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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 16 December follow. Solar flux 117 and estimated planetary A-index 12. The estimated planetary K-index at 0300 UTC on 17 December was 2.67. No space weather storms were observed for the past 24 hours. No space weather storms are predicted for the next 24 hours.

What does this mean for AM DXers?

Web resources

Current situation:
  Space weather (SWPC)
  Space weather dashboard (SWPC)
  DST Index
(Kyoto) (see also DST FAQ by AER)
  DCX index (Oulu University)
  K index
(SWPC)
  K index Norway (Tromsø)
  K index Germany (GFZ)
  K index Australia (BOM)
  Solar activity data (Solen.info)
  Space weather (spaceweather.com)
  Space weather (solarham.net)
  Auroras and Space weather Finland (FMI)
  Space weather Canada (NRCan)
  GOES proton flux (SWPC)

Forecasts:
  3-day forecast (SWPC)
  27-day forecast (SWPC)
  45-day forecast (USAF)
  Space weather forecast (Japan)

Long-term data (solar cycle history):
  Solar cycle progression (SWPC)
  Solar cycle sunspots (SIDC)

Forecast: A-Index & flux

45-DAY AP FORECAST 17Dec25 010 18Dec25 015 19Dec25 012 20Dec25 010 21Dec25 005 22Dec25 020 23Dec25 020 24Dec25 025 25Dec25 020 26Dec25 020 27Dec25 015 28Dec25 010 29Dec25 008 30Dec25 030 31Dec25 025 01Jan26 010 02Jan26 010 03Jan26 008 04Jan26 005 05Jan26 005 06Jan26 005 07Jan26 005 08Jan26 005 09Jan26 015 10Jan26 010 11Jan26 010 12Jan26 008 13Jan26 010 14Jan26 015 15Jan26 012 16Jan26 010 17Jan26 005 18Jan26 020 19Jan26 020 20Jan26 025 21Jan26 020 22Jan26 020 23Jan26 015 24Jan26 010 25Jan26 008 26Jan26 030 27Jan26 025 28Jan26 010 29Jan26 010 30Jan26 008 45-DAY F10.7 CM FLUX FORECAST 17Dec25 120 18Dec25 120 19Dec25 115 20Dec25 115 21Dec25 115 22Dec25 125 23Dec25 135 24Dec25 145 25Dec25 155 26Dec25 165 27Dec25 175 28Dec25 180 29Dec25 175 30Dec25 180 31Dec25 180 01Jan26 175 02Jan26 170 03Jan26 170 04Jan26 170 05Jan26 170 06Jan26 170 07Jan26 150 08Jan26 140 09Jan26 135 10Jan26 125 11Jan26 120 12Jan26 120 13Jan26 120 14Jan26 120 15Jan26 115 16Jan26 115 17Jan26 115 18Jan26 125 19Jan26 135 20Jan26 145 21Jan26 155 22Jan26 165 23Jan26 175 24Jan26 180 25Jan26 175 26Jan26 180 27Jan26 180 28Jan26 175 29Jan26 170 30Jan26 170 FORECASTER: AUTOMATED - SET4D SYSTEM 99999


Source: NOAA Space Weather
Prediction Center

 

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