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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 25 July follow. Solar flux 70 and estimated planetary A-index 9. The estimated planetary K-index at 0600 UTC on 26 July 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 DXers?

Forecast: A-Index & flux

45-DAY AP FORECAST 25Jul17 008 26Jul17 005 27Jul17 005 28Jul17 005 29Jul17 005 30Jul17 005 31Jul17 005 01Aug17 005 02Aug17 005 03Aug17 005 04Aug17 005 05Aug17 025 06Aug17 010 07Aug17 008 08Aug17 005 09Aug17 005 10Aug17 005 11Aug17 005 12Aug17 005 13Aug17 005 14Aug17 005 15Aug17 005 16Aug17 005 17Aug17 015 18Aug17 015 19Aug17 012 20Aug17 008 21Aug17 005 22Aug17 005 23Aug17 005 24Aug17 005 25Aug17 005 26Aug17 005 27Aug17 005 28Aug17 005 29Aug17 005 30Aug17 005 31Aug17 005 01Sep17 025 02Sep17 010 03Sep17 008 04Sep17 005 05Sep17 005 06Sep17 005 07Sep17 005 45-DAY F10.7 CM FLUX FORECAST 25Jul17 070 26Jul17 070 27Jul17 070 28Jul17 071 29Jul17 071 30Jul17 071 31Jul17 072 01Aug17 082 02Aug17 082 03Aug17 082 04Aug17 082 05Aug17 082 06Aug17 082 07Aug17 082 08Aug17 082 09Aug17 082 10Aug17 082 11Aug17 082 12Aug17 080 13Aug17 075 14Aug17 070 15Aug17 070 16Aug17 070 17Aug17 070 18Aug17 070 19Aug17 070 20Aug17 070 21Aug17 070 22Aug17 070 23Aug17 070 24Aug17 070 25Aug17 070 26Aug17 080 27Aug17 082 28Aug17 082 29Aug17 082 30Aug17 082 31Aug17 082 01Sep17 082 02Sep17 082 03Sep17 082 04Sep17 082 05Sep17 082 06Sep17 082 07Sep17 082 FORECASTER: Cody / Aguilera 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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