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 at low levels due to an impulsive C3 flare observed at 02/0842 UTC from Region 2540 (N22E24, Bxo/beta). Associated with this event was a Type II radio emission with an estimated shock velocity of 1,800 km/s. Beginning at 02/0912 UTC, SOHO/LASCO C2 imagery observed a narrow, slow-moving CME off the NE limb. Analysis of this CME is ongoing. Since the C3 flare, Region 2540 decreased in area to mostly a plage region. Region 2539 (N16E07, Eai/beta) exhibited umbral area dissipation within its intermediate spots and an overall decay in the regions area. Region 2536 (N16W26, Dao/beta) displayed intermediate spot decay. New Region 2541 (N04E64, Bxo/beta) rotated onto the disk. The remainder of the disk and limb was quiet and stable. No Earth-directed CMEs were detected in available coronagraph imagery; pending analysis and model results of the 02/0912 UTC CME.
Solar Activity Forecast
Issued: 2016 May 03 0030 UTC
Solar activity is expected to be at very low levels with a chance for C-class flares on day one (03 May) increasing to likely on days two and three (04-05 May) due to the return of old active Region 2529 (N10, L=344 on 03 May. 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).
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Real-Time Solar Wind
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Solar and Heliospheric Observatory (SOHO)
The Very Latest SOHO Images
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