Space Weather Observations, Alerts, and Forecast

Real Time Images of the Sun

Click for time-lapse image of the sun
SOHO EIT 284 image of the sun
Mauna Loa Solar Image
Latest Mauna Loa image of the Sun

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.

Daily 24 Hour Solar Activity Summary
Issued: 2015 Jul 07 1230 UTC

Solar activity was at moderate levels. Region 2381 (N14E23, Ekc/beta-gamma) grew early in the period, as it gained penumbral area in the lead spots, however the region showed signs of decay later in the period as the intermediate penumbral spot began to combine with the leader, while the trailer spots lost penumbral coverage. The region also stretched further in longitudinal extent without any evidence of increased magnetic shear. Despite these signs of dissipation, the region retained some weak magnetic mixing and was unstable as it produced numerous C-class flares and the largest flare of the period, an M1/2n at 06/2040 UTC. An active surge region became visible just beyond the SE limb in SDO/AIA 304 imagery and GOES-15/SXI X-ray imagery. This active region appeared to be a contributor to a series of C-class flares that began about 06/1526 UTC through 06/1702 UTC. This same regions activity may have been related to a coronal mass ejection (CME) first noted in SOHO/LASCO C-2 coronagraph imagery at 06/1524 UTC. Analysis of all available imagery indicates this CME was south and east of the Earths orbital plane. All other regions on the disk were either stable or in decay. No Earth-directed CMEs were detected in available coronagraph imagery.

Solar Activity Forecast
Issued: 2015 Jul 07 1230 UTC

Solar activity is expected to be low with a chance for M-class (R1-R2/Minor-Moderate) flares and a slight chance for X-class (R3-Strong) activity over the next three days (07-09 Jul), particularly from instability of Region 2381 and the active surge region rotating onto the SE limb. Energetic

Real Time Solar X-ray and Solar Wind

Solar Cycle Progression
Graph showing current solar cycle progression
Solar Cycle chart updated using the latest ISES predictions.
Real-Time Solar Wind
Graph showing 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
Graph showing Real-Time 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
Graph showing Real-Time 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
Current Northern hemispheric power input map
Southern Hemi Auroral Map
Current Southern hemispheric power input 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.


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
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Real-Time Solar Wind
Space Weather Outlooks
Space Weather Bulletins
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Space Weather Alerts - Current Month
Solar and Heliospheric Observatory (SOHO)
The Very Latest SOHO Images

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