Space Weather Observations, Alerts, and Forecast
3-day Solar-Geophysical Forecast issued Jun 05 22:00 UTC
Solar Activity Forecast:
Solar activity is expected to remain very low with only a slight chance for an isolated C-class flare.
Geophysical Activity Forecast:
The geomagnetic field is expected to remain mostly quiet with isolated periods of unsettled conditions on day 1 (6 June) due to elevated solar wind speeds and brief periods of Bz south. Quiet to unsettled with intermittent periods of active conditions are expected on days 2 and 3 (7-8 June). The increase in activity is due in part to weak coronal hole effects expected on 7 June as well as the possible arrival of a slow moving CME on 8 June. The CME is from a filament that disappeared on 3 June. A weak halo can be observed on LASCO C3 coronagraph images from early 4 June as well as STEREO A and B coronagraphs from the same period.
Real Time Images of the Sun
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SOHO EIT 304 |
SOHO EIT 284 |
Mauna Loa Solar Image
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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.
Real Time Solar X-ray and Solar Wind
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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.
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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. |
Auroral Activity Extrapolated from NOAA POES
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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.
Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force. Updated 2013 May 22 2200 UTC Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 142 Issued at 2200Z on 22 May 2013 IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity has been at high levels for the past 24 hours. The largest solar event of the period was a M5 event observed at 22/1332Z from Region 1745 (N13W80). There are currently 7 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares and a slight chance for an X-class flare on days one, two, and three (23 May, 24 May, 25 May). IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 500 km/s at 22/0442Z. Total IMF reached 6 nT at 22/2005Z. The maximum southward component of Bz reached -5 nT at 21/2357Z. Protons greater than 10 MeV at geosynchronous orbit reached a peak level of 279 pfu at 22/2035Z. Protons greater than 100 MeV at geosynchronous orbit reached a peak level of 3 pfu at 22/1830Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 722 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to active levels on day one (23 May), quiet to unsettled levels on day two (24 May) and quiet to active levels on day three (25 May). Protons are expected to cross threshold on days one and two (23 May, 24 May) and are likely to cross threshold on day three (25 May). III. Event probabilities 23 May-25 May Class M 50/50/50 Class X 20/20/20 Proton 99/99/70 PCAF RED IV. Penticton 10.7 cm Flux Observed 22 May 133 Predicted 23 May-25 May 125/125/130 90 Day Mean 22 May 122 V. Geomagnetic A Indices Observed Afr/Ap 21 May 008/008 Estimated Afr/Ap 22 May 009/012 Predicted Afr/Ap 23 May-25 May 012/012-007/015-012/008 VI. Geomagnetic Activity Probabilities 23 May-25 May A. Middle Latitudes Active 30/15/30 Minor Storm 10/05/15 Major-severe storm 01/01/05 B. High Latitudes Active 15/15/15 Minor Storm 30/25/25 Major-severe storm 40/25/45
Photo compliments of NOAA
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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:
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