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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 29 March 2015
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 88 Issued at 2200Z on 29 Mar 2015
IA. Analysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C3 event observed at 29/1530Z from Region 2303 (N18W92). There are currently 5 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 (30 Mar, 31 Mar, 01 Apr).
IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: 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 437 km/s at 28/2234Z. Total IMF reached 15 nT at 29/0027Z. The maximum southward component of Bz reached -9 nT at 29/0913Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 467 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to minor storm levels on days one and two (30 Mar, 31 Mar) and quiet to active levels on day three (01 Apr).
III. Event probabilities 30 Mar-01 Apr
Class M 25/25/25
Class X 05/05/05
IV. Penticton 10.7 cm Flux
Observed 29 Mar 145
Predicted 30 Mar-01 Apr 140/140/150
90 Day Mean 29 Mar 132
V. Geomagnetic A Indices
Observed Afr/Ap 28 Mar 009/008
Estimated Afr/Ap 29 Mar 016/018
Predicted Afr/Ap 30 Mar-01 Apr 021/025-019/025-013/015
VI. Geomagnetic Activity Probabilities 30 Mar-01 Apr
A. Middle Latitudes
Minor Storm 30/30/05
Major-severe storm 05/05/01
B. High Latitudes
Minor Storm 20/20/30
Major-severe storm 70/70/35
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.