Propagation & Space Weather Info Collected from Different Sources

:Product: Report of Solar-Geophysical Activity
:Issued: 2024 Jun 17 2200 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 169 Issued at 2200Z on 17 Jun 2024

IA.  Analysis of Solar Active Regions and Activity from 16/2100Z to
17/2100Z: Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
17/0804Z from Region 3712 (S26W12). There are currently 7 numbered
sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(18 Jun, 19 Jun, 20 Jun).

IIA.  Geophysical Activity Summary 16/2100Z to 17/2100Z: The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 543 km/s at 17/0513Z. Total IMF reached 11
nT at 17/1426Z. The maximum southward component of Bz reached -9 nT at
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on day one (18 Jun), quiet to unsettled
levels on day two (19 Jun) and quiet levels on day three (20 Jun).
Protons have a slight chance of crossing threshold on day one (18 Jun)
and have a slight chance of crossing threshold on days two and three (19
Jun, 20 Jun).

III.  Event probabilities 18 Jun-20 Jun
Class M    55/55/55
Class X    10/10/10
Proton     15/10/10
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           17 Jun 180
Predicted   18 Jun-20 Jun 180/180/180
90 Day Mean        17 Jun 176

V.  Geomagnetic A Indices
Observed Afr/Ap 16 Jun  009/013
Estimated Afr/Ap 17 Jun  009/010
Predicted Afr/Ap 18 Jun-20 Jun  014/015-008/008-006/005

VI.  Geomagnetic Activity Probabilities 18 Jun-20 Jun
A.  Middle Latitudes
Active                35/20/10
Minor Storm           20/05/01
Major-severe storm    05/01/01
B.  High Latitudes
Active                10/15/15
Minor Storm           30/25/20
Major-severe storm    50/30/20

Solar Images

More solar/images:


Northern hemisphere
Northern Hemisphere
Southern hemisphere
Southern Hemisphere

Geomagnetic activity nowcast (Finland)

Space Weather Overview
Space Weather Overview

Current magnetic activity level in northern and southern Finland + near real-time/images from aurora cameras:

The Kjell Henriksen Observatory website at contains aurora forecast up to one hour ahead in time.

DX Robot Gouda delivers aurora alerts via e-mail:
Aurora alerts via e-mail for Finnish operators: revontulialertti

  • Planetary K-index (Kp)

    Planetary K-index

  • X-ray Flux

    X-ray flux

  • D-Region Absorption Prediction

    D-Region Absorption Prediction

Kp-index & aurora

Solar Wind & Other Data

Map of the Latest 11m Spots from the CRX Cluster Network

Latest 11m Spots from the CRX Cluster Network

Near-Real-Time MUF Map

Solar and auroral data:

List of 10M Beacons

Propagation Tutorials

General Guidelines for Correlation of Propagation Indices to Actual HF Propagation Conditions

Propagation tutorial by PA9X

N0NBH's propagation tutorial (PDF)

NM7M: The Little Pistol's Guide to HF Propagation (PDF)

Propagation Broadcasts and Forecasts Demystified (PDF)

RSGB Propagation Studies Committee (lots of info on different propagation modes)

Understanding 10 (11) Meter Sporadic-E (understanding ES or “short skip”)

Understanding Solar Indices by Ian Poole, G3YWX