Space Weather Observations, Alerts, and Forecast
Real Time Images of the Sun
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.
Solar activity was low. A single C1 flare was observed from the southeast limb. Some new spot regions rotated onto the visible disk in the northeast (N11E69, N13E58) and southeast [S11E66) and are being monitored for potential numbering. There are three large filaments on the visible disk that bear watching. A type-II radio sweep (Est. 493 km/s) was reported at 27/1234 UTC, with no associated significant X-ray event. Once SOHO/LASCO coronagraph imagery became available, a CME was observed erupting from the northeast limb at 27/1325 UTC. This event appeared to be correlated with an eruption on SDO/AIA 193 imagery on the northeast limb and is not expected to be geoeffective.
Solar Activity Forecast
Issued: 2015 May 28 0030 UTC
Solar activity is expected to be at very low levels with a growing chance for C-class activity over the next three days (28-30 May). Day three is also forecast to have a slight change for a M-class (R1-minor) solar flare event, as old region 2339 is expected to return to the visible disk. Energetic
Real Time Solar X-ray and Solar Wind
Solar Cycle Progression
Solar Cycle chart updated using the latest ISES predictions.
Real-Time Solar Wind
Real-Time Solar Wind data broadcast from NASA's ACE satellite.
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.
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.
Auroral Activity Extrapolated from NOAA POES
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.
Credits:Space Weather Images and Information (excluded from copyright) courtesy of: NOAA / NWS Space Weather Prediction Center, Mauna Loa Solar Observatory (HAO/NCAR), and SOHO (ESA & NASA).
Space Weather links:
3-Day Forecast of Solar and Geophysical Activity
Space Weather Now
Today's Space Weather
Real-Time Solar Wind
Space Weather Outlooks
Space Weather Bulletins
Space Weather Alerts and Warnings
Space Weather Alerts - Current Month
Solar and Heliospheric Observatory (SOHO)
The Very Latest SOHO Images
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