Propagation & Space Weather Info Collected from Different Sources

:Product: Report of Solar-Geophysical Activity
:Issued: 2018 Mar 21 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 80 Issued at 2200Z on 21 Mar 2018

IA.  Analysis of Solar Active Regions and Activity from 20/2100Z to
21/2100Z: Solar activity has been at very low levels for the past 24
hours. There are currently 0 numbered sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is expected to be very low
on days one, two, and three (22 Mar, 23 Mar, 24 Mar).

IIA.  Geophysical Activity Summary 20/2100Z to 21/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 416 km/s at 21/0223Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 22143 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to minor storm levels on day one (22 Mar) and quiet to
active levels on days two and three (23 Mar, 24 Mar).

III.  Event probabilities 22 Mar-24 Mar
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           21 Mar 069
Predicted   22 Mar-24 Mar 068/068/068
90 Day Mean        21 Mar 071

V.  Geomagnetic A Indices
Observed Afr/Ap 20 Mar  007/006
Estimated Afr/Ap 21 Mar  006/008
Predicted Afr/Ap 22 Mar-24 Mar  014/018-012/016-014/018

VI.  Geomagnetic Activity Probabilities 22 Mar-24 Mar
A.  Middle Latitudes
Active                35/35/35
Minor Storm           25/20/25
Major-severe storm    05/05/05
B.  High Latitudes
Active                10/15/10
Minor Storm           30/30/30
Major-severe storm    55/45/55

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