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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 19 August follow. Solar flux 67 and mid-latitude A-index 12. The mid-latitude K-index at 1500 UTC on 20 August 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 20AUG08 010 21AUG08 005 22AUG08 005 23AUG08 005 24AUG08 005 25AUG08 005 26AUG08 005 13AUG08 005 14AUG08 005 15AUG08 005 30AUG08 005 31AUG08 005 01SEP08 005 02SEP08 005 03SEP08 005 04SEP08 005 05SEP08 018 06SEP08 012 07SEP08 008 08SEP08 005 09SEP08 005 10SEP08 005 11SEP08 005 12SEP08 008 13SEP08 008 14SEP08 020 15SEP08 015 16SEP08 010 17SEP08 005 18SEP08 005 19SEP08 005 20SEP08 005 21SEP08 005 22SEP08 005 23SEP08 005 24SEP08 005 25SEP08 005 26SEP08 005 27SEP08 005 28SEP08 005 29SEP08 005 30SEP08 005 01OCT08 005 02OCT08 015 03OCT08 010 45-DAY F10.7 CM FLUX FORECAST 20AUG08 066 21AUG08 066 22AUG08 066 23AUG08 066 24AUG08 066 25AUG08 066 26AUG08 066 27AUG08 066 28AUG08 066 29AUG08 066 30AUG08 066 31AUG08 066 01SEP08 066 02SEP08 066 03SEP08 066 04SEP08 066 05SEP08 066 06SEP08 066 07SEP08 066 08SEP08 066 09SEP08 066 10SEP08 066 11SEP08 066 12SEP08 066 13SEP08 066 14SEP08 066 15SEP08 066 16SEP08 066 17SEP08 066 18SEP08 066 19SEP08 066 20SEP08 066 21SEP08 066 22SEP08 066 23SEP08 066 24SEP08 066 25SEP08 066 26SEP08 066 27SEP08 066 28SEP08 066 29SEP08 066 30SEP08 066 01OCT08 066 02OCT08 066 03OCT08 066


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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