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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 May follow. Solar flux 117 and estimated planetary A-index 13. The estimated planetary K-index at 0900 UTC on 17 May was 3.33. Space weather for the past 24 hours has been moderate. Geomagnetic storms reaching the G2 level occurred. Space weather for the next 24 hours is predicted to be moderate. Geomagnetic storms reaching the G2 level are expected. Radio blackouts reaching the R1 level are likely.

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 13May25 012 14May25 010 15May25 005 16May25 005 17May25 005 18May25 008 19May25 010 20May25 008 21May25 008 22May25 006 23May25 006 24May25 006 25May25 005 26May25 005 27May25 008 28May25 025 29May25 030 30May25 020 31May25 020 01Jun25 020 02Jun25 012 03Jun25 008 04Jun25 010 05Jun25 012 06Jun25 010 07Jun25 010 08Jun25 008 09Jun25 012 10Jun25 010 11Jun25 005 12Jun25 005 13Jun25 005 14Jun25 008 15Jun25 010 16Jun25 008 17Jun25 008 18Jun25 006 19Jun25 006 20Jun25 006 21Jun25 005 22Jun25 005 23Jun25 008 24Jun25 025 25Jun25 030 26Jun25 020 45-DAY F10.7 CM FLUX FORECAST 13May25 120 14May25 120 15May25 115 16May25 115 17May25 115 18May25 115 19May25 120 20May25 125 21May25 125 22May25 125 23May25 130 24May25 130 25May25 130 26May25 135 27May25 140 28May25 140 29May25 140 30May25 140 31May25 140 01Jun25 145 02Jun25 145 03Jun25 145 04Jun25 145 05Jun25 140 06Jun25 130 07Jun25 125 08Jun25 125 09Jun25 120 10Jun25 120 11Jun25 115 12Jun25 115 13Jun25 115 14Jun25 115 15Jun25 120 16Jun25 125 17Jun25 125 18Jun25 125 19Jun25 130 20Jun25 130 21Jun25 130 22Jun25 135 23Jun25 140 24Jun25 140 25Jun25 140 26Jun25 140 FORECASTER: AUTOMATED - SET4D SYSTEM 99999


Source: NOAA Space Weather
Prediction Center

 

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