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 29 July 2014



Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 210 Issued at 2200Z on 29 Jul 2014


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 C4 event observed at
29/1633Z from Region 2130 (S07E71). There are currently 10 numbered
sunspot regions on the disk.

IB. Solar Activity Forecast: Solar activity is likely to be low with a
chance for M-class flares on days one, two, and three (30 Jul, 31 Jul,
01 Aug).


IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 439 km/s at
28/2113Z.


IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on days one, two, and three (30 Jul, 31 Jul, 01
Aug).


III. Event probabilities 30 Jul-01 Aug
Class M 25/25/25
Class X 05/05/05
Proton 01/01/01
PCAF green


IV. Penticton 10.7 cm Flux
Observed 29 Jul 142
Predicted 30 Jul-01 Aug 145/145/145
90 Day Mean 29 Jul 129


V. Geomagnetic A Indices
Observed Afr/Ap 28 Jul 012/010
Estimated Afr/Ap 29 Jul 003/004
Predicted Afr/Ap 30 Jul-01 Aug 006/005-006/005-006/005


VI. Geomagnetic Activity Probabilities 30 Jul-01 Aug
A. Middle Latitudes
Active 10/10/10
Minor Storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor Storm 15/15/15
Major-severe storm 15/15/15

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.