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Space Weather Guide    What is space weather? Most of the time space, weather is of little concern in our everyday lives. However, when the space environment is disturbed by the variable output of particles and radiation from the Sun, technologies that we depend on in our daily life, in space orbit as well as on the ground, can be affected. Some of the most dramatic space weather effects occur in association with eruptions of material from the solar atmosphere into interplanetary space. Thus, our space weather is a consequence of the behavior of the Sun, the nature of Earth's magnetic field and atmosphere, and our location in the solar system. The increasing deployment of radiation -current- and field sensitive technological systems over the last few decades and the increasing presence of complex systems in space combine to make society more vulnerable to solar-terrestrial disturbances. This has been emphasized by the large number of problems associated with the severe magnetic storms between 1989 and 1991 as the 11 year solar activity cycle peaked. SOHO Real-time View of the Sun   Space Weather Outlook Summary For April 28-May 4 No space weather storms were observed. Outlook For May 7-13 No space weather storms are expected. For current space weather conditions see: Space Weather Now, Today's Space Weather and Space Weather Alerts   Joint USAF/NOAA Report of Solar and Geophysical Activity 08 May 2008 Product: Report of Solar-Geophysical Activity Issued: 2008 May 08 2200 UTC Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force. Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 129 Issued at 2200Z on 08 May 2008 IA. Analysis of Solar Active Regions and Activity from 07/2100Z to 08/2100Z: Solar activity was very low. No flares were detected. The visible disk was spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 07/2100Z to 08/2100Z: Geomagnetic field activity was at mostly quiet levels. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during the period. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be at quiet to unsettled levels on day 1 (09 May). Activity is expected to decrease to quiet levels during days 2 - 3 (10 - 11 May). III. Event Probabilities 09 May-11 May Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 08 May 066 Predicted 09 May-11 May 068/068/070 90 Day Mean 08 May 071 V. Geomagnetic A Indices Observed Afr/Ap 07 May 005/004 Estimated Afr/Ap 08 May 005/005 Predicted Afr/Ap 09 May-11 May 005/008-005/005-005/005 VI. Geomagnetic Activity Probabilities 09 May-11 May A. Middle Latitudes Active 10/10/10 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01 NOAA/SEC Satellite Environment GOES X-Ray Flux Dst Geomagnetic Index Estimate Auroral Activity Extrapolated from NOAA POES Low: Dst > -20 nT Medium: -20 nT > Dst > -50 nT High: High: -50 nT > Dst > -100 nT Extreme: Dst < -100 nT SOHO CELIAS/MTOF Proton Monitor ACE Solar Wind Real-Time Data Note: Images and text on this page are provided by NASA/ESA SOHO website. Space Weather Today from NOAA's Space Environment Center.

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