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Radio Propagation

Solar-terrestrial indices

Indices from the U.S. NOAA Space Weather Prediction Center in Boulder Colorado, updated every three hours and published here in real time:

Solar-terrestrial indices for 02 September follow. Solar flux 77 and mid-latitude A-index 8. The mid-latitude K-index at 0300 UTC on 03 September was 1 (8 nT). No space weather storms were observed for the past 24 hours. No space weather storms are expected for the next 24 hours.

What does this mean for DXers?

Forecast: A-Index & flux

45-DAY AP FORECAST 03SEP10 005 04SEP10 005 05SEP10 008 06SEP10 008 07SEP10 008 08SEP10 005 09SEP10 005 10SEP10 005 11SEP10 005 12SEP10 005 13SEP10 005 14SEP10 005 15SEP10 005 16SEP10 005 17SEP10 005 18SEP10 005 19SEP10 012 20SEP10 008 21SEP10 005 22SEP10 005 23SEP10 005 24SEP10 005 25SEP10 005 26SEP10 005 27SEP10 005 28SEP10 005 29SEP10 005 30SEP10 005 01OCT10 005 02OCT10 005 03OCT10 005 04OCT10 005 05OCT10 005 06OCT10 005 07OCT10 005 08OCT10 005 09OCT10 005 10OCT10 005 11OCT10 005 12OCT10 005 13OCT10 005 14OCT10 005 15OCT10 005 16OCT10 005 17OCT10 005 45-DAY F10.7 CM FLUX FORECAST 03SEP10 078 04SEP10 078 05SEP10 076 06SEP10 076 07SEP10 076 08SEP10 076 09SEP10 076 10SEP10 076 11SEP10 078 12SEP10 080 13SEP10 080 14SEP10 080 15SEP10 078 16SEP10 078 17SEP10 076 18SEP10 076 19SEP10 075 20SEP10 075 21SEP10 075 22SEP10 074 23SEP10 074 24SEP10 074 25SEP10 074 26SEP10 074 27SEP10 074 28SEP10 076 29SEP10 076 30SEP10 076 01OCT10 077 02OCT10 076 03OCT10 075 04OCT10 075 05OCT10 075 06OCT10 076 07OCT10 076 08OCT10 078 09OCT10 080 10OCT10 080 11OCT10 080 12OCT10 078 13OCT10 078 14OCT10 076 15OCT10 076 16OCT10 075 17OCT10 075


Source: NOAA Space Weather
Prediction Center

Auroral activity

Northern hemisphere
Southern hemisphere
 

Web resources

Current situation:
  Space weather now (SEC)
  Today's space weather (SEC)
  Solarsoft latest events (LMSAL)
  Magnetic disturbance level in Nurmijärvi and Sodankylä in Finland (FMI)

Forecasts:
  Solar forecast (SEC)
  Solar forecast (SIDC)
  Geomagnetic summary and forecast (IPS)

Short-term data:
  Kp-index data (past 3 days, SEC)
  Proton event data (3 days, SEC)
  K and A indices in Australia (past 7 days, IPS)
  Solarsoft latest events (past 3 days, LMSAL)
  Last 25 WWV reports (DXSummit)

Medium-term data:
  Solar Terrestrial activity report (past 60 days, DXLC)
  Daily planetary A-index (past 30 days, IPS Australia)
  DST index (current and past months)

Long-term data (solar cycle history):
  Solar cycle sunspots (SEC)
  Solar cycle sunspots (SIDC)
  Solar cycle sunspots (DXLC)
  Solar cycle solar flux (SEC)
  Solar cycle Ap-Index (SEC)

General information:
  Primer on Space Weather (SEC)
  Geophysical Alert Description (SEC)
  Codes, terminology and classifications (SIDC Belgium)

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