Radio Propagation :: DXing.info

Welcome!

It is Friday, September 13, 2024, 0049 UTC

Home > Radio Propagation

Radio stations

Profiles

Audio

Archive: News

DXing

Introduction

DX Glossary

Articles

Propagation

Equipment

Archive: Logs

DXpeditions

Australia

Canada

Finland: Aihkiniemi

Finland: Mika reports

South Africa

USA

others

Site info

About

Help - FAQ

FB group

Press

What's new

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 12 September follow. Solar flux 201 and estimated planetary A-index 67. The estimated planetary K-index at 0000 UTC on 13 September was 4.67. Space weather for the past 24 hours has been strong. Geomagnetic storms reaching the G3 level occurred. Radio blackouts reaching the R3 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 R2 level are likely.

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 13Sep24 035 14Sep24 025 15Sep24 015 16Sep24 015 17Sep24 012 18Sep24 015 19Sep24 012 20Sep24 012 21Sep24 005 22Sep24 005 23Sep24 005 24Sep24 005 25Sep24 005 26Sep24 025 27Sep24 025 28Sep24 015 29Sep24 010 30Sep24 005 01Oct24 005 02Oct24 005 03Oct24 005 04Oct24 005 05Oct24 010 06Oct24 010 07Oct24 030 08Oct24 022 09Oct24 008 10Oct24 005 11Oct24 005 12Oct24 005 13Oct24 005 14Oct24 008 15Oct24 008 16Oct24 005 17Oct24 005 18Oct24 005 19Oct24 005 20Oct24 005 21Oct24 005 22Oct24 005 23Oct24 025 24Oct24 025 25Oct24 015 26Oct24 010 27Oct24 005 45-DAY F10.7 CM FLUX FORECAST 13Sep24 210 14Sep24 210 15Sep24 205 16Sep24 205 17Sep24 205 18Sep24 205 19Sep24 205 20Sep24 205 21Sep24 225 22Sep24 220 23Sep24 225 24Sep24 225 25Sep24 230 26Sep24 235 27Sep24 230 28Sep24 225 29Sep24 240 30Sep24 240 01Oct24 245 02Oct24 240 03Oct24 230 04Oct24 220 05Oct24 220 06Oct24 225 07Oct24 225 08Oct24 220 09Oct24 220 10Oct24 225 11Oct24 225 12Oct24 220 13Oct24 215 14Oct24 210 15Oct24 210 16Oct24 215 17Oct24 225 18Oct24 225 19Oct24 220 20Oct24 225 21Oct24 225 22Oct24 230 23Oct24 235 24Oct24 230 25Oct24 225 26Oct24 240 27Oct24 240 FORECASTER: BROEMMELSIEK / KISER 99999 NNNN

Source: NOAA Space Weather
Prediction Center