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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
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 25 March 2015
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 84 Issued at 2200Z on 25 Mar 2015
IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C8 event observed at 25/0446Z from Region 2305 (S08E19). 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 on days one, two, and three (26 Mar, 27 Mar, 28 Mar).
IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: 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 608 km/s at 25/1521Z. Total IMF reached 7 nT at 25/1202Z. The maximum southward component of Bz reached -4 nT at 25/0929Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 4999 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (26 Mar), quiet to active levels on day two (27 Mar) and active to minor storm levels on day three (28 Mar).
III. Event probabilities 26 Mar-28 Mar
Class M 25/25/25
Class X 05/05/05
IV. Penticton 10.7 cm Flux
Observed 25 Mar 138
Predicted 26 Mar-28 Mar 008/015/025
90 Day Mean 25 Mar 132
V. Geomagnetic A Indices
Observed Afr/Ap 24 Mar 009/008
Estimated Afr/Ap 25 Mar 011/014
Predicted Afr/Ap 26 Mar-28 Mar 007/008-011/015-017/025
VI. Geomagnetic Activity Probabilities 26 Mar-28 Mar
A. Middle Latitudes
Minor Storm 01/05/20
Major-severe storm 01/01/01
B. High Latitudes
Minor Storm 25/30/25
Major-severe storm 20/35/55
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
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Space Weather Today from
NOAA's Space Environment Center.