Space Weather Guide


For updates and breaking Space Weather news follow Space Weather on Twitter.

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 August 2016

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 238 Issued at 2200Z on 25 Aug 2016

IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 3 numbered sunspot regions on the disk.

IB. Solar Activity Forecast: Solar activity is expected to be very low with a slight chance for a C-class flare on days one, two, and three (26 Aug, 27 Aug, 28 Aug).

IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 611 km/s at 25/0737Z. Total IMF reached 6 nT at 25/2037Z. The maximum southward component of Bz reached -4 nT at 25/0655Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1295 pfu.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and three (26 Aug, 28 Aug) and quiet levels on day two (27 Aug).

III. Event probabilities 26 Aug-28 Aug
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green

IV. Penticton 10.7 cm Flux
Observed 25 Aug 079
Predicted 26 Aug-28 Aug 078/078/078
90 Day Mean 25 Aug 084

V. Geomagnetic A Indices
Observed Afr/Ap 24 Aug 017/019
Estimated Afr/Ap 25 Aug 009/010
Predicted Afr/Ap 26 Aug-28 Aug 008/008-006/005-008/008

VI. Geomagnetic Activity Probabilities 26 Aug-28 Aug
A. Middle Latitudes
Active 10/10/15
Minor Storm 05/01/05
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor Storm 20/15/20
Major-severe storm 15/10/25

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.