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It is Thursday, April 3, 2025, 0308 UTC

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Radio Propagation

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 02 April follow. Solar flux 180 and estimated planetary A-index 22. The estimated planetary K-index at 0300 UTC on 03 April was 3.67. Space weather for the past 24 hours has been minor. Solar radiation storms reaching the S1 level occurred. Radio blackouts reaching the R1 level occurred. Space weather for the next 24 hours is predicted to be minor. Geomagnetic storms reaching the G1 level are likely. Radio blackouts reaching the R1 level are expected.

What does this mean for AM DXers?

Here's the short story: High solar flux (solar flux is expected to bottom out at around 70 in the upcoming couple of years, and then begin rising to 150-200 when the next solar maximum is reached around mid-2020's), high A-index (over 10) geomagnetic storms, proton events and polar-cap absorption are bad news; they tend to mean poor long-distance reception of mediumwave and tropical band shortwave stations, especially paths over polar areas and paths to east and west of your location are affected. If you live far north, reception may be good towards south and vice versa on the Southern hemisphere.
Space weather phenomena explained (SWPC)
Geophysical alert information (LWCA)

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)

45-DAY AP FORECAST 01Apr25 010 02Apr25 008 03Apr25 005 04Apr25 012 05Apr25 020 06Apr25 010 07Apr25 010 08Apr25 030 09Apr25 035 10Apr25 025 11Apr25 018 12Apr25 010 13Apr25 015 14Apr25 012 15Apr25 008 16Apr25 005 17Apr25 010 18Apr25 012 19Apr25 008 20Apr25 010 21Apr25 015 22Apr25 015 23Apr25 015 24Apr25 015 25Apr25 010 26Apr25 008 27Apr25 005 28Apr25 005 29Apr25 005 30Apr25 010 01May25 020 02May25 035 03May25 010 04May25 012 05May25 030 06May25 035 07May25 025 08May25 018 09May25 010 10May25 015 11May25 012 12May25 008 13May25 005 14May25 010 15May25 012 45-DAY F10.7 CM FLUX FORECAST 01Apr25 175 02Apr25 175 03Apr25 170 04Apr25 170 05Apr25 165 06Apr25 165 07Apr25 160 08Apr25 180 09Apr25 180 10Apr25 175 11Apr25 175 12Apr25 175 13Apr25 175 14Apr25 170 15Apr25 170 16Apr25 175 17Apr25 175 18Apr25 175 19Apr25 170 20Apr25 170 21Apr25 165 22Apr25 165 23Apr25 170 24Apr25 170 25Apr25 165 26Apr25 165 27Apr25 170 28Apr25 175 29Apr25 175 30Apr25 175 01May25 180 02May25 180 03May25 180 04May25 185 05May25 185 06May25 180 07May25 175 08May25 175 09May25 175 10May25 175 11May25 170 12May25 170 13May25 175 14May25 175 15May25 175 FORECASTER: HOUSSEAL / REED 99999 NNNN

Source: NOAA Space Weather
Prediction Center