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

Summary For April 8-14 A category R2 (Moderate) radio blackout was observed on 11 April due to flare activity from active sunspot Region 1719. A category R1 (Minor) radio blackout was observed on 12 April due to flare activity from active sunspot Region 1718. A category S1 to S2 (Minor to Moderate) solar radiation storm was observed on 11 - 12 April due to solar activity from active sunspot Region 1719. Outlook For April 15-21 No space weather storms are expected. For current space weather conditions see: Space Weather Now, Today's Space Weather and Space Weather Alerts

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 22 April 2014



Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 112 Issued at 2200Z on 22 Apr 2014


IA. Analysis of Solar Active Regions and Activity from 21/2100Z to
22/2100Z: Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C8 event observed at
22/1137Z from Region 2035 (S13W71). There are currently 7 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 (23 Apr, 24 Apr,
25 Apr).


IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: 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 554 km/s at
21/2307Z. Total IMF reached 6 nT at 22/0250Z. The maximum southward
component of Bz reached -1 nT at 22/1408Z.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (23 Apr,
24 Apr, 25 Apr).


III. Event probabilities 23 Apr-25 Apr
Class M 50/40/30
Class X 05/01/01
Proton 05/01/01
PCAF green


IV. Penticton 10.7 cm Flux
Observed 22 Apr 145
Predicted 23 Apr-25 Apr 145/145/140
90 Day Mean 22 Apr 156


V. Geomagnetic A Indices
Observed Afr/Ap 21 Apr 018/022
Estimated Afr/Ap 22 Apr 007/008
Predicted Afr/Ap 23 Apr-25 Apr 007/008-007/008-008/008


VI. Geomagnetic Activity Probabilities 23 Apr-25 Apr
A. Middle Latitudes
Active 20/20/20
Minor Storm 05/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 20/20/20
Minor Storm 30/30/30
Major-severe storm 30/30/30

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.