerPhotography
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| Severe Wx Summary! |
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Space Weather
Solar X-rays: |
Geomagnetic Field:  |
3-day Report of Solar and Geophysical Activity
Issued Feb 05 22:00 UTC
Solar Activity Forecast:
Solar activity is expected to be very low with a chance for C-class activity for the next three days (06 - 08 February).
Geophysical Activity Forecast:
The geomagnetic field is expected to be at mostly quiet levels for the next three days (06 - 08 February).
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HF PropagationFeb 06 0005 UTC
Solar data from WWV. |
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SOHO MDI Sun Spots |
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SOHO EIT 304 |
SOHO EIT 284 |
Mauna Loa Solar Image |
The sun is constantly monitored for sun spots and coronal mass ejections. EIT (Extreme ultraviolet Imaging Telescope) images the solar atmosphere at several wavelengths, and therefore, shows solar material at different temperatures. In the images taken at 304 Angstrom the bright material is at 60,000 to 80,000 degrees Kelvin. In those taken at 171 Angstrom, at 1 million degrees. 195 Angstrom images correspond to about 1.5 million Kelvin, 284 Angstrom to 2 million degrees. The hotter the temperature, the higher you look in the solar atmosphere.
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CURRENT TIME
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Solar Cycle Progression Solar Cycle chart updated using the latest ISES predictions. |
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The Solar Cycle is observed by counting the frequency and placement of sunspots visible on the Sun. Solar minimum occurred in December, 2008. Solar maximum is expected to occur in May, 2013.
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Solar X-ray Flux This plot shows 3-days of 5-minute solar x-ray flux values measured on the SWPC primary and secondary GOES satellites. |
Satellite Environment Plot The Satellite Environment Plot combines satellite and ground-based data to provide an overview of the current geosynchronous satellite environment. |
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Northern Hemi Auroral Map |
Southern Hemi Auroral Map |
Instruments on board the NOAA Polar-orbiting Operational Environmental Satellite (POES) continually monitor the power flux carried by the protons and electrons that produce aurora in the atmosphere. SWPC has developed a technique that uses the power flux observations obtained during a single pass of the satellite over a polar region (which takes about 25 minutes) to estimate the total power deposited in an entire polar region by these auroral particles. The power input estimate is converted to an auroral activity index that ranges from 1 to 10.
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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.
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On
February 6, 2012 there were 1287
potentially hazardous asteroids.
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Recent
& Upcoming Earth-asteroid encounters:
| Asteroid | Date(UT) |
Miss
Distance |
Mag. |
Size |
| 2009 AV | Feb 16 |
44.9 LD |
-- |
1.2 km |
| 2000 ET70 | Feb 19 |
17.7 LD |
-- |
1.0 km |
| 2011 CP4 | Feb 23 |
9.1 LD |
-- |
255 m |
| 2008 EJ85 | Mar 6 |
9.1 LD |
-- |
44 m |
| 1999 RD32 | Mar 14 |
57.9 LD |
-- |
2.4 km |
| 2011 YU62 | Mar 16 |
73.3 LD |
-- |
1.4 km |
| 1996 SK | Apr 18 |
67.2 LD |
-- |
1.6 km |
| 2007 HV4 | Apr 19 |
4.8 LD |
-- |
8 m |
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| 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. |
| Source: Space Weather.com |
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Goddard Spaceflight Center News and Features
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