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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 22 April follow. Solar flux 84 and estimated planetary A-index 5. The estimated planetary K-index at 1200 UTC on 23 April was 2. 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 Japan (NICT)
  K index Australia (BOM)
  Solar activity data (Solen.info)
  Space weather (spaceweather.com)
  Space weather (solarham.net)
  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)
  Aurora forecast for Europe (Tony)
  Aurora forecast for North America (Tony)

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

Forecast: A-Index & flux

45-DAY AP FORECAST 23Apr21 010 24Apr21 008 25Apr21 025 26Apr21 012 27Apr21 005 28Apr21 005 29Apr21 005 30Apr21 005 01May21 005 02May21 005 03May21 005 04May21 015 05May21 005 06May21 005 07May21 005 08May21 008 09May21 005 10May21 005 11May21 008 12May21 012 13May21 020 14May21 030 15May21 015 16May21 012 17May21 008 18May21 005 19May21 005 20May21 008 21May21 012 22May21 005 23May21 005 24May21 010 25May21 008 26May21 005 27May21 005 28May21 005 29May21 005 30May21 005 31May21 015 01Jun21 005 02Jun21 005 03Jun21 005 04Jun21 008 05Jun21 005 06Jun21 005 45-DAY F10.7 CM FLUX FORECAST 23Apr21 084 24Apr21 084 25Apr21 082 26Apr21 082 27Apr21 082 28Apr21 080 29Apr21 078 30Apr21 078 01May21 068 02May21 068 03May21 070 04May21 072 05May21 072 06May21 072 07May21 072 08May21 072 09May21 072 10May21 075 11May21 075 12May21 075 13May21 075 14May21 075 15May21 075 16May21 078 17May21 075 18May21 075 19May21 072 20May21 070 21May21 070 22May21 070 23May21 070 24May21 068 25May21 068 26May21 068 27May21 068 28May21 068 29May21 068 30May21 070 31May21 072 01Jun21 072 02Jun21 072 03Jun21 072 04Jun21 072 05Jun21 072 06Jun21 075 FORECASTER: KING / BROWN 99999 NNNN


Source: NOAA Space Weather
Prediction Center

 

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