⇦ HF Propagation Data (2026-05-04 11:49 UTC)

updated at: 2026 May 04 0905 UTC
 Space weather for the past 24 hours has been minor.
 Radio blackouts reaching the R1 level occurred.
 No space weather storms are predicted for the next 24 hours.

Real Time Propagation from EA2

MUF, MAXIMUM USABLE FREQUENCY (KC2G)

TROPOSPHERIC FORECAST (F5LEN)
(click on image for last map)

SPACE WEATHER OVERVIEW

LATEST IONOGRAM FROM SPAIN

updated every 5 min

click here

reading ionograms.pdf
Understanding ionogram charts (PDF format)

MAX NVIS FREQUENCY (bom.gov.au)

The above map can be used as a guide to NVIS ionospheric frequency support and to generate real time HF predictions (eg Hourly HAP charts) to assist the HF radio communicator.

KPi 3 DAY FORECAST (spaceweather.gfz-potsdam.de)

D REGION ABSORPTION LAST PREDICTIONS (services.swpc.noaa.gov)

Last hours animation from NOAA

AURORA FORECAST

tonight forecast
30 min aurora forecast

SOLAR WIND PREDICTION
Acknowledgments: NOAA Space Weather Prediction Center, GFZ German Research Center for Geosciences, Australian Space Weather Forecasting Centre, Andrew Rodland KC2G, Observatorio del Ebro, RigReference.