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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 21 September follow. Solar flux 73 and estimated planetary A-index 7. The estimated planetary K-index at 1800 UTC on 22 September was 1. 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 DXers?

Forecast: A-Index & flux

45-DAY AP FORECAST 22Sep17 005 23Sep17 008 24Sep17 012 25Sep17 016 26Sep17 008 27Sep17 025 28Sep17 035 29Sep17 020 30Sep17 018 01Oct17 015 02Oct17 012 03Oct17 008 04Oct17 005 05Oct17 005 06Oct17 005 07Oct17 005 08Oct17 005 09Oct17 005 10Oct17 005 11Oct17 025 12Oct17 025 13Oct17 025 14Oct17 020 15Oct17 015 16Oct17 012 17Oct17 010 18Oct17 005 19Oct17 005 20Oct17 008 21Oct17 018 22Oct17 012 23Oct17 008 24Oct17 020 25Oct17 020 26Oct17 020 27Oct17 018 28Oct17 015 29Oct17 012 30Oct17 008 31Oct17 005 01Nov17 005 02Nov17 005 03Nov17 005 04Nov17 005 05Nov17 005 45-DAY F10.7 CM FLUX FORECAST 22Sep17 070 23Sep17 085 24Sep17 090 25Sep17 090 26Sep17 090 27Sep17 090 28Sep17 090 29Sep17 105 30Sep17 115 01Oct17 115 02Oct17 115 03Oct17 115 04Oct17 115 05Oct17 115 06Oct17 115 07Oct17 110 08Oct17 085 09Oct17 076 10Oct17 075 11Oct17 074 12Oct17 073 13Oct17 072 14Oct17 072 15Oct17 075 16Oct17 075 17Oct17 075 18Oct17 075 19Oct17 075 20Oct17 095 21Oct17 110 22Oct17 110 23Oct17 110 24Oct17 110 25Oct17 110 26Oct17 115 27Oct17 115 28Oct17 115 29Oct17 115 30Oct17 115 31Oct17 115 01Nov17 115 02Nov17 115 03Nov17 110 04Nov17 085 05Nov17 076 FORECASTER: Malinky / Mireles 99999


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)
  DST Index and AL Index
(LASP Colorado)
  DST Index
(Kyoto)

Forecasts:
  Solar forecast (SWPC)
  Solar forecast (SIDC)
  Geomagnetic summary and forecast (IPS)

Short and medium term data:
  Daily solar data (past 30 days, SWPC)
  Daily geomagnetic data (past 30 days, SWPC)
  Proton flux (3 days, SWPC)
  K and A indices in Australia (past 7 days, IPS)
  Solar Terrestrial activity report (past 60 days, DXLC)

Long-term data (solar cycle history):
  Solar cycle progression (SWPC)
  Solar cycle sunspots (SEC)
  Solar cycle sunspots (SIDC)
  Solar cycle solar flux (SEC)
  Solar cycle Ap-Index (SEC)

General information:
  Primer on Space Weather (SEC)
  Geophysical Alert Description (LWCA)

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