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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 15 March follow. Solar flux 86 and mid-latitude A-index 2. The mid-latitude K-index at 0600 UTC on 16 March was 1 (6 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 16MAR10 007 17MAR10 007 18MAR10 007 19MAR10 007 20MAR10 005 21MAR10 005 22MAR10 005 23MAR10 005 24MAR10 005 25MAR10 005 26MAR10 005 27MAR10 005 28MAR10 006 29MAR10 006 30MAR10 005 31MAR10 005 01APR10 005 02APR10 005 03APR10 005 04APR10 005 05APR10 005 06APR10 005 07APR10 005 08APR10 005 09APR10 005 10APR10 005 11APR10 005 12APR10 005 13APR10 005 14APR10 005 15APR10 005 16APR10 005 17APR10 005 18APR10 005 19APR10 005 20APR10 005 21APR10 005 22APR10 005 23APR10 005 24APR10 005 25APR10 005 26APR10 005 27APR10 005 28APR10 005 29APR10 005 45-DAY F10.7 CM FLUX FORECAST 16MAR10 086 17MAR10 086 18MAR10 087 19MAR10 087 20MAR10 087 21MAR10 087 22MAR10 087 23MAR10 075 24MAR10 075 25MAR10 075 26MAR10 075 27MAR10 075 28MAR10 075 29MAR10 075 30MAR10 075 31MAR10 075 01APR10 075 02APR10 075 03APR10 075 04APR10 075 05APR10 075 06APR10 078 07APR10 078 08APR10 078 09APR10 078 10APR10 078 11APR10 078 12APR10 078 13APR10 078 14APR10 078 15APR10 078 16APR10 078 17APR10 078 18APR10 078 19APR10 075 20APR10 075 21APR10 075 22APR10 075 23APR10 075 24APR10 075 25APR10 075 26APR10 075 27APR10 075 28APR10 075 29APR10 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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