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 25 May 2015

 

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast

SDF Number 145 Issued at 2200Z on 25 May 2015

 

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 5 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, two, and three (26 May, 27 May, 28 May).

 

IIA.  Geophysical Activity Summary 24/2100Z to 25/2100Z: 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 368 km/s at 25/0124Z.

 

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

 

III.  Event probabilities 26 May-28 May

Class M    01/01/01

Class X    01/01/01

Proton     01/01/01

PCAF       green

 

IV.  Penticton 10.7 cm Flux

Observed           25 May 097

Predicted   26 May-28 May 100/100/095

90 Day Mean        25 May 127

 

V.  Geomagnetic A Indices

Observed Afr/Ap 24 May  006/005

Estimated Afr/Ap 25 May  004/005

Predicted Afr/Ap 26 May-28 May  006/005-006/005-007/008

 

VI.  Geomagnetic Activity Probabilities 26 May-28 May

A.  Middle Latitudes

Active                10/10/20

Minor Storm           01/01/05

Major-severe storm    01/01/01

B.  High Latitudes

Active                20/20/15

Minor Storm           20/20/30

Major-severe storm    10/10/25

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.