Space Weather Guide


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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 24 July 2014



Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 205 Issued at 2200Z on 24 Jul 2014


IA. Analysis of Solar Active Regions and Activity from 23/2100Z to
24/2100Z: Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C2 event observed at
24/0151Z from Region 2121 (N07E45). There are currently 4 numbered
sunspot regions on the disk.

IB. Solar Activity Forecast: Solar activity is expected to be very low
with a chance for a C-class flares on days one and two (25 Jul, 26 Jul)
and likely to be low with a slight chance for an M-class flare on day
three (27 Jul).


IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
409 km/s at 24/1152Z. Total IMF reached 6 nT at 23/2312Z. The maximum
southward component of Bz reached -4 nT at 24/1022Z.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (25 Jul, 26 Jul)
and quiet levels on day three (27 Jul).


III. Event probabilities 25 Jul-27 Jul
Class M 01/05/10
Class X 01/01/01
Proton 01/01/01
PCAF green


IV. Penticton 10.7 cm Flux
Observed 24 Jul 104
Predicted 25 Jul-27 Jul 110/115/125
90 Day Mean 24 Jul 129


V. Geomagnetic A Indices
Observed Afr/Ap 23 Jul 007/005
Estimated Afr/Ap 24 Jul 005/005
Predicted Afr/Ap 25 Jul-27 Jul 008/008-007/008-006/005


VI. Geomagnetic Activity Probabilities 25 Jul-27 Jul
A. Middle Latitudes
Active 20/20/10
Minor Storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor Storm 20/20/15
Major-severe storm 15/15/10

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.